4.10. Show, Clear, and Debug Command Reference

4.10.1. Command Hierarchies

Show Commands
Clear Commands
Debug Commands
Tools Commands

4.10.1.1. Show Commands

show

— router

— isis [isis-instance]

— adjacency [ip-address | ip-int-name | nbr-system-id] [detail] [mt mt-id-number]

— capabilities [system-id | lsp-id] [level level]

— database [system-id | lsp-id] [detail] [level level]

— flex-algo [flex-algo-id] [level level] [detail]

— hostname

— interface [ip-int-name | ip-address] [detail]

— interface [detail] mt mt-id-number

— lfa-coverage

— link-group-member-status name [level level]

— link-group-status name [level level]

— mapping-server [prefix ip-address[/mask]] [index index] [level level] [flags {s}]

— routes [ipv4-unicast | ipv6-unicast | ipv4-multicast | ipv6-multicast | mt mt-id-number] [ip-prefix[/prefix-length]] [alternative] [exclude-shortcut] [flex-algo {flex-algo-id | all}] [detail]

— sid-stats adj [interface-name]

— sid-stats adj-set [id]

— sid-stats node [ip-prefix[/prefix-length]] [algo algo-id]

— sid-stats summary

— spf-log [detail]

— sr-adj-sets [adjacency-set-id] [detail]

— sr-lfa-coverage [flex-algo {flex-algo-id | all}]

— statistics

— status

— summary-address [ip-address [/prefix-length]]

— topology [ipv4-unicast | ipv6-unicast | ipv4-multicast | ipv6-multicast | mt mt-id-number] [lfa] [detail] [flex-algo {flex-algo-id | all}]

4.10.1.2. Clear Commands

clear

— router

— isis [isis-instance]

— adjacency [system-id]

— database [system-id]

— export

— overload {rtm | fib | prefix-limit}

— spf-log

— sid-egress-stats adj [interface-name]

— sid-egress-stats adj-set [id]

— sid-egress-stats all

— sid-egress-stats node [ip-prefix[/prefix-length]]

— sid-ingress-stats adj [interface-name]

— sid-ingress-stats adj-set [id]

— sid-ingress-stats all

— sid-ingress-stats node [ip-prefix[/prefix-length]]

— statistics

4.10.1.3. Debug Commands

debug

— router

— isis [isis-instance]

— [no] adjacency [ip-int-name | ip-address | nbr-system-id]

— [no] cspf

— [no] graceful-restart

— interface [ip-int-name | ip-address]

— no interface

— leak [ip-address]

— no leak

— [no] lsdb [level-number] [system-id | lsp-id]

— [no] misc

— packet [packet-type] [ip-int-name | ip-address] [detail]

— rtm [ip-address]

— no rtm

— [no] spf [level-number] [system-id]

— summary [ip-address]

— no summary

— tunnel-endpoint [tunnel-spf] [tunnel-leak ip-address]

— no tunnel-endpoint

4.10.1.4. Tools Commands

tools

— dump

— router

— isis

— sr-adjacencies [ip-int-name | ip-address] [detail]

— sr-database [sid sid] [prefix ip-address] [nh-type {sr | bgp | rsvp}] [ipv4-unicast | ipv6-unicast] [algo algo-id] [detail]

4.10.2. Command Descriptions

4.10.2.1. Show Commands

The command outputs in the following section are examples only; actual displays may differ depending on supported functionality and user configuration.

isis

Syntax

isis [isis-instance]

Context

show>router

Description

This command displays information for a specified IS-IS instance.

Parameters

isis-instance—

Specifies the instance ID for an IS-IS instance.

Values—

1 to 31

Default—

adjacency

Syntax

adjacency [ip-address | ip-int-name | nbr-system-id] [detail]

Context

show>router>isis

Description

This command displays information regarding IS-IS neighbors. When no ip-address, ip-int-name, or nbr-system-id is specified, then all adjacencies are displayed.

Parameters

ip-address—

When specified, only adjacencies with that interface is displayed.

Values—

ipv4-address:

a.b.c.d (host bits must be 0)

ipv6-address:

x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D

ip-int-name—

When specified, only adjacencies with that interface is displayed.

nbr-system-id—

When specified, only the adjacency with that ID is displayed.

detail—

All output is displayed in the detailed format.

mt-id-number—

Specifies the multi topology ID number for this route.

Output

Standard and Detailed IS-IS Adjacency Output

Table 43 describes the standard and detailed command output fields for an IS-IS adjacency.

Table 43: Standard and Detailed Adjacency Output Fields

Label	Description
Interface	Interface name associated with the neighbor.
System-id	Neighbor’s system ID.
Level	1-L1 only, 2-L2 only, 3-L1 and L2.
State	Up, down, new, one-way, initializing, or rejected.
Hold	Hold time remaining for the adjacency.
SNPA	Subnetwork point of attachment, MAC address of the next hop.
Circuit type	Level on the interface L1, L2, or both.
Expires In	Number of seconds until adjacency expires.
Priority	Priority to become designated router.
Up/down transitions	Number of times neighbor state has changed.
Event	Event causing last transition.
Last transition	Time since last transition change.
Speaks	Supported protocols (only IP).
IP address	IP address of neighbor.
MT enab	Yes — The neighbor is advertising at least 1 non MTID#0.
Topology	Derived from the MT TLV in the IIH MT#0, MT#2 => “Topology : Unicast, IPv6-Unicast” Native IPv4 or native IPv6 => “Topology : Unicast” Not supported MTIDs => Topology line suppressed

Sample Output

*A:Dut-C# show router isis adjacency

===============================================================================

Rtr Base ISIS Instance 0 Adjacency

===============================================================================

System ID Usage State Hold Interface MT-ID

-------------------------------------------------------------------------------

Dut-B L1L2 Up 23 to_Dut-B 0

Dut-D L1L2 Up 23 to_Dut-D1 0

-------------------------------------------------------------------------------

Adjacencies : 2

===============================================================================

*A:Dut-C# show router isis adjacency Dut-D detail

===============================================================================

Rtr Base ISIS Instance 0 Adjacency (detail)

===============================================================================

SystemID : Dut-D SNPA : 00:00:00:00:00:04

Interface : to_Dut-D1 Up Time : 0d 00:05:23

State : Up Priority : 0

Nbr Sys Typ : L1L2 L. Circ Typ : L1L2

Hold Time : 19 Max Hold : 27

Adj Level : L1L2 MT Enabled : No

Topology : Unicast

IPv6 Neighbor : fe80::200:ff:fe00:4

IPv4 Neighbor : 1.3.4.4

IPv4 Adj SID : Label 262139

Restart Support : Disabled

Restart Status : Not currently being helped

Restart Suppressed : Disabled

Number of Restarts: 0

Last Restart at : Never

===============================================================================

*A:Dut-C#

*A:ALA-A# show router isis adjacency 180.0.7.12

===============================================================================

Rtr Base ISIS Instance 0 Adjacency

===============================================================================

System ID Usage State Hold Interface

-------------------------------------------------------------------------------

asbr_east L2 Up 25 if2/5

-------------------------------------------------------------------------------

Adjacencies : 1

===============================================================================

*A:ALA-A#

*A:ALA-A# show router isis adjacency if2/5

===============================================================================

Rtr Base ISIS Instance 0 Adjacency

===============================================================================

System ID Usage State Hold Interface

-------------------------------------------------------------------------------

asbr_east L2 Up 20 if2/5

-------------------------------------------------------------------------------

Adjacencies : 1

===============================================================================

*A:ALA-A#

*A:Dut-A# show router isis adjacency detail

===============================================================================

Rtr Base ISIS Instance 0 Adjacency (detail)

===============================================================================

SystemID : Dut-B SNPA : 20:81:01:01:00:01

Interface : ip-3FFE::A0A:101 Up Time : 0d 00:56:10

State : Up Priority : 64

Nbr Sys Typ : L1 L. Circ Typ : L1

Hold Time : 2 Max Hold : 2

Adj Level : L1 MT Enabled : Yes

Topology : Unicast, IPv6-Unicast

IPv6 Neighbor : FE80::2281:1FF:FE01:1

IPv4 Neighbor : 10.10.1.2

Restart Support : Disabled

Restart Status : Not currently being helped

Restart Supressed : Disabled

Number of Restarts: 0

Last Restart at : Never

SystemID : Dut-B SNPA : 20:81:01:01:00:01

Interface : ip-3FFE::A0A:101 Up Time : 0d 00:56:10

State : Up Priority : 64

Nbr Sys Typ : L2 L. Circ Typ : L2

Hold Time : 2 Max Hold : 2

Adj Level : L2 MT Enabled : Yes

Topology : Unicast, IPv6-Unicast

IPv6 Neighbor : FE80::2281:1FF:FE01:1

IPv4 Neighbor : 10.10.1.2

Restart Support : Disabled

Restart Status : Not currently being helped

Restart Supressed : Disabled

Number of Restarts: 0

Last Restart at : Never

SystemID : Dut-F SNPA : 00:00:00:00:00:00

Interface : ies-1-3FFE::A0A:1501 Up Time : 0d 01:18:34

State : Up Priority : 0

Nbr Sys Typ : L1L2 L. Circ Typ : L1L2

Hold Time : 5 Max Hold : 6

Adj Level : L1L2 MT Enabled : Yes

Topology : Unicast, IPv6-Unicast

IPv6 Neighbor : FE80::2285:FFFF:FE00:0

IPv4 Neighbor : 10.10.21.6

Restart Support : Disabled

Restart Status : Not currently being helped

Restart Supressed : Disabled

Number of Restarts: 0

Last Restart at : Never

===============================================================================

*A:Dut-A#

capabilities

Syntax

capabilities [system-id | lsp-id] [level level]

Context

show>router>isis

Description

This command displays the IS-IS capability information.

Parameters

system-id—

Only the LSPs related to the specified system-id are listed.

lsp-id—

Only the specified LSP is listed.

level—

Specifies the interface level (1, 2, or 1 and 2).

Output

The following output is an example of IS-IS capability information, and Table 44 describes the output fields.

Sample Output

*A:Dut-B# show router isis 0 capabilities

===============================================================================

Rtr Base ISIS Instance 0 Capabilities

===============================================================================

Displaying Level 1 capabilities

-------------------------------------------------------------------------------

LSP ID : Dut-B.00-00

Router Cap : 10.20.1.2, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

FAD Sub-Tlv:

Flex-Algorithm : 128

Metric-Type : delay

Calculation-Type : 0

Priority : 100

Flags: M

LSP ID : Dut-D.00-00

Router Cap : 10.20.1.4, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

FAD Sub-Tlv:

Flex-Algorithm : 128

Metric-Type : delay

Calculation-Type : 0

Priority : 50

Flags: M

Level (1) Capability Count : 2

Displaying Level 2 capabilities

LSP ID : Dut-A.00-00

Router Cap : 10.20.1.1, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

LSP ID : Dut-B.00-00

Router Cap : 10.20.1.2, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

FAD Sub-Tlv:

Flex-Algorithm : 128

Metric-Type : delay

Calculation-Type : 0

Priority : 100

Flags: M

LSP ID : Dut-C.00-00

Router Cap : 10.20.1.3, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

Level (2) Capability Count : 3

===============================================================================

*A:Dut-B#

Table 44: IS-IS Capability Information Output Fields

Label	Description
Flex-Algorithm	The flexible algorithm number
Priority	Displays the FAD priority; It is the tiebreaker when multiple FADs are received
Metric Type	The metric used by the winning FAD igp — the IGP metric is used te-metric — the TE metric is used delay — the delay metric is used
Calculation Type	Displays the calculation type; for SPF a zero value is only defined
Flags	Displays the FAD Flags; the M-flag is used for inter-area; when set, the metric must be used for inter-area traffic to avoid loops and blackhole traffic on ABR/ASBR

database

Syntax

database [system-id | lsp-id] [detail] [level level]

Context

show>router>isis

Description

This command displays the entries in the IS-IS link state database.

Parameters

system-id—

Only the LSPs related to the specified system-id are listed. If no system-id or lsp-id are specified, all database entries are listed.

lsp-id—

Only the specified LSP (hostname) is listed. If no system-id or lsp-id are specified, all database entries are listed.

level—

Specifies the interface level (1, 2, or 1 and 2).

detail—

All output is displayed in the detailed format.

Output

The following output is an example of the IS-IS link state database information, and Table 45 describes the output fields.

Sample Output

*A:Dut-B# show router isis 0 database

===============================================================================

Rtr Base ISIS Instance 0 Database

===============================================================================

LSP ID Sequence Checksum Lifetime Attributes

-------------------------------------------------------------------------------

Displaying Level 1 database

-------------------------------------------------------------------------------

Dut-B.00-00 0x495 0x614e 711 L1L2

Dut-D.00-00 0x13b 0x1917 831 L1

Level (1) LSP Count : 2

Displaying Level 2 database

-------------------------------------------------------------------------------

Dut-A.00-00 0x4a6 0x214f 804 L1L2

Dut-B.00-00 0x4b7 0xe654 898 L1L2

Dut-C.00-00 0x4b2 0xa4f1 1166 L1L2

Level (2) LSP Count : 3

===============================================================================

*A:Dut-B#

*A:Dut-B# show router isis 0 database detail

===============================================================================

Rtr Base ISIS Instance 0 Database (detail)

===============================================================================

Displaying Level 1 database

-------------------------------------------------------------------------------

LSP ID : Dut-B.00-00 Level : L1

Sequence : 0x495 Checksum : 0x614e Lifetime : 706

Version : 1 Pkt Type : 18 Pkt Ver : 1

Attributes: L1L2 Max Area : 3 Alloc Len : 1492

SYS ID : 4900.0000.0002 SysID Len : 6 Used Len : 179

TLVs :

Area Addresses:

Area Address : (3) 49.0001

Supp Protocols:

Protocols : IPv4

IS-Hostname : Dut-B

Router ID :

Router ID : 10.20.1.2

Router Cap : 10.20.1.2, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

FAD Sub-Tlv:

Flex-Algorithm : 128

Metric-Type : delay

Calculation-Type : 0

Priority : 100

Flags: M

I/F Addresses :

I/F Address : 10.20.1.2

I/F Address : 10.10.10.13

TE IS Nbrs :

Nbr : Dut-D.00

Default Metric : 10

Sub TLV Len : 30

IF Addr : 10.10.10.13

Nbr IP : 10.10.10.14

TE APP LINK ATTR :

SABML-flag:Non-Legacy SABM-flags: X

Delay : 100

Adj-SID: Flags:v4VL Weight:0 Label:524285

TE IP Reach :

Default Metric : 0

Control Info: S, prefLen 32

Prefix : 10.20.1.2

Sub TLV :

Prefix-SID Index:2, Algo:0, Flags:NnP

Prefix-SID Index:12, Algo:128, Flags:NnP

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.12

-------------------------------------------------------------------------------

LSP ID : Dut-D.00-00 Level : L1

Sequence : 0x13b Checksum : 0x1917 Lifetime : 827

Version : 1 Pkt Type : 18 Pkt Ver : 1

Attributes: L1 Max Area : 3 Alloc Len : 179

SYS ID : 4900.0000.0004 SysID Len : 6 Used Len : 179

TLVs :

Area Addresses:

Area Address : (3) 49.0001

Supp Protocols:

Protocols : IPv4

IS-Hostname : Dut-D

Router ID :

Router ID : 10.20.1.4

Router Cap : 10.20.1.4, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

FAD Sub-Tlv:

Flex-Algorithm : 128

Metric-Type : delay

Calculation-Type : 0

Priority : 50

Flags: M

I/F Addresses :

I/F Address : 10.20.1.4

I/F Address : 10.10.10.14

TE IS Nbrs :

Nbr : Dut-B.00

Default Metric : 10

Sub TLV Len : 30

IF Addr : 10.10.10.14

Nbr IP : 10.10.10.13

TE APP LINK ATTR :

SABML-flag:Non-Legacy SABM-flags: X

Delay : 100

Adj-SID: Flags:v4VL Weight:0 Label:524287

TE IP Reach :

Default Metric : 0

Control Info: S, prefLen 32

Prefix : 10.20.1.4

Sub TLV :

Prefix-SID Index:4, Algo:0, Flags:NnP

Prefix-SID Index:14, Algo:128, Flags:NnP

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.12

Level (1) LSP Count : 2

Displaying Level 2 database

-------------------------------------------------------------------------------

LSP ID : Dut-A.00-00 Level : L2

Sequence : 0x4a6 Checksum : 0x214f Lifetime : 798

Version : 1 Pkt Type : 20 Pkt Ver : 1

Attributes: L1L2 Max Area : 3 Alloc Len : 220

SYS ID : 4900.0000.0001 SysID Len : 6 Used Len : 220

TLVs :

Area Addresses:

Area Address : (3) 49.0001

Supp Protocols:

Protocols : IPv4

IS-Hostname : Dut-A

Router ID :

Router ID : 10.20.1.1

Router Cap : 10.20.1.1, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

I/F Addresses :

I/F Address : 10.20.1.1

I/F Address : 10.10.10.1

I/F Address : 10.10.10.5

TE IS Nbrs :

Nbr : Dut-C.00

Default Metric : 10

Sub TLV Len : 30

IF Addr : 10.10.10.5

Nbr IP : 10.10.10.6

TE APP LINK ATTR :

SABML-flag:Non-Legacy SABM-flags: X

Delay : 100

Adj-SID: Flags:v4VL Weight:0 Label:524286

TE IS Nbrs :

Nbr : Dut-B.00

Default Metric : 10

Sub TLV Len : 24

IF Addr : 10.10.10.1

Nbr IP : 10.10.10.2

TE APP LINK ATTR :

SABML-flag:Non-Legacy SABM-flags: X

Adj-SID: Flags:v4VL Weight:0 Label:524285

TE IP Reach :

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.0

Default Metric : 0

Control Info: S, prefLen 32

Prefix : 10.20.1.1

Sub TLV :

Prefix-SID Index:1, Algo:0, Flags:NnP

Prefix-SID Index:11, Algo:128, Flags:NnP

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.4

-------------------------------------------------------------------------------

LSP ID : Dut-B.00-00 Level : L2

Sequence : 0x4b7 Checksum : 0xe654 Lifetime : 891

Version : 1 Pkt Type : 20 Pkt Ver : 1

Attributes: L1L2 Max Area : 3 Alloc Len : 1492

SYS ID : 4900.0000.0002 SysID Len : 6 Used Len : 271

TLVs :

Area Addresses:

Area Address : (3) 49.0001

Supp Protocols:

Protocols : IPv4

IS-Hostname : Dut-B

Router ID :

Router ID : 10.20.1.2

Router Cap : 10.20.1.2, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

FAD Sub-Tlv:

Flex-Algorithm : 128

Metric-Type : delay

Calculation-Type : 0

Priority : 100

Flags: M

I/F Addresses :

I/F Address : 10.20.1.2

I/F Address : 10.10.10.2

I/F Address : 10.10.10.9

TE IS Nbrs :

Nbr : Dut-C.00

Default Metric : 10

Sub TLV Len : 30

IF Addr : 10.10.10.9

Nbr IP : 10.10.10.10

TE APP LINK ATTR :

SABML-flag:Non-Legacy SABM-flags: X

Delay : 100

Adj-SID: Flags:v4VL Weight:0 Label:524286

TE IS Nbrs :

Nbr : Dut-A.00

Default Metric : 10

Sub TLV Len : 24

IF Addr : 10.10.10.2

Nbr IP : 10.10.10.1

TE APP LINK ATTR :

SABML-flag:Non-Legacy SABM-flags: X

Adj-SID: Flags:v4VL Weight:0 Label:524284

TE IP Reach :

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.0

Default Metric : 0

Control Info: S, prefLen 32

Prefix : 10.20.1.2

Sub TLV :

Prefix-SID Index:2, Algo:0, Flags:NnP

Prefix-SID Index:12, Algo:128, Flags:NnP

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.8

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.12

Default Metric : 10

Control Info: S, prefLen 32

Prefix : 10.20.1.4

Sub TLV :

Prefix-SID Index:4, Algo:0, Flags:RNnP

Prefix-SID Index:14, Algo:128, Flags:RNnP

Prefix-Metric-FlexAlg Algo:128, Metric:100

-------------------------------------------------------------------------------

LSP ID : Dut-C.00-00 Level : L2

Sequence : 0x4b2 Checksum : 0xa4f1 Lifetime : 1158

Version : 1 Pkt Type : 20 Pkt Ver : 1

Attributes: L1L2 Max Area : 3 Alloc Len : 226

SYS ID : 4900.0000.0003 SysID Len : 6 Used Len : 226

TLVs :

Area Addresses:

Area Address : (3) 49.0001

Supp Protocols:

Protocols : IPv4

IS-Hostname : Dut-C

Router ID :

Router ID : 10.20.1.3

Router Cap : 10.20.1.3, D:0, S:0

TE Node Cap : B E M P

SR Cap: IPv4 MPLS-IPv6

SRGB Base:20000, Range:10001

SR Alg: metric based SPF, 128

Node MSD Cap: BMI : 12 ERLD : 15

I/F Addresses :

I/F Address : 10.20.1.3

I/F Address : 10.10.10.6

I/F Address : 10.10.10.10

TE IS Nbrs :

Nbr : Dut-A.00

Default Metric : 10

Sub TLV Len : 30

IF Addr : 10.10.10.6

Nbr IP : 10.10.10.5

TE APP LINK ATTR :

SABML-flag:Non-Legacy SABM-flags: X

Delay : 100

Adj-SID: Flags:v4VL Weight:0 Label:524287

TE IS Nbrs :

Nbr : Dut-B.00

Default Metric : 10

Sub TLV Len : 30

IF Addr : 10.10.10.10

Nbr IP : 10.10.10.9

TE APP LINK ATTR :

SABML-flag:Non-Legacy SABM-flags: X

Delay : 100

Adj-SID: Flags:v4VL Weight:0 Label:524286

TE IP Reach :

Default Metric : 0

Control Info: S, prefLen 32

Prefix : 10.20.1.3

Sub TLV :

Prefix-SID Index:3, Algo:0, Flags:NnP

Prefix-SID Index:13, Algo:128, Flags:NnP

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.4

Default Metric : 10

Control Info: , prefLen 30

Prefix : 10.10.10.8

Level (2) LSP Count : 3

-------------------------------------------------------------------------------

Control Info : D = Prefix Leaked Down

S = Sub-TLVs Present

Attribute Flags : N = Node Flag

R = Re-advertisement Flag

X = External Prefix Flag

E = Entropy Label Capability (ELC) Flag

Adj-SID Flags : v4/v6 = IPv4 or IPv6 Address-Family

B = Backup Flag

V = Adj-SID carries a value

L = value/index has local significance

S = Set of Adjacencies

P = Persistently allocated

Prefix-SID Flags : R = Re-advertisement Flag

N = Node-SID Flag

nP = no penultimate hop POP

E = Explicit-Null Flag

V = Prefix-SID carries a value

L = value/index has local significance

Lbl-Binding Flags: v4/v6 = IPv4 or IPv6 Address-Family

M = Mirror Context Flag

S = SID/Label Binding flooding

D = Prefix Leaked Down

A = Attached Flag

SABM-flags Flags: R = RSVP-TE

S = SR-TE

F = LFA

X = FLEX-ALGO

FAD-flags Flags: M = Prefix Metric

===============================================================================

*A:Dut-B#

Table 45: IS-IS Link State Database Output Fields

Label	Description
Flex-Algorithm	The flexible algorithm number
Priority	Displays the FAD priority; It is the tiebreaker when multiple FADs are received
Metric Type	The metric used by the winning FAD igp — the IGP metric is used te-metric — the TE metric is used delay — the delay metric is used
Calculation Type	Displays the calculation type; for SPF a zero value is only defined
Prefix SID Flags	Displays the prefix SID flags
Fad Flags	Displays the FAD Flags; the M-flag is used for inter-area; when set, the metric must be used for inter-area traffic to avoid loops and blackhole traffic on ABR/ASBR

flex-algo

Syntax

database [flex-algo-id] [level level] [detail]

Context

show>router>isis

Description

This command displays the IS-IS flexible algorithm information.

This command displays the flexible algorithms, the winning FAD for which the router is enabled and whether the local router is advertising a FAD.

When the keyword detail is used, all other FADs (beyond the winning FAD) advertised by any other router in the area are also displayed.

The displayed output can be filtered by using the flex-algo-id or level keywords.

Parameters

flex-algo-id—

Specifies the keyword filter to display output for the requested algorithm only.

level—

Displays the IS-IS area level information constrained to IS-IS level-1 or level-2 only.

level—

Specifies the IS-IS area level, it filters the displayed information constrained to IS-IS level-1 or level-2 only.

detail—

Displays not only the winning FAD information, but also all other FADs that the router has advertised in IS-IS.

Output

The following output is an example of flexible algorithm information, and Table 46 describes the output fields.

Sample Output

*A:Dut-B# show router isis 0 flex-algo 128

===============================================================================

Rtr Base ISIS Instance 0 Flex-Algos

===============================================================================

-------------------------------------------------------------------------------

Flex-Algo : 128

-------------------------------------------------------------------------------

Advertising FAD : My128

Participating : Yes

Loop-Free-Alternate : Disabled

L1 Oper state : UP

L2 Oper state : UP

Displaying Level 1 FAD Info

-------------------------------------------------------------------------------

FADs-count : 2

Selected FAD

Fad-Owner : 4900.0000.0002

Supported : Yes

Priority : 100

Metric Type : delay

Calculation Type : spf(0)

Exclude : 0x0

Include Any : 0x0

Include All : 0x0

Fad Flags : M

Level : L1

Displaying Level 2 FAD Info

-------------------------------------------------------------------------------

FADs-count : 1

Selected FAD

Fad-Owner : 4900.0000.0002

Supported : Yes

Priority : 100

Metric Type : delay

Calculation Type : spf(0)

Exclude : 0x0

Include Any : 0x0

Include All : 0x0

Fad Flags : M

Level : L2

-------------------------------------------------------------------------------

FAD: Flexible Algorithm Definition

Fad Flags: M = Prefix Metric

===============================================================================

*A:Dut-B#

*A:Dut-B#show router isis 0 flex-algo detail

===============================================================================

Rtr Base ISIS Instance 0 Flex-Algos (detail)

===============================================================================

-------------------------------------------------------------------------------

Flex-Algo : 128

-------------------------------------------------------------------------------

Advertising FAD : My128

Participating : Yes

Loop-Free-Alternate : Disabled

L1 Oper state : UP

L2 Oper state : UP

Displaying Level 1 FAD Info

-------------------------------------------------------------------------------

FADs-count : 2

Selected FAD

Fad-Owner : 4900.0000.0002

Supported : Yes

Priority : 100

Metric Type : delay

Calculation Type : spf(0)

Exclude : 0x0

Include Any : 0x0

Include All : 0x0

Fad Flags : M

Level : L1

Other FADs

Fad-Owner : 4900.0000.0004

Supported : Yes

Priority : 50

Metric Type : delay

Calculation Type : spf(0)

Exclude : 0x0

Include Any : 0x0

Include All : 0x0

Fad Flags : M

Level : L1

Displaying Level 2 FAD Info

-------------------------------------------------------------------------------

FADs-count : 1

Selected FAD

Fad-Owner : 4900.0000.0002

Supported : Yes

Priority : 100

Metric Type : delay

Calculation Type : spf(0)

Exclude : 0x0

Include Any : 0x0

Include All : 0x0

Fad Flags : M

Level : L2

Other FADs

-------------------------------------------------------------------------------

FAD: Flexible Algorithm Definition

Fad Flags: M = Prefix Metric

===============================================================================

*A:Dut-B>show>router>isis#

Table 46: Flexible Algorithm Output Fields

Label	Description
Flex-Algo	The flexible algorithm number
Advertising FAD	The FAD name when the local router is advertising a FAD
Participating	The flexible algorithm participation is enabled
Loop-Free-Alternate	Displays Loop-Free-Alternates; if enabled, then the configuration is slaved from base SPF
L1 Oper State	Displays the L1 operational flexible algorithm state
L2 Oper State	Displays the L2 operational flexible algorithm state
FADs-Count	Displays the number of FADs in the area available to the router
FAD-Owner	Displays the winning FAD owner
Supported	Displays local router support for the flexible algorithm definition that is advertised in the FAD
Priority	Displays the FAD priority; It is the tiebreaker when multiple FADs are received
Metric Type	The metric used by the winning FAD igp — the IGP metric is used te-metric — the TE metric is used delay — the delay metric is used
Calculation Type	Displays the calculation type; for SPF a zero value is only defined
Exclude	The list of administrative groups for links to be excluded from the flexible algorithm topology graph
Include Any	The list of administrative groups for links to be included in the flexible algorithm topology graph
Include All	The list of administrative groups for links where all administrative groups have to match to be included in the flexible algorithm topology graph
Fad Flags	Displays the FAD Flags; the M-flag is used for inter-area; when set, the metric must be used for inter-area traffic to avoid loops and blackhole traffic on ABR/ASBR
Level	The IS-IS area level where the FAD is received

hostname

Syntax

hostname

Context

show>router>isis

Description

This command displays the hostname database. There are no options or parameters.

Output

IS-IS Hostname Output

Table 47 describes output fields for IS-IS hostname output.

Table 47: IS-IS Hostname Output Fields

Label	Description
System-id	System identifier mapped to hostname.
Hostname	Hostname for the specific system-id.
Type	The type of entry (static or dynamic).

Sample Output

A:ALA-A# show router isis hostname

=========================================================================

Rtr Base ISIS Instance 0 Hostnames

=========================================================================

System Id Hostname

-------------------------------------------------------------------------

1800.0000.0002 core_west

1800.0000.0005 core_east

1800.0000.0008 asbr_west

1800.0000.0009 asbr_east

1800.0000.0010 abr_sjc

1800.0000.0011 abr_lax

1800.0000.0012 abr_nyc

1800.0000.0013 abr_dfw

1800.0000.0015 dist_oak

1800.0000.0018 dist_nj

1800.0000.0020 acc_nj

1800.0000.0021 acc_ri

1800.0000.0027 dist_arl

1800.0000.0028 dist_msq

1800.0000.0029 acc_arl

1800.0000.0030 acc_msq

=========================================================================

A:ALA-A#

interface

Syntax

interface [ip-int-name | ip-address] [detail]

Context

show>router>isis

Description

This command displays IS-IS interface information. When no ip-addr or the ip-int-name is specified, all interfaces are listed.

Parameters

ip-address—

Only displays the interface information associated with the specified IP address.

Values—

ipv4-address

a.b.c.d (host bits must be 0)

ipv6-address

x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D

ip-int-name—

Only displays the interface information associated with the specified IP interface name.

detail—

All output is displayed in the detailed format.

Output

The following output is an example of IS-IS Interface information, and Table 48 describes the output fields.

Sample Output

A:Dut-A# show router isis 0 interface detail

===============================================================================

Rtr Base ISIS Instance 0 Interfaces (detail)

===============================================================================

-------------------------------------------------------------------------------

Interface : Loopback0 Level Capability: L1L2

Oper State : Up Admin State : Up

Auth Keychain : Disabled

Auth Type : None Auth State : Enabled

Circuit Id : 2 Retransmit Int. : 5

Type : Pt-to-Pt LSP Pacing Int. : 100

Oper Type : Pt-to-Pt CSNP Int. : 10

Mesh Group : Inactive BER : none

LFA NH Template : None Bfd Enabled : No

Topology : IPv4-Unicast, IPv6-Unicast, IPv4-Multicast, IPv6-Multicast

Te Metric : 0 Te State : Down

Admin Groups : None

Ldp Sync : outOfService Ldp Sync Wait : Disabled

Ldp Timer State : Disabled Ldp Tm Left : 0

Route Tag : None LFA : Included

Default Instance: N/A Load Bal Weight : None

Hello Padding : Disabled

IPv4 Node SID : Index 1 IPv6 Node SID : none

Flex Algo : 128

IPv4 Node SID : Index 11 IPv6 Node SID : None

Level : 1 Adjacencies : 0

Auth Keychain : Disabled

Auth Type : None Metric : 0

Hello Timer : 9 IPv6-Ucast-Met : 0

Priority : 64 IPv6-Mcast-Met : 0

Passive : Yes IPv4-Mcast-Met : 0

SD-Offset : 0 SF-Offset : 0

Hello Mult. : 3 LSP Tx Q Count : 0

Hello Padding : Disabled

Level : 2 Adjacencies : 0

Auth Keychain : Disabled

Auth Type : None Metric : 0

Hello Timer : 9 IPv6-Ucast-Met : 0

Priority : 64 IPv6-Mcast-Met : 0

Passive : Yes IPv4-Mcast-Met : 0

SD-Offset : 0 SF-Offset : 0

Hello Mult. : 3 LSP Tx Q Count : 0

Hello Padding : Disabled

-------------------------------------------------------------------------------

Interface : To_B Level Capability: L2

Oper State : Up Admin State : Up

Auth Keychain : Disabled

Auth Type : None Auth State : Enabled

Circuit Id : 3 Retransmit Int. : 5

Type : Pt-to-Pt LSP Pacing Int. : 100

Oper Type : Pt-to-Pt CSNP Int. : 10

Mesh Group : Inactive BER : none

LFA NH Template : None Bfd Enabled : No

Topology : IPv4-Unicast, IPv6-Unicast, IPv4-Multicast, IPv6-Multicast

Te Metric : 0 Te State : Down

Admin Groups : None

Ldp Sync : outOfService Ldp Sync Wait : Disabled

Ldp Timer State : Disabled Ldp Tm Left : 0

Route Tag : None LFA : Included

Default Instance: N/A Load Bal Weight : None

Hello Padding : Disabled

Level : 2 Adjacencies : 1

Auth Keychain : Disabled

Auth Type : None Metric : 10

Hello Timer : 9 IPv6-Ucast-Met : 10

Priority : 64 IPv6-Mcast-Met : 10

Passive : No IPv4-Mcast-Met : 10

SD-Offset : 0 SF-Offset : 0

Hello Mult. : 3 LSP Tx Q Count : 0

Hello Padding : Disabled

-------------------------------------------------------------------------------

Interface : To_C Level Capability: L2

Oper State : Up Admin State : Up

Auth Keychain : Disabled

Auth Type : None Auth State : Enabled

Circuit Id : 4 Retransmit Int. : 5

Type : Pt-to-Pt LSP Pacing Int. : 100

Oper Type : Pt-to-Pt CSNP Int. : 10

Mesh Group : Inactive BER : none

LFA NH Template : None Bfd Enabled : No

Topology : IPv4-Unicast, IPv6-Unicast, IPv4-Multicast, IPv6-Multicast

Te Metric : 0 Te State : Down

Admin Groups : None

Ldp Sync : outOfService Ldp Sync Wait : Disabled

Ldp Timer State : Disabled Ldp Tm Left : 0

Route Tag : None LFA : Included

Default Instance: N/A Load Bal Weight : None

Hello Padding : Disabled

Level : 2 Adjacencies : 1

Auth Keychain : Disabled

Auth Type : None Metric : 10

Hello Timer : 9 IPv6-Ucast-Met : 10

Priority : 64 IPv6-Mcast-Met : 10

Passive : No IPv4-Mcast-Met : 10

SD-Offset : 0 SF-Offset : 0

Hello Mult. : 3 LSP Tx Q Count : 0

Hello Padding : Disabled

===============================================================================

A:Dut-A#

Table 48: IS-IS Interface Output Fields

Label	Description
Interface	The interface name.
Level Capability	Specifies the interface level (1, 2, or 1 and 2).
Circuit Id	Specifies the circuit identifier.
Oper State	Up — The interface is operationally up. Down — The interface is operationally down.
Metric	Interface metric for Level 1 and Level 2, if none are set to 0.

lfa-coverage

Syntax

lfa-coverage

Context

show>router>isis

Description

This command displays IS-IS LFA coverage information. This information corresponds to the backup next hops for prefixes and nodes written in RTM by the base LFA feature.

Output

The following output is an example of LFA coverage information.

Sample Output

*A:SR# show router isis lfa-coverage

============================================================================

Rtr Base ISIS Instance 0 LFA Coverage

============================================================================

Topology Level Node IPv4

----------------------------------------------------------------------------

IPV4 Unicast L1 4/4(100%) 826/826(100%)

IPV4 Unicast L2 2/2(100%) 826/826(100%)

IPV6 Unicast L1 3/3(100%) 0/0(0%)

IPV6 Unicast L2 0/0(0%) 0/0(0%)

============================================================================

*A:SR#

*A:SRR>config>router>isis# show router isis lfa-coverage

===============================================================================

LFA Coverage

===============================================================================

Topology Level Node IPv4 IPv6

-------------------------------------------------------------------------------

IPV4 Unicast L1 3/4(75%) 1484/1975(75%) 0/0(0%)

IPV4 Unicast L2 3/3(100%) 1484/1975(75%) 0/0(0%)

===============================================================================

*A:SRR>config>router>isis#

link-group-member-status

Syntax

link-group-member-status name [level level]

Context

show>router>isis

Description

This command displays IS-IS link-group-member status.

Parameters

name—

Up to 32 characters.

level—

Specifies the interface level (1, 2, or 1 and 2).

Output

The following output is an example of link group member status information.

Sample Output

A:cses-V94# show router isis link-group-member-status

- link-group-member-status <name> [level <level>]

<name> : [32 chars max]

<level> : 1|2

A:cses-V94# show router isis link-group-member-status "toDutB"

===============================================================================

Rtr Base ISIS Instance 0 Link-Group Member

===============================================================================

Link-group I/F name Level State

-------------------------------------------------------------------------------

toDutB ip-10.10.12.3 L1 Up

toDutB ip-10.10.3.3 L1 Up

toDutB ip-10.10.12.3 L2 Up

toDutB ip-10.10.3.3 L2 Up

-------------------------------------------------------------------------------

Legend: BER = bitErrorRate

===============================================================================

A:cses-V94#

link-group-status

Syntax

link-group-status name [level level]

Context

show>router>isis

Description

This command displays IS-IS link-group status.

Parameters

name—

Specifies the link-group name.

level—

Specifies the interface level (1, 2, or 1 and 2).

Output

The following output is an example of link group status.

Sample Output

A:cses-V94# show router isis link-group-status

===============================================================================

Rtr Base ISIS Instance 0 Link-Group Status

===============================================================================

Link-group Mbrs Oper Revert Active Level State

Mbr Mbr Mbr

-------------------------------------------------------------------------------

toDutB 2 2 2 2 L1 normal

toDutB 2 2 2 2 L2 normal

toDutE 2 2 2 2 L1 normal

toDutE 2 2 2 2 L2 normal

===============================================================================

A:cses-V94#

mapping-server

Syntax

mapping-server [prefix ip-address[/mask]] [index index] [level level] [flag {s}]

Context

show>router>isis

Description

This command displays IS-IS mapping-server information.

Parameters

ip-address[/mask]—

Specifies the IP address and mask of a prefix that has received a node-sid in a SID/Label binding TLV.

Values—

ip-address: a.b.c.d. (host bits must be 0)

mask: 0 to 32

index—

Specifies the node-sid index value for the generated SID/Label binding TLV.

Values—

0 to 4294967295

Default—

none

level—

Specifies a match on the mapping server’s own flooding scope for the generated SID/Label binding TLV.

Values—

1, 2, 1/2

flag—

Specifies a match on the flooding scope of the generated SID/Label binding TLV.

Values—

s — Specifies to match on the S flag value of 1. A SID/Label Binding TLV with the S flag set is flooded across the entire IS-IS routing domain, except across another IS-IS instance. If the S flag is not set (value of zero), the SID/Label Binding TLV is not leaked between levels.

Output

The following output is an example of mapping service information.

Sample Output

*A:Dut-C# show router isis mapping-server

===============================================================================

Rtr Base ISIS Instance 0 Mapping Server

===============================================================================

Index Prefix Range Flags Level

-------------------------------------------------------------------------------

1000 10.20.1.4/32 1 - L1L2

1001 10.20.1.5/32 1 - L1L2

1002 10.20.1.6/32 1 - L1L2

-------------------------------------------------------------------------------

No. of Mapping Server Sid-Maps : 3

===============================================================================

prefix-sids

Syntax

Context

show>router>isis

Description

This command displays IS-IS prefix SIDs.

Parameters

ipv4-unicast—

Displays IPv4 unicast parameters.

ipv6-unicast—

Displays IPv6 unicast parameters.

ipv4-multicast—

Displays IPv4 multicast parameters.

ipv6-multicast—

Displays IPv6 multicast parameters.

mt-id-number—

Displays multi-topology parameters.

Values—

0, 2, 3, 4

ip-prefix[/prefix-length]—

Displays information about the specified IP prefix and length.

Values—

ipv4-prefix:

a.b.c.d (host bits must be 0)

ipv4-prefix-length: [0 to 32]

ipv6-prefix-length:

x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D
ipv6-prefix-length: [0 to 128]

sid—

Displays information for the specific segment identifier.

Values—

0 to 524287

system-id | hostname—

Displays information for the specific IS-IS advertising router. Host name up to 38 characters.

srms—

Displays parameters filtered for segment routing mapping server.

no-srms—

Displays parameters filtered for no segment routing mapping server.

algo-id—

Displays information for the specified algorithm.

Values—

0 to 255

Output

The following output is an example of prefix SID information, and Table 49 describes the output fields.

Sample Output

*A:Dut-B#

*A:Dut-B# show router isis 0 prefix-sids

===============================================================================

Rtr Base ISIS Instance 0 Prefix/SID Table

===============================================================================

Prefix SID Lvl/Typ SRMS AdvRtr

Algo MT Flags

-------------------------------------------------------------------------------

10.20.1.1/32 1 2/Int. N Dut-A

0 0 NnP

10.20.1.1/32 11 2/Int. N Dut-A

128 0 NnP

10.20.1.2/32 2 1/Int. N Dut-B

0 0 NnP

10.20.1.2/32 12 1/Int. N Dut-B

128 0 NnP

10.20.1.2/32 2 2/Int. N Dut-B

0 0 NnP

10.20.1.2/32 12 2/Int. N Dut-B

128 0 NnP

10.20.1.3/32 3 2/Int. N Dut-C

0 0 NnP

10.20.1.3/32 13 2/Int. N Dut-C

128 0 NnP

10.20.1.4/32 4 2/Int. N Dut-B

0 0 RNnP

10.20.1.4/32 14 2/Int. N Dut-B

128 0 RNnP

10.20.1.4/32 4 1/Int. N Dut-D

0 0 NnP

10.20.1.4/32 14 1/Int. N Dut-D

128 0 NnP

-------------------------------------------------------------------------------

No. of Prefix/SIDs: 12 (4 unique)

-------------------------------------------------------------------------------

SRMS : Y/N = prefix SID advertised by SR Mapping Server (Y) or not (N)

S = SRMS prefix SID is selected to be programmed

Flags: R = Re-advertisement

N = Node-SID

nP = no penultimate hop POP

E = Explicit-Null

V = Prefix-SID carries a value

L = value/index has local significance

===============================================================================

*A:Dut-B# show router isis 0 prefix-sids algo 128

===============================================================================

Rtr Base ISIS Instance 0 Prefix/SID Table

===============================================================================

Prefix SID Lvl/Typ SRMS AdvRtr

Algo MT Flags

-------------------------------------------------------------------------------

10.20.1.1/32 11 2/Int. N Dut-A

128 0 NnP

10.20.1.2/32 12 1/Int. N Dut-B

128 0 NnP

10.20.1.2/32 12 2/Int. N Dut-B

128 0 NnP

10.20.1.3/32 13 2/Int. N Dut-C

128 0 NnP

10.20.1.4/32 14 2/Int. N Dut-B

128 0 RNnP

10.20.1.4/32 14 1/Int. N Dut-D

128 0 NnP

-------------------------------------------------------------------------------

No. of Prefix/SIDs: 6 (4 unique)

-------------------------------------------------------------------------------

SRMS : Y/N = prefix SID advertised by SR Mapping Server (Y) or not (N)

S = SRMS prefix SID is selected to be programmed

Flags: R = Re-advertisement

N = Node-SID

nP = no penultimate hop POP

E = Explicit-Null

V = Prefix-SID carries a value

L = value/index has local significance

===============================================================================

Table 49: IS-IS Prefix SIDs Output Fields

Label	Description
Prefix	Displays the IP prefix for the SID
SID	Displays the SID value.
Adv-Rtr	Displays the IP address of the advertised router.
SRMS	Displays whether the prefix SID is advertised by the SR mapping server (Y or N) or selected to be programmed (S).
Flags	Displays the SID flags.
No. of Prefix/SIDs	Displays the number of Prefix/SIDs.

routes

Syntax

routes [ipv4-unicast | ipv6-unicast | ipv4-multicast | ipv6-multicast | mt mt-id-number] [ip-prefix[/prefix-length]] [alternative] [exclude-shortcut] [flex-algo {flex-algo-id | all}] [detail]

Context

show>router>isis

Description

This command displays the routes in the IS-IS route table.

Parameters

ipv4-unicast—

Displays IPv4 unicast parameters.

ipv6-unicast—

Displays IPv6 unicast parameters.

mt mt-id-number—

Displays multi-topology parameters.

Values—

0, 2

alternative—

Displays LFA details.

exclude-shortcut—

Displays the routes without shortcuts.

detail—

Displays detailed information.

flex-algo flex-algo-id—

Displays the flexible algorithm aware forwarding path.

Values—

128 to 255, all

flex-algo all—

Displays all the flexible algorithms-aware forwarding paths.

Output

The following output is an example of IS-IS route information, and Table 50 describes the output fields.

Sample Output

*A:Dut-C# show router isis routes

===============================================================================

Rtr Base ISIS Instance 0 Route Table

===============================================================================

Prefix[Flags] Metric Lvl/Typ Ver. SysID/Hostname

NextHop MT AdminTag/SID[F]

-------------------------------------------------------------------------------

1.1.2.0/24 20 1/Int. 0 Dut-A

1.1.3.1 0 0

1.1.2.0/24 20 1/Int. 0 Dut-B

1.2.3.2 0 0

1.1.3.0/24 10 1/Int. 0 Dut-C

0.0.0.0 0 0

1.2.3.0/24 10 1/Int. 0 Dut-C

0.0.0.0 0 0

1.2.4.0/24 20 1/Int. 0 Dut-B

1.2.3.2 0 0

1.3.5.0/24 10 1/Int. 0 Dut-C

0.0.0.0 0 0

1.4.5.0/24 20 1/Int. 0 Dut-E

1.3.5.5 0 0

1.4.6.0/24 30 1/Int. 0 Dut-B

1.2.3.2 0 0

1.4.6.0/24 30 1/Int. 0 Dut-E

1.3.5.5 0 0

10.20.1.1/32 10 1/Int. 0 Dut-A

1.1.3.1 0 0

10.20.1.2/32 10 1/Int. 0 Dut-B

1.2.3.2 0 0

10.20.1.3/32 0 1/Int. 0 Dut-C

0.0.0.0 0 0

10.20.1.4/32 20 1/Int. 0 Dut-B

1.2.3.2 0 0

10.20.1.4/32 20 1/Int. 0 Dut-E

1.3.5.5 0 0

10.20.1.5/32 10 1/Int. 0 Dut-E

1.3.5.5 0 0

10.20.1.6/32 30 1/Int. 0 Dut-B

1.2.3.2 0 0

10.20.1.6/32 30 1/Int. 0 Dut-E

1.3.5.5 0 0

-------------------------------------------------------------------------------

No. of Routes: 17 (17 paths)

-------------------------------------------------------------------------------

Flags : L = LFA nexthop available

SID[F] : R = Re-advertisement

N = Node-SID

nP = no penultimate hop POP

E = Explicit-Null

V = Prefix-SID carries a value

L = value/index has local significance

===============================================================================

*A:Dut-C#

*A:Dut-C# show router isis routes ipv4-unicast

===============================================================================

Rtr Base ISIS Instance 0 Route Table

===============================================================================

Prefix[Flags] Metric Lvl/Typ Ver. SysID/Hostname

NextHop MT AdminTag/SID[F]

-------------------------------------------------------------------------------

1.2.3.0/24 10 1/Int. 8 Dut-C

0.0.0.0 0 0

1.2.4.0/24 20 1/Int. 8 Dut-D

1.3.4.4 0 0

1.2.5.0/24 20 1/Int. 8 Dut-B

1.2.3.2 0 0

1.3.4.0/24 10 1/Int. 8 Dut-C

0.0.0.0 0 0

1.3.5.0/24 [L] 30 1/Int. 11 Dut-B

1.2.3.2 0 0

1.4.5.0/24 20 1/Int. 8 Dut-D

1.3.4.4 0 0

2.3.4.0/24 40 1/Int. 11 Dut-D

1.3.4.4 0 0

4.0.0.1/32 10 1/Int. 8 Dut-D

1.3.4.4 0 0/1[NnP]

10.20.1.2/32 10 1/Int. 8 Dut-B

1.2.3.2 0 0/1002[NnP]

10.20.1.3/32 0 1/Int. 5 Dut-C

0.0.0.0 0 0/1003[NnP]

10.20.1.4/32 10 1/Int. 8 Dut-D

1.3.4.4 0 0/1004[NnP]

10.20.1.5/32 [L] 20 1/Int. 11 Dut-B

1.2.3.2 0 0/1005[NnP]

10.21.1.2/32 10 1/Int. 8 Dut-B

1.2.3.2 0 0

10.21.1.3/32 0 1/Int. 5 Dut-C

0.0.0.0 0 0

10.21.1.4/32 10 1/Int. 8 Dut-D

1.3.4.4 0 0

10.21.1.5/32 [L] 20 1/Int. 11 Dut-B

1.2.3.2 0 0

-------------------------------------------------------------------------------

No. of Routes: 16 (16 paths)

-------------------------------------------------------------------------------

Flags : L = LFA nexthop available

SID[F] : R = Re-advertisement

N = Node-SID

nP = no penultimate hop POP

E = Explicit-Null

V = Prefix-SID carries a value

L = value/index has local significance

===============================================================================

*A:Dut-C# show router isis routes ipv4-unicast alternative

===============================================================================

Rtr Base ISIS Instance 0 Route Table (alternative)

===============================================================================

Prefix[Flags] Metric Lvl/Typ Ver. SysID/Hostname

NextHop MT AdminTag/SID[F]

Alt-Nexthop Alt- Alt-Type

Metric

-------------------------------------------------------------------------------

1.2.3.0/24 10 1/Int. 8 Dut-C

0.0.0.0 0 0

1.2.4.0/24 20 1/Int. 8 Dut-D

1.3.4.4 0 0

1.2.5.0/24 20 1/Int. 8 Dut-B

1.2.3.2 0 0

1.3.4.0/24 10 1/Int. 8 Dut-C

0.0.0.0 0 0

1.3.5.0/24 30 1/Int. 11 Dut-B

1.2.3.2 0 0

1.3.4.4(L) 30 NP

1.4.5.0/24 20 1/Int. 8 Dut-D

1.3.4.4 0 0

2.3.4.0/24 40 1/Int. 11 Dut-D

1.3.4.4 0 0

4.0.0.1/32 10 1/Int. 8 Dut-D

1.3.4.4 0 0/1[NnP]

10.20.1.2/32 10 1/Int. 8 Dut-B

1.2.3.2 0 0/1002[NnP]

10.20.1.3/32 0 1/Int. 5 Dut-C

0.0.0.0 0 0/1003[NnP]

10.20.1.4/32 10 1/Int. 8 Dut-D

1.3.4.4 0 0/1004[NnP]

10.20.1.5/32 20 1/Int. 11 Dut-B

1.2.3.2 0 0/1005[NnP]

1.3.4.4(L) 20 NP

10.21.1.2/32 10 1/Int. 8 Dut-B

1.2.3.2 0 0

10.21.1.3/32 0 1/Int. 5 Dut-C

0.0.0.0 0 0

10.21.1.4/32 10 1/Int. 8 Dut-D

1.3.4.4 0 0

10.21.1.5/32 20 1/Int. 11 Dut-B

1.2.3.2 0 0

1.3.4.4(L) 20 NP

-------------------------------------------------------------------------------

No. of Routes: 16 (18 paths)

Flags : L = Loop-Free Alternate nexthop

Alt-Type : LP = linkProtection, NP = nodeProtection

SID[F] : R = Re-advertisement

N = Node-SID

nP = no penultimate hop POP

E = Explicit-Null

V = Prefix-SID carries a value

L = value/index has local significance

===============================================================================

*A:Dut-C#

*A:Dut-C# show router isis routes detail 195.0.0.0/8

===============================================================================

Rtr Base ISIS Instance 0 Route Table (detail)

===============================================================================

Prefix : 195.0.0.0/8

Status : Active Level : 1

NextHop : 1.2.3.2

Metric : 11 Type : Internal

SPF Version : 6 SysID/Hostname : Dut-B

MT : 0 AdminTag : 0

-------------------------------------------------------------------------------

Prefix : 195.0.0.0/8

Status : Active Level : 1

NextHop : 2.2.3.2

Metric : 11 Type : Internal

SPF Version : 6 SysID/Hostname : Dut-B

MT : 0 AdminTag : 0

-------------------------------------------------------------------------------

Prefix : 195.0.0.0/8

Status : Active Level : 1

NextHop : 3.2.3.2

Metric : 11 Type : Internal

SPF Version : 6 SysID/Hostname : Dut-B

MT : 0 AdminTag : 0

-------------------------------------------------------------------------------

Prefix : 195.0.0.0/8

Status : Active Level : 1

NextHop : 4.2.3.2

Metric : 11 Type : Internal

SPF Version : 6 SysID/Hostname : Dut-B

MT : 0 AdminTag : 0

-------------------------------------------------------------------------------

Prefix : 195.0.0.0/8

Status : Active Level : 1

NextHop : 5.2.3.2

Metric : 11 Type : Internal

SPF Version : 7 SysID/Hostname : Dut-B

MT : 0 AdminTag : 0

-------------------------------------------------------------------------------

Prefix : 195.0.0.0/8

Status : Active Level : 1

NextHop : 6.2.3.2

NextHop Status : NHOP discard

Metric : 11 Type : Internal

SPF Version : 7 SysID/Hostname : Dut-B

MT : 0 AdminTag : 0

-------------------------------------------------------------------------------

No. of Routes: 1 (6 paths)

-------------------------------------------------------------------------------

SID[F] : R = Re-advertisement

N = Node-SID

nP = no penultimate hop POP

E = Explicit-Null

V = Prefix-SID carries a value

L = value/index has local significance

===============================================================================

*A:Dut-C#

Sample Output

A:Dut-A# show router isis 0 routes flex-algo all

===============================================================================

Rtr Base ISIS Instance 0 Flex-Algo 128 Route Table

===============================================================================

Prefix[Flags] Metric Lvl/Typ Ver. SysID/Hostname

NextHop MT AdminTag/SID[F]

-------------------------------------------------------------------------------

10.20.1.1/32 0 1/Int. 93 Dut-A

0.0.0.0 0 0/11[NnP]

10.20.1.2/32 200 2/Int. 89 Dut-C

10.10.10.6 0 0/12[NnP]

10.20.1.3/32 100 2/Int. 89 Dut-C

10.10.10.6 0 0/13[NnP]

10.20.1.4/32 300 2/Int. 96 Dut-C

10.10.10.6 0 0/14[RNnP]

-------------------------------------------------------------------------------

No. of Routes: 4 (4 paths)

-------------------------------------------------------------------------------

Flags : L = LFA nexthop available

SID[F] : R = Re-advertisement

N = Node-SID

nP = no penultimate hop POP

E = Explicit-Null

V = Prefix-SID carries a value

L = value/index has local significance

===============================================================================

Table 50: IS-IS Route Output Fields

Label	Description
Prefix	The route prefix and mask.
Metric MT	The route’s metric.
Lvl/Type	Specifies the level (1 or 2) and the route type, Internal (Int) or External (Ext).
Version	SPF version that generated route.
Nexthop	System ID of nexthop, give hostname if possible.
SysID/Hostname	Hostname for the specific system-id.
Status	IS-IS status.
Nexthop Status	The status of the next hop.
SPF Version	The SPF version that generated the route.
MT	The route’s metric.
AdminTag	The number of administrative tags.
No. of Routes	The total number of routes.
SID[F]	The segment identifier flags of a Prefix-SID as defined by IETF segment routing. R: Re-advertisement flag. If set, then the prefix to which this Prefix-SID is attached, has been propagated by the router either from another level (in other words, from level-1 to level-2 or the opposite) or from redistribution (for example, from another protocol). N: Node-SID flag. The N-Flag is set on Prefix-SIDs attached to a router loopback address. nP: no-PHP flag. If set, then the penultimate hop must not pop the Prefix-SID before delivering the packet to the node that advertised the Prefix-SID. E: Explicit-Null Flag. If set, any upstream neighbor of the Prefix-SID originator must replace the Prefix-SID with a Prefix-SID having an Explicit-NULL value (0 for IPv4 and 2 for IPv6) before forwarding the packet. V: Value flag. If set, then the Prefix-SID carries a value (instead of an index). L: Local Flag. If set, then the value/index carried by the Prefix-SID has local significance.

sid-stats

Syntax

sid-stats adj [interface-name]

sid-stats adj-set [id]

sid-stats node [ip-prefix[/prefix-length]] [algo algo-id]

sid-stats summary

Context

show>router>isis

Description

This command displays information about IGP SIDs statistics.

Parameters

adj—

Displays the ingress and egress statistics, if any, of the adjacency SID specified by the corresponding interface name. Displays statistics for all adjacency SIDs if none is specified.

interface-name—

Displays only the SID statistics identified by this interface name up to 32 characters.

adj-set—

Displays the ingress and egress statistics, if any, of the adjacency set specified by its associated ID. Displays statistics for all adjacency sets if none is specified.

id—

Displays the adjacency set ID.

Values—

0 to 4294967295

node—

Displays the ingress and egress statistics, if any, of the node SID specified by the corresponding prefix. Displays statistics for all node SIDs if none is specified.

ip-prefix[/prefix-length]—

Displays information for the specified IP prefix and prefix length.

Values—

ipv4-prefix:

a.b.c.d (host bits must be 0)

ipv4-prefix-length: [0 to 32]

algo algo-id—

Displays information for the specified algorithm only.

Values—

0 to 255

summary—

Displays statistics indices usage for SID statistics.

Output

The following outputs are an example of SID statistics information and Table 51 describes the output fields.

Sample Output

The show router isis sid-stats adj command displays statistics for adjacency SIDs.

A:Dut-A# show router isis 0 sid-stats node

===============================================================================

Rtr Base ISIS Instance 0 Sid Statistics

===============================================================================

Ingress Label : 20001 Type : node

Prefix : 10.20.1.1/32

Algorithm : 0

Ingress Oper State: disabled Egress Oper State : disabled

Ingress Octets : 0 Egress Octets : 0

Ingress Packets : 0 Egress Packets : 0

Ingress Label : 20002 Type : node

Prefix : 10.20.1.2/32

Algorithm : 0

Ingress Oper State: disabled Egress Oper State : disabled

Ingress Octets : 0 Egress Octets : 0

Ingress Packets : 0 Egress Packets : 0

Ingress Label : 20003 Type : node

Prefix : 10.20.1.3/32

Algorithm : 0

Ingress Oper State: disabled Egress Oper State : disabled

Ingress Octets : 0 Egress Octets : 0

Ingress Packets : 0 Egress Packets : 0

Ingress Label : 20004 Type : node

Prefix : 10.20.1.4/32

Algorithm : 0

Ingress Oper State: disabled Egress Oper State : disabled

Ingress Octets : 0 Egress Octets : 0

Ingress Packets : 0 Egress Packets : 0

Ingress Label : 20011 Type : node

Prefix : 10.20.1.1/32

Algorithm : 128

Ingress Oper State: disabled Egress Oper State : disabled

Ingress Octets : 0 Egress Octets : 0

Ingress Packets : 0 Egress Packets : 0

Ingress Label : 20012 Type : node

Prefix : 10.20.1.2/32

Algorithm : 128

Ingress Oper State: disabled Egress Oper State : disabled

Ingress Octets : 0 Egress Octets : 0

Ingress Packets : 0 Egress Packets : 0

Ingress Label : 20013 Type : node

Prefix : 10.20.1.3/32

Algorithm : 128

Ingress Oper State: disabled Egress Oper State : disabled

Ingress Octets : 0 Egress Octets : 0

Ingress Packets : 0 Egress Packets : 0

Ingress Label : 20014 Type : node

Prefix : 10.20.1.4/32

Algorithm : 128

Ingress Oper State: disabled Egress Oper State : disabled

Ingress Octets : 0 Egress Octets : 0

Ingress Packets : 0 Egress Packets : 0

-------------------------------------------------------------------------------

Sid count : 8

===============================================================================

Table 51: SID Statistics Adjacency Set Output Fields

Label	Description
Label	The ILM MPLS label corresponding to the SID.
Type	The type of the SID.
Prefix	The prefix corresponding to the node SID, or the IP address of the neighbor (adjacency SID) or the destination IP associated to the adjacency set.
Interface	The OSPF interface.
Ingress Oper State	Indicates if ingress statistics are enabled or disabled, or if no statistics index is allocated to that SID (no resources).
Egress Oper State	Indicates if egress statistics are enabled or disabled, or if no statistics index is allocated to that SID (no resources).
Ingress Octets	The number of octets received on ingress for that SID.
Egress Octets	The number of octets sent on egress for that SID.
Ingress Packets	The number of packets received on ingress for that SID.
Egress Packets	The number of packets sent on egress for that SID.
Algorithm	The used algorithm for the SID.

spf-log

Syntax

spf-log [detail]

Context

show>router>isis

Description

This command displays IS-IS SPF log information.

Parameters

detail—

Displays detailed spf-log information.

Output

The following output is an example of SPF log information.

Sample Output

*A:Dut-C# show router isis spf-log

===============================================================================

Rtr Base ISIS Instance 0 SPF Log

===============================================================================

When Duration L1 Nodes L2 Nodes Event Count Type

-------------------------------------------------------------------------------

01/26/2015 11:22:19 <0.01s - - - pLfa

01/26/2015 11:22:19 <0.01s - - - rLfa

01/26/2015 11:22:20 <0.01s 4 4 25 Reg

01/26/2015 11:22:20 <0.01s - - - Lfa

01/26/2015 11:22:20 <0.01s - - - rLfa

01/26/2015 11:22:24 <0.01s 4 4 11 Reg

01/26/2015 11:22:24 <0.01s - - - Lfa

01/26/2015 11:22:24 <0.01s - - - rLfa

01/26/2015 11:22:32 <0.01s 4 4 21 Reg

01/26/2015 11:22:32 <0.01s - - - Lfa

01/26/2015 11:22:32 <0.01s - - - rLfa

01/26/2015 11:22:33 <0.01s - - - pSpf

01/26/2015 11:22:33 <0.01s - - - pLfa

01/26/2015 11:22:33 <0.01s - - - rLfa

01/26/2015 11:22:41 <0.01s - - - pSpf

01/26/2015 11:22:41 <0.01s - - - pLfa

01/26/2015 11:22:41 <0.01s - - - rLfa

01/26/2015 11:22:51 <0.01s 4 4 4 Reg

01/26/2015 11:22:51 <0.01s - - - Lfa

01/26/2015 11:22:51 <0.01s - - - rLfa

-------------------------------------------------------------------------------

Log Entries : 20

===============================================================================

*A:Dut-C#

A:SetupCLI# show router isis spf-log detail

===============================================================================

Rtr Base ISIS Instance 0 SPF Log

===============================================================================

When : 10/01/2011 03:40:25 Duration : <0.01s

L1 Nodes : 1 L2 Nodes : 1

Trigger LSP: SetupCLI.00-00 Event Count : 78

SPF Type : Reg

Reason : LSPCONTENT

When : 10/01/2011 03:40:26 Duration : <0.01s

L1 Nodes : 1 L2 Nodes : 1

Trigger LSP: SetupCLI.00-00 Event Count : 1

SPF Type : Reg

Reason : LSPCONTENT

When : 10/01/2011 03:40:25 Duration : <0.01s

L1 Nodes : 1 L2 Nodes : 1

Trigger LSP: SetupCLI.00-00 Event Count : 25

SPF Type : Reg

Reason : NEWAREA NEWREACH LSPCONTENT MANUALREQ

When : 10/01/2011 03:40:27 Duration : <0.01s

L1 Nodes : 1 L2 Nodes : 1

Trigger LSP: SetupCLI.00-00 Event Count : 1

SPF Type : Reg

Reason : LSPCONTENT

When : 10/01/2011 03:40:27 Duration : <0.01s

L1 Nodes : 0 L2 Nodes : 0

Trigger LSP: SetupCLI.00-00 Event Count : 1

SPF Type : Lfa

Reason : LSPCONTENT

When : 10/01/2011 03:40:25 Duration : <0.01s

L1 Nodes : 1 L2 Nodes : 1

Trigger LSP: SetupCLI.00-00 Event Count : 75

SPF Type : Reg

Reason : LSPCONTENT

When : 10/01/2011 03:40:27 Duration : <0.01s

L1 Nodes : 1 L2 Nodes : 1

Trigger LSP: SetupCLI.00-00 Event Count : 1

SPF Type : Reg

Reason : LSPCONTENT

===============================================================================

A:SetupCLI#

Table 52 describes the IS-IS SPF log output fields.

Table 52: IS-IS SPF Log Output Fields

Label	Description
When	Displays the timestamp when the SPF run started on the system.
Duration	Displays the time (in hundredths of a second) required to complete the SPF run.
L1 Nodes	Displays the number of Level 1 nodes involved in the SPF run.
L2 Nodes	Displays the number of Level 2 nodes involved in the SPF run.
Event Count	Displays the number of SPF events that triggered the SPF calculation.
Type	Displays the SPF type, Reg (regular) or Lfa (loop free alternative).
Trigger LSP	Displays the LSP that triggered the SPF run.
Reason	Displays the reason(s) for the SPF run. NEWADJ: An adjacency changed. NEWLSP: A new LSP was received. NEWAREA: An area changed. NEWREACH: A prefix changed. ECMPCHANGED: An ECMP path changed. NEWMETRIC: A prefix metric changed. RESTART: The graceful restart exited. LSPEXPIRED: An LSP expired. DBCHANGED: The LSP database was cleared by an administrator. LSPCONTENT: The content of an LSP changed. NEWPREF: The external route preference changed. NEWNLPID: The routed protocols (IPv4 or IPv6) changed. MANUALREQ: An SPF calculation was requested by an administrator. ADMINTAGCHANGED: An administrative tag changed. TUNNELCHANGED: An MPLS tunnel changed.

sr-adj-sets

Syntax

sr-adj-sets [adjacency-set-id] [detail]

Context

show>router>isis

Description

This command displays IS-IS SR adjacency set log information.

Parameters

adjacency-set-id—

Displays SR adjacency set ID information.

Values—

1 to 4294967295

detail—

Displays detailed SR adjacency set information.

Output

The following output is an example of sr-adj-sets log information.

Sample Output

*A:Dut-C# show router isis sr-adj-sets

===============================================================================

Rtr Base ISIS Instance 0 Adjacency Sets

===============================================================================

ID State Label Label Members Members Neighbor

Value Type Total Active System Id

-------------------------------------------------------------------------------

1003 active 524285 DL 1 1 0100.2000.1001

1006 active 524284 DL 1 1 0100.2000.1005

1015 active 18448 SL 1 1 0100.2000.1001

1018 active 18451 SL 1 1 0100.2000.1005

1027 active 524283 DL 1 1 0100.2000.1001

1030 active 524282 DL 1 1 0100.2000.1005

1039 active 18460 SL 1 1 0100.2000.1001

1042 active 18463 SL 1 1 0100.2000.1005

1050 active 524281 DL 2 2 none

1056 active 18471 SL 2 2 none

1063 active 524280 DL 1 1 0100.2000.1001

1066 active 524279 DL 1 1 0100.2000.1005

1075 active 18478 SL 1 1 0100.2000.1001

1078 active 18481 SL 1 1 0100.2000.1005

1087 active 524278 DL 1 1 0100.2000.1001

1090 active 524277 DL 1 1 0100.2000.1005

1099 active 18490 SL 1 1 0100.2000.1001

1102 active 18493 SL 1 1 0100.2000.1005

1110 active 524276 DL 2 2 none

1116 active 18501 SL 2 2 none

-------------------------------------------------------------------------------

DL: dynamic local

SL: static local

-------------------------------------------------------------------------------

No. of SR Adjacency Sets: 20

===============================================================================

Table 53 describes the IS-IS sr-adj-sets output fields.

Table 53: IS-IS SR Adjacency Set Output Fields

Label	Description
ID	Displays the ID
State	Displays the state (active or inactive)
Label Value	Displays the label value
Label Type	Displays the label type, Dynamic Local (DL) or Static Local (SL)
Members Total	Displays the number of total members
Members Active	Displays the number of active members
Neighbor System Id	Displays the neighbor system ID
No. of SR Adjacency Sets	Displays the number of SR adjacency sets

sr-lfa-coverage

Syntax

sr-lfa-coverage [flex-algo {flex-algo-id | all}]

Context

show>router>isis

Description

This command displays IS-IS SR LFA coverage information. This corresponds to the coverage provided by the various LFA algorithms for SR-ISIS tunnel, SR-TE LSP, and LDP FEC if the fast-reroute backup-sr-tunnel option is enabled. The LFA algorithms activate the backup next hops in the following preference order:

TI-LFA
LFA
R-LFA

Parameters

flex-algo flex-algo-id—

Displays SR LFA coverage information for the specified algorithm.

Values—

128 to 255

all—

Displays all the flexible algorithms that are configured.

Values—

128 to 255, all

Output

The following output is an example of SR LFA coverage information, and Table 54 describes the output fields.

Sample Output

*A:Dut-C>config>router>isis# show router isis 0 sr-lfa-coverage

===============================================================================

Rtr Base ISIS Instance 0 SR LFA Coverage

===============================================================================

MT-ID SidType Level Proto LFA RLFA TILFA Coverage

-------------------------------------------------------------------------------

node-sid 4(40%) 6(60%) 0(0%) 10/10(100%)

adj-sid 0(0%) 2(100%) 0(0%) 2/2(100%)

===============================================================================

Sample Output

A:Dut-A# show router isis 0 sr-lfa-coverage flex-algo 128

===============================================================================

Rtr Base ISIS Instance 0 Flex-Algo 128 SR LFA Coverage

===============================================================================

MT-ID SidType Level Proto LFA RLFA TILFA Coverage

-------------------------------------------------------------------------------

No Matching Entries

===============================================================================

A:Dut-A# show router isis 0 sr-lfa-coverage flex-algo all

===============================================================================

Rtr Base ISIS Instance 0 Flex-Algo 128 SR LFA Coverage

===============================================================================

MT-ID SidType Level Proto LFA RLFA TILFA Coverage

-------------------------------------------------------------------------------

No Matching Entries

===============================================================================

Table 54 describes the IS-IS SR LFA coverage output fields.

Table 54: IS-IS SR LFA Coverage Output Fields

Label	Description
MT-ID	Displays the MT identification
SidType	Displays the SID type
Level	Displays the level
Proto	Displays the protocol
LFA	Displays the LFA
RLFA	Displays the RLFA
TIFLA	Displays the TI-LFA
Coverage	Displays the percentage of coverage

statistics

Syntax

statistics

Context

show>router>isis

Description

This command displays information regarding IS-IS traffic statistics.

Output

The following output is an example of IS-IS statistics output.

Sample Output

*A:Dut-C# show router isis statistics

===============================================================================

Rtr Base ISIS Instance 0 Statistics

===============================================================================

ISIS Instance : 0

Purge Initiated : 0 LSP Regens. : 17

Sid SRGB err : 0 Sid dupl err : 0

CSPF Statistics

Requests : 0 Request Drops : 0

Paths Found : 0 Paths Not Found: 0

SPF Statistics

SPF Runs : 7

Last runTimeStamp: 01/26/2015 11:22:50

Partial SPF Runs : 3

Last runTimeStamp: 01/26/2015 11:22:51

LFA Statistics

LFA Runs : 7

Last runTimeStamp: 01/26/2015 11:22:51

Partial LFA Runs : 3

Last runTimeStamp: 01/26/2015 11:22:41

RLFA Statistics

RLFA Runs : 10

Last runTimeStamp: 01/26/2015 11:22:51

-------------------------------------------------------------------------------

PDU Type Received Processed Dropped Sent Retransmitted

-------------------------------------------------------------------------------

LSP 164 164 0 151 0

IIH 146 146 0 147 0

CSNP 288 288 0 291 0

PSNP 71 71 0 74 0

Unknown 0 0 0 0 0

===============================================================================

*A:Dut-C#

Table 55 describes IS-IS statistics output fields.

Table 55: IS-IS Statistics Output Fields

Label	Description
Purge Initiated	The number of times purges have been initiated.
SPF Runs	The number of times shortest path first calculations have been made.
LSP Regens	The count of LSP regenerations.
Requests	The number of CSPF requests made to the protocol.
Paths Found	The number of responses to CSPF requests for which paths satisfying the constraints were found.
PDU Type	The PDU type.
Received	The count of link state PDUs received by this instance of the protocol.
Processed	The count of link state PDUs processed by this instance of the protocol.
Dropped	The count of link state PDUs dropped by this instance of the protocol.
Sent	The count of link state PDUs sent out by this instance of the protocol.
Retransmitted	The count of link state PDUs that had to be retransmitted by this instance of the protocol.

status

Syntax

status

Context

show>router>isis

Description

This command displays information regarding IS-IS status.

Output

The following output is an example of IS-IS status, and Table 56 describes the output fields.

Sample Output

===============================================================================

*A:Dut-A# show router isis status

===============================================================================

Rtr Base ISIS Instance 0 Status

===============================================================================

ISIS Cfg System Id : 0000.0000.0000

ISIS Oper System Id : 0100.2000.1001

ISIS Cfg Router Id : 0.0.0.0

ISIS Oper Router Id : 10.20.1.1

ASN : 0

Admin State : Up

Oper State : Up

Ipv4 Routing : Enabled

Ipv6 Routing : Disabled

Mcast Ipv4 Routing : Enabled, Native

Mcast Ipv6 Routing : Disabled

Last Enabled : 07/06/2017 21:29:26

Level Capability : L1L2

Authentication Check : True

Auth Keychain : Disabled

Authentication Type : None

CSNP-Authentication : Enabled

HELLO-Authentication : Enabled

PSNP-Authentication : Enabled

Traffic Engineering : Enabled

Graceful Restart : Disabled

GR Helper Mode : Disabled

Overload-On-Boot Tim*: 0

Overload Max-Metric : False

Overload-On-Boot Max*: False

Ovl Export Interlevel: Disabled

Ovl Export External : Disabled

LSP Lifetime : 1200

LSP Refresh Half Int*: 600 (Config) 600 (Oper)

LSP Wait : 5000 ms (Max) 10 ms (Initial) 1000 ms (Second)

LSP MTU Size : 1492 (Config)

L1 LSP MTU Size : 1492 (Config) 1492 (Oper)

L2 LSP MTU Size : 1492 (Config) 1492 (Oper)

L1 MAX LSP MTU Size : 9187

L2 MAX LSP MTU Size : 1497

Adjacency Check : loose

L1 Auth Keychain : Disabled

L1 Auth Type : none

L1 CSNP-Authenticati*: Enabled

L1 HELLO-Authenticat*: Enabled

L1 PSNP-Authenticati*: Enabled

L1 Preference : 15

L1 Ext. Preference : 160

L1 Wide Metrics : Disabled

L1 LSDB Overload : Disabled

L1 LSPs : 1

L1 Default Metric : 10

L1 IPv6 Def Metric : 10

L1 Mcast IPv4 Def Me*: 10

L1 Mcast IPv6 Def Me*: 10

L1 Adv Router Cap : Enabled

Last SPF : 07/06/2017 21:30:10

SPF Wait : 10000 ms (Max) 1000 ms (Initial) 1000 ms (Second)

Multi-topology : Disabled

IPv6-Unicast MT2 : Disabled

IPv4-Multicast MT3 : Disabled

IPv6-Multicast MT4 : Disabled

Area Addresses : 30.31

Total Exp Routes(L1) : 0

Standard Multi-Insta*: Disabled

IID TLV : Disabled

Prefix Attributes TLV: Disabled

All-L1-MacAddr (Cfg) : 01:80:c2:00:00:14

L2 Auth Keychain : Disabled

L2 Auth Type : none

L2 CSNP-Authenticati*: Enabled

L2 HELLO-Authenticat*: Enabled

L2 PSNP-Authenticati*: Enabled

L2 Preference : 18

L2 Ext. Preference : 165

L2 Wide Metrics : Enabled

L2 LSDB Overload : Disabled

L2 LSPs : 6

L2 Default Metric : 10

L2 IPv6 Def Metric : 10

L2 Mcast IPv4 Def Me*: 10

L2 Mcast IPv6 Def Me*: 10

L2 Adv Router Cap : Enabled

Export Policies : None

Import Policies : None

LFA Policies : None

Multicast Import : None

Advertise-Passive-On*: Disabled

Ignore Attached Bit : Disabled

Suppress Attached Bit: Disabled

Default Route Tag : None

Rib Prio List High : None

Rib Prio Tag High : None

Ldp Sync Admin State : Up

LDP-over-RSVP : Disabled

IGP-Shortcut : Disabled

IPv4 IGP SC Tunn-Nhop: Res-Disabled

IPv6 IGP SC Tunn-Nhop: Res-Disabled

SRv4 IGP SC Tunn-Nhop: Res-Disabled

SRv6 IGP SC Tunn-Nhop: Res-Disabled

Advertise-Tunnel-Link: Disabled

Export Limit : 0

Exp Lmt Log Percent : 0

Total Exp Routes(L2) : 0

All-L2-MacAddr (Cfg) : 01:80:c2:00:00:15

Loopfree-Alternate : Disabled

Remote-LFA : Disabled

Max PQ Cost : 4261412864

TI-LFA : Disabled

Max SR FRR Labels : 2

L1 LFA : Included

L2 LFA : Included

Advertise Router Cap : Area

Hello Padding : Disabled

L1 Hello Padding : Disabled

L2 Hello Padding : Disabled

Ignore Lsp Errors : Disabled

Ignore Narrow Metric : Disabled

Reference Bandwidth : 0

Ucast Import Disable : None

Segment Routing : Up

Mapping Server : Down

Purge Originator Id : Disabled

Entropy Label : Enabled

Override ELC : Enabled

===============================================================================

* indicates that the corresponding row element may have been truncated.

*A:Dut-A#

The following sample output and detail sample output show LFA policies configured in the configure router isis context.

*A:SRR# show router isis status

===============================================================================

Rtr Base ISIS Instance 0 Status

===============================================================================

ISIS Cfg System Id : 0000.C0A8.0001

ISIS Oper System Id : 0000.C0A8.0001

ISIS Cfg Router Id : 0.0.0.0

ISIS Oper Router Id : 10.20.1.3

Admin State : Up

Oper State : Up

Ipv4 Routing : Enabled

Ipv6 Routing : Disabled

Mcast Ipv4 Routing : Enabled, Native

Mcast Ipv6 Routing : Disabled

Last Enabled : 04/29/2014 15:14:33

Level Capability : L1

Authentication Check : True

Auth Keychain : Disabled

Authentication Type : None

CSNP-Authentication : Enabled

HELLO-Authentication : Enabled

PSNP-Authentication : Enabled

Traffic Engineering : Disabled

Graceful Restart : Disabled

GR Helper Mode : Disabled

Overload-On-Boot Tim*: 0

Overload Max-Metric : False

Overload-On-Boot Max*: False

LSP Lifetime : 1200

LSP Refresh Interval : 600

LSP Wait : 5 sec (Max) 0 sec (Initial) 1 sec (Second)

LSP MTU Size : 1492 (Config) 1492 (Oper)

Adjacency Check : loose

L1 Auth Keychain : Disabled

L1 Auth Type : none

L1 CSNP-Authenticati*: Enabled

L1 HELLO-Authenticat*: Enabled

L1 PSNP-Authenticati*: Enabled

L1 Preference : 15

L1 Ext. Preference : 160

L1 Wide Metrics : Enabled

L1 LSDB Overload : Disabled

L1 LSPs : 5

L1 Default Metric : 10

L1 IPv6 Def Metric : 10

L1 Mcast IPv4 Def Me*: 10

L1 Mcast IPv6 Def Me*: 10

Last SPF : 04/29/2014 15:22:13

SPF Wait : 10 sec (Max) 1000 ms (Initial) 1000 ms (Second)

Multi-topology : Disabled

IPv6-Unicast MT2 : Disabled

IPv4-Multicast MT3 : Disabled

IPv6-Multicast MT4 : Disabled

Area Addresses : 49.0001

Total Exp Routes(L1) : 1

IID TLV : Disabled

Prefix Attributes TLV: Disabled

All-L1-MacAddr : 01:80:c2:00:00:14

L2 Auth Keychain : Disabled

L2 Auth Type : none

L2 CSNP-Authenticati*: Enabled

L2 HELLO-Authenticat*: Enabled

L2 PSNP-Authenticati*: Enabled

L2 Preference : 18

L2 Ext. Preference : 165

L2 Wide Metrics : Disabled

L2 LSDB Overload : Disabled

L2 LSPs : 0

L2 Default Metric : 10

L2 IPv6 Def Metric : 10

L2 Mcast IPv4 Def Me*: 10

L2 Mcast IPv6 Def Me*: 10

Export Policies : static

LFA Policies : pol1

: pol2

: pol3

: pol4

: pol5

Multicast Import : None

Advertise-Passive-On*: Disabled

Suppress Default : Disabled

Default Route Tag : None

Ldp Sync Admin State : Up

LDP-over-RSVP : Disabled

IGP-Shortcut : Disabled

Advertise-Tunnel-Link: Disabled

Export Limit : 0

Exp Lmt Log Percent : 0

Total Exp Routes(L2) : 0

All-L2-MacAddr : 01:80:c2:00:00:15

Loopfree-Alternate : Enabled

L1 LFA : Included

L2 LFA : Included

Advertise Router Cap : disable

Hello Padding : disable

===============================================================================

* indicates that the corresponding row element may have been truncated.

*A:SRR#

*A:SRR# show router isis interface "DUTC_TO_DUTE.1.0" detail

===============================================================================

Rtr Base ISIS Instance 0 Interfaces (detail)

===============================================================================

-------------------------------------------------------------------------------

Interface : DUTC_TO_DUTE.1.0 Level Capability: L1L2

Oper State : Up Admin State : Up

Auth Keychain : Disabled

Auth Type : None Auth State : Enabled

Circuit Id : 3 Retransmit Int. : 5

Type : Broadcast LSP Pacing Int. : 100

Oper Type : Broadcast CSNP Int. : 10

Mesh Group : Inactive BER : none

LFA NH Template : "template1" Bfd Enabled : No

Topology : IPv4-Unicast, IPv6-Unicast, IPv4-Multicast, IPv6-Multicast

Te Metric : 0 Te State : Down

Admin Groups : None

Ldp Sync : outOfService Ldp Sync Wait : Disabled

Ldp Timer State : Disabled Ldp Tm Left : 0

Route Tag : None LFA : Included

Level : 1 Adjacencies : 0

Desg. IS : Dut-C

Auth Keychain : Disabled

Auth Type : None Metric : 10

Hello Timer : 9 IPv6-Ucast-Met : 10

Priority : 64 IPv6-Mcast-Met : 10

Passive : No IPv4-Mcast-Met : 10

SD-Offset : 0 SF-Offset : 0

Hello Mult. : 3

Level : 2 Adjacencies : 0

Desg. IS : Dut-C

Auth Keychain : Disabled

Auth Type : None Metric : 10

Hello Timer : 9 IPv6-Ucast-Met : 10

Priority : 64 IPv6-Mcast-Met : 10

Passive : No IPv4-Mcast-Met : 10

SD-Offset : 0 SF-Offset : 0

Hello Mult. : 3

===============================================================================

*A:SRR#

Sample Output

The following sample output and detail sample output with flexible algorithms enabled.

A:Dut-A# show router isis 0 status

===============================================================================

Rtr Base ISIS Instance 0 Status

===============================================================================

ISIS Cfg System Id : 4900.0000.0001

ISIS Oper System Id : 4900.0000.0001

ISIS Cfg Router Id : 10.20.1.1

ISIS Oper Router Id : 10.20.1.1

ASN : 0

Admin State : Up

Oper State : Up

Ipv4 Routing : Enabled

Ipv6 Routing : Disabled

Mcast Ipv4 Routing : Enabled, Native

Mcast Ipv6 Routing : Disabled

Last Enabled : 05/28/2020 13:17:48

Level Capability : L1L2

Authentication Check : True

Auth Keychain : Disabled

Authentication Type : None

CSNP-Authentication : Enabled

HELLO-Authentication : Enabled

PSNP-Authentication : Enabled

Traffic Engineering : Disabled

Oper IPv6 TE Router Id : ::

Graceful Restart : Disabled

GR Helper Mode : Disabled

Overload-On-Boot Timeout : 0

Overload Max-Metric : False

Overload-On-Boot Max-Metric : False

Ovl Export Interlevel : Disabled

Ovl Export External : Disabled

LSP Lifetime : 1200

LSP Min Remaining Lifetime : N.A.

LSP Refresh Half Interval : 600 (Config) 600 (Oper)

LSP Wait (ms) : 5000 (Max) 10 (Initial) 1000 (Second)

LSP MTU Size : 1492 (Config)

L1 LSP MTU Size : 1492 (Config) 1492 (Oper)

L2 LSP MTU Size : 1492 (Config) 1492 (Oper)

L1 MAX LSP MTU Size : 9775

L2 MAX LSP MTU Size : 1561

Adjacency Check : loose

L1 Auth Keychain : Disabled

L1 Auth Type : none

L1 CSNP-Authentication : Enabled

L1 HELLO-Authentication : Enabled

L1 PSNP-Authentication : Enabled

L1 Preference : 15

L1 Ext. Preference : 160

L1 Wide Metrics : Enabled

L1 LSDB Overload : Disabled

L1 LSPs : 1

L1 Default Metric : 10

L1 IPv6 Def Metric : 10

L1 Mcast IPv4 Def Metric : 10

L1 Mcast IPv6 Def Metric : 10

L1 Adv Router Cap : Enabled

L1 Bier Template : None, Disabled

L1 Total Exp Routes : 0

All-L1-MacAddr (Cfg) : 01:80:c2:00:00:14

Last SPF : 06/03/2020 10:27:06

SPF Wait (ms) : 10000 (Max) 1000 (Initial) 1000 (Second)

Multi-topology : Disabled

IPv6-Unicast MT2 : Disabled

IPv4-Multicast MT3 : Disabled

IPv6-Multicast MT4 : Disabled

Area Addresses : 49.0001

Standard Multi-Instance : Disabled

IID TLV : Disabled

Prefix Attributes TLV : Disabled

L2 Auth Keychain : Disabled

L2 Auth Type : none

L2 CSNP-Authentication : Enabled

L2 HELLO-Authentication : Enabled

L2 PSNP-Authentication : Enabled

L2 Preference : 18

L2 Ext. Preference : 165

L2 Wide Metrics : Enabled

L2 LSDB Overload : Disabled

L2 LSPs : 3

L2 Default Metric : 10

L2 IPv6 Def Metric : 10

L2 Mcast IPv4 Def Metric : 10

L2 Mcast IPv6 Def Metric : 10

L2 Adv Router Cap : Enabled

L2 Bier Template : None, Disabled

L2 Total Exp Routes : 0

All-L2-MacAddr (Cfg) : 01:80:c2:00:00:15

Export Policies : None

Import Policies : None

LFA Policies : None

Multicast Import : None

Advertise-Passive-Only : Disabled

Ignore Attached Bit : Disabled

Suppress Attached Bit : Disabled

Default Route Tag : None

Rib Prio List High : None

Rib Prio Tag High : None

Ldp Sync Admin State : Up

LDP-over-RSVP : Disabled

IGP-Shortcut : Disabled

IPv4 IGP SC Tunn-Nhop : Res-Disabled

IPv6 IGP SC Tunn-Nhop : Res-Disabled

SRv4 IGP SC Tunn-Nhop : Res-Disabled

SRv6 IGP SC Tunn-Nhop : Res-Disabled

Advertise-Tunnel-Link : Disabled

Export Limit : 0

Exp Lmt Log Percent : 0

Loopfree-Alternate : Disabled

Remote-LFA : Disabled

Max PQ Cost : 4261412864

Remote-LFA (node-protect) : Disabled

Max PQ nodes (node-protect) : 16

Augment-route-table : Disabled

TI-LFA : Disabled

Max SR FRR Labels : 2

TI-LFA (node-protect) : Disabled

L1 LFA : Included

L2 LFA : Included

Advertise Router Cap : Area

Hello Padding : Disabled

L1 Hello Padding : Disabled

L2 Hello Padding : Disabled

Ignore Lsp Errors : Disabled

Ignore Narrow Metric : Disabled

Reference Bandwidth : 0

Ucast Import Disable : None

Segment Routing : Up

Flex Algo : Up

Mapping Server : Down

Purge Originator Id : Disabled

Class Based Forwarding : Disabled

Entropy Label : Enabled

Override ELC : Disabled

Micro loop avoidance : Disabled fib-delay 15

===============================================================================

Table 56: IS-IS Status Output Fields

Label	Description
System Id	The configured and operational IS-IS system ID.
Router Id	The configured and operational IS-IS router ID.
Admin State Oper State	Up — IS-IS is administratively up.
Admin State Oper State	Down — IS-IS is administratively down.
Ipv4 Routing	Enabled — IPv4 routing is enabled. Disabled — IPv4 routing is disabled.
Ipv6 Routing	Disabled — IPv6 routing is disabled. Enabled, Native — IPv6 routing is enabled. Enabled, Multi-topology — Multi-topology TLVs for IPv6 routing is enabled.
Multi-topology	Disabled — Multi-topology TLVs for IPv6 routing is disabled. Enabled — Multi-topology TLVs for IPv6 routing is enabled.
Last Enabled	The date and time when IS-IS was last enabled in the router.
Level Capability	The routing level for the IS-IS routing process.
Authentication Check	True — All IS-IS mismatched protocol packets are rejected. False — Authentication is performed on received IS-IS protocol packets but mismatched packets are not rejected.
Authentication Type	The method of authentication used to verify the authenticity of packets sent by neighboring routers on an IS-IS interface.
Traffic Engineering	Enabled — TE is enabled for the router. Disabled — TE is disabled so that TE metrics are not generated and are ignored when received by this node.
Graceful Restart	Enabled — Graceful restart is enabled for this instance of IS-IS on the router. Disabled — Graceful restart capability is disabled for this instance of IS-IS on the router.
Ldp Sync Admin State	Indicates whether the IGP-LDP synchronization feature is enabled or disabled on all interfaces participating in the OSPF routing protocol.
LFA NH Template	Indicates the LFA template that is applied for the configured LFA policies.
LFA Policies	Indicates the configured LFA policies.
Loopfree-Alternate	Indicates if Loop-Free Alternate (LFA) is enabled or disabled in this IS-IS instance.

summary-address

Syntax

summary-address [ip-address [/prefix-length]]

Context

show>router>isis

Description

This command displays IS-IS summary addresses information.

Output

Router IS-IS Summary Address Output

Table 57 describes the IS-IS summary address output fields.

Table 57: IS-IS Summary Address Output Fields

Label	Description
Address	The IP address.
Level	Specifies the IS-IS level from which the prefix should be summarized.

Sample Output

A:ALA-48# show router isis summary-address

===============================================================================

Rtr Base ISIS Instance 0 Summary Address

===============================================================================

Address Level

-------------------------------------------------------------------------------

1.0.0.0/8 L1

2.1.0.0/24 L1L2

3.1.2.3/32 L2

-------------------------------------------------------------------------------

Summary Addresses : 3

===============================================================================

A:ALA-48#

topology

Syntax

topology [ipv4-unicast | ipv6-unicast | ipv4-multicast | ipv6-multicast | mt mt-id-number] [lfa] [detail] [flex-algo {flex-algo-id | all}]

Context

show>router>isis

Description

This command shows IS-IS topology information.

Parameters

ipv4-unicast—

Displays IPv4 unicast parameters.

ipv6-unicast—

Displays IPv6 unicast parameters.

ipv4-multicast—

Displays IPv4 multicast parameters.

ipv6-multicast—

Displays IPv6 multicast parameters.

mt mt-id-number—

Displays multi-topology parameters.

Values—

0, 2, 3, 4

lfa—

Displays loop free alternative (LFA) information. This information corresponds to the backup next hops for IP links and nodes written in RTM by the base LFA feature.

detail—

Displays detailed topology information.

flex-algo flex-algo-id—

Displays information about the specified algorithm only based on the flex-algo-id fiter.

Values—

128 to 255

all—

Displays topology information for all the flexible algorithms.

Output

The following output is an example of router IS-IS topology output, and Table 58 describes the output fields.

Sample Output

*A:Dut-A# show router isis topology

===============================================================================

Rtr Base ISIS Instance 0 Topology Table

===============================================================================

Node Interface Nexthop

-------------------------------------------------------------------------------

IS-IS IP paths (MT-ID 0), Level 1

-------------------------------------------------------------------------------

Dut-B.00 ip-3FFE::A0A:101 Dut-B

Dut-B.01 ip-3FFE::A0A:101 Dut-B

Dut-CA.00 ip-3FFE::A0A:101 Dut-B

Dut-CA.01 ip-3FFE::A0A:101 Dut-B

Dut-CA.02 ip-3FFE::A0A:101 Dut-B

Dut-CA.05 ip-3FFE::A0A:101 Dut-B

Dut-DA.00 ip-3FFE::A0A:101 Dut-B

Dut-DA.01 ip-3FFE::A0A:101 Dut-B

Dut-E.00 ip-3FFE::A0A:101 Dut-B

Dut-F.00 ies-1-3FFE::A0A:1501 Dut-F

Dut-F.01 ies-1-3FFE::A0A:1501 Dut-F

Dut-F.02 ies-1-3FFE::A0A:1501 Dut-F

-------------------------------------------------------------------------------

IS-IS IPv6 paths (MT-ID 2), Level 1

-------------------------------------------------------------------------------

Dut-B.00 ip-3FFE::A0A:101 Dut-B

Dut-B.01 ip-3FFE::A0A:101 Dut-B

Dut-CA.00 ip-3FFE::A0A:101 Dut-B

Dut-CA.01 ip-3FFE::A0A:101 Dut-B

Dut-CA.02 ip-3FFE::A0A:101 Dut-B

Dut-CA.05 ip-3FFE::A0A:101 Dut-B

Dut-DA.00 ip-3FFE::A0A:101 Dut-B

Dut-DA.01 ip-3FFE::A0A:101 Dut-B

Dut-E.00 ip-3FFE::A0A:101 Dut-B

Dut-F.00 ies-1-3FFE::A0A:1501 Dut-F

Dut-F.01 ies-1-3FFE::A0A:1501 Dut-F

Dut-F.02 ies-1-3FFE::A0A:1501 Dut-F

-------------------------------------------------------------------------------

IS-IS IP paths (MT-ID 0), Level 2

-------------------------------------------------------------------------------

Dut-B.00 ip-3FFE::A0A:101 Dut-B

Dut-B.01 ip-3FFE::A0A:101 Dut-B

Dut-CA.00 ip-3FFE::A0A:101 Dut-B

Dut-CA.01 ip-3FFE::A0A:101 Dut-B

Dut-CA.02 ip-3FFE::A0A:101 Dut-B

Dut-CA.05 ip-3FFE::A0A:101 Dut-B

Dut-DA.00 ip-3FFE::A0A:101 Dut-B

Dut-DA.01 ip-3FFE::A0A:101 Dut-B

Dut-E.00 ip-3FFE::A0A:101 Dut-B

Dut-F.00 ies-1-3FFE::A0A:1501 Dut-F

Dut-F.01 ies-1-3FFE::A0A:1501 Dut-F

Dut-F.02 ies-1-3FFE::A0A:1501 Dut-F

-------------------------------------------------------------------------------

IS-IS IPv6 paths (MT-ID 2), Level 2

-------------------------------------------------------------------------------

Dut-B.00 ip-3FFE::A0A:101 Dut-B

Dut-B.01 ip-3FFE::A0A:101 Dut-B

Dut-CA.00 ip-3FFE::A0A:101 Dut-B

Dut-CA.01 ip-3FFE::A0A:101 Dut-B

Dut-CA.02 ip-3FFE::A0A:101 Dut-B

Dut-CA.05 ip-3FFE::A0A:101 Dut-B

Dut-DA.00 ip-3FFE::A0A:101 Dut-B

Dut-DA.01 ip-3FFE::A0A:101 Dut-B

Dut-E.00 ip-3FFE::A0A:101 Dut-B

Dut-F.00 ies-1-3FFE::A0A:1501 Dut-F

Dut-F.01 ies-1-3FFE::A0A:1501 Dut-F

Dut-F.02 ies-1-3FFE::A0A:1501 Dut-F

===============================================================================

*A:Dut-A#

Sample Output

A:Dut-A# show router isis 0 topology

===============================================================================

Rtr Base ISIS Instance 0 Topology Table

===============================================================================

Node Interface Nexthop

-------------------------------------------------------------------------------

IS-IS IP paths (MT-ID 0), Level 2

-------------------------------------------------------------------------------

Dut-B.00 To_B Dut-B

Dut-C.00 To_C Dut-C

===============================================================================

A:Dut-A#

A:Dut-A# show router isis 0 topology flex-algo 128

===============================================================================

Rtr Base ISIS Instance 0 Flex-Algo 128 Topology Table

===============================================================================

Node Interface Nexthop

-------------------------------------------------------------------------------

IS-IS IP paths (MT-ID 0), Level 2

-------------------------------------------------------------------------------

Dut-B.00 To_C Dut-C

Dut-C.00 To_C Dut-C

===============================================================================

Table 58: IS-IS Topology Output Fields

Label	Description
Node	Displays the IP address.
Interface	Displays the interface name.
Nexthop	Displays the nexthop IP address.
LFA Interface	Displays the LFA interface name.
LFA Nexthop	Displays the LFA nexthop IP address.

4.10.2.2. Clear Commands

isis

Syntax

isis [isis-instance]

Context

clear>router>isis

Description

This command enables the context to clear and reset IS-IS protocol entities.

Parameters

isis-instance—

Specifies the instance ID for the IS-IS instance.

Values—

1 to 31

adjacency

Syntax

adjacency [system-id]

Context

clear>router>isis

Description

This command clears and resets the entries from the IS-IS adjacency database.

Parameters

system-id—

When the system ID is entered, only the specified entries are removed from the IS-IS adjacency database.

database

Syntax

database [system-id]

Context

clear>router>isis

Description

This command removes the entries from the IS-IS link-state database which contains information about PDUs.

Parameters

system-id—

When the system ID is entered, only the specified entries are removed from the IS-IS link-state database.

export

Syntax

export

Context

clear>router>isis

Description

This command re-evaluates route policies participating in the export mechanism, either as importers or exporters of routes.

overload

Syntax

overload {rtm | fib | prefix-limit}

Context

clear>router>isis

Description

This command clears the IS-IS overload.

Parameters

rtm—

Clears the overload because IS-IS reached the configured maximum route limit set with maximum-routes or maximum-ipv6-routes in a VPRN.

fib —

Clears the overload because adding routes to the hardware FIB failed.

prefix-limit —

Clears the overload when IS-IS has reached the configured maximum prefix limit set with the prefix-limit command.

spf-log

Syntax

spf-log

Context

clear>router>isis

Description

This command clears the SPF log.

statistics

Syntax

statistics

Context

clear>router>isis

Description

This command clears and resets IS-IS statistics.

4.10.2.3. Debug Commands

isis

Syntax

isis [isis-instance]

Context

debug>router

Description

This command enables the context to debug IS-IS protocol entities.

Parameters

isis-instance—

Specifies the IS-IS instance.

Values—

1 to 31

Output

Sample output for the command is shown below.

Sample Output

*A:Dut-C# /tools dump router isis sr-database prefix 10.20.1.5 detail

===============================================================================

Rtr Base ISIS Instance 0 SR Database

===============================================================================

103 474390 10.20.1.5 LfaNhops 1 0 15 1000 1 1

1492 1500 1500 0 0 1 1 0100.2000.1005 SR_ERR_OK

IP:10.10.5.5 gifId:3 ifId:4 protectId:7 numLabels:1 outLbl:474390 isAdv:1 is

LfaX:0

IP:10.10.12.2 gifId:5 ifId:6 protectId:0 numLabels:2 outLbl1:474389 outLbl2:

474390 numLfaNhops:1 isAdv:0

-------------------------------------------------------------------------------

D = duplicate pending

xL = exclude from LFA

rL = remote LFA

Act = tunnel active

LDP = LDP FEC is the SID NH for SR-LDP stitching

===============================================================================

*A:Dut-C# /tools dump router isis sr-database nh-type ldp detail

===============================================================================

Rtr Base ISIS Instance 0 SR Database

===============================================================================

SID Label Prefix Last-act Lev MT TnlPref Metric IpNh SrNh

Mtu MtuPrim MtuBk D xL rL Act AdvSystemId SrErr

-------------------------------------------------------------------------------

1000 475287 10.20.1.4 AddTnl 1 0 15 0 1 1

0 0 0 0 0 0 1 0100.2000.1004 SR_ERR_OK

LDP: IP:10.20.1.4 tnlId:65546 tnlTyp:2

1001 475288 10.20.1.5 AddTnl 1 0 15 0 1 1

0 0 0 0 0 0 1 0100.2000.1005 SR_ERR_OK

LDP: IP:10.20.1.5 tnlId:65548 tnlTyp:2

1002 475289 10.20.1.6 AddTnl 1 0 15 0 1 1

0 0 0 0 0 0 1 0100.2000.1006 SR_ERR_OK

LDP: IP:10.20.1.6 tnlId:65549 tnlTyp:2

-------------------------------------------------------------------------------

D = duplicate pending

xL = exclude from LFA

rL = remote LFA

Act = tunnel active

LDP = LDP FEC is the SID NH for SR-LDP stitching

===============================================================================

adjacency

Syntax

[no] adjacency [ip-int-name | ip-address | nbr-system-id]

Context

debug>router>isis

Description

This command enables debugging for IS-IS adjacency.

The no form of the command disables debugging.

Parameters

ip-address—

When specified, only adjacencies with the specified interface address are debugged.

Values—

ipv4-address:

a.b.c.d (host bits must be 0)

ipv6-address:

x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D

ip-int-name—

When specified, only adjacencies with the specified interface name are debugged.

nbr-system-id—

When specified, only the adjacency with the specified ID is debugged.

cspf

Syntax

[no] cspf

Context

debug>router>isis

Description

This command enables debugging for IS-IS cspf.

The no form of the command disables debugging.

graceful-restart

Syntax

[no] graceful-restart

Context

debug>router>isis

Description

This command enables debugging for IS-IS graceful-restart.

The no form of the command disables debugging.

interface

Syntax

interface [ip-int-name | ip-address]

no interface

Context

debug>router>isis

Description

This command enables debugging for IS-IS interface.

The no form of the command disables debugging.

Parameters

ip-address—

When specified, only the interface with the specified interface address is debugged.

Values—

ipv4-address:

a.b.c.d (host bits must be 0)

ipv6-address:

x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D

ip-int-name—

When specified, only the interface with the specified interface name is debugged.

leak

Syntax

leak [ip-address]

no leak

Context

debug>router>isis

Description

This command enables debugging for IS-IS leaks.

The no form of the command disables debugging.

Parameters

ip-address—

When specified, only the specified address is debugged for IS-IS leaks.

Values—

ipv4-address:

a.b.c.d (host bits must be 0)

ipv6-address:

x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D

lsdb

Syntax

[no] lsdb [level-number] [system-id | lsp-id]

Context

debug>router>isis

Description

This command enables debugging for Link State DataBase (LSDB).

The no form of the command disables debugging.

Parameters

system-id—

When specified, only the specified system-id is debugged. Host name up to 38 characters.

lsp-id—

When specified, only the specified lsp-id is debugged. Hostname up to 38 characters.

level-number—

Specifies the interface level (1, 2, or 1 and 2).

misc

Syntax

[no] misc

Context

debug>router>isis

Description

This command enables debugging for IS-IS misc.

The no form of the command disables debugging.

packet

Syntax

packet [packet-type] [ip-int-name | ip-address] [detail]

Context

debug>router>isis

Description

This command enables debugging for IS-IS packets.

The no form of the command disables debugging.

Parameters

ip-address—

When specified, only packets with the specified interface address are debugged.

Values—

ipv4-address:

a.b.c.d (host bits must be 0)

ipv6-address:

x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D

ip-int-name—

When specified, only packets with the specified interface name are debugged.

packet-type—

When specified, only packets of the specified type are debugged.

Values—

detail—

All output is displayed in the detailed format.

rtm

Syntax

rtm [ip-address]

no rtm

Context

debug>router>isis

Description

This command enables debugging for IS-IS route table manager (RTM).

The no form of the command disables debugging.

Parameters

ip-address—

The specified IP address.

Values—

ipv4-address:

a.b.c.d (host bits must be 0)

ipv6-address:

x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D

spf

Syntax

[no] spf [level-number] [system-id]

Context

debug>router>isis

Description

This command enables debugging for IS-IS SFP.

The no form of the command disables debugging.

Parameters

system-id—

When specified, only the specified system-id is debugged. A 6-octet system identifier (xxxx.xxxx.xxxx).

level-number—

Specifies the interface level (1, 2, or 1 and 2).

summary

Syntax

summary [ip-address]

no summary

Context

debug>router>isis

Description

This command enables debugging for ISIS summary addresses.

The no form of the command disables the debugging.

Parameters

ip-address—

When specified, only packets with the specified address are debugged.

tunnel-endpoint

Syntax

tunnel-endpoint [tunnel-spf] [tunnel-leak ip-address]

no tunnel-endpoint

Context

debug>router>isis

Description

This command enables debugging for an ISIS tunnel endpoint.

The no form of the command disables the debugging.

Parameters

tunnel-spf—

Debugs tunnel SPF information.

ip-address—

When specified, only packets with the specified address are debugged.

4.10.2.4. Tools Commands

sr-adjacencies

Syntax

sr-adjacencies [ip-int-name | ip-address] [detail]

Context

tools>dump>router>isis

Description

This command displays ISIS SR adjacency information.

Parameters

ip-int-name—

Specifies the IP interface name. An interface name cannot be in the form of an IP address. Interface names can be any string up to 32 characters long composed of printable, 7-bit ASCII characters. If the string contains special characters (#, $, spaces, etc.), the entire string must be enclosed within double quotes.

ip-address—

Specifies the interface’s IP address.

Values—

a.b.c.d

sr-database

Syntax

sr-database [sid sid] [prefix ip-address] [nh-type {sr | bgp | rsvp}] [ipv4-unicast | ipv6-unicast] [algo algo-id] [detail]

Context

tools>dump>router>isis

Description

This command displays IS-IS SR database information.

Parameters

sid—

Displays information for the specific segment identifier.

Values—

0 to 524287

ip-address—

Specifies the IP address in dotted decimal notation.

Values—

ipv4-address:

a.b.c.d

ipv6-address:

x:x:x:x:x:x:x:x [eight 16-bit pieces]
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D

sr—

Displays information for SR next-hop route.

bgp—

Displays information for BGP next-hop route.

rsvp—

Displays information for RSVP next-hop route.

ipv4-unicast—

Displays IPv4 unicast parameters.

ipv6-unicast—

Displays IPv6 unicast parameters.

algo algo-id—

Filters information based on the specific algorithm only.

Values—

0 to 255

detail—

Displays detailed IS-IS SR database information.

Output

The following outputs are examples of IS-IS SR database information, and Table 59 describes the output fields.

Sample Output

*A:Dut-E# tools dump router isis sr-database

===============================================================================

Rtr Base ISIS Instance 0 SR Database

===============================================================================

SID Label Prefix Last-act Lev MT RtmPref TtmPref Metric IpNh SrNh

Mtu MtuPrim MtuBk D xL LT Act AdvSystemId SrErr

-------------------------------------------------------------------------------

0 60000 1.0.33.3 LfaNhops 1 0 15 11 100 1 1

1484 1500 1500 0 0 T +R 0100.2000.1003 SR_ERR_OK

1 60001 1.0.44.4 LfaNhops 1 0 15 11 200 1 1

1484 1500 1500 0 0 Tn +R 0100.2000.1004 SR_ERR_OK

2 60002 1.0.55.5 Local - - - - - - -

- - - 0 - - +R 0100.2000.1005 SR_ERR_OK

3 60003 1.0.66.6 LfaNhops 1 0 15 11 100 1 1

1484 1500 1500 0 0 T +R 0100.2000.1006 SR_ERR_OK

4 60004 1.0.11.1 LfaNhops 1 0 15 11 200 1 1

1484 1500 1500 0 0 Tn +R 0100.2000.1001 SR_ERR_OK

5 60005 1.0.22.2 LfaNhops 1 0 15 11 300 1 1

1484 1500 1500 0 0 Tn +R 0100.2000.1002 SR_ERR_OK

6 60006 10.20.1.3 LfaNhops 1 0 15 11 100 1 1

1484 1500 1500 0 0 T +R 0100.2000.1003 SR_ERR_OK

7 60007 10.20.1.4 LfaNhops 1 0 15 11 200 1 1

1484 1500 1500 0 0 Tn +R 0100.2000.1004 SR_ERR_OK

8 60008 10.20.1.5 Local - - - - - - -

- - - 0 - - +R 0100.2000.1005 SR_ERR_OK

9 60009 10.20.1.6 LfaNhops 1 0 15 11 100 1 1

1484 1500 1500 0 0 T +R 0100.2000.1006 SR_ERR_OK

10 60010 10.20.1.1 LfaNhops 1 0 15 11 200 1 1

1484 1500 1500 0 0 Tn +R 0100.2000.1001 SR_ERR_OK

11 60011 10.20.1.2 LfaNhops 1 0 15 11 300 1 1

1484 1500 1500 0 0 Tn +R 0100.2000.1002 SR_ERR_OK

-------------------------------------------------------------------------------

No. of Entries: 12

-------------------------------------------------------------------------------

Lev = route level

IpNh = number of IP next-hops

SrNh = number of SR-tunnel next-hops

D = duplicate pending

xL = exclude from LFA

LT = LFA type (L:LFA, R:RLFA, T:TILFA, n:nodeProtection)

Act = tunnel active state (R:reported, F:failed, +:SR-ack)

===============================================================================

Sample Output

*A:Dut-C# tools dump router isis sr-database detail

===============================================================================

Rtr Base ISIS Instance 0 SR Database

Legend:

label stack is ordered from bottom-most to top-most

===============================================================================

-------------------------------------------------------------------------------

SID 601

-------------------------------------------------------------------------------

Label : 20601 Adv System Id : 0010.0100.1001

Prefix : 1.1.1.1

Route Level : 1 MT Id : 0

Rtm Preference : 15 Ttm Preference : 11

Metric : 10 Last Action : TnlChange

Num Ip NextHop : 1 Num SR-Tnl NextHop : 1

Mtu : 1560

Mtu Prim : 1564 Mtu Backup : -

Exclude from LFA : 0 LFA Type : -

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

NHOP: IP IsTunl GIfId/ IfId/ PgId IsAdv Label IsLfaX

TunlType LspId

-------------------------------------------------------------------------------

1.1.3.1 N 4 2 19 1 20601 0

-------------------------------------------------------------------------------

SID 602

-------------------------------------------------------------------------------

Label : 20602 Adv System Id : 0010.0100.1002

Prefix : 1.1.1.2

Route Level : 2 MT Id : 0

Rtm Preference : 18 Ttm Preference : 11

Metric : 10 Last Action : AddTnl

Num Ip NextHop : 1 Num SR-Tnl NextHop : 1

Mtu : 1560

Mtu Prim : 1564 Mtu Backup : -

Exclude from LFA : 0 LFA Type : -

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

NHOP: IP IsTunl GIfId/ IfId/ PgId IsAdv Label IsLfaX

TunlType LspId

-------------------------------------------------------------------------------

1.2.3.2 N 5 3 15 1 20602 0

-------------------------------------------------------------------------------

SID 603

-------------------------------------------------------------------------------

Label : 20603 Adv System Id : 0010.0100.1003

Prefix : 1.1.1.3 Type : Local

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

-------------------------------------------------------------------------------

SID 604

-------------------------------------------------------------------------------

Label : 20604 Adv System Id : 0010.0100.1004

Prefix : 1.1.1.4

Route Level : 2 MT Id : 0

Rtm Preference : 18 Ttm Preference : 11

Metric : 20 Last Action : AddTnl

Num Ip NextHop : 1 Num SR-Tnl NextHop : 1

Mtu : 1560

Mtu Prim : 1564 Mtu Backup : -

Exclude from LFA : 0 LFA Type : -

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

NHOP: IP IsTunl GIfId/ IfId/ PgId IsAdv Label IsLfaX

TunlType LspId

-------------------------------------------------------------------------------

1.2.3.2 N 5 3 15 0 20604 0

-------------------------------------------------------------------------------

SID 605

-------------------------------------------------------------------------------

Label : 20605 Adv System Id : 0010.0100.1005

Prefix : 1.1.1.5

Route Level : 2 MT Id : 0

Rtm Preference : 18 Ttm Preference : 11

Metric : 10 Last Action : AddTnl

Num Ip NextHop : 1 Num SR-Tnl NextHop : 1

Mtu : 1560

Mtu Prim : 1564 Mtu Backup : -

Exclude from LFA : 0 LFA Type : -

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

NHOP: IP IsTunl GIfId/ IfId/ PgId IsAdv Label IsLfaX

TunlType LspId

-------------------------------------------------------------------------------

1.3.5.5 N 6 4 17 1 20605 0

-------------------------------------------------------------------------------

SID 606

-------------------------------------------------------------------------------

Label : 20606 Adv System Id : 0010.0100.1006

Prefix : 1.1.1.6

Route Level : 2 MT Id : 0

Rtm Preference : 18 Ttm Preference : 11

Metric : 20 Last Action : AddTnl

Num Ip NextHop : 1 Num SR-Tnl NextHop : 1

Mtu : 1560

Mtu Prim : 1564 Mtu Backup : -

Exclude from LFA : 0 LFA Type : -

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

NHOP: IP IsTunl GIfId/ IfId/ PgId IsAdv Label IsLfaX

TunlType LspId

-------------------------------------------------------------------------------

1.3.5.5 N 6 4 17 0 20606 0

-------------------------------------------------------------------------------

SID 611 Algorithm 128

-------------------------------------------------------------------------------

Label : 20611 Adv System Id : 0010.0100.1001

Prefix : 1.1.1.1

Route Level : 1 MT Id : 0

Rtm Preference : 15 Ttm Preference : 11

Metric : 10 Last Action : TnlChange

Num Ip NextHop : 1 Num SR-Tnl NextHop : 1

Mtu : 1560

Mtu Prim : 1564 Mtu Backup : -

Exclude from LFA : 0 LFA Type : -

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

NHOP: IP IsTunl GIfId/ IfId/ PgId IsAdv Label IsLfaX

TunlType LspId

-------------------------------------------------------------------------------

1.1.3.1 N 4 2 19 1 20611 0

-------------------------------------------------------------------------------

SID 613

-------------------------------------------------------------------------------

Label : 20613 Adv System Id : 0010.0100.1003

Prefix : 1.1.1.3 Type : Local

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

-------------------------------------------------------------------------------

SID 614 Algorithm 128

-------------------------------------------------------------------------------

Label : 20614 Adv System Id : 0010.0100.1004

Prefix : 1.1.1.4

Route Level : 2 MT Id : 0

Rtm Preference : 18 Ttm Preference : 11

Metric : 20 Last Action : AddTnl

Num Ip NextHop : 1 Num SR-Tnl NextHop : 1

Mtu : 1560

Mtu Prim : 1564 Mtu Backup : -

Exclude from LFA : 0 LFA Type : -

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

NHOP: IP IsTunl GIfId/ IfId/ PgId IsAdv Label IsLfaX

TunlType LspId

-------------------------------------------------------------------------------

1.2.3.2 N 5 3 15 0 20614 0

-------------------------------------------------------------------------------

SID 615 Algorithm 128

-------------------------------------------------------------------------------

Label : 20615 Adv System Id : 0010.0100.1005

Prefix : 1.1.1.5

Route Level : 2 MT Id : 0

Rtm Preference : 18 Ttm Preference : 11

Metric : 10 Last Action : AddTnl

Num Ip NextHop : 1 Num SR-Tnl NextHop : 1

Mtu : 1560

Mtu Prim : 1564 Mtu Backup : -

Exclude from LFA : 0 LFA Type : -

Duplicate Pending : 0 Tunnel Active State : Reported/Ack

SR Error : SR_ERR_OK

NHOP: IP IsTunl GIfId/ IfId/ PgId IsAdv Label IsLfaX

TunlType LspId

-------------------------------------------------------------------------------

1.3.5.5 N 6 4 17 1 20615 0

Table 59: IS-IS SR Database Output Fields

Label	Description
Label	The ILM MPLS label corresponding to the SID
Prefix	The route prefix and mask
Metric	Interface metric for Level 1 and Level 2; if none are set to 0