4.7. Configuring RSVP-TE LSPs with PCEP Using the CLI

This section provides information about using the CLI to configure and operate RSVP-TE LSPs with PCEP.

The following information describes the detailed configuration of an inter-area RSVP-TE LSP with both a primary path and a secondary path. The network uses IS-IS with the backbone area in Level 2 and the leaf areas in Level 1. Topology discovery is learned by the NRC-P using IGP and the NFM-P.

The LSP uses an admin-group constraint to keep the paths of the secondary and primary links disjoint in the backbone area. The LSP is PCE-controlled but also has pce-computation enabled so that the initial path, and any MBB path, is also computed by the PCE.

The NSP and 7705 SAR load versions used to produce this example in this section are:

NSP: NSP-2.0.3-rel.108
PCE SROS: TiMOS-B-0.0.W129
PCC: TiMOS-B-0.0.I4902

This section provides configuration and show commands for the following examples:

PCEP on the PCE Node and the PCC Node
MPLS on the PCC Node

4.7.1. PCEP on the PCE Node and the PCC Node

Figure 17 shows a multi-level IS-IS topology in the NSP GUI:

Figure 17: Multi-level IS-IS Topology in the NSP GUI

The following example shows the configuration and show command output of the PCEP on the PCE node and the PCC node.

Note:

The 7705 SAR operates as a PCE Client (PCC) only, supporting PCC capabilities for RSVP-TE LSPs. References to PCE router operation and SR-TE LSPs apply to the 7750 SR product family and are included here for informational purposes only.

*A:PCE Server 226>config>router>pcep>pce# info

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

local-address 138.120.48.226

no shutdown

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

*A:Reno 194>config>router>pcep>pcc# info

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

peer 138.120.48.226

no shutdown

exit

no shutdown

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

*A:PCE Server 226>config>router>pcep>pce# show router pcep pce status

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

Path Computation Element Protocol (PCEP) Path Computation Element (PCE) Info

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

Admin Status : Up Oper Status : Up

Unknown Msg Limit : 10 msg/min

Keepalive Interval : 30 seconds DeadTimer Interval : 120 seconds

Capabilities List : stateful-delegate stateful-pce segment-rt-path

Local Address : 138.120.48.226

PCE Overloaded : false

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

PCEP Path Computation Element (PCE) Peer Info

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

Peer Sync State Oper Keepalive/Oper DeadTimer

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

138.120.48.190:4189 done 30/120

138.120.48.194:4189 done 30/120

138.120.48.198:4189 done 30/120

138.120.48.199:4189 done 30/120

138.120.48.219:4189 done 30/120

138.120.48.221:4189 done 30/120

138.120.48.224:4189 done 30/120

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

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

*A:Reno 194# show router pcep pcc status

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

Path Computation Element Protocol (PCEP) Path Computation Client (PCC) Info

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

Admin Status : Up Oper Status : Up

Unknown Msg Limit : 10 msg/min

Keepalive Interval : 30 seconds DeadTimer Interval : 120 seconds

Capabilities List : stateful-delegate stateful-pce segment-rt-path

Address : 138.120.48.194

Report Path Constraints: True

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

PCEP Path Computation Client (PCC) Peer Info

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

Peer Admin State/Oper State Oper Keepalive/Oper DeadTimer

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

138.120.48.226 Up/Up 30/120

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

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

*A:Reno 194# show router pcep pcc lsp-db

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

PCEP Path Computation Client (PCC) LSP Update Info

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

PCEP-specific LSP ID: 11

LSP ID : 14378 LSP Type : rsvp-p2p

Tunnel ID : 1 Extended Tunnel Id : 38.120.48.194

LSP Name : From Reno to Atlanta RSVP-TE::primary_empty

Source Address : 38.120.48.194 Destination Address : 38.120.48.224

LSP Delegated : True Delegate PCE Address: 138.120.48.226

Oper Status : active

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

PCEP-specific LSP ID: 12

LSP ID : 14380 LSP Type : rsvp-p2p

Tunnel ID : 1 Extended Tunnel Id : 38.120.48.194

LSP Name : From Reno to Atlanta RSVP-TE::secondary_empty

Source Address : 38.120.48.194 Destination Address : 38.120.48.224

LSP Delegated : True Delegate PCE Address: 138.120.48.226

Oper Status : up

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

4.7.2. MPLS on the PCC Node

Figure 18 shows primary and secondary RSVP-TE LSP paths in the NSP GUI.

Figure 18: Primary and Secondary RSVP-TE LSP Paths in the NSP GUI

The following example shows the configuration and show command output of the MPLS on the PCC node.

*A:Reno 194>config>router>mpls>lsp# info

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

to 38.120.48.224

egress-statistics

shutdown

exit

cspf

fast-reroute facility

no node-protect

exit

pce-computation

pce-report enable

pce-control

revert-timer 1

primary "primary_empty"

exclude "top"

bandwidth 10

exit

secondary "secondary_empty"

standby

exclude "bottom"

bandwidth 5

exit

no shutdown

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

*A:Reno 194# show router mpls lsp "From Reno to Atlanta RSVP-TE" path detail

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

MPLS LSP From Reno to Atlanta RSVP-TE Path (Detail)

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

Legend :

@ - Detour Available # - Detour In Use

b - Bandwidth Protected n - Node Protected

s - Soft Preemption

S - Strict L - Loose

A - ABR

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

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

LSP From Reno to Atlanta RSVP-TE Path primary_empty

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

LSP Name : From Reno to Atlanta RSVP-TE

Path LSP ID : 14382

From : 38.120.48.194 To : 38.120.48.224

Admin State : Up Oper State : Up

Path Name : primary_empty Path Type : Primary

Path Admin : Up Path Oper : Up

Out Interface : 1/1/1 Out Label : 262094

Path Up Time : 0d 00:00:22 Path Down Time : 0d 00:00:00

Retry Limit : 0 Retry Timer : 30 sec

Retry Attempt : 0 Next Retry In : 0 sec

BFD Template : None BFD Ping Interval : 60

BFD Enable : False

Adspec : Disabled Oper Adspec : Disabled

CSPF : Enabled Oper CSPF : Enabled

Least Fill : Disabled Oper LeastFill : Disabled

FRR : Enabled Oper FRR : Enabled

FRR NodeProtect : Disabled Oper FRR NP : Disabled

FR Hop Limit : 16 Oper FRHopLimit : 16

FR Prop Admin Gr*: Disabled Oper FRPropAdmGrp : Disabled

Propogate Adm Grp: Disabled Oper Prop Adm Grp : Disabled

Inter-area : False

PCE Updt ID : 0

PCE Report : Enabled Oper PCE Report : Enabled

PCE Control : Enabled Oper PCE Control : Enabled

PCE Compute : Enabled

Neg MTU : 1496 Oper MTU : 1496

Bandwidth : 10 Mbps Oper Bandwidth : 10 Mbps

Hop Limit : 255 Oper HopLimit : 255

Record Route : Record Oper Record Route : Record

Record Label : Record Oper Record Label : Record

Setup Priority : 7 Oper Setup Priority : 7

Hold Priority : 0 Oper Hold Priority : 0

Class Type : 0 Oper CT : 0

Backup CT : None

MainCT Retry : n/a

Rem :

MainCT Retry : 0

Limit :

Include Groups : Oper Include Groups :

None None

Exclude Groups : Oper Exclude Groups :

top top

Adaptive : Enabled Oper Metric : 40

Preference : n/a

Path Trans : 7 CSPF Queries : 7172

Failure Code : noError

Failure Node : n/a

Explicit Hops :

No Hops Specified

Actual Hops :

10.202.5.194 (38.120.48.194) @ Record Label : N/A

-> 10.202.5.199 (38.120.48.199) @ Record Label : 262094

-> 38.120.48.185 (38.120.48.185) Record Label : 262111

-> 10.0.5.185 Record Label : 262111

-> 38.120.48.223 (38.120.48.223) Record Label : 262121

-> 10.0.7.223 Record Label : 262121

-> 38.120.48.224 (38.120.48.224) Record Label : 262116

-> 10.101.4.224 Record Label : 262116

Computed Hops :

10.202.5.199(S)

-> 10.0.5.185(S)

-> 10.0.7.223(S)

-> 10.101.4.224(S)

Resignal Eligible: False

Last Resignal : n/a CSPF Metric : 40

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

LSP From Reno to Atlanta RSVP-TE Path secondary_empty

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

LSP Name : From Reno to Atlanta RSVP-TE

Path LSP ID : 14384

From : 38.120.48.194 To : 38.120.48.224

Admin State : Up Oper State : Up

Path Name : secondary_empty Path Type : Standby

Path Admin : Up Path Oper : Up

Out Interface : 1/1/1 Out Label : 262091

Path Up Time : 0d 00:00:25 Path Down Time : 0d 00:00:00

Retry Limit : 0 Retry Timer : 30 sec

Retry Attempt : 0 Next Retry In : 0 sec

BFD Template : None BFD Ping Interval : 60

BFD Enable : False

Adspec : Disabled Oper Adspec : Disabled

CSPF : Enabled Oper CSPF : Enabled

Least Fill : Disabled Oper LeastFill : Disabled

Propogate Adm Grp: Disabled Oper Prop Adm Grp : Disabled

Inter-area : False

PCE Updt ID : 0

PCE Report : Enabled Oper PCE Report : Enabled

PCE Control : Enabled Oper PCE Control : Enabled

PCE Compute : Enabled

Neg MTU : 1496 Oper MTU : 1496

Bandwidth : 5 Mbps Oper Bandwidth : 5 Mbps

Hop Limit : 255 Oper HopLimit : 255

Record Route : Record Oper Record Route : Record

Record Label : Record Oper Record Label : Record

Setup Priority : 7 Oper Setup Priority : 7

Hold Priority : 0 Oper Hold Priority : 0

Class Type : 0 Oper CT : 0

Include Groups : Oper Include Groups :

None None

Exclude Groups : Oper Exclude Groups :

bottom bottom

Adaptive : Enabled Oper Metric : 60

Preference : 255

Path Trans : 28 CSPF Queries : 10

Failure Code : noError

Failure Node : n/a

Explicit Hops :

No Hops Specified

Actual Hops :

10.202.5.194 (38.120.48.194) Record Label : N/A

-> 10.202.5.199 (38.120.48.199) Record Label : 262091

-> 10.0.9.198 (38.120.48.198) Record Label : 262096

-> 38.120.48.184 (38.120.48.184) Record Label : 262102

-> 10.0.2.184 Record Label : 262102

-> 38.120.48.221 (38.120.48.221) Record Label : 262119

-> 10.0.4.221 Record Label : 262119

-> 38.120.48.223 (38.120.48.223) Record Label : 262088

-> 10.0.10.223 Record Label : 262088

-> 38.120.48.224 (38.120.48.224) Record Label : 262115

-> 10.101.4.224 Record Label : 262115

Computed Hops :

10.202.5.199(S)

-> 10.0.9.198(S)

-> 10.0.2.184(S)

-> 10.0.4.221(S)

-> 10.0.10.223(S)

-> 10.101.4.224(S)

Srlg : Disabled

Srlg Disjoint : False

Resignal Eligible: False

Last Resignal : n/a CSPF Metric : 60

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