This section provides information about configuring and operating RSVP-TE LSP with PCEP using CLI.
The following 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 NRC-P using BGP-LS.
The LSP uses an admin-group constraint to keep the paths of the secondary and primary link disjoint in the backbone area. The LSP is PCE-controlled but also has path-computation-method pce enabled so the initial path, and any MBB path, is also computed by PCE.
The NSP and SR OS load versions used to produce this example are:
NSP: NSP-2.0.3-rel.108
PCE SR OS: TiMOS-B-0.0.W129
PCC: TiMOS-B-0.0.I4902
Figure 1 shows a multi-level IS-IS topology in the NSP GUI:
Figure 1. 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.
*A:PCE Server 226>config>router>pcep>pce# info
----------------------------------------------
local-address 192.168.48.226
no shutdown
----------------------------------------------
*A:Reno 194>config>router>pcep>pcc# info
----------------------------------------------
peer 192.168.48.226
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 : 192.168.48.226
PCE Overloaded : false
-------------------------------------------------------------------------------
PCEP Path Computation Element (PCE) Peer Info
-------------------------------------------------------------------------------
Peer Sync State Oper Keepalive/Oper DeadTimer
-------------------------------------------------------------------------------
192.168.48.190:4189 done 30/120
192.168.48.194:4189 done 30/120
192.168.48.198:4189 done 30/120
192.168.48.199:4189 done 30/120
192.168.48.219:4189 done 30/120
192.168.48.221:4189 done 30/120
192.168.48.224:4189 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 : 192.168.48.194
Report Path Constraints: True
-----------------------------------------------------------------------
PCEP Path Computation Client (PCC) Peer Info
-----------------------------------------------------------------------
Peer Admin State/Oper State Oper Keepalive/Oper DeadTimer
-----------------------------------------------------------------------
192.168.48.226 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 : 192.168.48.194
LSP Name : From Reno to Atlanta RSVP-TE::primary_empty
Source Address : 192.168.48.194 Destination Address : 192.168.48.224
LSP Delegated : True Delegate PCE Address: 192.168.48.226
Oper Status : active
-----------------------------------------------------------------------
PCEP-specific LSP ID: 12
LSP ID : 14380 LSP Type : rsvp-p2p
Tunnel ID : 1 Extended Tunnel Id : 192.168.48.194
LSP Name : From Reno to Atlanta RSVP-TE::secondary_empty
Source Address : 192.168.48.194 Destination Address : 192.168.48.224
LSP Delegated : True Delegate PCE Address: 192.168.48.226
Oper Status : up
=======================================================================
The following examples shows the configuration and show command output of BGP on the PCE node and the ABR node-to-learn topology using the BGP-LS NLRI family.
*A:PCE Server 226>config>router>bgp# info
----------------------------------------------
family bgp-ls
min-route-advertisement 1
link-state-export-enable
group "IBGP_L2"
family bgp-ls
peer-as 65000
neighbor 192.168.48.198
exit
neighbor 192.168.48.199
exit
neighbor 192.168.48.221
exit
exit
no shutdown
----------------------------------------------
*A:Chicago 221>config>router>bgp# info
----------------------------------------------
min-route-advertisement 1
advertise-inactive
link-state-import-enable
group "IBGP_L2"
family bgp-ls
peer-as 65000
neighbor 192.168.48.226
exit
exit
no shutdown
----------------------------------------------
*A:PCE Server 226# show router bgp summary
===============================================================================
BGP Router ID:192.168.48.226 AS:65000 Local AS:65000
===============================================================================
BGP Admin State : Up BGP Oper State : Up
Total Peer Groups : 1 Total Peers : 3
Total BGP Paths : 182 Total Path Memory : 44896
Total IPv4 Remote Rts : 0 Total IPv4 Rem. Active Rts : 0
Total McIPv4 Remote Rts : 0 Total McIPv4 Rem. Active Rts: 0
Total McIPv6 Remote Rts : 0 Total McIPv6 Rem. Active Rts: 0
Total IPv6 Remote Rts : 0 Total IPv6 Rem. Active Rts : 0
Total IPv4 Backup Rts : 0 Total IPv6 Backup Rts : 0
Total Supressed Rts : 0 Total Hist. Rts : 0
Total Decay Rts : 0
Total VPN Peer Groups : 0 Total VPN Peers : 0
Total VPN Local Rts : 0
Total VPN-IPv4 Rem. Rts : 0 Total VPN-IPv4 Rem. Act. Rts: 0
Total VPN-IPv6 Rem. Rts : 0 Total VPN-IPv6 Rem. Act. Rts: 0
Total VPN-IPv4 Bkup Rts : 0 Total VPN-IPv6 Bkup Rts : 0
Total VPN Supp. Rts : 0 Total VPN Hist. Rts : 0
Total VPN Decay Rts : 0
Total L2-VPN Rem. Rts : 0 Total L2VPN Rem. Act. Rts : 0
Total MVPN-IPv4 Rem Rts : 0 Total MVPN-IPv4 Rem Act Rts : 0
Total MDT-SAFI Rem Rts : 0 Total MDT-SAFI Rem Act Rts : 0
Total MSPW Rem Rts : 0 Total MSPW Rem Act Rts : 0
Total RouteTgt Rem Rts : 0 Total RouteTgt Rem Act Rts : 0
Total McVpnIPv4 Rem Rts : 0 Total McVpnIPv4 Rem Act Rts : 0
Total McVpnIPv6 Rem Rts : 0 Total McVpnIPv6 Rem Act Rts : 0
Total MVPN-IPv6 Rem Rts : 0 Total MVPN-IPv6 Rem Act Rts : 0
Total EVPN Rem Rts : 0 Total EVPN Rem Act Rts : 0
Total FlowIpv4 Rem Rts : 0 Total FlowIpv4 Rem Act Rts : 0
Total FlowIpv6 Rem Rts : 0 Total FlowIpv6 Rem Act Rts : 0
Total LblIpv4 Rem Rts : 0 Total LblIpv4 Rem. Act Rts : 0
Total LblIpv6 Rem Rts : 0 Total LblIpv6 Rem. Act Rts : 0
Total LblIpv4 Bkp Rts : 0 Total LblIpv6 Bkp Rts : 0
Total Link State Rem Rts: 271 Total Link State Rem. Act Rts: 0
===============================================================================
BGP Summary
===============================================================================
Legend : D - Dynamic Neighbor
===============================================================================
Neighbor
Description
AS PktRcvd InQ Up/Down State|Rcv/Act/Sent (Addr Family)
PktSent OutQ
-------------------------------------------------------------------------------
192.168.48.198
65000 0 0 02h42m56s Active
0 0
192.168.48.199
65000 503 0 02h42m56s 76/0/0 (LinkState)
328 0
192.168.48.221
65000 519 0 02h42m56s 195/0/0 (LinkState)
328 0
-------------------------------------------------------------------------------
*A:PCE Server 226# show router bgp routes bgp-ls hunt link
===============================================================================
BGP Router ID:192.168.48.226 AS:65000 Local AS:65000
===============================================================================
Legend -
Status codes : u - used, s - suppressed, h - history, d - decayed, * - valid
l - leaked, x - stale, > - best, b - backup, p - purge
Origin codes : i - IGP, e - EGP, ? - incomplete
===============================================================================
BGP-LS Link NLRIs
===============================================================================
-------------------------------------------------------------------------------
RIB In Entries
-------------------------------------------------------------------------------
Network:
Type : LINK-NLRI
Protocol : ISIS Level-2 Identifier : 0xa
Local Node descriptor:
Autonomous System : 0.0.253.232
Link State Id : 10
IGP Router Id : 0x38120048184
Remote Node descriptor:
Autonomous System : 0.0.253.232
Link State Id : 10
IGP Router Id : 0x38120048223
Link descriptor:
IPV4 Interface Addr: 10.0.14.184
IPV4 Neighbor Addr : 10.0.14.223
Nexthop : 192.168.48.199
From : 192.168.48.199
Res. Nexthop : 0.0.0.0
Local Pref. : 100 Interface Name : NotAvailable
Aggregator AS : None Aggregator : None
Atomic Aggr. : Not Atomic MED : None
AIGP Metric : None
Connector : None
Community : No Community Members
Cluster : No Cluster Members
Originator Id : None Peer Router Id : 192.168.48.199
Flags : Valid Best IGP
Route Source : Internal
AS-Path : No As-Path
Route Tag : 0
Neighbor-AS : N/A
Orig Validation: N/A
Source Class : 0 Dest Class : 0
Add Paths Send : Default
Last Modified : 02h27m50s
-------------------------------------------------------------------------------
Link State Attribute TLVs :
Administrative group (color) : 0x0
Maximum link bandwidth : 100000 Kbps
Max. reservable link bandwidth : 100000 Kbps
Unreserved bandwidth0 : 100000 Kbps
Unreserved bandwidth1 : 100000 Kbps
Unreserved bandwidth2 : 100000 Kbps
Unreserved bandwidth3 : 100000 Kbps
Unreserved bandwidth4 : 100000 Kbps
Unreserved bandwidth5 : 100000 Kbps
Unreserved bandwidth6 : 100000 Kbps
Unreserved bandwidth7 : 100000 Kbps
TE Default Metric : 100
IGP Metric : 100
Adjacency Segment Identifier (Adj-SID) : flags 0x30 weight 0 sid 262136
-------------------------------------------------------------------------------
Network:
Type : LINK-NLRI
Protocol : ISIS Level-2 Identifier : 0xa
Local Node descriptor:
Autonomous System : 0.0.253.232
Link State Id : 10
IGP Router Id : 0x38120048184
Remote Node descriptor:
Autonomous System : 0.0.253.232
Link State Id : 10
IGP Router Id : 0x38120048223
Link descriptor:
IPV4 Interface Addr: 10.0.14.184
IPV4 Neighbor Addr : 10.0.14.223
Nexthop : 192.168.48.221
From : 192.168.48.221
Res. Nexthop : 0.0.0.0
Local Pref. : 100 Interface Name : NotAvailable
Aggregator AS : None Aggregator : None
Atomic Aggr. : Not Atomic MED : None
AIGP Metric : None
Connector : None
Community : No Community Members
Cluster : No Cluster Members
Originator Id : None Peer Router Id : 192.168.48.221
Flags : Valid IGP
TieBreakReason : OriginatorID
Route Source : Internal
AS-Path : No As-Path
Route Tag : 0
Neighbor-AS : N/A
Orig Validation: N/A
Source Class : 0 Dest Class : 0
Add Paths Send : Default
Last Modified : 02h27m54s
-------------------------------------------------------------------------------
Link State Attribute TLVs :
Administrative group (color) : 0x0
Maximum link bandwidth : 100000 Kbps
Max. reservable link bandwidth : 100000 Kbps
Unreserved bandwidth0 : 100000 Kbps
Unreserved bandwidth1 : 100000 Kbps
Unreserved bandwidth2 : 100000 Kbps
Unreserved bandwidth3 : 100000 Kbps
Unreserved bandwidth4 : 100000 Kbps
Unreserved bandwidth5 : 100000 Kbps
Unreserved bandwidth6 : 100000 Kbps
Unreserved bandwidth7 : 100000 Kbps
TE Default Metric : 100
IGP Metric : 100
Adjacency Segment Identifier (Adj-SID) : flags 0x30 weight 0 sid 262136
-------------------------------------------------------------------------------
Figure 2 shows primary and secondary RSVP-TE LSP paths in the NSP GUI.
Figure 2. 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 192.168.48.224
egress-statistics
shutdown
exit
fast-reroute facility
no node-protect
exit
path-computation-method pce
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 : 192.168.48.194 To : 192.168.48.224
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 (192.168.48.194) @ Record Label : N/A
-> 10.202.5.199 (192.168.48.199) @ Record Label : 262094
-> 192.168.48.185 (192.168.48.185) Record Label : 262111
-> 10.0.5.185 Record Label : 262111
-> 192.168.48.223 (192.168.48.223) Record Label : 262121
-> 10.0.7.223 Record Label : 262121
-> 192.168.48.224 (192.168.48.224) 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 : 192.168.48.194 To : 192.168.48.224
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 (192.168.48.194) Record Label : N/A
-> 10.202.5.199 (192.168.48.199) Record Label : 262091
-> 10.0.9.198 (192.168.48.198) Record Label : 262096
-> 192.168.48.184 (192.168.48.184) Record Label : 262102
-> 10.0.2.184 Record Label : 262102
-> 192.168.48.221 (192.168.48.221) Record Label : 262119
-> 10.0.4.221 Record Label : 262119
-> 192.168.48.223 (192.168.48.223) Record Label : 262088
-> 10.0.10.223 Record Label : 262088
-> 192.168.48.224 (192.168.48.224) 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
===============================================================================