Mpls-Te Features - Details - Cisco NCS 5500 Series Configuration Manual

Implementing MPLS Traffic Engineering
RP/0/RP0/CPU0:router(config)# interface GigabitEthernet0/0/0/1
/* Applying service-policy to ingress interface */
RP/0/RP0/CPU0:router(config-if)#
RP/0/RP0/CPU0:router(config-if)# ipv4 address 10.1.1.1 255.255.255.0
RP/0/RP0/CPU0:router(config-if)# exit
/* Creating TE-tunnels to carry traffic based on priority */
RP/0/RP0/CPU0:router(config)#
RP/0/RP0/CPU0:router(config-if)# ipv4 unnumbered Loopback0
RP/0/RP0/CPU0:router(config-if)# signalled-bandwidth 1000
RP/0/RP0/CPU0:router(config-if)# autoroute announce
RP/0/RP0/CPU0:router(config-if)# destination 10.20.20.1
RP/0/RP0/CPU0:router(config-if)# record route
/* Associating egress TE tunnels to forward class */
RP/0/RP0/CPU0:router(config-if)#
RP/0/RP0/CPU0:router(config-if)# path-option 1 explicit identifier 61
RP/0/RP0/CPU0:router(config-if)# exit
Verification
Use show mpls forwarding tunnels command to verify the PBTS configuration:
RP/0/RP0/CPU0:ios#
Tue May 16 01:18:19.681 UTC
Tunnel
Name
------------- ----------- ------------ --------------- ------------
tt10
Interface:

MPLS-TE Features - Details

MPLS TE Fast Reroute Link and Node Protection
Fast Reroute (FRR) is a mechanism for protecting MPLS TE LSPs from link and node failures by locally
repairing the LSPs at the point of failure, allowing data to continue to flow on them while their headend routers
try to establish new end-to-end LSPs to replace them. FRR locally repairs the protected LSPs by rerouting
them over backup tunnels that bypass failed links or node.
Backup tunnels that bypass only a single link of the LSP's path provide link protection. They protect LSPs if
a link along their path fails by rerouting the LSP's traffic to the next hop (bypassing the failed link). These
tunnels are referred to as next-hop (NHOP) backup tunnels because they terminate at the LSP's next hop
beyond the point of failure.
show mpls forwarding tunnels
Outgoing Outgoing
Label Interface
Exp-Null-v4 Te0/0/0/16
Updated: May 11 19:31:54.716
Version: 483, Priority: 2
Label Stack (Top -> Bottom): { 0 }
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 14/18, MTU: 1500
Packets Switched: 0
Name: tunnel-te10 (ifhandle 0x0800005c)
Local Label: 64016, Forwarding Class: 1, Weight: 0
Packets/Bytes Switched: 0/0
MPLS Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.2.x
service-policy input INGRESS-POLICY
interface tunnel-te61
forward-class 1
10 detail
Next Hop
20.20.17.21
MPLS-TE Features - Details
Bytes
Switched
0
51