Cisco CRS Configuration Manual page 103
Ios xr mpls configuration guide
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Also See for CRS:
- User manual (304 pages) ,
- Configuration manual (292 pages) ,
- Command reference manual (155 pages)
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Implementing MPLS Label Distribution Protocol
This example shows how to configure TE tunnel as LFA backup:
router isis TEST
net 49.0001.0000.0000.0001.00
address-family ipv4 unicast
metric-style wide
interface GigabitEthernet0/6/0/13
point-to-point
address-family ipv4 unicast
fast-reroute per-prefix
# primary path GigabitEthernet0/6/0/13 will exclude the interface
# GigabitEthernet0/6/0/33 in LFA backup path computation. TE tunnel 1001
# is using the link GigabitEthernet0/6/0/33.
fast-reroute per-prefix exclude interface GigabitEthernet0/6/0/33
fast-reroute per-prefix lfa-candidate interface tunnel-te1001
!
interface GigabitEthernet0/6/0/33
point-to-point
address-family ipv4 unicast
!
This example shows how to configure LFA FRR with configurable tie-break configuration:
router isis TEST
net 49.0001.0000.0000.0001.00
address-family ipv4 unicast
metric-style wide
fast-reroute per-prefix tiebreaker ?
downstream
lc-disjoint
lowest-backup-metric
node-protecting
primary-path
secondary-path
fast-reroute per-prefix tiebreaker lc-disjoint index ?
<1-255>
fast-reroute per-prefix tiebreaker lc-disjoint index 10
Sample configuration:
router isis TEST
net 49.0001.0000.0000.0001.00
address-family ipv4 unicast
metric-style wide
fast-reroute per-prefix tiebreaker downstream index 60
fast-reroute per-prefix tiebreaker lc-disjoint index 10
fast-reroute per-prefix tiebreaker lowest-backup-metric index 40
fast-reroute per-prefix tiebreaker node-protecting index 30
fast-reroute per-prefix tiebreaker primary-path index 20
fast-reroute per-prefix tiebreaker secondary-path index 50
!
interface GigabitEthernet0/6/0/13
point-to-point
address-family ipv4 unicast
fast-reroute per-prefix
!
interface GigabitEthernet0/1/0/13
point-to-point
address-family ipv4 unicast
fast-reroute per-prefix
!
interface GigabitEthernet0/3/0/0.1
point-to-point
address-family ipv4 unicast
!
interface GigabitEthernet0/3/0/0.2
point-to-point
address-family ipv4 unicast
Prefer backup path via downstream node
Prefer line card disjoint backup path
Prefer backup path with lowest total metric
Prefer node protecting backup path
Prefer backup path from ECMP set
Prefer non-ECMP backup path
Index
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
Configure IP LDP Fast Reroute Loop Free Alternate: Examples
85
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