Configuring Mpls Lfa Frr - Cisco ASR 9000 Series Configuration Manual

MLDP Loop-Free Alternative Fast Reroute
mpls traffic-eng
interface Bundle-Ether100.1
!
interface Bundle-Ether100.2
!
interface Loopback0
!
In the above configuration example, bfd minimum-interval 3 and bfd multiplier 2 is configured; this means,
that when a core-facing interface of a remote peer is down, the router detects this disconnect event in as short
a time as 6 milliseconds.

Configuring MPLS LFA FRR

Before You Begin
In MPLS configuration, configure session protection to support LFA FRR feature. The detailed configuration
steps and an example follows.
SUMMARY STEPS
1. configure
2. router ospf 0
3. nsr
4. graceful-restart
5. router-id 20.20.20.20
6. session protection
7. address-family ipv4
8. commit
DETAILED STEPS
Command or Action
Step 1
configure
Example:
RP/0/RSP0/CPU0:router# configure
Step 2 router ospf 0
Example:
RP/0/RSP0/CPU0:router(config)#mpls ldp
Step 3 nsr
Example:
RP/0/RSP0/CPU0:router(config-ldp)# nsr
Cisco ASR 9000 Series Aggregation Services Router Multicast Configuration Guide, Release 6.0.x
140
bfd fast-detect
fast-reroute per-prefix
bfd fast-detect
fast-reroute per-prefix
Implementing Layer-3 Multicast Routing on Cisco IOS XR Software
Purpose
Enters global configuration mode.
Enters the LDP configuration mode.
Configures non-stop routing.