Configuring Ip/Ldp Fast Reroute - Cisco ASR 9000 Series Configuration Manual

Configuring IP/LDP Fast Reroute

Command or Action
Step 5
spf prefix-priority [ level { 1 | 2 }] { critical | high |
medium } { access-list-name | tag tag }
Example:
RP/0/RSP0/CPU0:router(config-isis-af)# spf
prefix-priority high tag 3
Step 6 commit
Configuring IP/LDP Fast Reroute
This optional task describes how to enable the IP/LDP fast reroute computation to converge traffic flows
around link failures.
To enable node protection on broadcast links, fast reroute and bidirectional forwarding detection (BFD)
Note
must be enabled on the interface under IS-IS.
SUMMARY STEPS
1. configure
2. router isis instance-id
3. interface type interface-path-id
4. circuit-type { level-1 | level-1-2 | level-2-only }
5. address-family { ipv4 | ipv6 } [ unicast ]
6. fast-reroute {per-link | per-prefix}
7. Do one of the following:
8. Do one of the following:
9. Do one of the following:
10. commit
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.1.x
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• fast-reroute per-link { level { 1 | 2 }}
• fast-reroute per-prefix { level { 1 | 2 }}
• fast-reroute per-link exclude interface type interface-path-id { level { 1 | 2 }}
• fast-reroute per-prefix exclude interface type interface-path-id { level { 1 | 2 }}
• fast-reroute per-link lfa-candidate interface type interface-path-id { level { 1 | 2 }}
• fast-reroute per-prefix lfa-candidate interface type interface-path-id { level { 1 | 2 }}
Purpose
Installs all routes tagged with the value 3 first.
Implementing IS-IS
OL-30423-03