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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 39 Remote Loop-Free Alternate - Fast Reroute
How to Configure Remote Loop-Free Alternate - Fast Reroute
Configuring Remote LFA-FRR on IS-IS
To configure Remote LFA-FRR for the IS-IS routing process, complete the following steps:
SUMMARY STEPS
1. enable
2. configure terminal
3. router isis
4. net net
5. is-type level-1
6. advertise-passive-only
7. ispf level-1
8. fast-flood
9. max-lsp-lifetime seconds
10. lsp-refresh-interval seconds
11. spf-interval [level-1 | level-2] spf-max-wait [spf-initial-wait spf-second-wait]
12. prc-interval prc-max-wait [prc-initial-wait prc-second-wait]
13. lsp-gen-interval [level-1 | level-2] lsp-max-wait [lsp-initial-wait lsp-second-wait]
14. no hello padding
15. log-adjacency-changes
16. fast-reroute per-prefix level-1 all
17. fast-reroute remote-lfa level-1 mpls-ldp
Step 4
ip address
ip-address
Example:
Router(config-if)# ip address 7.7.7.1
255.255.255.0
Specifies an IP address for the specified interface.
Step 5
ip router isis
Example:
Router(config-if)# ip router isis
Configures an IS-IS routing process for an IP on an interface.
Step 6
mpls ip
Example:
Router(config-if)# mpls ip
Enables MPLS forwarding of IPv4 packets along normally routed
paths for a particular interface.
Step 7
isis network point-to-point
Example:
Router(config-if)# isis network
point-to-point
Configures a network of two networking devices that use the
integrated IS-IS routing protocol to function as a point-to-point link.
Command Purpose