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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter39 Remote Loop-Free Alternate - Fast Reroute
How to Configure Remote Loop-Free Alternate - Fast Reroute
Step 13
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.
Step 14
exit
Example:
Router(config-if)# exit
Exits the interface configuration mode and enters the global
configuration mode.
Step 15
router isis
Example:
Router(config)# router isis
Enables the IS-IS routing protocol and enters the router
configuration mode.
Step 16
fast-reroute per-prefix {level-1 |
level-2} {all | route-map
route-map-name
}
Example:
Router(config-router)# fast-reroute
per-prefix level-1 all
Configures an FRR path that redirects traffic to a remote LFA tunnel
for either level 1 or level 2 packets.
• level-1—Enables per-prefix FRR of level 1 packets.
• level-2—Enables per-prefix FRR of level 2 packets.
• all—Enables FRR of all primary paths.
• route-map—Specifies the route map for selecting primary
paths for protection.
• route-map-name—Route map name.
Step 17
fast-reroute remote-lfa {level-1 |
level-2} mpls-ldp [maximum-metric
metric-value
]
Example:
Router(config-router)# fast-reroute
remote-lfa level-1 mpls-ldp
Configures an FRR path that redirects traffic to a remote LFA
tunnel.
• level-1—Enables LFA-FRR of level 1 packets.
• level-2—Enables LFA-FRR of level 2 packets.
• mpls-ldp—Specifies that the tunnel type is MPLS or LDP.
• maximum-metric—(Optional) Specifies the maximum metric
value required to reach the release node.
• metric-value—Metric value.
Step 18
mpls ldp sync
Example:
Router(config-router)# mpls ldp sync
Enables MPLS LDP synchronization on interfaces for an IS-IS
process.
Step 19
mpls ldp igp sync holddown
milliseconds
Example:
Router(config)# mpls ldp igp sync
holddown 1000
Specifies how long an Interior Gateway Protocol (IGP) should wait
for Label Distribution Protocol (LDP) synchronization to be
achieved.
• milliseconds—Peer host name or IP address.
Command Purpose