Cisco Systems A9014CFD manual 39-8

Chapter 39 Remote Loop-Free Alternate - Fast Reroute

How to Configure Remote Loop-Free Alternate - Fast Reroute

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

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
39-8	OL-23826-09