Cisco Systems A9014CFD manual 34-10

Chapter 34 MPLS Traffic Engineering - Fast Reroute Link Protection

How to Configure Traffic Engineering - Fast Reroute Link Protection

DETAILED STEPS

	Command	Purpose
Step 1	enable	Enables privileged EXEC mode.
		• Enter your password if prompted.
	Example:
	Router> enable
Step 2	configure terminal	Enters global configuration mode.
	Example:
	Router# configure terminal
Step 3	router isis	Activates the IS-IS routing process for IP and puts the device into
		router configuration mode.
	Example:
	Router(config)# router isis
Step 4	mpls traffic-eng router-id	Specifies that the traffic engineering router identifier for the node is
	interface-name	the IP address associated with a given interface.
	Example:	• interface-name—Interface whose primary IP address is the
		router's identifier.
	Router(config-router)# mpls
	traffic-eng router-id Loopback102
Step 5	mpls traffic-eng {level-1 level-2}	Configures a router running IS-IS so that it floods MPLS TE link
		information into the indicated IS-IS level.
	Example:	• level-1—Floods MPLS TE link information into IS-IS level 1.
	Router(config-router)# mpls	• level-2—Floods MPLS TE link information into IS-IS level 2.
	traffic-eng level-1
Step 6	router isis	Enables the IS-IS routing protocol and enters the router
		configuration mode.
	Example:
	Router(config)# router isis
Step 7	net net1	Configures an Intermediate System-to-Intermediate System (IS-IS)
		network entity table (NET) for the routing process.
	Example:	• net1—NET network services access point (NSAP) name or
	Router(config)# net	address for the IS-IS routing process on the Mulltilayer Switch
	49.0001.0000.0000.0001.00	Feature Card (MSFC) in the primary slot.
Step 8	is-type level-1	Configures the routing level for an instance of the Intermediate
		System-to-Intermediate System (IS-IS) routing process.
	Example:
	Router(config-router)# is-type level-1
Step 9	fast-reroute per-prefix level-1 all	Configures an FRR path that redirects traffic to a remote LFA tunnel
		for level-1 packets.
	Example:	• level-1—Enables per-prefix FRR of level 1 packets.
	Router(config-router)# fast-reroute	• all—Enables FRR of all primary paths.
	per-prefix level-1 all

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
34-10	OL-23826-09