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34-10
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
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
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
router isis
Example:
Router(config)# router isis
Activates the IS-IS routing process for IP and puts the device into
router configuration mode.
Step 4
mpls traffic-eng router-id
interface-name
Example:
Router(config-router)# mpls
traffic-eng router-id Loopback102
Specifies that the traffic engineering router identifier for the node is
the IP address associated with a given interface.
• interface-name—Interface whose primary IP address is the
router's identifier.
Step 5
mpls traffic-eng {level-1 | level-2}
Example:
Router(config-router)# mpls
traffic-eng level-1
Configures a router running IS-IS so that it floods MPLS TE link
information into the indicated IS-IS level.
• level-1—Floods MPLS TE link information into IS-IS level 1.
• level-2—Floods MPLS TE link information into IS-IS level 2.
Step 6
router isis
Example:
Router(config)# router isis
Enables the IS-IS routing protocol and enters the router
configuration mode.
Step 7
net
net1
Example:
Router(config)# net
49.0001.0000.0000.0001.00
Configures an Intermediate System-to-Intermediate System (IS-IS)
network entity table (NET) for the routing process.
• net1—NET network services access point (NSAP) name or
address for the IS-IS routing process on the Mulltilayer Switch
Feature Card (MSFC) in the primary slot.
Step 8
is-type level-1
Example:
Router(config-router)# is-type level-1
Configures the routing level for an instance of the Intermediate
System-to-Intermediate System (IS-IS) routing process.
Step 9
fast-reroute per-prefix level-1 all
Example:
Router(config-router)# fast-reroute
per-prefix level-1 all
Configures an FRR path that redirects traffic to a remote LFA tunnel
for level-1 packets.
• level-1—Enables per-prefix FRR of level 1 packets.
• all—Enables FRR of all primary paths.