Cisco CRS Configuration Guide

Related Topics
IP LDP Fast Reroute Loop Free Alternate, on page 19
Verify IP LDP Fast Reroute Loop Free Alternate: Example
The following examples show how to verify the IP LDP FRR LFA feature on the router.
The following example shows how to verify ISIS FRR output:
RP/0/RP0/CPU0:router#show isis fast-reroute summary
IS-IS 1 IPv4 Unicast FRR summary
Critical High Medium Low Total
Priority Priority Priority Priority
Prefixes reachable in L1
All paths protected 0 0 4 1008 1012
Some paths protected 0 0 0 0 0
Unprotected 0 0 0 0 0
Protection coverage 0.00% 0.00% 100.00% 100.00% 100.00%
Prefixes reachable in L2
All paths protected 0 0 1 0 1
Some paths protected 0 0 0 0 0
Unprotected 0 0 0 0 0
Protection coverage 0.00% 0.00% 100.00% 0.00% 100.00%
The following example shows how to verify the IGP route 211.1.1.1/24 in ISIS Fast Reroute output:
RP/0/RP0/CPU0:router#show isis fast-reroute 211.1.1.1/24
L1 211.1.1.1/24 [40/115]
via 12.0.0.2, GigabitEthernet0/6/0/13, NORTH
FRR backup via 14.0.2.2, GigabitEthernet0/6/0/0.3, SOUTH
RP/0/RP0/CPU0:router#show isis fast-reroute 211.1.1.1/24 detail
L1 211.1.1.1/24 [40/115] low priority
via 12.0.0.2, GigabitEthernet0/6/0/13, NORTH
FRR backup via 14.0.2.2, GigabitEthernet0/6/0/0.3, SOUTH
P: No, TM: 130, LC: No, NP: Yes, D: Yes
src sr1.00-00, 173.1.1.2
L2 adv [40] native, propagated
The following example shows how to verify the IGP route 211.1.1.1/24 in RIB output:
RP/0/RP0/CPU0:router#show route 211.1.1.1/24
Routing entry for 211.1.1.0/24
Known via "isis 1", distance 115, metric 40, type level-1
Installed Nov 27 10:22:20.311 for 1d08h
Routing Descriptor Blocks
12.0.0.2, from 173.1.1.2, via GigabitEthernet0/6/0/13, Protected
Route metric is 40
14.0.2.2, from 173.1.1.2, via GigabitEthernet0/6/0/0.3, Backup
Route metric is 0
No advertising protos.
The following example shows how to verify the IGP route 211.1.1.1/24 in FIB output:
RP/0/RP0/CPU0:router#show cef 211.1.1.1/24
211.1.1.0/24, version 0, internal 0x40040001 (ptr 0x9d9e1a68) [1], 0x0 \
(0x9ce0ec40), 0x4500 (0x9e2c69e4)
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
86
Implementing MPLS Label Distribution Protocol
Verify IP LDP Fast Reroute Loop Free Alternate: Example

Cisco CRS Specifications

General

Operating System	Cisco IOS XR
Product Type	Core Router
Form Factor	Modular Chassis
Dimensions	Varies by chassis type
Weight	Varies by chassis type
Architecture	Distributed
Switch Fabric	Multi-stage
Interface Support	Ethernet, SONET/SDH, OTN
Interfaces/Ports	Varies by line card
Port Density	Varies by line card
Routing Protocol	BGP, IS-IS, OSPF, MPLS
Management	CLI, SNMP
Power Supply	Redundant, hot-swappable
Cooling	Redundant, Hot-swappable Fan Trays
Supported Protocols	IPv4, IPv6, MPLS
Management Interfaces	Ethernet, console
Security Features	ACLs