Cisco CRS

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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