Verification

The backup path shown next in the RIB, FIB, and LFIB confirms that the PLR router P2 provides node as well as SRLG protection.

Backup path in the RIB

The following output confirms that the provided fast reroute path includes node+SRLG protection in the event of a failure on the P2–P3 link:

RP/0/RP0/CPU0:P2#show isis fast-reroute detail 5.5.5.5/32
L2 5.5.5.5/32 [30/115] Label: 16005, medium priority
   Installed Jan 01 07:54:10.977 for 00:00:17
     via 23.0.0.3, GigabitEthernet0/0/0/0, Label: 16005, P3, SRGB Base: 16000, Weight: 0
       Backup path: TI-LFA (node+srlg), via 26.0.0.6, GigabitEthernet0/0/0/1 P6, SRGB Base: 16000, Weight: 0, Metric: 220
       Backup tunnel: tunnel-te32769
         P node: P6.00 [6.6.6.6], Label: ImpNull
         Q node: P7.00...