[c-nsp] MPLS TE FRR - IOS XR

Mohammad Khalil eng_mssk at hotmail.com
Sun Jun 9 05:35:42 EDT 2024


Greetings
I have the below topology for which am trying to deploy MPLS TE FRR (Link protection) on IOS XR.

CE1 – PE2 – P3 – PE6 – CE7
             |        |   |   
           P4            P5         

Nothing special about the deployment , static routing running between PE and CE for VRF transport.

The main concern is PE6 (Which is IOS XR based).

The active tunnel is tunnel-te0:
interface tunnel-te0
 ipv4 unnumbered Loopback0
 autoroute announce
 destination 10.1.100.2
 fast-reroute
 path-option 1 explicit name PATH

The backup tunnel is tunnel-te1:
interface tunnel-te1
 ipv4 unnumbered Loopback0
 autoroute announce
 !
 destination 10.1.100.2
 path-option 1 explicit name REPAIR2 protected-by 2
 path-option 2 dynamic

The REPAIR2 explicit path is to exclude the link between PE6 and P3

The active tunnel is working fine (Trace between both CEs is functioning well).

RP/0/0/CPU0:PE6#show mpls traffic-eng tunnels brief
Sun Jun  9 07:59:43.561 UTC

                     TUNNEL NAME         DESTINATION      STATUS  STATE
                      tunnel-te0          10.1.100.2          up  up
                      tunnel-te1          10.1.100.2          up  up
                          PE2_t0          10.1.100.6          up  up

RP/0/0/CPU0:PE6#show mpls traffic-eng fast-reroute database
Sun Jun  9 08:00:00.430 UTC
Tunnel head FRR information:
Tunnel       Out Intf : Label   FRR Intf : Label   Status
------------ ------------------ ------------------ -------
tt0          Gi0/0/0/2:30       tt1:Pop            Ready

Is there anything missing?
Note : MPLS LDP is enabled globally to ensure LFIB population.

Appreciated.


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