MPLS Protection and Restoration – Part 7 (Verification Commands on Alcatel-Lucent Routers)

MPLS Recovery, Secondary Paths Verification

 

In the Alcatel-Lucent 7750 Service Routers, we can verify the Secondary LSP-Path configuration with the following commands.

Verifying secondary LSPs use the following commands:

show router mpls lsp
show router mpls lsp path

If Standby Secondary LSP-Path, the Primary andthe Secondary is up.
if Non-Standby Secondary LSP-Path, the Primary is up but the Secondary is down.

To verify the Active path (to see the primary is active)

show router mpls lsp "path_name" activepath

For detailed secondary lsp path use the following command.

show router mpls lsp "path_name" path fully_loose-2 detail

There are seperate RSVP sessions for each standby secondary LSP path.To see this use the following command:

show router RSVP sessions

Here, there is an important point:

-The primary and the secondary LSP-paths have the same Tunnel ID
-The primary and the secondary LSP-paths have different LSP IDs

Verification of Fast Reroute (FRR) Tunnels

One-to-One Backup Verification

Viewing the RSVP sessions for One-to-One Detour tunnels use the “show router rsvp sessions” command like before tunnel verifications.

You can also use the below commands:

show router rsvp sessions detour (originating detours)
show router rsvp sessions detour-transit (transiting detours)
show router rsvp sessions detour-terminate (terminating detours)

You can see the FRR status of each hop in the LSP Path with the “show router mpls lsp “path_name” path detail” command.

Facility (Many-to-One) Backup Verification

Viewing the RSVP sessions for Facility Bypass tunnels use the “show router rsvp sessions” command like before tunnel verifications.

To view the Facility Bypass tunnels use the “show router mpls bypass-tunnel detail” command.

To view the list of protected LSPs use the “show router mpls bypass-tunnel protected-lsp detail” command.

You can check the other parts of these MPLS Protection and Restoration Article series below.

MPLS Protection and Restoration – Part 1
MPLS Protection and Restoration – Part 2 (End-to-End Protection, Secondary Paths)
MPLS Protection and Restoration – Part 3 (Path Diversity in Secondary Paths)
MPLS Protection and Restoration – Part 4 (Local Protection, Fast Reroute)
MPLS Protection and Restoration – Part 5 (Fast Reroute Protection Types)
MPLS Protection and Restoration – Part 6 (RSVP Objects Used for MPLS Fast Reroute)
MPLS Protection and Restoration – Part 7 (Verification Commands on Alcatel-Lucent Routers)
MPLS Protection and Restoration – Part 8 (Actions After the Failure)
MPLS Protection and Restoration – Part 9 (Convergence Factors)
MPLS Protection and Restoration – Part 10 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 11 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 12 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 13 (Juniper Configuration Samples)


…YOU CAN REACH ALL THE “MPLS” ARTICLES AND CONFIGURATIONS BELOW…

MPLS Basics
What is MPLS?
Enabling MPLS on Cisco Router

MPLS Label Distribution Protocol, LDP
MPLS Label Distribution Protocol, LDP – Part 1
MPLS Label Distribution Protocol, LDP – Part 2
MPLS Label Distribution Protocol, LDP – Part 3 (Configuration on ALU)
MPLS Label Distribution Protocol, LDP – Part 4 (ECMP)
MPLS Label Distribution Protocol, LDP – Part 5 (Export and Import Policy, Prefix Aggregation)
MPLS Label Distribution Protocol, LDP – Part 6 (T-LDP)
MPLS Label Distribution Protocol, LDP – Part 7 (CR-LDP)

MPLS, RSVP-TE
MPLS, RSVP-TE – Part 1
MPLS, RSVP-TE – Part 2(Alcatel-Lucent Configuration)

MPLS Protection And Restoration
MPLS Protection and Restoration – Part 1
MPLS Protection and Restoration – Part 2 (End-to-End Protection, Secondary Paths)
MPLS Protection and Restoration – Part 3 (Path Diversity in Secondary Paths)
MPLS Protection and Restoration – Part 4 (Local Protection, Fast Reroute)
MPLS Protection and Restoration – Part 5 (Fast Reroute Protection Types)
MPLS Protection and Restoration – Part 6 (RSVP Objects Used for MPLS Fast Reroute)
MPLS Protection and Restoration – Part 7 (Verification Commands on Alcatel-Lucent Routers)
MPLS Protection and Restoration – Part 8 (Actions After the Failure)
MPLS Protection and Restoration – Part 9 (Convergence Factors)
MPLS Protection and Restoration – Part 10 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 11 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 12 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 13 (Juniper Configuration Samples)

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