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MPLS Convergence Factors After the link failure in MPLS network, there are some actions need to be done orderly for MPLS recovery. This actions need to converge the MPLS network again. These MPLS Recovery steps are: – MPLS Recovery Failure Detection : Detecting the failure point – MPLS Recovery Failure Propagation : Notifiying other routers […]

MPLS Recovery, Actions After the Failure What Happens After the Failure Recovered By Fast Reroute (FRR) ? After detecting the failure in an MPLS network, in Fast Reroute (FRR) mechanism, PLR switches the traffic to the protected tunnel. At the same time it sends a PATH ERR message to the Head-End. In this message, it […]

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 […]

RSVP Objects,MPLS Recovery

RSVP Objects Used for MPLS Fast Reroute There some RSVP Objects used in Fast Reroute(FRR). Beside this, RSVP-TE extend for this purposes. There are also some extensions on RSVP-TE for automatic signalling in protection tunnels.So some additional objects and flags are coming for FRR. These two additional objects are FAST_REROUTE and DETOUR which is the […]


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