Configuration of End-to-End GMPLS Recovery

End-to-end GMPLS recovery is configured at the LSP level using the e2e-protection-type command, as follows:

config
   router
      gmpls
         lsp gmpls-tunnel-name [gmpls-uni]
            to remote-uni-c-gmpls-router-id
            e2e-protection-type [unprotected | 1toN | sbr]
            revert-timer timer-value

The protection type names are common to those used in the optical network. The protection types are as follows:

The default end-to-end protection type is unprotected.

It is possible to configure segment protection on a path independently of the type of end-to-end protection that is configured.

1toN protection requires the configuration of multiple working paths and a protect path for a GMPLS LSP. The working paths are then associated with different GMPLS Tunnel Groups. Configuration is as follows:

config 
  router
     gmpls
        lsp lsp-name gmpls-uni 
            to remote-uni-c-gmpls-router-id
            e2e-protection-type 1toN // Only these types are allowed for gmpls-uni
            switching-type ethernet 
            encoding-type ethernet 
            generalized-pid ethernet 
            revert-timer timer-value
            retry-limit limit
        working-path path-name1 [lmp-peer <peer-gmpls-router-id>] ... 
            [no] shutdown
            working-path path-name2 [lmp-peer peer-gmpls-router-id] ... 
            [no] shutdown
        working-path path-name3 [lmp-peer peer-gmpls-router-id] ... 
            [no] shutdown
        protect-path path-name4 [lmp-peer peer-gmpls-router-id] ... 
            [no] shutdown

The LSP is then bound to one or more GMPLS tunnel groups. Load sharing or 1:N protection may be used across the working paths. The load sharing case is described below.

For the non-load sharing 1:N case, a single LSP is assigned to each tunnel group, as follows:

For the head end node:

config > gmpls-tunnel-group 2 create
   type head-end
   far-end remote-uni-c-router-id
   mode protection
   member 1 create
      glsp session-name lsp-name:path-name1 
      no shutdown
   no shutdown
config > gmpls-tunnel-group 3
   type head-end
   far-end remote-uni-c-router-id
   mode protection
   member 1 create
      glsp session-name lsp-name:path-name1 
      no shutdown
   no shutdown
config > gmpls-tunnel-group 4
   type head-end
   far-end remote-uni-c-router-id
   mode protection
   member 1 create
      glsp session-name lsp-name:path-name1 
      no shutdown
   no shutdown

For the tail end node:

config > gmpls-tunnel-group 2 
   type tail-end
   far-end remote-uni-c-router-id
   mode protection
   member 1 create
      glsp session-name lsp-name:path-name1 
      no shutdown
   no shutdown
config > gmpls-tunnel-group 3 
   type tail-end
   far-end remote-uni-c-router-id
   mode protection
   member 1 create
      glsp session-name lsp-name:path-name1 
      no shutdown
   no shutdown
config > gmpls-tunnel-group 4 
   type tail-end
   far-end remote-uni-c-router-id
   mode protection
   member 1 create
      glsp session-name lsp-name:path-name1 
      no shutdown
   no shutdown

A shutdown of a working path does not trigger a switchover to the protect path. The user should either use the tools>perform>router>gmpls force or manual commands, or shut down the TE-Link, data bearer, or port associated with the gLSP path.

Parent topic: GMPLS