Global revertiveness configuration

1. Configure the device.
   

   device# configure

2. Enable the MPLS router.
   

   device(config)# router mpls

3. Enable to configure policy parameters.
   

   device(config-router-mpls)# policy

4. Set the LSPs connect maximum number of retries.
   

   device(config-router-mpls-policy)# retry-limit 20

   In this example, the maximum number of retries is set to 20.
5. Exit the current level.
   

   device(config-router-mpls-policy)# exit

6. Set the signaled label switched path (LSP).
   

   device(config-router-mpls)# lsp t1

   In this example, the LSPs name is "t1".
7. Enable the LSP to be modified without disabling the LSP.
   

   device(config-router-mpls-lsp-t1)# adaptive

8. Enable for fast reroute options.
   

   device(config-router-mpls-lsp-t1)# frr

9. Configure the revertive hold time for the LSP.
   

   device(config-router-mpls-lsp-t1-frr)# revertive holdtime 20

   In this example, the revertive hold time is set to 20.
10. Exit from the current level.
    

    device(config-routr-mpls-lsp-t1-frr)# exit

11. Apply the parameter modifications to the LSP.
    

    device(config-router-mpls-lsp-t1)# commit

Example

The following example show the how the global revertiveness is enabled by default in the fast reroute mode for an adaptive LSP.

device# configure
device(config)# router mpls
device(config-router-mpls)# policy
device(config-router-mpls-policy)# retry-limit 20
device(config-router-mpls-policy)# exit
device(config-router-mpls)# lsp t1
device(config-router-mpls-lsp-t1)# adaptive
device(config-router-mpls-lsp-t1)# frr
device(config-router-mpls-lsp-t1-frr)# revertive holdtime 20
device(config-router-mpls-lsp-t1-frr)# exit
device(config-router-mpls-lsp-t1)# commit