Global revertiveness configuration

Global revertiveness is enabled by default in FRR mode for an adaptive LSP.

About this task

Complete the following steps to configure global revertiveness.

Procedure

Configure the device.
```
device# configure
```
Enable the MPLS router.
```
device(config)# router mpls
```
Enable to configure policy parameters.
```
device(config-router-mpls)# policy
```
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.
Exit the current level.
```
device(config-router-mpls-policy)# exit
```
Set the signaled label switched path (LSP).
```
device(config-router-mpls)# lsp t1
```
In this example, the LSPs name is "t1".
Enable the LSP to be modified without disabling the LSP.
```
device(config-router-mpls-lsp-t1)# adaptive
```
Enable for fast reroute options.
```
device(config-router-mpls-lsp-t1)# frr
```
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.

Exit from the current level.

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

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