Adaptive LSP configuration

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

Complete the following steps to configure an adaptive LSP.

Configure the device.
```
device# configure
```
Enable the MPLS router.
```
device(config)# router mpls
```
Set the signaled label switched path (LSP).
```
device(config-router-mpls)# lsp t1
```
Set the egress router of the LSP.
```
device(config-router-mpls-lsp-t1)# to 10.3.3.3
```
In this example, the IP address of the egress router is 10.3.3.3.
Set the ingress router of the LSP.
```
device(config-router-mpls-lsp-t1)# from 10.2.2.2
```
In this example, the IP address of the ingress router is 10.2.2.2.
Set tie traffic engineering parameters mean rate in kbits. per second.
```
device(config-router-mpls-lsp-t1)# traffic-eng mean-rate 1000
```
In this example, the mean rate is set to 1000 kbits. per second.
Enable the LSP to be modified without disabling the LSP.
```
device(config-router-mpls-lsp-t1)# adaptive
```
Set-up for fast reroute options.
```
device(config-router-mpls-lsp-t1)# frr
```

Exit the current mode.

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

Example

The following example shows how to configure an LSP to be adaptive.

device# configure 
device(config)# router mpls
device(config-router-mpls)# lsp t1
device(config-router-mpls-lsp-t1)# to 10.3.3.3
device(config-router-mpls-lsp-t1)# from 10.2.2.2
device(config-router-mpls-lsp-t1)# traffic-eng mean-rate 1000
device(config-router-mpls-lsp-t1)# adaptive
device(config-router-mpls-lsp-t1)# frr
device(config-router-mpls-lsp-t1-frr)# exit
device(config-router-mpls-lsp-t1)# enable