Configuring RSVP Message Authentication on an MPLS VE Interface

Complete the following steps to configure RSVP message authentication for MPLS interface ve 100.

Configure the device.
```
device# configure
```
Enable the MPLS router.
```
device(config)# router mpls
```
Specify MPLS-capable Virtual Ethernet (VE) interface.
```
device(config-router-mpls)# mpls-interface ve 100
```
In this example, VE interface 100 is selected.

device(config-router-mpls-if-ve-100)# rsvp

Configure RSVP message authentication for MPLS interface ve 100.
```
device(config-router-mpls-if-ve-100-rsvp)# authentication key private
```
in this example, the variable private specifies a text string of up to 64 characters that is encrypted and used for RSVP message authentication.

Example

The following example configures RSVP message authentication using MD5 for a MPLS VE interface.

device# configure 
device(config)# router mpls
device(config-router-mpls)# mpls-interface ve 100
device(config-router-mpls-if-ve-100)# rsvp
device(config-router-mpls-if-ve-100-rsvp)# authentication key private