Configuring RSVP Message Authentication on an MPLS VE Interface

RSVP Message Authentication is disabled by default. This authentication method uses MD5 for 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