Configuring IPv4 VRRP packet attributes

Configuration guidelines

Configuration procedure

To configure VRRP packet attributes:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter interface view.

interface interface-type interface-number

N/A

3. Configure the authentication mode and authentication key for an IPv4 VRRP group to send and receive VRRP packets.

vrrp vrid virtual-router-id authentication-mode { md5 | simple } { cipher | plain } string

By default, authentication is disabled.

4. Set the interval at which the master in an IPv4 VRRP group sends VRRP advertisements.

vrrp vrid virtual-router-id timer advertise adver-interval

The default setting is 100 centiseconds.

As a best practice to maintain system stability, set the VRRP advertisement interval to be greater than 100 centiseconds.

5. Specify the source interface for receiving and sending VRRP packets.

vrrp vrid virtual-router-id source-interface interface-type interface-number

By default, the source interface for receiving and sending VRRP packets is not specified. The interface where the VRRP group resides sends and receives VRRP packets.

6. Enable TTL check for IPv4 VRRP packets.

vrrp check-ttl enable

By default, TTL check for IPv4 VRRP packets is enabled.

7. Return to system view.

quit

N/A

8. Set a DSCP value for VRRP packets.

vrrp dscp dscp-value

The DSCP value identifies the packet priority during transmission.

By default, the DSCP value for VRRP packets is 48.