advertisement-interval
Use this command to configure the advertisement interval of a virtual router. This is the length of time, in seconds, between each advertisement sent from the master to its backup(s). The master virtual router sends VRRP advertisements to other VRRP routers in the same group. The advertisements communicate the priority and state of the master virtual router. The VRRP advertisements are encapsulated in IP packets and sent to the multicast address assigned to the VRRP group (224.0.0.18). Advertisements are sent every second by default.
Note: Higher-priority master routers with slower transmission rates than their backup routers are unstable. This is because low-priority nodes configured to faster rates could come online and decide they should be masters before they have heard anything from the higher-priority master with a slower rate. When this happens, it is temporary: once the lower-priority node does hear from the higher-priority Mmaster, it will relinquish mastership.
Use the no parameter with this command to restore the default setting.
Command Syntax
advertisement-interval <5-4095>
no advertisement-interval
Parameter
<5-4095>
Specify the advertisement interval in centi-seconds (in multiples of 5) when VRRPv3 is enabled
Default
By default, advertisements are sent every second
Command Mode
Router mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
The example below shows how to configure an advertisement interval of 50 centi-seconds for the virtual router with VR ID 2 on interface eth0.
#configure terminal
(config)#router ip vrrp 2 eth0
(config-router)#advertisement-interval 50
Last modified date: 08/28/2023