Configuring VRRP Preemption and Hold Time
Configuring VRRP Preemption
By default, a higher-priority VRRP backup switch preempts a lower-priority primary switch. To explicitly enable this behavior, include the following statement:
To prohibit a higher-priority VRRP backup switch from preempting a lower-priority primary switch, include the following statement on the lower-priority switch:
You can include these statements at the following hierarchy level:
[edit interfaces interface-name unit logical-unit-number family inet address address vrrp-group group-id]
Configuring the Preemption Hold Time
You can also configure a preemption hold time, which is the number of seconds a higher-priority backup router that has just started up waits before preempting the primary router. You might want to configure a hold time so that routing protocols or other Junos OS components converge before preemption occurs.
The hold time is applied only on startup. By default, the hold-time value is 0 seconds, meaning that preemption can occur immediately after the backup router starts up.
To modify the preemption hold-time value, configure the following statement:
The hold time can be from 0 through 3600 seconds.
You can include this statement at the following hierarchy level:
[edit interfaces interface-name unit logical-unit-number family inet address vrrp-group group-id] preempt