Configuring a Backup Router to Preempt the VRRP Primary Router
By default, a higher-priority backup router preempts
a lower-priority primary router. To explicitly enable the primary
router to be preempted, include the preempt statement:
preempt;
You can include this statement at the following hierarchy levels:
[edit interfaces interface-name unit logical-unit-number family (inet | inet6) address address (vrrp-group | vrrp-inet6-group) group-id][edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number family (Inet | inet6) address address (vrrp-group | vrrp-inet6-group) group-id]
To prohibit a higher-priority backup router from preempting
a lower-priority primary router, include the no-preempt statement:
no-preempt;