Dell Force10 Z9000 FTOS Configuration Guide for Z9000 System - Page 959

Since preempt is enabled by default, disable the preempt function with the following command in the VRRP mode. Re-enable preempt by entering the preempt command. When preempt is enabled, it does not display in the show commands, because it is a default setting., Task Prevent any BACKUP router with a higher priority from becoming the MASTER router. Command Syntax no preempt Figure 49-11. Command Example: no preempt FTOS(conf-if-gi-1/1)#vrrp-group 111 FTOS(conf-if-gi-1/1-vrid-111)#no preempt FTOS(conf-if-gi-1/1-vrid-111)#show conf Command Mode INTERFACE-VRID Figure 49-12. Command Example Display: show config in VRID mode FTOS(conf-if-gi-1/1-vrid-111)#show conf ! vrrp-group 111 authentication-type simple 7 387a7f2df5969da4 no preempt priority 255 virtual-address 10.10.10.1 virtual-address 10.10.10.2 virtual-address 10.10.10.3 virtual-address 10.10.10.10 FTOS(conf-if-gi-1/1-vrid-111)# Change the Advertisement interval By default, the MASTER router transmits a VRRP advertisement to all members of the VRRP group every 1 second, indicating it is operational and is the MASTER router. If the VRRP group misses 3 consecutive advertisements, then the election process begins and the BACKUP virtual router with the highest priority transitions to MASTER. Note: Dell Force10 recommends you to increase the VRRP advertisement interval to a value higher than the default value of 1 second to avoid throttling VRRP advertisement packets. If you do change the time interval between VRRP advertisements on one router, you must change it on all participating routers. Change that advertisement interval with the following command in the VRRP mode: Task Change the advertisement interval setting. Command Syntax advertise-interval seconds Range: 1-255 seconds Default: 1 second Command Mode INTERFACE-VRID Virtual Router Redundancy Protocol (VRRP) | 959