Dell PowerConnect B-RX BigIron RX Series Configuration Guide v02.7.03 - Page 528

17 Configuring additional VRRP and VRRPE parameters Suppression of RIP advertisements on backup routers for the backup up interface Normally, a VRRP or VRRPE Backup includes route information for the virtual IP address in RIP advertisements. As a result, other routers receive multiple paths for the Backup router and might sometimes unsuccessfully use the path to the Backup router rather than the path to the Master. You can prevent the Backup routers from advertising route information for the interface on which they are defined by enabling suppression of the advertisements. To suppress RIP advertisements for interface on which a Backup router is defined in Router2, enter the following commands. Router2(config)# router rip Router2(config-rip-router)# use-vrrp-path Syntax: use-vrrp-path The syntax is the same for VRRP and VRRPE. Hello interval The Master periodically sends Hello messages to the Backups. The Backups use the Hello messages as verification that the Master is still on-line. If the Backup routers stop receiving the Hello messages for the period of time specified by the Dead interval, the Backup routers determine that the Master router is dead. At this point, the Backup router with the highest priority becomes the new Master router. The default Dead interval is three times the Hello Interval plus one-half second. Generally, if you change the Hello interval, you also should change the Dead interval on the Backup routers. To change the Hello interval on the Master to 10 seconds, enter the following commands. Router1(config)# inter e 1/6 Router1(config-if-e10000-1/6)# ip vrrp vrid 1 Router1(config-if-e10000-1/6-vrid-1)# hello-interval 10 Syntax: hello-interval The Hello interval can be from 1 - 84 seconds. The default is 1 second. The syntax is the same for VRRP and VRRPE. Dead interval The Dead interval is the number of seconds a Backup waits for a Hello message from the Master before determining that the Master is dead. When Backups determine that the Master is dead, the Backup with the highest priority becomes the new Master. The Dead interval can be from 1 - 84 seconds. The default is 3.5 seconds. This is three times the default Hello interval (1 second) plus one-half second added by the router software. The software automatically adds one-half second to the Dead interval value you enter. To change the Dead interval on a Backup to 30 seconds, enter the following commands. Router2(config)# inter e 1/5 Router2(config-if-e10000-1/5)# ip vrrp vrid 1 Router2(config-if-e10000-1/5-vrid-1)# dead-interval 30 456 BigIron RX Series Configuration Guide 53-1001986-01