BigIron RX Series Configuration Guide 45353-1001810-01Configuring additional VRRP and VRRPE parameters 17Dead intervalThe Dead interval is the number of seconds a Backup waits for a Hello message from the Masterbefore determining that the Master is dead. When Backups determine that the Master is dead, theBackup with the highest priority becomes the new Master. The Dead interval can be from 1 – 84seconds. The default is 3.5 seconds. This is three times the default Hello interval (1 second) plusone-half second added by the router software. The software automatically adds one-half second tothe Dead interval value you enter.To change the Dead interval on a Backup to 30 seconds, enter the following commands.Router2(config)# inter e 1/5Router2(config-if-e10000-1/5)# ip vrrp vrid 1Router2(config-if-e10000-1/5-vrid-1)# dead-interval 30Syntax: dead-interval <value>The Dead interval can be from 1 – 84 seconds. The default is 3.5 seconds.The syntax is the same for VRRP and VRRPE.Backup hello message state and intervalBy default, Backup do not send Hello messages to advertise themselves to the Master. You canenable these messages if desired and also change the message interval.To enable a Backup to send Hello messages to the Master, enter commands such as the following.BigIron RX(config)# router vrrpBigIron RX(config)# inter e 1/6BigIron RX(config-if-e10000-1/6)# ip vrrp vrid 1BigIron RX(config-if-e10000-1/6-vrid-1)# advertise backupSyntax: [no] advertise backupWhen you enable a Backup to send Hello messages, the Backup sends a Hello messages to theMaster every 60 seconds by default. You can change the interval to be up to 3600 seconds. To doso, enter commands such as the following.BigIron RX(config)# router vrrpBigIron RX(config)# inter e 1/6BigIron RX(config-if-e10000-1/6)# ip vrrp vrid 1BigIron RX(config-if-e10000-1/6-vrid-1)# backup-hello-interval 180Syntax: [no] backup-hello-interval The parameter specifies the message interval and can be from 60 – 3600 seconds. Thedefault is 60 seconds.The syntax is the same for VRRP and VRRPE.Track portYou can configure the virtual router to track the link state of interfaces on the device. Thiscapability is quite useful for tracking the state of the exit interface for the path for which the virtualrouter is providing redundancy. Refer to “Track ports and track priority” on page 442.
