Dell PowerConnect B-FCXs, Configuration Manual

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PowerConnect B-Series FCX Configuration Guide 1117
53-1002266-01
Configuring additional VRRP and VRRPE parameters
31
Syntax: backup [priority <value> ] [track-priority <value> ]
The priority <value> parameter specifies the VRRP priority for this interface and VRID. You can
specify a value from 3 – 254. The default is 100.
The track-priority <value> parameter is the same as above.
NOTE
You cannot set the priority of a VRRP Owner. The Owner priority is always 255.
VRRPE syntax
Syntax: backup [priority
<value> ] [track-priority <value> ]
The software requires you to identify a VRRPE interface as a Backup for its VRID before you can
activate the interface for the VRID. However, after you configure the VRID, you can use this
command to change its priority or track priority. The parameter values are the same as for VRRP.
Suppression of RIP advertisements on Backup routers for the Backup interface
Normally, a VRRP or VRRPE Backup includes route information for the virtual IP address (the
backed up interface) in RIP advertisements. As a result, other routers receive multiple paths for
the backed up interface and might sometimes unsuccessfully use the path to the Backup rather
than the path to the Master.
You can prevent the Backups from advertising route information for the backed up interface by
enabling suppression of the advertisements.
To suppress RIP advertisements for the backed up interface 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 Hello interval can be from 1 – 84 seconds. The default is 1 second.
NOTE
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-1/6)#ip vrrp vrid 1
Router1(config-if-1/6-vrid-1)#hello-interval 10
Syntax: hello-interval <value>
The syntax is the same for VRRP and VRRPE.