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Table 148 Virtual Router Configuration commands
Command Description
[no] virtual-router <1-250>
preemption
Enables or disables master preemption. When enabled, if this virtual router
is in backup mode but has a higher priority than the current master, this
virtual router will preempt the lower priority master and assume control.
Note that even when preemption is disabled, this virtual router will
always preempt any other master if this switch is the owner (the IP interface
address and virtual router address are the same). By default, this option is
enabled.
virtual-router <1-250>
enable
Enables this virtual router.
Command mode: Router VRRP
no virtual-router <1-250>
enable
Disables this virtual router.
Command mode: Router VRRP
no virtual-router <1-250>
Deletes this virtual router from the switch configuration.
Command mode: Router VRRP
show ip vrrp virtual-router
<1-255>
Displays the current configuration information for this virtual router.
Command mode: All except User EXEC
VRRP Virtual Router Priority Tracking configuration
These commands are used to modify the priority system used when electing the master router from a pool
of virtual routers. Various tracking criteria can be used to bias the election results. Each time one of the
tracking criteria is met, the priority level for the virtual router is increased by an amount defined through
VRRP Tracking.
Criteria are tracked dynamically, continuously updating virtual router priority levels when enabled. If the
virtual router preemption option is enabled, this virtual router can assume master routing authority when its
priority level rises above that of the current master.
Some tracking criteria (virtual routers, interfaces, and ports below) apply to standard virtual
routers, otherwise called virtual interface routers. A virtual server router is defined as any virtual router
whose IP address is the same as any configured virtual server IP address.
The following table describes the Virtual Router Priority Tracking Configuration commands.
Table 149 Virtual Router Priority Tracking Configuration commands
Command Description
[no] virtual-router <1-250>
track virtual-routers
When enabled, the priority for this virtual router will be increased for each
virtual router in master mode on this switch. This is useful for making sure
that traffic for any particular client/server pairing are handled by the same
switch, increasing routing and load balancing efficiency. This command is
disabled by default.
Command mode: Router VRRP