Command Reference Guide

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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.
The following table describes the Virtual Router Priority Tracking Configuration commands.
Table 150 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
[no] virtual-router <1-250>
track interfaces
When enabled, the priority for this virtual router will be increased for
each other IP interface active on this switch. An IP interface is
considered active when there is at least one active port on the same
VLAN. This helps elect the virtual routers with the most available routes
as the master. This command is disabled by default.
Command mode: Router VRRP
[no] virtual-router <1-250>
track ports
When enabled, the priority for this virtual router will be increased for
each active port on the same VLAN. A port is considered ―active‖ if it
has a link and is forwarding traffic. This helps elect the virtual routers
with the most available ports as the master. This command is disabled
by default.
Command mode: Router VRRP
show ip vrrp virtual-router
<1-250> track
Displays the current configuration for priority tracking for this virtual
router.
Command mode: All
VRRP Virtual Router Group configuration
The Virtual Router Group commands are used for associating all virtual routers into a single logical virtual
router, which forces all virtual routers on the switch to either be master or backup as a group. A virtual
router is defined by its virtual router ID and an IP address. On each VRRP-capable routing device
participating in redundancy for this virtual router, a virtual router will be configured to share the same
virtual router ID and IP address.
The following table describes the Virtual Router Group Configuration commands.
Table 151 Virtual Router Group Configuration commands
Command
Description
group virtual-router-id <1-
250>
Defines the virtual router ID.
The virtual router ID for standard virtual routers (where the
virtual router IP address is not the same as any virtual server) can be
any integer between 1 and 250. All virtual router ID values
must be unique within the VLAN to which the virtual router‘s IP interface
belongs. The default virtual router ID is 1.
Command mode: Router VRRP
group interface <1-249>
Selects a switch IP interface. The default switch IP interface number is 1.
Command mode: Router VRRP