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Virtual Router Priority –
• The Owner of the virtual IP address is automatically assigned the highest
possible virtual router priority of 255. The backup router with the
highest priority will become the master router if the current master fails.
However, because the priority of the virtual IP address Owner is the
highest, the original master router will always become the active master
router when it recovers.
• If two or more routers are configured with the same VRRP priority, the
router with the higher IP address is elected as the new master router if
the current master fails.
Preempting the Acting Master –
•The virtual IP Owner has the highest priority, so no other router can
preempt it, and it will always resume control as the master virtual router
when it comes back on line. The preempt function only allows a backup
router to take over from another backup router that is temporarily acting
as the group master. If preemption is enabled and this router has a higher
priority than the current acting master when it comes on line, it will take
over as the acting group master.
• You can add a delay to the preempt function to give additional time to
receive an advertisement message from the current master before taking
control. If the router attempting to become the master has just come on
line, this delay also gives it time to gather information for its routing table
before actually preempting the currently active master router.
Field Attributes (VRRP Group Configuration)
• VLAN ID – ID of a VLAN configured with an IP interface.
(Range: 1-4093; Default: 1)
• VRID – VRRP group identifier. (Range: 1-255)
• State – VRRP router role. (Values: Master, Backup)
• Virtual Address – Virtual IP address for this group.
• Interval – Interval at which the master virtual router sends
advertisements communicating its state as the master.