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Page 236 7750 SR OS Router Configuration Guide
Non-owner virtual router instances only preempt when preempt is set and the current master has an
in-use message priority value less than the virtual router instances in-use priority.
A master non-owner virtual router only allows itself to be preempted when the incoming VRRP
advertisement message priority field value is one of the following:
• Greater than the virtual router in-use priority value.
• Equal to the in-use priority value and the source IP address (primary IP address) is greater than
the virtual router instance primary IP address.
By default, preempt mode is enabled on the virtual router instance.
The no form of the command disables preempt mode and prevents the non-owner virtual router
instance from preempting another, less desirable virtual router.
Default preempt - The preempt mode enabled on the virtual router instance where it will preempt a
VRRP master with a lower priority.
priority
Syntax priority base-priority
no priority
Context config>router>if>vrrp
Description This command configures the base router priority for the virtual router instance used in the master
election process.
The priority is the most important parameter set on a non-owner virtual router instance. The priority
defines a virtual router’s selection order in the master election process. Together, the priority value
and the preempt mode allow the virtual router with the best priority to become the master virtual
router.
The base-priority is used to derive the in-use priority of the virtual router instance as modified by any
optional VRRP priority control policy. VRRP priority control policies can be used to either override
or adjust the base priority value depending on events or conditions within the chassis.
The priority command is only available in the non-owner vrrp nodal context. The priority of owner
virtual router instances is permanently set to 255 and cannot be changed.
For non-owner virtual router instances, the default base priority value is 100.
The no form of the command reverts to the default value.
Default 100 - virtual router base priority set to 100
Parameters base-priority — The base priority used by the virtual router instance expressed as a decimal integer.
If no VRRP priority control policy is defined, the base-priority is the in-use priority for the
virtual router instance.
Values 1 — 254