Alcatel-Lucent 7450 Configuration Manual page 391

preempt
Syntax [no] preempt
Context config>router>if>vrrp
Description The preempt mode value controls whether a specific backup virtual router preempts a lower priority
master.
When preempt is enabled, the virtual router instance overrides any non-owner master with an "in use"
message priority value less than the virtual router instance in-use priority value. If preempt is
disabled, the virtual router only becomes master if the master down timer expires before a VRRP
advertisement message is received from another virtual router.
The IP address owner will always become master when available. Preempt mode cannot be disabled
on the owner virtual router.
The default value for preempt mode is enabled.
Default preempt
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
Parameters base-priority — The base priority used by the virtual router instance expressed as a decimal integer. If
7450 ESS Router Configuration Guide
no VRRP priority control policy is defined, the base-priority is the in-use priority for the virtual
router instance.
Values 1 — 254
VRRP
Page 391