IES Interface Commands
Page 992 7750 SR OS Services Guide
existing non-owner master, the affect of the dynamic changing of the in-use priority is greatly
diminished.
The preempt command is only available in the non-owner vrrp virtual-router-id nodal context. The
owner may not be preempted due to the fact that the priority of non-owners can never be higher than
the owner. The owner will always preempt all other virtual routers when it is available.
Non-owner virtual router instances will 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 will only allow 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
The no form of this command prevents a non-owner virtual router instance from preempting another,
less desirable virtual router. Use the preempt command to restore the default mode.
Default preempt
priority
Syntax priority base-priority
no priority
Context config>service>ies>if>ipv6>vrrp
Description The priority command provides the ability to configure a specific priority value to the virtual router
instance. In conjunction with an optional policy command, the base-priority is used to derive the in-
use priority of the virtual router instance.
The priority command is only available in the non-owner vrrp virtual-router-id nodal context. The
priority of owner virtual router instances is permanently set to 255 and cannot be changed. For non-
owner virtual router instances, if the priority command is not executed, the base-priority will be set to
100.
The no form of this command restores the default value of 100 to base-priority.
Parameters base-priority — The base-priority parameter configures the base priority used by the virtual router
instance. If a VRRP Priority Control policy is not also defined, the base-priority will be the in-use
priority for the virtual router instance.
Values 1 — 254
Default 100
standby-forwarding
Syntax [no] standby-forwarding
Context config>service>ies>if>ipv6>vrrp
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