VRRP
7705 SAR OS Router Configuration Guide 245
delta-in-use-limit
Syntax delta-in-use-limit limit
no delta-in-use-limit
Context config>vrrp>policy
Description This command sets a lower limit on the virtual router in-use priority that can be derived from the delta
priority control events.
Each VRRP priority ID places limits on the delta priority control events to define the in-use priority of
the virtual router instance. Setting this limit prevents the sum of the delta priority events from lowering
the in-use priority value of the associated virtual router instances below the configured value.
The limit has no effect on explicit priority control events. Explicit priority control events are controlled
by setting the in-use priority to any value between 1 and 254.
Only non-owner virtual router instances can be associated with VRRP priority control policies and
their priority control events.
Once the total sum of all delta events is calculated and subtracted from the base priority of the virtual
router instance, the result is compared to the delta-in-use-limit value. If the result is less than the limit,
the delta-in-use-limit value is used as the virtual router in-use priority value. If an explicit priority
control event overrides the delta priority control events, the delta-in-use-limit has no effect.
Setting the limit to a higher value than the default of 1 limits the effect of the delta priority control
events on the virtual router instance base priority value. This allows for multiple priority control events
while minimizing the overall effect on the in-use priority
Setting the limit to a value equal to or larger than the virtual router instance base priority prevents the
delta priority control events from having any effect on the virtual router instance in-use priority value.
Changing the in-use priority limit causes an immediate re-evaluation of the in-use priority values for
all virtual router instances associated with this VRRP policy ID based on the current sum of all active
delta control policy events.
The no form of the command reverts to the default value.
Default 1
Parameters limit — specifies the lower limit of the in-use priority, as modified by priority control policies. The
limit has the same range as the non-owner virtual router instance base-priority parameter. If
the result of the total delta priority control events minus the virtual router instance base
priority is less than the limit, the limit value is used as the virtual router instance in-use
priority value.
Values 1 to 254
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