156-215.80 · Question #360
When using Monitored circuit VRRP, what is a priority delta?
The correct answer is C. When an interface fails the priority delta is subtracted from the priority. In Monitored Circuit VRRP, the priority delta is a value that is subtracted from a router's VRRP priority when a monitored interface goes down.
Question
When using Monitored circuit VRRP, what is a priority delta?
Options
- AWhen an interface fails the priority changes to the priority delta
- BWhen an interface fails the delta claims the priority
- CWhen an interface fails the priority delta is subtracted from the priority
- DWhen an interface fails the priority delta decides if the other interfaces takes over
How the community answered
(17 responses)- C94% (16)
- D6% (1)
Why each option
In Monitored Circuit VRRP, the priority delta is a value that is subtracted from a router's VRRP priority when a monitored interface goes down.
The priority does not change to the priority delta value; the delta is a subtracted offset, not a replacement value for the priority.
'The delta claims the priority' is not a technically meaningful or accurate description of VRRP priority delta behavior.
When a monitored interface fails in a VRRP Monitored Circuit configuration, the priority delta value is subtracted from the router's current VRRP priority. This reduction can cause the router's effective priority to drop below that of the backup router, triggering a VRRP failover so the backup assumes the master role.
The priority delta does not independently decide failover; it is subtracted from the priority, and the resulting lower priority value is what triggers the election of a new master.
Concept tested: VRRP Monitored Circuit priority delta behavior
Source: https://sc1.checkpoint.com/documents/R81/WebAdminGuides/EN/CP_R81_Gaia_AdminGuide/Topics-GAG/VRRP-Monitored-Circuit.htm
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