VRRP Configuration Command Reference
430 Router Configuration Guide
Description This command configures an instance of a multi-chassis IPsec tunnel-group Priority Event used to
override the base priority value of a VRRP virtual router instance depending on the operational state
of the event.
Parameters tunnel-grp-id — Identifies the multi-chassis IPsec tunnel group whose non-forwarding state is
monitored by this priority control event.
Priority Policy Port Down Event Commands
port-down
Syntax [no] port-down port-id
Context config>vrrp>policy>priority-event
Description This command configures a port down priority control event that monitors the operational state of a
port or SONET/SDH channel. When the port or channel enters the operational down state, the event is
considered set. When the port or channel enters the operational up state, the event is considered
cleared.
Multiple unique port-down event nodes can be configured within the priority-event context up to the
overall limit of 32 events. Up to 32 events can be defined in any combination of types.
The port-down command can reference an arbitrary port or channel. The port or channel does not need
to be preprovisioned or populated within the system. The operational state of the port-down event is
set as follows:
• Set – non-provisioned
• Set – not populated
• Set – down
• Cleared – up
When the port or channel is provisioned, populated, or enters the operationally up or down state, the
event operational state is updated appropriately.
When the event enters the operationally down, non-provisioned, or non-populated state, the event is
considered to be set. When an event transitions from clear to set, the set is processed immediately and
must be reflected in the associated virtual router instances in-use priority value. As the event transitions
from cleared to set, a hold set timer is loaded with the value configured by the events hold-set
command. This timer prevents the event from clearing until it expires, damping the effect of event
flapping. If the event clears and becomes set again before the hold set timer expires, the timer is reset
to the hold-set value, extending the time before another clear can take effect.
When the event enters the operationally up state, the event is considered to be cleared. Once the events
hold-set expires, the effects of the events priority value are immediately removed from the in-use
priority of all associated virtual router instances.
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