Alcatel-Lucent 7450 Configuration Manual page 410

Priority Policy Host Unreachable Event Commands
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.
The hold-set timer be expired and the historical success rate must be met prior to the event
operational state becoming cleared.
The no form of the command deletes the specific IP host monitoring event. The event may be deleted
at anytime. When the event is deleted, the in-use priority of all associated virtual router instances
must be reevaluated. The event's hold-set timer has no effect on the removal procedure.
Default
no host-unreachable — No host unreachable priority events are created.
Parameters ip-addr — The IP address of the host for which the specific event will monitor connectivity. The ip-
interval
Syntax interval seconds
no interval
Context config>vrrp>priority-event>host-unreachable
Description This command configures the number of seconds between host unreachable priority event ICMP
echo request messages directed to the host IP address.
The no form of the command reverts to the default value.
Default 1
Parameters seconds — The number of seconds between the ICMP echo request messages sent to the host IP
padding-size
Syntax padding-size size
no padding-size
Context config>vrrp>priority-event>host-unreachable
Description
This command allows the operator to increase the size of IP packet by padding the PDU.
The no form of the command reverts to the default.
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addr can only be monitored by a single event in this policy. The IP address can be monitored by
multiple VRRP priority control policies. The IP address can be used in one or multiple ping
requests. Each VRRP priority control host-unreachable and ping destined to the same ip-addr
is uniquely identified on a per message basis. Each session originates a unique identifier value
for the ICMP echo request messages it generates. This allows received ICMP echo reply
messages to be directed to the appropriate sending application.
Values ipv4-address :
address for the host unreachable priority event.
Values 1 — 60
a.b.c.d
7450 ESS Router Configuration Guide