Alcatel-Lucent 7705 Configuration Manual page 247

VRRP Priority Event Commands
priority-event
Syntax [no] priority-event
Context config>vrrp>policy
Description This command creates the context to configure VRRP priority control events used to define criteria to
modify the VRRP in-use priority.
A priority control event specifies an object to monitor and the effect on the in-use priority level for an
associated virtual router instance.
Up to 32 priority control events can be configured.
The no form of this command clears any configured priority events.
host-unreachable
Syntax host-unreachable ip-address
no host-unreachable
Context config>vrrp>policy>priority-event
Description This command creates the context to configure a host unreachable priority control event to monitor the
ability to receive ICMP echo reply packets from an IP host address.
A host unreachable priority event creates a continuous ICMP echo request (ping) probe to the specified
IP address. If a ping fails, the event is considered to be set. If a ping is successful, the event is
considered to be cleared.
Up to 32 unique (different IP address) host unreachable events can be configured.
The host-unreachable command can reference any valid local or remote IP address. The ability to use
ARP to find a local IP address or find a remote IP address within a route prefix in the route table is
considered part of the monitoring procedure. The host unreachable priority event operational state
tracks ARP or route table entries dynamically appearing and disappearing from the system. The
operational state of the host unreachable event can be one of the following:
7705 SAR OS Router Configuration Guide
Host Unreachable
Operational State
Set – no ARP
Set – no route
Description
No ARP address found for IP address for drop-count consecutive
attempts. Only applies when IP address is considered local.
No route exists for IP address for drop-count consecutive attempts.
Only applies when IP address is considered remote.
VRRP
247