Alcatel-Lucent 7210 SAS M - Page 631

Virtual Private Routed Network Services
7210 SAS M Services Guide Page 631
The no form of this command restores the default operation of discarding all ICMP Echo Request
messages destined to the non-owner virtual router instance IP addresses.
Default no ping-reply
policy
Syntax policy vrrp-policy-id
no policy
Context config>service>vprn>if>vrrp
config>service>vprn>if>ipv6>vrrp
Description This command associates a VRRP priority control policy with the virtual router instance (non-owner
context only).
Parameters vrrp-policy-id — Specifies a VRRP priority control policy.
Values 1 — 9999
preempt
Syntax preempt
no preempt
Context config>service>vprn>if
config>service>vprn>if>ipv6>vrrp
Description This command provides the ability of overriding an existing non-owner master to the virtual router
instance. Enabling preempt mode is recommended for proper operation of the base-priority and vrrp-
policy-id definitions on the virtual router instance. If the virtual router cannot preempt an existing
non-owner master, the affect of the dynamic changing of the in-use priority is greatly diminished.
The preempt command is only available in the non-owner vrrp virtual-router-id nodal context. The
owner may not be preempted due to the fact that the priority of non-owners can never be higher than
the owner. The owner will always preempt all other virtual routers when it is available.
Non-owner virtual router instances will only preempt when preempt is set and the current master has
an in-use message priority value less than the virtual router instances in-use priority.
A master non-owner virtual router will only allow itself to be preempted when the incoming VRRP
Advertisement message Priority field value is one of the following:
• Greater than the virtual router in-use priority value
• Equal to the in-use priority value and the source IP address (primary IP address) is greater than
the virtual router instance primary IP address
The no form of this command prevents a non-owner virtual router instance from preempting another,
less desirable virtual router. Use the preempt command to restore the default mode.
Default preempt