preempt
27-34 IPv4 Advanced Routing Protocol Configuration
then advertisements are sent every advertising interval to let other VRRP routers in this VLAN/
VRID know the router is still acting as master of the VLAN/VRID.
All routers with the same VRID should be configured with the same advertisement interval.
Example
This example shows how set an advertise interval of 3 seconds on the VLAN 1 interface, VRID 1:
C3(su)->router(Config)#router vrrp
C3(su)->router(Config-router)#advertise-interval vlan 1 1 3
preempt
Use this command to enable or disable preempt mode on a VRRP router. The no form of this
command disables preempt mode.
Syntax
preempt vlan-id vrid
no preempt vlan-id vrid
Parameters
Defaults
None.
Mode
Router configuration: C3(su)->router(Config-router)#
Usage
Preempt is enabled on VRRP routers by default, which allows a higher priority backup router to
preempt a lower priority master.
The router that owns the virtual router IP address always preempts other routers, regardless of
this setting.
Example
This example shows how to disable preempt mode on the VLAN 1 interface, VRID 1:
C3(su)->router(Config)#router vrrp
C3(su)->router(Config-router)#no preempt vlan 1 1
vlan vlan-id Specifies the number of the VLAN on which to set preempt mode. This
VLAN must be configured for IP routing as described in “Pre-Routing
Configuration Tasks” on page 24-1.
vrid Specifies a unique Virtual Router ID (VRID) associated with the routing
interface. Valid values are from 1 to 255.
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