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no priority
Function: Configure VRRP priority; the “no priority” command restores to its default
value 100. IP Owner’s VRRP priority is always 255.
Parameter: <value> is the VRRP priority, valid range is 1 to 255.
Command mode: VRRP Mode
Default: The VRRP priority for the backup routers (or the layer 3 switches) is 100 by
default, whereas the VRRP priority for the master router (or the layer 3 switch) is 255 by
default.
Usage Guide: The priority of the routers in the VRRP backup group is used to elect the
master router. When the router is set to the master virtual IP address, the
priority is 255 which can’t be changed. During the election, when two or more
then two routers have the same VRRP priority, the router with the greatest IP
address of the VLAN interface is elected as the master router.
Example: Set VRRP priority to 150
Switch(Config-Router-Vrrp)# priority 150
17.2.2.10 advertisement-interval
Command: advertisement-interval <adver_interval>
no advertisement-interval
Function: Configure VRRP timer value; the “no advertisement-interval” command
restores the default setting.
Parameter: <adver_interva> is the interval of sending VRRP message in seconds, valid
range is 1 to 10.
Command mode: VRRP Mode
Default: <adver_interva> is 1 second by default.
Usage Guide: The master router in the VRRP standby group sends regularly the VRRP
messages to inform the group members that it is working properly. This interval
of sending VRRP messages is adver_interval. If the backup routers don’t
receive the VRRP messages for a certain period of time
(master_down_interval), they consider that the master router is down. The
backup routers will elect the new master router to forward the traffic.
Users can modify the interval of sending the VRRP messages. The routers in
the same VRRP standby group should be set to the same value. For the backup
routers, the value of master_down_interval should be three times of that of
adver_interval. If the network traffic is significant or if the VRRP routers have
different values for the timer, the master_down_interval may be overtime and it
triggers the election of the new master router. In order to avoid this situation,