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Chapter 5: VRRP Configuration Guide
The following table shows the priorities for each virtual router configured on Router R3:
Virtual Router
– IP address=10.0.0.1/16
VRID=1
– IP address=10.0.0.2/16
VRID=2
– IP address=10.0.0.3/16
VRID=3
Note:
Since 100 is the default priority, lines 8 and 9, which set the priority to 100, are
actually unnecessary. They are included for illustration purposes only.
Additional Configuration
This section covers settings you can modify in a VRRP configuration, including Backup
priority, advertisement interval, pre-empt mode, and authentication key.
Setting the Backup Priority
As described in
router takes over when the Master router goes down by setting the priority for the Backup
routers. To set the priority for a Backup router, enter the following command in Configure
mode:
Set the Backup priority for a
virtual router.
The priority can be between 1 (lowest) and 254. The default is 100. The priority for the IP
address owner is 255 and cannot be changed.
Setting the Advertisement Interval
The VRRP Master router sends periodic advertisement messages to let the other routers
know that the Master is up and running. By default, advertisement messages are sent once
each second. To change the VRRP advertisement interval, enter the following command in
Configure mode:
Set the Advertisement interval
for a virtual router.
72
"Multi-Backup Configuration" on page
ip-redundancy set vrrp
ip-redundancy set vrrp
Default Priority
100
100
255 (address owner)
68, you can specify which Backup
<interface>
priority
<interface>
adv-interval
Internet Appliance User Reference Manual
Configured Priority
100 (see line 8)
100 (see line 9)
255 (address owner)
<vrid>
interface
<number>
<vrid>
interface
<seconds>
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