Chapter 44 VRRP
GS3700/XGS3700 Series User’s Guide
433
44.3.2 VRRP Parameters
This section describes the VRRP parameters.
44.3.2.1 Advertisement Interval
The master router sends out Hello messages to let the other backup routers know that it is still up
and running. The time interval between sending the Hello messages is the advertisement interval.
By default, a Hello message is sent out every second.
If the backup routers do not receive a Hello message from the master router after this interval
expires, it is assumed that the master router is down. Then the backup router with the highest
priority becomes the master router.
Note: All routers participating in the virtual router must use the same advertisement
interval.
44.3.2.2 Priority
Configure the priority level (1 to 254) to set which backup router to take over in case the master
router goes down. The backup router with the highest priority will take over. The priority of the
VRRP router that owns the IP address(es) associated with the virtual router is 255.
44.3.2.3 Preempt Mode
If the master router is unavailable, a backup router assumes the role of the master router. However,
when another backup router with a higher priority joins the network, it will preempt the lower
priority backup router that is the master. Disable preempt mode to prevent this from happening.
By default, a layer 3 device with the same IP address as the virtual router will become the master
router regardless of the preempt mode.
44.3.3 Configuring VRRP Parameters
After you set up an IP interface, configure the VRRP parameters in the VRRP Configuration
screen.
Figure 322 IP Application > VRRP Configuration: VRRP Parameters
To Next Page
Loading...
