Chapter 55 VRRP
XGS4600 Series User’s Guide
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55.3.2.1 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.
55.3.2.2 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.
55.3.2.3 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.
55.3.3 Configuring VRRP Parameters
After you set up an IP interface, configure the VRRP parameters in the VRRP Configuration screen.
Figure 407 IP Application > VRRP Configuration: VRRP Parameters
The following table describes the labels in this screen.
Table 244 IP Application > VRRP Configuration: VRRP Parameters
LABEL DESCRIPTION
Active Select this option to enable this VRRP entry.
Name Enter a descriptive name (up to 32 printable ASCII characters) for identification purposes.
Network Select an IP domain to which this VRRP entry applies.
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