D-Link DGS-3600 Series User Manual page 238

Preempt Mode
Critical IP Address
Checking Critical IP
Click Apply to implement changes made.
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xStack DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch
This entry will determine the behavior of backup routers within the VRRP group by
controlling whether a higher priority backup router will preempt a lower priority Master router.
A True entry, along with having the backup router's priority set higher than the masters
priority, will set the backup router as the Master router. A False entry will disable the backup
router from becoming the Master router. This setting must be consistent with all routers
participating within the same VRRP group. The default setting is True.
Enter the IP address of the physical device that will provide the most direct route to the
Internet or other critical network connections from this virtual router. This must be a real IP
address of a real device on the network. If the connection from the virtual router to this IP
address fails, the virtual router will automatically disabled. A new Master will be elected from
the backup routers participating in the VRRP group. Different critical IP addresses may be
assigned to different routers participating in the VRRP group, and can therefore define
multiple routes to the Internet or other critical network connections.
Use the pull-down menu to enable or disable the Critical IP address entered above.
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