D-Link 3312SR Reference Manual - Page 230

DGS-3312SR Layer 3 Gigabit Switch config vrrp ipif Restrictions router priority. The VRRP Priority value may determine if a higher priority VRRP router overrides a lower priority VRRP router. A higher priority will increase the probability that this router will become the Master router of the group. A lower priority will increase the probability that this router will become the backup router. VRRP routers that are assigned the same priority value will elect the highest physical IP address as the Master router. The default value is 100. (The value of 255 is reserved for the router that owns the IP address associated with the virtual router and is therefore set automatically.) ipaddress - Enter the virtual IP address that will be assigned to the VRRP entry. This IP address is also the default gateway that will be statically assigned to end hosts and must be set for all routers that participate in this group. advertisement_interval - Enter a time interval value, in seconds, for sending VRRP message packets. This value must be consistent with all routers participating within the same VRRP group and is used to troubleshoot misconfigured routers. The default is 1 second. preempt [true | false] - 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. critical_ip - 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, a new Master will be elected from the backup routers participating in the VRRP group. If the connection to the backup fails, this backup router cannot assume the Master router role. 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. critical_ip_state [enable | disable] - This parameter is used to enable or disable the critical IP address entered above. The default is disable. Only administrator-level users can issue this command. Example usage: To configure a VRRP entry: DGS-3312SR:4#config vrrp ipif Trinity vrid 1 state enable priority 100 advertisement_interval 2 Command: config vrrp ipif Trinity vrid 1 state enable priority 100 advertisement_interval 2 Success. DGS-3312SR:4# 224