D-Link DGS-3620-28TC-SI Product Manual - Page 240

xStack® DGS-3620 Series Managed Switch Web UI Reference Guide Critical IP Address Specifies an 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. IP Address Specifies the virtual router's IP address used. 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 Specifies the time interval used between sending advertisement messages. (1-255) Checking Critical IP Specifies the state of checking the status (active or inactive) of a critical IP address. Options to choose from are Enabled and Disabled. Click the Add button to add a new entry. Click the Delete All button to remove all the entries listed. Click the Delete button to remove a specific entry listed. Click the Edit button to re-configure a specific entry listed. After clicking the Edit button, the following page will be displayed. Figure 5-111 VRRP Virtual Router Settings Window The fields that can be configured are described below: Parameter Description IP Address Specifies the virtual router's IP address used. 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. Priority Specifies the priority to be used for the Virtual Router Master election process Preempt Mode 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 master's 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. Checking Critical IP Specifies the state of checking the status (active or inactive) of a critical IP address. Options to choose from are Enabled and Disabled. 230