D-Link DWS-3160-24TC DWS-3160 Series Web UI Reference Guide - Page 135

DWS-3160 Series Gigabit Ethernet Unified Switch Web UI Reference Guide Interval (1-255) Preempt Mode Use the drop-down menu to 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. If True is selected, and the backup router's priority is higher than the Master's priority, the backup router will become the Master router. If False is selected, the backup router with higher priority will not become the Master router. This setting must be consistent with all routers participating within the same VRRP group. Critical IP Address Enter an IP address of the physical device that provides 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 chosen from the backup routers in the same VRRP group. Different critical IP addresses may be assigned to different routers in the same VRRP group, and can therefore define multiple routes to the Internet or other critical network connections. Checking Critical IP Use the drop-down menu to enable or disable checking the status of a critical IP address. Click the Apply button to accept the changes made. Click the View button to see the detail information of the corresponding entry. Click the Edit button to update the information of the corresponding entry. Click the Delete button to delete the corresponding entry. Enter a page number and click the Go button to navigate to a specific page when multiple pages exist. After clicking the Edit button, the following page will appear: Figure 8-7 VRRP Virtual Router Settings - Edit window The fields that can be configured are described below: Parameter Description Interface Name VRID (1-255) IP Address State Priority (1-254) Enter the IP interface name used to create a VRRP entry. Enter the ID of the virtual router. All the routers participating in this group must be assigned the same VRID value. This value must be different from other VRRP groups set on the Switch. Enter the virtual router's IP address. 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. Use the drop-down menu to enable or disable the state of the virtual router function of the interface. Enter the priority to be used for the Virtual Router Master election process. The VRRP Priority value may determine if a higher priority VRRP router overrides a lower priority VRRP router. A higher priority increases the possibility to become the Master router of the group. A lower priority increases the possibility to become the backup router. For VRRP routers with the same priority value, the VRRP router with the highest physical IP address is chosen to be the Master router. 130