Operation Manual – VRRPH3C S3610&S5510 Series Ethernet Switches Chapter 1 VRRP Configuration1-3group elect a new gateway to undertake the responsibility of the failed switch, thusensuring that the hosts in the network segment can communicate with the externalnetworks uninterruptedly.Host AHost BHost CSwitch ASwitch BSwitch CVirtual routerNetworkFigure 1-2 Network diagram for VRRPAs shown in Figure 1-2, Switch A, Switch B, and Switch C form a virtual router, whichhas its own IP address. Hosts on the Ethernet use the virtual router as the defaultgateway.The switch with the highest priority of the three switches is elected as the master switchto act as the gateway, and the other two are backup switches.Caution:z The IP address of the virtual router can be either an unused IP address on thesegment where the standby group resides or the IP address of an interface on aswitch in the standby group. In the latter case, the switch is called the IP addressowner.z In a VRRP standby group, there can only be one IP address owner.I. VRRP priorityVRRP determines the role (master or backup) of each switch in the standby group bypriority. A switch with a higher priority has more opportunity to become the master.VRRP priority is in the range of 0 to 255. A bigger number means a higher priority.Priorities 1 to 254 are configurable. Priority 0 is reserved for special uses and priority255 for the IP address owner. When a switch acts as the IP address owner, its priority
