Virtual Router Redundancy Protocol (VRRP) | 1099VRRP BenefitsWith VRRP configured on a network, end-station connectivity to the network is not subject to a singlepoint-of-failure. End-station connections to the network are redundant and they are not dependent on IGPprotocols to converge or update routing tables.VRRP ImplementationE-Series supports an unlimited total number of VRRP groups on the switch while supporting up to 255VRRP groups on a single interface (Table 55-1).C-Series supports a total of 128 VRRP groups on the switch with varying number of maximum VRRPgroups per interface (Table 55-1).S25/S50 supports a total of 120 VRRP groups on a switch with FTOS or a total of 20 VRRP groups whenusing SFTOS. The S-Series supports varying number of maximum VRRP groups per interface(Table 55-1).The S55 and S60 support a total of 2000 VRRP groups on a switch and up to 100 VRRP groups perinterface (Table 55-2).The S4810 supports a total of 2000 VRRP groups on a switch and 512 VRRP groups per interface(Table 55-2).Within a single VRRP group, up to 12 virtual IP addresses are supported. Virtual IP addresses can belongto the primary or secondary IP address’ subnet configured on the interface. You can ping all the virtual IPaddresses configured on the Master VRRP router from anywhere in the local subnet.Note: If you have a stacked S4810 system, Dell Force10 recommends that you configure themac-address-table station-move refresh-arp command on the stack to prevent VRRP from being affected incase of a stack system failover.
