Dell S6000 FTOS 9.0(2.0) Configuration Guide for the System - Page 895

For more detailed information on VRRP, refer to RFC 2338, Virtual Router Redundancy Protocol. VRRP Benefits With VRRP configured on a network, end-station connectivity to the network is not subject to a single point-of-failure. End-station connections to the network are redundant and they are not dependent on IGP protocols to converge or update routing tables. VRRP Implementation S-Series supports a total of 120 VRRP groups on a switch with FTOS or a total of 20 VRRP groups when using SFTOS. The S-Series supports varying number of maximum VRRP groups per interface (Table 51-1). Z-Series supports a total of 255 VRRP groups on a switch. The total number of VRRP groups per system should be less than 512. Note: The Layer 2 CAM is limited to 512 Local Destination Addresses, which limits the number of VRRP groups that can be supported. This number may be further reduced depending on the number of Layer 3 VLANs configured in the system as the Layer 3 VLANs also use Local Destination Addresses. Within a single VRRP group, up to 12 virtual IP addresses are supported. Virtual IP addresses can belong to the primary or secondary IP address' subnet configured on the interface. You can ping all the virtual IP addresses configured on the Master VRRP router from anywhere in the local subnet. Table 51-1. Recommended VRRP Advertise Intervals Recommended Advertise Interval Groups/Interface Total VRRP Groups S-Series Less than 250 1 second Between 250 and 450 2 - 3 seconds Between 450 and 600 3 - 4 seconds Between 600 and 800 4 seconds Between 800 and 1000 5 seconds Z-Serie S-Serie Z-Serie s s s 1 second 12 12 2 - 3 24 24 seconds 3 - 4 36 36 seconds 4 48 48 seconds 5 84 84 seconds Virtual Router Redundancy Protocol (VRRP) | 873