Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 1046

www.dell.com | support.dell.com Assign Virtual IP addresses Virtual routers contain virtual IP addresses configured for that VRRP Group (VRID). A VRRP group does not transmit VRRP packets until you assign the Virtual IP address to the VRRP group. On E-Series ExaScale and TeraScale routers, VRRP is implemented as follows: • When VRF microcode is not loaded, VRRP supports an unlimited total number of VRRP groups on a router and up to 255 VRRP groups on an interface (refer to Table 60-1, "Recommended VRRP Advertise Intervals," in Virtual Router Redundancy Protocol (VRRP)). • When VRF microcode is loaded (refer to Load the VRF CAM Profile), VRRP supports an unlimited total number of VRRP groups on a router and up to 15 VRRP groups on an interface (refer to Table 60-1, "Recommended VRRP Advertise Intervals," in Virtual Router Redundancy Protocol (VRRP)). C-Series supports a total of 128 VRRP groups on the switch with varying number of maximum VRRP groups per interface (Table 60-1, "Recommended VRRP Advertise Intervals," in Virtual Router Redundancy Protocol (VRRP)). 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 60-1, "Recommended VRRP Advertise Intervals," in Virtual Router Redundancy Protocol (VRRP)). To activate a VRRP Group on an interface (so that VRRP group starts transmitting VRRP packets), configure at least one Virtual IP address in a VRRP group. The Virtual IP address is the IP address of the Virtual Router and does not require the IP address mask. You can configure up to 12 virtual IP addresses for a VRRP group (VRID). The following configuration rules apply to a virtual IP address: • A virtual IP address must be in the same subnet as the primary or secondary IP address configured on the interface. Although a single VRRP group can contain virtual IP addresses belonging to multiple IP subnets configured on the interface, Dell Force10 recommends that you configure virtual IP addresses belonging to the same IP subnet for any one VRRP group. For example, an interface (on which VRRP is to be enabled) contains a primary IP address of 50.1.1.1/24 and a secondary IP address of 60.1.1.1/24. The VRRP Group (VRID 1) must contain virtual addresses belonging to either subnet 50.1.1.0/24 or subnet 60.1.1.0/24, but not from both subnets (though FTOS allows the same). • If the virtual IP address and the interface's primary/secondary IP address are the same, the priority on that VRRP group is automatically set to 255. The interface then becomes the MASTER/OWNER router of the VRRP group and the interface's physical MAC address is changed to that of the owner VRRP group's MAC address. (You can also configure a priority for the group even if the group is owned. The configured priority is saved but only applied as the run-time priority when the last virtual address is removed from the group.) • If multiple VRRP groups are configured on an interface, only one of the VRRP groups can have the primary or secondary IP address of the interface. 1046 | Virtual Router Redundancy Protocol (VRRP)