1130 | Virtual Router Redundancy Protocol (VRRP)w w w . d e l l . c o m | s u p p o r t . d e l l . c o mThe recommendations in Table 58-1 may vary depending on various factors like ARP broadcasts, IPbroadcasts, or STP before changing the advertisement interval. When the number of packets processed byRP2/CP/FP processor increases or decreases based on the dynamics of the network, the advertisementintervals in may increase or decrease accordingly.VRRP version 3VRRP version 3 defines VRRP for IPv6. The vrrp-ipv6-group command is used to create IPv6 VRRPgroups, and is similar to the vrrp-group command, which creates an IPv4 VRRP group and moves you fromINTERFACE mode to a group-specific VRRP command sub-mode.In the VRRP mode, all VRRP commands are supported for IPv4 and IPv6, except for authentication-typewhich is not supported for IPv6. Also, the following EXEC commands are different for IPv4 and IPv6:• clear:• IPv4: clear counters vrrp• IPv6: clear counters vrrp ipv6• debug:• IPv4: debug vrrp• IPv6: debug vrrp ipv6• show:• IPv4: show vrrp• IPv6: show vrrp ipv6Between 1000 and 1200 7 seconds 7 seconds 7 seconds 512 255 100 100Between 1200 and 1500 8 seconds 8 seconds 8 seconds 512 255 120 120Note: 1500 VRRP groups are supported in FTOS Release 6.3.1.0 and later.CAUTION: Increasing the advertisement interval increases the VRRP Master dead interval, resulting in anincreased failover time for Master/Backup election. Take extra caution when increasing the advertisementinterval, as the increased dead interval may cause packets to be dropped during that switch-over time.Table 58-1. Recommended VRRP Advertise IntervalsTotal VRRP GroupsRecommended Advertise Interval Groups/InterfaceE-Series C-Series S-SeriesE-SeriesExaScaleE-SeriesTeraScale C-Series S-Series
