Dell Force10 S4820T S4820T Configuration Guide - Page 1046

www.dell.com | support.dell.com Table 54-1. Recommended VRRP Advertise Intervals Total VRRP Groups Between 1000 and 1200 Between 1200 and 1500 Recommended Advertise Interval E-Series C-Series S-Series (S25, S50) 7 seconds 8 seconds 7 seconds 8 seconds 7 seconds 8 seconds Groups/Interface E-Series E-Series S-Series ExaScale TeraScale C-Series (S25, S50) 512 255 100 100 512 255 120 120 Table 54-2. Recommended VRRP Advertise Intervals on the S4810, S4820T, S55, S60 Total VRRP Groups Less than 250 Between 250 and 450 Between 450 and 600 Between 600 and 800 Between 800 and 1000 Between 1000 and 1200 Between 1200 and 1500 Recommended Advertise Interval S4810/S4820T S55 S60 1 second 2 - 3 seconds 3 - 4 seconds 4 seconds 5 seconds 7 seconds 8 seconds 1 second 2 - 3 seconds 3 - 4 seconds 4 seconds 5 seconds 7 seconds 8 seconds 1 second 2 - 3 seconds 3 - 4 seconds 4 seconds 5 seconds 7 seconds 8 seconds Groups/Interface S4810/S4820T S55 512 100 512 100 512 100 512 100 512 100 512 100 512 100 S60 100 100 100 100 100 100 100 The recommendations in Table 54-1 may vary depending on various factors like ARP broadcasts, IP broadcasts, or STP before changing the advertisement interval. When the number of packets processed by RP2/CP/FP processor increases or decreases based on the dynamics of the network, the advertisement intervals in may increase or decrease accordingly. CAUTION: Increasing the advertisement interval increases the VRRP Master dead interval, resulting in an increased failover time for Master/Backup election. Take extra caution when increasing the advertisement interval, as the increased dead interval may cause packets to be dropped during that switch-over time. VRRP Configuration By default, VRRP is not configured. Configuration Task List for VRRP The following list specifies the configuration tasks for VRRP: • Create a Virtual Router (mandatory) • Assign Virtual IP addresses (mandatory) • Set VRRP Group (Virtual Router) Priority (optional) • Configure VRRP Authentication (optional) 1046 | Virtual Router Redundancy Protocol (VRRP)