Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 1036

decreases based on the dynamics of the network, the advertisement intervals 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 caution when increasing the advertisement interval, as the increased dead interval may cause packets to be dropped during that switch-over time. Table 77. Recommended VRRP Advertise Intervals on the S4820T Recommended Advertise Interval Total VRRP Groups S4820T Groups/Interface S4820T Less than 250 1 second 12 Between 250 and 450 2-3 seconds 24 Between 450 and 600 3-4 seconds 36 Between 600 and 800 4 seconds 48 Between 800 and 1000 5 seconds 84 Between 1000 and 1200 7 seconds 100 Between 1200 and 1500 8 seconds 120 VRRP Configuration By default, VRRP is not configured. Configuration Task List The following list specifies the configuration tasks for VRRP. • Creating a Virtual Router (mandatory) • Configuring the VRRP Version for an IPv4 Group (optional) • Assign Virtual IP Addresses mandatory) • Setting VRRP Group (Virtual Router) Priority (optional) • Configuring VRRP Authentication (optional) • Disabling Preempt (optional) • Changing the Advertisement Interval (optional) • Track an Interface or Object • Setting VRRP Initialization Delay For a complete listing of all commands related to VRRP, refer to Dell Networking OS Command Line Reference Guide. Creating a Virtual Router To enable VRRP, create a virtual router. In Dell Networking Operating System (OS), the virtual router identifier (VRID) identifies a VRRP group. To enable or delete a virtual router, use the following commands. 1036 Virtual Router Redundancy Protocol (VRRP)