Dell Force10 S4820T S4820T Configuration Guide - Page 172

www.dell.com | support.dell.com VIRTUAL R1: BACKUP 4/25 IP Address: 2.2.5.4 FTOS(config-if-range-gi-4/25)# ip address 2.2.5.1/24 FTOS(config-if-range-gi-4/25)# no shutdown FTOS(config-if-range-gi-4/25)# vrrp-group 1 FTOS(config-if-range-gi-4/25)# virtual-address 2.2.5.4 FTOS(config-if-range-gi-4/25)# vrrp bfd all-neighbors FTOS(config-if-range-gi-4/25)# vrrp bfd neighbor 2.2.5.2 IP Address: 2.2.5.3 Gateway: 2.2.5.1 R2: MASTER 2/3 FTOS(conf-if-gi-2/3)#ip address 2.2.5.2/24 FTOS(config-if-gi-2/3)# no shutdown FTOS(config-if-range-gi-4/25)# vrrp-group 1 FTOS(config-if-range-gi-4/25)# virtual-address 2.2.5.4 FTOS(config-if-range-gi-4/25)# vrrp bfd all-neighbors FTOS(config-if-range-gi-4/25)# vrrp bfd neighbor 2.2.5.1 To establish sessions with all VRRP neighbors: fnC0042mp Step 1 Task Establish sessions with all VRRP neighbors. Command Syntax vrrp bfd all-neighbors Command Mode INTERFACE Establishing VRRP sessions on VRRP neighbors The master router does not care about the state of the backup router, so it does not participate in any VRRP BFD sessions. Therefore, VRRP BFD sessions on the backup router cannot change to the UP state. The master router must be configured to establish an individual VRRP session the backup router. To establish a session with a particular VRRP neighbor: Step 1 Task Establish a session with a particular VRRP neighbor. Command Syntax vrrp bfd neighbor ip-address Command Mode INTERFACE View the established sessions using the command show bfd neighbors, as shown in the example below. R1(conf-if-gi-4/25)#vrrp bfd all-neighbors R1(conf-if-gi-4/25)#do show bfd neighbor * - Active session role Ad Dn - Admin Down 172 | Bidirectional Forwarding Detection (BFD)