Dell Force10 Z9000 FTOS Configuration Guide for Z9000 System - Page 134

www.dell.com | support.dell.com To re-enable BFD on an interface: Step 1 Task Enable BFD on an interface. Command Syntax bfd enable Command Mode INTERFACE Configuring BFD for Static Routes Configuring BFD for Static Routes is supported on C-Series and E-Series only. BFD gives systems a link state detection mechanism for static routes. With BFD, systems are notified to remove static routes from the routing table as soon as the link state change occurs, rather than having to wait until packets fail to reach their next hop. Configuring BFD for static routes is a three-step process: 1. Enable BFD globally. See Enabling BFD globally. 2. On the local system, establish a session with the next hop of a static route. 3. On the remote system, establish a session with the physical port that is the origin of the static route. See Establishing a session on physical ports. Related configuration tasks • Change session parameters. • Disable BFD for all static routes. Establishing sessions for static routes Sessions are established for all neighbors that are the next hop of a static route. Figure 7-9. Enabling BFD for Static Routes FTOS(config)# interface gigabitethernet 2/1 FTOS(conf-if-gi-2/1)# ip address 2.2.2.2/24 FTOS(conf-if-gi-2/1)# no shutdown FTOS(conf-if-gi-2/1)# bfd neighbor 2.2.2.1 R1 FTOS(config)# interface gigabitethernet 2/2 FTOS(conf-if-gi-2/2)# ip address 2.2.3.1/24 FTOS(conf-if-gi-2/2)# no shutdown R2 R3 4/24 2.2.2.1/24 2/1 2.2.2.2/24 2/2 2.2.3.1/24 6/0 2.2.3.2/24 FTOS(config)# interface gigabitethernet 4/24 FTOS(conf-if-gi-4/24)# ip address 2.2.2.1/24 FTOS(conf-if-gi-4/24)# no shutdown FTOS(config)# ip route 2.2.3.0/24 2.2.2.2 FTOS(config)# ip route bfd FTOS(config)# interface gigabitethernet 6/0 FTOS(conf-if-gi-6/0)# ip address 2.2.3.2/24 FTOS(conf-if-gi-6/0)# no shutdown 134 | Bidirectional Forwarding Detection (BFD)