Dell Force10 S25-01-GE-24V FTOS 8.4.2.7 Configuration Guide for E-Series TeraS - Page 180

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 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 on page 176. 2. On the local system, establish a session with the next hop of a static route. See page 180. 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 on page 176. Related configuration tasks • Change session parameters. See page 181. • Disable BFD for all static routes. See page 181. Establishing sessions for static routes Sessions are established for all neighbors that are the next hop of a static route. Figure 9-9. Enabling BFD for Static Routes Force10(config)# interface gigabitethernet 2/1 Force10(conf-if-gi-2/1)# ip address 2.2.2.2/24 Force10(conf-if-gi-2/1)# no shutdown Force10(conf-if-gi-2/1)# bfd neighbor 2.2.2.1 R1 Force10(config)# interface gigabitethernet 2/2 Force10(conf-if-gi-2/2)# ip address 2.2.3.1/24 Force10(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 Force10(config)# interface gigabitethernet 4/24 Force10(conf-if-gi-4/24)# ip address 2.2.2.1/24 Force10(conf-if-gi-4/24)# no shutdown Force10(config)# ip route 2.2.3.0/24 2.2.2.2 Force10(config)# ip route bfd Force10(config)# interface gigabitethernet 6/0 Force10(conf-if-gi-6/0)# ip address 2.2.3.2/24 Force10(conf-if-gi-6/0)# no shutdown fnC0039mp 180 | Bidirectional Forwarding Detection