Reference Guide

158 | Bidirectional Forwarding Detection (BFD)

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Configuring BFD for OSPF is a two-step process:

1. Enabling BFD globally.

2. Establishing sessions with OSPF neighbors.

Related configuration tasks

• Changing OSPF session parameters.

• Disabling BFD for OSPF.

Establishing sessions with OSPF neighbors

BFD sessions can be established with all OSPF neighbors at once or sessions can be established with all

neighbors out of a specific interface. Sessions are only established when the OSPF adjacency is in the full

state.

To establish BFD with all OSPF neighbors:

To establish BFD for all OSPF neighbors on a single interface:

Step Task Command Syntax Command Mode

1 Establish sessions with all OSPF neighbors. bfd all-neighbors ROUTER-OSPF

Step Task Command Syntax Command Mode

1 Establish sessions with all OSPF neighbors on a

single interface.

ip ospf bfd all-neighbors INTERFACE

2.2.2.1/24

2.2.3.1/24

4/24

2/1

2/2

6/0

AREA 0

AREA 1

6/1

1/1

FTOS(conf-if-gi-4/24)# ip address 2.2.2.1/24

FTOS(conf-if-gi-4/24)# no shutdown

FTOS(conf-if-gi-4/24)# exit

FTOS(config)# router ospf 1

FTOS(config-router_ospf)# network 2.2.2.0/24 area 0