Alcatel-Lucent 6850-48 ネットワークガイド

Configuring BFD

BFD Application Example

OmniSwitch AOS Release 6 Network Configuration Guide

page 30-25

This section provides an example network configuration in which BFD is encapsulated within the OSPF 
protocol running on the network. In addition, a tutorial is also included that provides steps on how to 
configure the example network topology using the Command Line Interface (CLI).

The diagram below represents a simple OSPF network consisting of three router switches. For all three 
routers, a global BFD configuration is applied to all interfaces. BFD is also registered with the OSPF rout-
ing protocol, which will receive forwarding path detection failure messages from BFD. 

Whenever there is any change to the interface/neighbor list or interface/neighbor state, OSPF immediately 
informs BFD about the changes. BFD then updates its database accordingly and informs OSPF for its fast-
est convergence.

The following steps are used to configure the example BFD-enabled OSPF network as shown in the 
diagram above.

The first step is to create the VLANs on each router, add an IP interface to the VLAN, assign a port to the 
VLAN, and assign a router identification number to the routers. For the backbone connection, the network 
design in this case uses slot 2, port 1 as the egress port and slot 2, port 2 as ingress port on each router. 
Router 1 connects to Router 2, Router 2 connects to Router 3, and Router 3 connects to Router 1.