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FTOS Configuration Guide for the C-Series - Force10 Networks

FTOS Configuration Guide for the C-Series - Force10 Networks

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Figure 421 BFD State Machine<br />

Down<br />

current session state<br />

<strong>the</strong> packet received<br />

Important Points to Remember<br />

• BFD is supported on C-<strong>Series</strong> and E-<strong>Series</strong> TeraScale only.<br />

• <strong>FTOS</strong> supports a maximum of 100 sessions per BFD agent.<br />

• BFD must be enabled on both ends of a link.<br />

• Demand mode, au<strong>the</strong>ntication, and <strong>the</strong> Echo function are not supported.<br />

• BFD is not supported on multi-hop and virtual links.<br />

• Protocol Liveness is supported <strong>for</strong> routing protocols only.<br />

• <strong>FTOS</strong> supports only OSPF, ISIS, and VRRP as BFD clients.<br />

Configuring Bidirectional Forwarding Detection<br />

The remainder of this chapter is divided into <strong>the</strong> following sections:<br />

• Configuring BFD <strong>for</strong> Physical Ports on page 604<br />

• Configuring BFD <strong>for</strong> Static Routes on page 608<br />

• Configuring BFD <strong>for</strong> OSPF on page 610<br />

• Configuring BFD <strong>for</strong> IS-IS on page 613<br />

• Configuring BFD <strong>for</strong> VRRP on page 616<br />

• Configuring BFD <strong>for</strong> VLANs on page 619<br />

• Configuring BFD <strong>for</strong> Port-Channels on page 622<br />

• Configuring Protocol Liveness on page 624<br />

• TroubleShooting BFD on page 625<br />

Down<br />

Admin Down,<br />

Timer<br />

Down<br />

Up, Admin Down, Timer<br />

Init Up<br />

Init, Up<br />

<strong>FTOS</strong> <strong>Configuration</strong> <strong>Guide</strong>, version 7.7.1.0 603<br />

Init<br />

Admin Down,<br />

Down,<br />

Timer<br />

Up, Init<br />

fnC0037mp

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