Service Manual

Session State Changes
The following illustration shows how the session state on a system changes based on the status notication it receives from the
remote system. For example, if a session on a system is down and it receives a Down status notication from the remote system, the
session state on the local system changes to Init.
Figure 10. Session State Changes
Important Points to Remember
•
• Enable BFD on both ends of a link.
• Demand mode, authentication, and the Echo function are not supported.
• BFD is not supported on multi-hop and virtual links.
• Protocol Liveness is supported for routing protocols only.
Congure BFD
This section contains the following procedures.
• Conguring BFD for Physical Ports
• Congure BFD for Static Routes
• Congure BFD for OSPF
• Congure BFD for OSPFv3
• Congure BFD for IS-IS
• Congure BFD for BGP
Bidirectional Forwarding Detection (BFD)
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