Reference Guide

system sends a final response indicating the state change. After this, periodic control packets are
exchanged.
Figure 14. BFD Three-Way Handshake State Changes
Session State Changes
The following illustration shows how the session state on a system changes based on the status
notification it receives from the remote system. For example, if a session on a system is down and it
Bidirectional Forwarding Detection (BFD)
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