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 11. Session State Changes
Important Points to Remember
• Dell Networking OS supports 128 sessions per stack unit at 200 minimum transmit and receive intervals with a multiplier of 3, and 64
sessions at 100 minimum transmit and receive intervals with a multiplier of 4.
• 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.
• Dell Networking OS supports only OSPF, OSPFv3, IS-IS, and BGP protocols as BFD clients.
Congure BFD
This section contains the following procedures.
• Congure BFD for Static Routes
• Congure BFD for OSPF
Bidirectional Forwarding Detection (BFD)
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