What are the functions and typical scenarios of the association between BFD session status and interface status

For S series switches, you can run the process-interface-status command in the BFD session view to enable the association between the BFD status and the interface status. When the BFD session status changes, run the display this interface command in the interface view. If the command output shows that Line protocol current state is UP (BFD Status Down), the routing management module withdraws the host routes and network segment routes on the interface.

Application scenario: The association between the BFD status and the interface status are often used when a Layer 2 device or data transmission device exists between two Layer 3 devices, or when a single fiber failure occurs.

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