One Comment on “Which two modes of operation does BFD support?”

1. Scooby says:

   November 27, 2015 at 4:54 pm

   A session may operate in one of two modes: asynchronous mode and demand mode. In
   asynchronous mode, both endpoints periodically send Hello packets to each other. If a number of
   those packets are not received, the session is considered down.
   In demand mode, no Hello packets are exchanged after the session is established; it is assumed
   that the endpoints have another way to verify connectivity to each other, perhaps on the
   underlying physical layer. However, either host may still send Hello packets if needed.
   Reference: http://en.wikipedia.org/wiki/Bidirectional_Forwarding_Detection

   
   
   
   1

   
   
   
   0