BGP with BFD

Routing protocols have mechanism to detect link failures as well with HELLO like mechanism but is not good enough for c

BFD runs independent of the routing protocol.

BFD had two modes of operation

  • Asynchronous Mode : The Asynchronous mode is like the Hello and Holddown timer , when BFD does not receive some of them the session is teared.

ECHO mode is on by default. ECHO packets are encapuslated un UDP .