Path Failure Detection

Path failure is detected in following conditions:

  1. Heartbeat failure: This condition occurs when the peer does not respond to the Heartbeat that is sent and also retires.

  2. Recovery Time stamp change in Heartbeat: This condition occurs when the Heartbeat Request or Heartbeat Response has a new larger value than the previously received value.

  3. Recovery Time stamp change in N4/Sx Association message: This condition occurs when the N4/Sx association message is received again from the peer with a new Recovery Time Stamp.