Patent ID: 9258234
Filing Date: 2016-02-09
CPC Classification: H04L

Claim Text:
1. A method comprising: receiving, by a network device, bidirectional forwarding detection (BFD) packets for a BFD session for monitoring connectivity with a peer network device; determining, by the network device, a weighted moving average in which more recent timing measurements of a series of timing measurements are weighted with greater weights, respectively, relative to earlier timing measurements of the series of timing measurement, the series of timing measurements based on respective receipt times of the BFD packets; adjusting, by the network device and based on the weighted moving average, a detection multiplier that specifies a multiple of a negotiated transmission time interval for the BFD session to define, at least in part, a session detection time for the BFD session; and detecting, by the network device and based at least on a failure to receive a subsequent BFD packet for the BFD session within the session detection time for the BFD session, a failure of connectivity with the peer network device.