Patent ID: 8774045
Filing Date: 2014-07-08
Classification: H04L

Abstract:
1. A packet loss detecting method, comprising: generating, by a first router, at a first time point tp, a first packet loss detection packet corresponding to a class of service (CoS) value of a packet in a tunnel, wherein the CoS value is set in the first packet loss detection packet; recording a first sent packet count value at the first time point tp TxFCf[tp]; sending the first packet loss detection packet to a second router at a peer end; receiving, by the first router, a first packet loss response packet returned by the second router, wherein the first packet loss response packet carries a second received packet count value RxFCf[tp]; generating, by the first router, at a next time point tc, a second packet loss detection packet corresponding to the CoS value, wherein the CoS value is set in the second packet loss detection packet; recording the number of sent service flow packets as a third sent packet count value TxFCf[tc]; sending the second packet loss detection packet to the second router at the peer end; receiving, by the first router, a second packet loss response packet returned by the second router, wherein the second packet loss response packet carries a fourth received packet count value RxFCf[tc]; and measuring, by the first router, a packet loss value corresponding to the CoS value, according to the following formula: