Patent ID: 9094174
Filing Date: 2015-07-28
Classification: H04L

Abstract:
1. A method of transmitting data, comprising: receiving, from a network, data packets within a first bonding engine that drops packets having a same frame check sequence (FCS) format as packets transmitted by the first bonding engine; fragmenting the data packets into a plurality of packet fragments for communication across a bonded group of subscriber lines; negotiating, by the first bonding engine and with a second bonding engine, that the second bonding engine to which the received data packets will be transmitted decodes packets having the same FCS format that the first bonding engine drops; and modifying, by the first bonding engine, a frame check sequence (FCS) of the received data packets that are transmitted to the second bonding engine to prevent the received data packets from propagating towards the network during a loopback condition, the FCS of the received data packets being modified to have the same FCS format that is rejected by the first bonding engine; disabling an offending subscriber line in the bonded group after determining the offending subscriber line using a bonding aggregation control protocol (BACP) loopback detection; and transmitting at least one additional bit in the BACP protocol data unit (PDU) indicating a status of whether packets transmitted by the first bonding engine were sent with inverted FCS.