Patent ID: 9654337
Date: 2017-05-16
CPC Classifications: H04L,Y02D

Claim:
1. A method supporting a distributed resilient network interconnect (DRNI) in a link aggregation group, wherein the network device and a neighbor network device are included in a first portal of the link aggregation group, wherein the first portal is coupled with a second portal including two or more remote network devices, one of which being a partner network device of the network device, wherein each portal is assigned a portal priority, and wherein the network device is communicatively coupled to the neighbor network device via an intra-portal port (IPP), the method comprising: determining that the network device no longer communicates with the neighbor network device; sending a port conversation mask type/length/value (TLV) containing a portal state indicator, referred to as portal system isolated (PSI), wherein the PSI indicates a status of no communication; receiving a link aggregation control protocol data unit (LACPDU) from the partner network device; determining that the partner network device no longer communicates with the partner network device's neighbor network device based on the LACPDU; determining that the first portal has a higher portal priority than the second portal upon determining that an identifier value of the first portal is lower than that of the second portal; determining that the network device has a lower network device priority than the neighbor network device, wherein each network device is assigned a network device priority; and halting transmitting and receiving frames of the link aggregation group at the network device following the four determinations above.