Method and system to synchronize with a neighbor in a group of aggregation of interconnecting links of distributed resilient networks (DRNI)

摘要

A method that supports an interconnection of distributed resilient networks (DRNI) in a link aggregation group on a network device, in which the network device and a neighboring network device are included in a first portal of the aggregation group of links, in which the first portal is coupled by links of the link aggregation group with a second portal that includes one or more remote network devices, and in which the network device is communicatively coupled to the neighboring network device by means of a intraportal port (IPP), using an intraportal link (IPL), the method comprising: initializing (3302) the network device to operate the distributed resilient control protocol (DRCP) in the IPP coupled to the neighboring network device using the IPL, including initialization configure default parameter values for the neighboring network device in the IPP to be operational parameters of the network device p provided by an administrator of the first portal; verify (3304) that the DRCP is enabled in the IPP, including checking the determination of a variable that indicates that the IPP is operating the DRCP; Entering (3306) an expired state in the network device, in which the network device performs: the configuration of a status parameter of the distributed retransmission control protocol (DRCP) of the network device as expired; the configuration of the IPP activity of the neighboring network device to be inactive, and the configuration of a timer to receive a distributed relay control protocol (DRCPDU) data unit after receiving (3307) a DRCPDU before it expires the timer, including the DRCPDU status information of the neighboring network device; determine (3308) that the received DRCPDU is associated with the first portal; determine (3310), if it was determined that the received DRCPDU is associated with the first portal, that the received DRCPDU is compatible with the network device, the determination comprising determining that the administratively configured values associated with the first portal are consistent with that of the DRCPDU received; and record (3312), if it was determined that the received DRCPDU is compatible with the network device, status information of the neighboring network device included in the received DRCPDU as operational variables of status of the neighboring network device in the network device, including the status information of the neighboring network device DRCP variables for the IPP.