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Synchronizing peer nodes of a multi-chassis switching cluster

  • US 10,447,778 B2
  • Filed: 04/17/2015
  • Issued: 10/15/2019
  • Est. Priority Date: 04/17/2015
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • generating a data sequence number associated with a data item, wherein the data item relates to a network update to a plurality of peer nodes;

    sending, using multicast, a message to the plurality of peer nodes, wherein the message comprises the network update, the data sequence number, and peer data sequence numbers, wherein each peer data sequence number is associated with a peer node of the plurality of peer nodes, and wherein the message is an update message and an acknowledgement message to the plurality of peer nodes;

    determining, for each peer node of the plurality of peer nodes, whether an acknowledgment has been received by reading the peer data sequence numbers within the message, wherein the acknowledgment indicates a peer node that sent the acknowledgment and indicates the data sequence number; and

    resending, using unicast, the network update and the data sequence number to each peer node of the plurality of peer nodes for which an acknowledgement is determined to not have been received.

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