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Advertisement of adjacency segment identifiers

  • US 9,565,160 B2
  • Filed: 03/11/2014
  • Issued: 02/07/2017
  • Est. Priority Date: 03/11/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • identifying an adjacency segment between a first node and a second node, wherein the identifying is performed by the first node;

    assigning an adjacency segment identifier (ID) to the adjacency segment, whereinthe assigning is performed by the first node, andthe adjacency segment ID is locally significant to the first node;

    sending an Intermediate-System-to-Intermediate-System (IS-IS) hello (IIH) message to a third node, whereinthe first node and the third node are both on a local area network (LAN),the sending is performed by the first node,the IIH message comprises the adjacency segment ID, andthe third node is configured to aggregate a plurality of adjacency segment IDs generated by a set of nodes;

    determining whether the first node comprises a spoke node or a hub node; and

    in response to determining that the first node comprises the spoke node;

    assigning, by the first node, a respective adjacency segment ID for an adjacency with a hub node that is coupled to the LAN; and

    inhibiting assignment of any adjacency segment ID for an adjacency with an additional spoke node coupled to the LAN.

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