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Multi-protocol label switching rings

  • US 9,729,455 B2
  • Filed: 06/30/2014
  • Issued: 08/08/2017
  • Est. Priority Date: 06/30/2014
  • Status: Active Grant
First Claim
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1. A method comprising:

  • assigning a ring identifier to a multi-protocol label switching (MPLS) ring and assigning an index to each of a plurality of routers that form the MPLS ring in a ring network, wherein the index indicates a position around the MPLS ring for the respective router;

    outputting, from each of the routers, messages announcing membership in the MPLS ring and the indexed position around the ring for the respective router;

    selecting, at each of the routers, a downstream neighbor and an upstream neighbor for the MPLS ring based on the index of each of the routers;

    establishing, with the plurality of routers, the MPLS ring having a plurality of ring label switched paths (LSPs), each of the ring LSPs configured to transport MPLS packets around the ring network to a different one of the routers operating as an egress router for the respective ring LSP; and

    forwarding network traffic as MPLS packets around the ring network in accordance with the ring LSPs.

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