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Register clustering in a SIP-based network

  • US 8,234,390 B2
  • Filed: 05/13/2011
  • Issued: 07/31/2012
  • Est. Priority Date: 07/25/2007
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • identifying, using at least one processor device, a change to a first plurality of proxies resulting in a different second plurality of proxies, each proxy in the first plurality mapped to one or more respective hash keys of a particular hashing function according to a first mapping, the particular hashing function hashing source addresses corresponding to requests in a particular session initiation protocol (SIP) network to generate a corresponding hash key;

    remapping the first mapping to accommodate for the change to the first plurality of proxies to generate a second mapping different from the first mapping, wherein at least one of the respective hash keys of the particular hashing function is mapped to a particular proxy included in the first plurality of proxies in the first mapping and mapped to a different, second proxy included in the second plurality of proxies in the second mapping;

    receiving a particular request at a first proxy in the second plurality proxies following the remapping;

    applying the particular hashing function to a particular source address associated with an endpoint that sent the request to identify a particular hash key corresponding the particular source address;

    determining, from the second mapping, whether the first proxy in the second plurality of proxies is provisioned for servicing the request; and

    forwarding the request to a second proxy based on a result of the particular hashing function.

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