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SYNCHRONIZATION OF MULTICAST INFORMATION USING INCREMENTAL UPDATES

  • US 20110228770A1
  • Filed: 10/27/2010
  • Published: 09/22/2011
  • Est. Priority Date: 03/19/2010
  • Status: Active Grant
First Claim
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1. A method comprising:

  • operating a first processor of a network device in an active mode, the first processor performing a set of multicast routing-related functions in the active mode;

    operating a second processor of the network device in a standby mode, the second processor not performing the set of multicast routing-related functions in the standby mode;

    maintaining, by the first processor, first multicast information used by the first processor for performing the set of multicast routing-related functions, the first multicast information comprising a set of entries, each entry comprising a plurality of fields;

    maintaining, by a second processor, second multicast information comprising a set of entries, each entry comprising a plurality of fields;

    communicating update information to the second processor, the update information comprising information indicative of a change to be made to a set of fields of an entry in the second multicast information, wherein a number of fields included in the set of fields is less than the plurality of fields;

    determining, based upon the update information, an entry in the second multicast information corresponding to the first entry in the first multicast information; and

    updating the first set of fields in the first entry in the second multicast information based upon the update information.

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