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High availability synchronization architecture

  • US 7,194,652 B2
  • Filed: 10/29/2002
  • Issued: 03/20/2007
  • Est. Priority Date: 10/29/2002
  • Status: Expired due to Fees
First Claim
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1. A method of providing redundancy in a network comprising multiple control processors, the method including:

  • (a) configuring an active image which comprises a plurality of executable components;

    (b) configuring a standby image which comprises a copy of the components comprising the active image;

    (c) permitting said active image to execute;

    (d) maintaining said standby image in a standby mode of operation; and

    (e) transmitting updated state information from the active image to the standby image during run-time of the active image;

    wherein each component in the active and standby images registers with a fabric state synchronization (FSS) facility which performs (e), and wherein the FSS is distinct from the components.

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