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TCP/IP address protection mechanism in a clustered server environment

  • US 6,430,610 B1
  • Filed: 09/02/1998
  • Issued: 08/06/2002
  • Est. Priority Date: 09/02/1998
  • Status: Expired due to Term
First Claim
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1. A method of maintaining availability of a selected network address in a computer network where the selected network address is initially assigned to a first network adapter, said method comprising steps of:

  • (a) performing a diagnostic operation to determine whether said first network adapter is functioning according to predetermined criteria; and

    (b) if the first network adapter is not functioning according to said predetermined criteria, then moving said selected network address to a different network adapter by changing a place holder address thereof, said different network adapter having both a permanent network address and a place holder network address;

    (c) such that communication continues between said selected network address and other computers in the computer network after a failure of said first network adapter and further wherein said different network adapter concurrently responds to both said selected network address and said permanent network address.

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