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Method of maintaining a topology database

  • US 4,827,411 A
  • Filed: 06/15/1987
  • Issued: 05/02/1989
  • Est. Priority Date: 06/15/1987
  • Status: Expired due to Term
First Claim
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1. A method of maintaining a topology database at a network node in a communications network, said database comprising individual records defining network resources, said method comprising the steps of:

  • monitoring messages received from other network nodes in the network for network resources status updates; and

    removing a record from the topology database where that record defines a resource for which no update message has been received during a predetermined period of time.

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