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Method for network address table maintenance in a data-over-cable system using destination reachibility

  • US 6,754,622 B1
  • Filed: 05/24/1999
  • Issued: 06/22/2004
  • Est. Priority Date: 05/24/1999
  • Status: Expired due to Fees
First Claim
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1. In a data-over-cable system, a method of network address maintenance, comprising the steps of:

  • reading a first network protocol address, for a protocol other than a data link layer protocol, from a network address table associated with a first network device;

    sending a first request message from the first network device to a second network device associated with the first network protocol address to determine if the second network device is active; and

    determining whether the first network device receives a second reply message from the second network device within a pre-determined amount of time, and if not, deleting the first network protocol address from the network address table.

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