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Apparatus, method, and computer product for topology-information collection

  • US 20070201385A1
  • Filed: 05/22/2006
  • Published: 08/30/2007
  • Est. Priority Date: 02/24/2006
  • Status: Abandoned Application
First Claim
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1. A computer-readable recording medium that stores therein a computer program that causes a computer to collect information on the topology of a network including at least an intermediate node having an address table, which contains address information of substantially all nodes in the network, and from which is deleted address information of a node that has not performed communication for a predetermined time period, the nodes including at least one router, the computer program causing the computer to execute:

  • detecting a router from among the nodes;

    causing detected router to broadcast, in the network, via the intermediate node echo-request packets each requiring an echo-reply packet so that the intermediate node stores in a corresponding address table address information of the detected router and address information of a sender node of an echo-reply packet; and

    collecting address information from the address table of the intermediate node before the address information is deleted from the address table due to elapse of the predetermined time period.

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