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Methods and apparatus to track changes to a network topology

  • US 9,798,810 B2
  • Filed: 09/30/2014
  • Issued: 10/24/2017
  • Est. Priority Date: 09/30/2014
  • Status: Active Grant
First Claim
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1. A method to track changes to a network topology, the method comprising:

  • in response to a reporting message originating at a software defined network controller, the reporting message including topology change information corresponding to a pending topology change event to occur in a network at a future time,generating, at a topology tool of a network management system, a confirmation-seeking message based on the topology change information to confirm the occurrence of the pending topology change event, the confirmation-seeking message being transmitted to a network element to the pending topology change event;

    generating, at the topology tool, a pre-confirmation data record, the pre-confirmation data record to reflect the topology change information contained in the reporting message; and

    storing the pre-confirmation data record in a pre-confirmation topology database of the topology tool, the pre-confirmation data record being unconfirmed at a time of storage in the pre-confirmation topology database; and

    when a response to the confirmation-seeking message received at the topology tool confirms the pending topology change event has occurred, updating a post-confirmation topology database by storing a post-confirmation data record in the post-confirmation topology database, the post-confirmation data record being based on the pre-confirmation data record;

    wherein the post-confirmation record is a second post-confirmation record, and the method further includes determining whether a first post-confirmation data record corresponding to the network element subject to the topology change event is stored in the post-confirmation topology database;

    wherein the pre-confirmation data record is stored in the pre-confirmation topology database based on whether the first post-confirmation data record is determined to be stored in the post-confirmation topology database.

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