Methods and apparatus for advertising a route for transmitting data packets
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United States of America Patent
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Apr 23, 2013
Grant Date -
Mar 24, 2011
app pub date -
May 20, 2008
filing date -
May 20, 2008
priority date (Note) -
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Abstract
Method and apparatus for advertising a route for transmitting data packets in a network. A first network element obtains a metric indicative of a cost for routing packets from the first network element to a second network element. The first network element compares the obtained metric with a metric received in a route advertisement message advertising a second route towards the second network element. The first network element sends route advertisement messages, advertising a first route towards the second network element through said first network element, only if the obtained metric indicates a lower cost than a received metric. When two or more network elements are advertising routes towards the same destination, the invention provides a solution allowing an optimized usage of transmission resources between these network elements and said destination.
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