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Transparent, look-up-free packet forwarding method for optimizing global network throughput based on real-time route status

  • US 7,254,138 B2
  • Filed: 07/11/2002
  • Issued: 08/07/2007
  • Est. Priority Date: 02/11/2002
  • Status: Active Grant
First Claim
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1. A packet forwarding method for delivering data packets across a communications network,wherein the network comprises a set of ingress and egress ports, and provides routes for delivering packets among a set of nodes that interface with the network through the ingress and egress ports, with a set of nodes reachable to each other via the routes across the network referred to as a set of next-hop destinations to each other,and wherein the network determines whether to deliver a packet arrived on an ingress port to a particular egress port based at least in part on a forwarding identifier included in the packet and on network status,wherein the network status includes:

  • i) current reachability of one or more of the set of next-hop destinations; and

    ii) current traffic load level on a route or routes across the network to one or more of the set of next-hop destinations, wherein the traffic load level on a route towards a next-hop destination is determined based at least in part on an amount of data currently queued in a data buffer for a future delivery on the route across the network to the next-hop destination associated with the buffer.

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