Queueing technique for multiple sources and multiple priorities

Details Queueing technique for multiple sources and multiple priorities Queueing technique for multiple sources and multiple priorities

2004-10-18

2009-06-09

Ngo, Ricky (Department: 2416)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S230100, C370S386000, C370S358000

Reexamination Certificate

active

07545815

ABSTRACT:
A method of dealing equitably with traffic from multiple VPNs feeding into a single router utilizes the weighted fair queueing (WFQ) technique of the prior art in combination with a “service level” queue comprising a set of tokens defining the class of service (COS) with the next packet to be transmitted and a queue selector that functions to query each queue in a round robin fashion. The service level queue ensures that the higher priority traffic will be transmitted first, while the queue selector ensures that each VPN will receive similar service. The queue selector may be “weighted” in that if a particular VPN generates substantially more traffic than the other VPNS, that VPN will be selected more than once during a round robin cycle to transmit a packet (“weighted round robin” WFQ).

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