QoS router system for effectively processing fragmented IP...

Details QoS router system for effectively processing fragmented IP... QoS router system for effectively processing fragmented IP...

2007-09-18

2007-09-18

Nguyen, Steven (Department: 2616)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S230100

Reexamination Certificate

active

10390762

ABSTRACT:
QoS router system and method are provided for effectively processing fragmented IP packets transmitted over a network. When receiving a first fragmented IP packet of a set from a flow, a router determines whether to allow the first packet to pass or to drop by according to predefined QoS rules. A pass status is recorded in a record if the packet is allowed to pass. A drop status is recorded in the record if the packet is dropped. When receiving other fragmented IP packet of the same set, the router determines whether to allow the fragmented packet to pass or to drop by according to the previous record. If the record is drop status, the packet is dropped, and if the record is pass status, the packet is allowed to pass when the used bandwidth of the flow does not exceeds a predetermined bandwidth.

REFERENCES:
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patent: 6781994 (2004-08-01), Nogami et al.
patent: 6798777 (2004-09-01), Ferguson et al.
patent: 7215637 (2007-05-01), Ferguson et al.
patent: 2002/0126672 (2002-09-01), Chow et al.
patent: 2006/0045074 (2006-03-01), Lee
patent: 2006/0067213 (2006-03-01), Evans et al.

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