Patent ID: 7272112
Filing Date: 2007-09-18
Classification: H04L

Abstract:
1. A quality of service (QoS) method for effectively processing a plurality of fragmented Internet Protocol (IP) packets transmitted over flows of a network, the method comprising the steps of: (A) when receiving a first fragmented IP packet of a set of fragmented IP packets from a flow, a router determining whether to allow the first fragmented IP packet of the set to pass or to drop by according to predefined QoS rules, wherein when determining to allow the packet to pass, a ‘pass’ status is recorded in a record corresponding to the set of fragmented IP packets, and when determining to drop the packet, a ‘drop’ status is recorded in a record corresponding to the set of fragmented IP packets; and (B) when receiving other fragmented IP packet of the set of fragmented IP packets, the router determining whether to allow the fragmented IP packet to pass or to drop by according to the record of the set of fragmented IP packets, wherein if the record of the set of fragmented IP packets is ‘drop’ status, the packet is dropped, and if the record of the set of fragmented IP packets is ‘pass’ status, the packet is allowed to pass when the used bandwidth of the flow does not exceeds a predetermined bandwidth, otherwise the packet is dropped and the record of the set of fragmented IP packets is modified to the ‘drop’ status.