Abstract: The present invention relates to a data buffer memory (104) and method for storing data in a data communications network, and to a data buffer system (100) comprising such a data buffer memory. The data buffer memory comprising a data section (104a?) comprising a number of memory pages (104a); and a package descriptor section (104b?) comprising a 5 number of package descriptors (104b); wherein at least one queue (103) of packets is stored in the data section (104a?) as an ordered set of packages, and wherein a package is an ordered set of packets.

Abstract: A distributed network device and method for policing a flow of traffic in the chassis switch in communication networks. The distributed network device incudes a first processor configured to perform an egress processing operation on data packets received from a plurality second processor units in the distributed network switch, the data packets being destined for a receiving device coupled to the distributed network switch. Further, the distributed network device includes a metering unit associated with the first processor, the meting unit configured to meter a flow of the data packets to the receiving device and output a metering result. Also, the distributed network device includes a message generator configured to communicate to the plurality of second processors in the distributed network device a notification message indicative of the metering result.

Abstract: There is provided a network device comprising a physical queue management processor configured to manage attributes of physical queues of data packets. The network device further comprises a scheduling processor which is configured to manage scheduling nodes that establish a scheduling hierarchy among the physical queues in a network, utilizing a bi-directional mapping of the physical queues to logical queues. The network device further comprises a traffic management processor which is configured to modify the bi-directional mapping mentioned above.

Abstract: In a method of processing packets in a network, a packet is received at an ingress port of a network device. A traffic class associated with the packet is determined. Based on the traffic class, it is determined whether the packet should transmitted without being enqueued by a traffic manager of the network device. When it is determined that that the packet should be transmitted without being enqueued by the traffic manager, the packet is sent to an egress port of the network device without enqueuing the packet by the traffic manager. When it is determined that the packet should not be transmitted without being enqueued in the network device, the packet is enqueued in a queue in the traffic manager of the network device. The packet sent to the egress port without being enqueued by the traffic manager is accounted for in the traffic manager.

Abstract: The present invention relates to a data buffer memory (104) and method for storing data in a data communications network, and to a data buffer system (100) comprising such a data buffer memory. The data buffer memory comprising a data section (104a?) comprising a number of memory pages (104a); and a package descriptor section (104b?) comprising a 5 number of package descriptors (104b); wherein at least one queue (103) of packets is stored in the data section (104a?) as an ordered set of packages, and wherein a package is an ordered set of packets.