| 摘要 |
The invention relates to a method and an arrangement for packet management in a router and more particularly for control of dropped packets and storing information about dropped packets for managment and measurement purposes. The router comprises input ports for receiving packets, queues for storing packets before the packets are sent to output ports, routing logic for determining in which queue a packet is to be stored, and dropping logic for determining if a packet is to be dropped. When a packet is to be dropped, information about the dropped packet is copied, the information is stored in an information memory, and the packet is removed from its queue. Preferably, the information includes current time, original packet size, router state, queue identification, and/or the reason why the packet was dropped. By storing useful information about the dropped packets, the invention enables loss measurement, error detection and other verification procedures. |
