Method and device for testing capacity of data packet buffer of switch

Abstract

The invention discloses a method and device for testing the capacity of a data packet buffer of a switch. The method comprises the steps that both a first port and a second port transmit data packets to a third port by configuring a transmission relation of the switch, the first port transmits the data packet capable of filling the whole band width firstly, and the second port sends burst flow secondly; at this time, the data packet of the burst flow is sent to the data packet buffer, the first port is stopped from sending the data packet, and the data packets in the data packet buffer are transmitted through the third port; and the capacity value of the data packet buffer is calculated out by calculating sent quantity of the first port and accepted quantity of the third port. By means of the method, the capacity value of the data packet buffer of the three-layer switch can be accurately tested, and accordingly, the sizes of the data packet buffers of Ethernet three-layer switches of different manufactures can be obtained through testing.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and a device for testing the data packet buffer capacity of a three-layer switch forwarding data packets in a network. Background technique [0002] The network in today's society is highly developed, and a large number of data packets are transmitted on the network at all times, and the carriers that carry these network traffic are layer 3 switches and routers. Especially at the aggregation layer and the backbone layer, the throughput of a Layer 3 switch must reach hundreds of Gbps per second, which is a very large amount of data. It is necessary to complete the forwarding of such a large amount of data while ensuring low latency and as much as possible. Possibly fewer error packets require the ASIC of the switch to have the corresponding forwarding capability. Currently, switch forwarding generally has the following three methods: [0003] 1) Cut Throug...

AI Technical Summary

Problems solved by technology

However, for Ethernet switch system testing, the size of the switch packet buffer is very difficult to test, because the packet buffer is not evenly distributed on each interface of the switch, but can be automatically adjusted according to the traffic size of different interfaces , and the message is forwarded out while entering the packet buffer, so it is difficult to get an accurate size

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