Method for controlling bandwidth of network exchange devices and equipments

Abstract

When there are packets waited to transmit on the client end, the average traffic generated at the client end before time period n+1can be calculated by following formula: Tr(n+1)=g*Trdelta[n], where g<1, Trdelta[n] is the traffic at the client end in time period n, Tr[n] is the real generated average traffic before the time period n. Packets can be received or transmitted only when Tr[n+1] is smaller than the threshold value of bandwidth Tr-pre of the interface at the client end.

Description

technical field [0001] The invention relates to a network switching device, in particular to a method and device for controlling the bandwidth of the network switching device. Background technique [0002] With the development of network communication technology, the use of various network devices has enabled people to easily access the rich resources of the network world. For example, users of general Ethernet (Ethernet) can use a The network switching device is connected to the upstream (uplink) Fast Ethernet (FastEthernet), so as to be able to connect to the Internet. [0003] figure 1 Illustrate the configuration example of known network switching equipment 11, each client interface 111 (client port) of it connects a 10Base-T Ethernet network, and its upstream interface 112 (uplink port) then connects a 100Base-T high-speed Ethernet Ethernet, users at the 10Base-T Ethernet side can connect to the 100Base-T high-speed Ethernet through the network switching device 11 to ...

AI Technical Summary

Problems solved by technology

When the ISP uses the Ethernet as the access device of the Internet, first of all, because the bandwidth of the Ethernet is at least 10Mb / sec, if there is no restriction, when many users access the Internet, it will cause a backbone network. Unable to bear the load and lead to congestion. Secondly, from the point of view of the ISP manufacturer, hierarchical charging is necessary. By controlling the bandwidth, the network speed can be graded to achieve the purpose of hierarchical charging. Therefore, it can be seen that when Ethernet When the road is widely used in the access equipment of the Internet, the demand for bandwidth control will arise

However, as mentioned above, the bandwidth of the general Ethernet network is fixed, and many manufacturers use high-level (layer 3 or 4) protocols (High layer protocol) to solve the problem of bandwidth control, but this approach makes Ethernet The cost of Ethernet equipment has been greatly increased, resulting in the price of Ethernet equipment being no longer cheap, thus losing its competitive advantage. Therefore, it is an urgent problem to be solved to provide a simple and cheap method that can realize bandwidth control

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