A flow control method and device

Abstract

The invention discloses a flow control method and a device. The method comprises the following steps: monitoring flow of a port connected with a client side, by an access device; clearing corresponding cache data of the port by the access device when the number of PAUSE frames received by the access device from the port in the predetermined time is larger than a first predetermined value and the data sent to the client side from the port in the predetermined time is not larger than a second predetermined value. According to the flow control method and the device thereof, the influence of the abnormity of the client side on data transmission from the server to the other client sides is avoided; the range of the influence caused by the abnormity of the client sides is reduced; the losses of the clients are reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a flow control method and equipment. Background technique [0002] IEEE (Institute of Electrical and Electronics Engineers, Institute of Electrical and Electronics Engineers) 802.3X is a full-duplex Ethernet data link layer flow control method. When the client sends a request to the server, if the client's own system or network is congested , the client will send a PAUSE (pause) frame to the server to delay the data transmission from the server to the client and reduce packet loss. [0003] Such as figure 1 As shown, it is assumed that clients (such as Client-1, Client-2, ..., Client-N) are connected to servers (such as Server-1, Server-2, ..., Server-N) through access devices (such as access switches) ), and the flow control function is enabled on each client, server, and access device. If the network card of the client cannot process the data from the server in...

AI Technical Summary

Problems solved by technology

[0004] When the network card of the client has a problem, the client will continue to send PAUSE frames quickly, causing the access device to receive a large number of Pause frames, and causing the port connected to the client to send data to 0.

The access device continuously and rapidly sends PAUSE frames through the port connected to the server, causing the server to receive a large number of Pause frames, and causing the server to send data to 0

In practical applications, the server does not only send data to the client with a problem with the network card, but also needs to send data to other clients, and when the server sends data at a speed of 0, it will cause the server to be unable to send data to other clients, affecting The normal data transmission process of other clients causes business interruption of other clients

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