Method and device for detecting link bandwidth

Abstract

The invention discloses a method and device for detecting link bandwidth. The method comprises the following steps that: an egress router sends a search request for the designated resource to an Internet network through a distributed gnutella network, and receives the response information returned by the seed servers providing a downloading service for the designated resource in the Internet network; the egress server selects a high-quality seed server from the seed servers returning the response information, sends a downloading request for the designated resource to the selected high-qualityseed server, and receives a file corresponding to the designated resource returned by the high-quality seed server; and the egress router determines the link bandwidth according to the sizes of all files corresponding to the designated resource received from a port of the egress router. Through the invention, the link bandwidth of the egress router can be really reflected, and the scheduling accuracy of QoS (quality of service) can be ensured.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and equipment for detecting link bandwidth. Background technique [0002] Such as figure 1 As shown, it is a schematic diagram of multiple terminals accessing the Internet network through the egress router. Among the functions and characteristics of enterprise routers or Internet cafe routers, QoS (Quality of Service, Quality of Service) can be supported, and QoS scheduling depends on link bandwidth (such as QoS The scheduling policy is that when the downstream traffic rate has reached 80% of the link bandwidth, it is necessary to limit the speed of sending packets that occupy a higher bandwidth to the Internet network, so as to avoid the influx of high-speed packets from the Internet network and cause link failure. Congestion occurs), so in order to perform QoS scheduling, it is necessary to accurately set the link bandwidth of the egress router; if the link band...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, it is a schematic diagram of multiple terminals accessing the Internet network through the egress router. Among the functions and characteristics of enterprise routers or Internet cafe routers, QoS (Quality of Service, Quality of Service) can be supported, and QoS scheduling depends on link bandwidth (such as QoS The scheduling policy is that when the downstream traffic rate has reached 80% of the link bandwidth, it is necessary to limit the speed of sending packets that occupy a higher bandwidth to the Internet network, so as to avoid the influx of high-speed packets from the Internet network and cause link failure. Congestion occurs), so in order to perform QoS scheduling, it is necessary to accurately set the link bandwidth of the egress router; if the link bandwidth setting is inaccurate, QoS scheduling based on the inaccurate link bandwidth will fail to meet the QoS scheduling policy Requirements, and will cause serious packet loss, and then lead to problems such as dropped

[0003] For example, when the 10M bandwidth is wrongly set to 100M, based on the QoS scheduling policy, only when the downstream traffic rate reaches 80M, the speed of sending packets that occupy a higher bandwidth to the Internet will be limited. In fact, when the downstream traffic rate reaches At 8M, it is necessary to send packets occupying a higher bandwidth to the Internet network. Obviously, when the downlink traffic rate reaches 8M, the QoS scheduling policy cannot be executed, and serious packet loss will be caused.

[0004] In order to set the link bandwidth, all current egress routers provide bandwidth configuration items, and the user fills in the link bandwidth, and the possibility of filling in the wrong link bandwidth is very high; the reasons include: (1) The network management does not know the real link bandwidth What is it, and use the default value (100M), the actual link bandwidth is smaller than 100M

(2) Users are not familiar with QoS configuration, thinking that the link bandwidth is the maximum transmission rate of the network card

[0008] However, when the speed measurement technology of the dedicated speed measurement website is applied to the egress router, the egress router needs to analyze the relevant content of the speed measurement server website (such as the submission method of the request for speed measurement, etc.), and perform speed measurement based on the analyzed content. The server website forms a dependency; if the speed measurement server website is closed or the page layout is adjusted, the speed measurement can no longer be performed based on the analyzed content, and the speed measurement function will fail

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