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Method, device and system for detecting bandwidth

A technology of bandwidth and bandwidth request messages, applied in the field of computer networks, can solve the problems of occupying network resources, time-consuming, cumbersome detection process, etc.

Active Publication Date: 2019-01-11
山东融智产业引导基金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to accurately detect the bandwidth, the source device needs to adjust the size of the detection traffic multiple times and send the detection traffic to the destination device, which makes the detection process cumbersome, time-consuming, and consumes a lot of network resources.

Method used

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  • Method, device and system for detecting bandwidth
  • Method, device and system for detecting bandwidth
  • Method, device and system for detecting bandwidth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] An embodiment of the present invention provides a method for detecting bandwidth, such as figure 1 Shown is a schematic flow chart of the method, specifically including:

[0049] S101. The source device sends a first bandwidth request packet to the forwarding device.

[0050] The destination Internet Protocol (English: Internet Protocol, abbreviation: IP) address of the first bandwidth request message is the IP address of the destination device. The forwarding device is other devices on the network link detected by the source device except the source device, including all forwarding devices and destination devices passed between the source device and the destination device. On an actual network link, the forwarding device can be a router or a Layer 3 switch.

[0051] It should be noted that the first bandwidth request message includes a time to live (English: Time to Live, abbreviation: TTL) of the first bandwidth request message. The first bandwidth request message ...

Embodiment 2

[0075] An embodiment of the present invention provides a method for detecting bandwidth, such as figure 2 Shown is a schematic flow chart of the method, specifically including:

[0076] S201. The forwarding device receives the first bandwidth request message sent by the source device.

[0077] The destination IP address of the first bandwidth request message is the IP address of the destination device, and when the first bandwidth request message is a UDP type message, the UDP type message includes a specific first port number, and the specific first port number is used When the forwarding device recognizes that the UDP type message is a bandwidth request message, or the first bandwidth request message is a TCP type message, the TCP type message includes a specific second port number, and the specific second port number is used by the forwarding device The TCP type message is identified as the bandwidth request message, and the TTL value in the first bandwidth request messag...

Embodiment 3

[0120] An embodiment of the present invention provides a source device, such as Figure 4 Shown is a schematic structural diagram of the source device, including:

[0121] The sending module 10 is configured to send a first bandwidth request message to the forwarding device, where the destination IP address of the first bandwidth request message is the IP address of the destination device.

[0122] The receiving module 11 is configured to receive a bandwidth response message sent by the forwarding device, wherein the bandwidth response message includes the IP address and bandwidth of the forwarding device, and the bandwidth is the bandwidth between the forwarding device and the next-hop forwarding device of the forwarding device.

[0123] The execution module 12 is configured to store the bandwidth and generate a second bandwidth request message, where the TTL value of the second bandwidth request message is one greater than the TTL value of the first bandwidth request message...

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Abstract

The embodiment of the invention provides a method and system for detecting a bandwidth, and devices and relates to the technical field of computer network. The method and system may quickly detect the bandwidth and do not influence normal data transmission in the network. The method comprises steps that a source-end device sends a first bandwidth request message to a forwarding device, wherein the IP address of the first bandwidth request message is the IP address of a destination-end device; the source-end device receives a bandwidth response message sent by the forwarding device, wherein the bandwidth response message includes the IP address and the bandwidth of the forwarding device; and the source-end device stores the bandwidth and generates a second bandwidth request message, wherein the time to live (TTL) of the second bandwidth request message is greater than that of the first bandwidth request message.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a method, device and system for detecting bandwidth. Background technique [0002] The detection bandwidth is generally performed by a double-ended detection method. The double-ended bandwidth detection method is as follows: the source device sends detection traffic to the destination device at a preset rate K0, and the destination device records the arrival time of each data packet in the detection traffic, and compares the data packet according to the arrival time of each data packet. Detect the time characteristics of the traffic arriving at the destination device for statistics, so as to calculate the network delay according to the time characteristics, and judge whether there is congestion on the transmission link according to the network delay, and send the judgment result to the source device; the source device adjusts according to the judgment result Detect the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26
Inventor 李洪升
Owner 山东融智产业引导基金有限公司
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