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Flow control method, device, system and network equipment

A flow control device and flow control technology, applied in the field of network communication, can solve the problems of reducing bandwidth utilization, message speed limit, reducing the overall bandwidth utilization of centralized switches, etc.

Inactive Publication Date: 2012-09-12
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the first port of the line card 14 is now forwarding the message to the second port of the line card 13 through the management board 15, because the management board 15 has reduced the rate of sending the message, the line card 14 and the line card Line-speed forwarding cannot be realized between 13, that is, the rate of packets between line card 13 and line card 14 is also limited
And because limiting the rate of the message means reducing the bandwidth utilization rate, therefore, the prior art solution reduces the bandwidth utilization rate between the management board and the line card with traffic congestion and other line cards without traffic congestion, that is, reduces the concentration The overall bandwidth utilization of the switch

Method used

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  • Flow control method, device, system and network equipment
  • Flow control method, device, system and network equipment
  • Flow control method, device, system and network equipment

Examples

Experimental program
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Embodiment 1

[0026] figure 2 It is a flow chart of the flow control method provided by Embodiment 1 of the present invention. The executive body of this embodiment is the management board in the centralized switch, such as figure 2 As shown, the flow control method of this embodiment includes:

[0027] Step 201, receiving a first flow control message sent by a first line card, where the first flow control message includes a flow control identifier;

[0028] Wherein, the first line card refers to a line card where traffic congestion occurs on the centralized switch. That is, when the first line card is blocked, it will generate the first flow control message, and notify the second line card on the centralized switch to send the message to the first line card through the first flow control message. Wherein, the first flow control message carries a flow control identifier, which is used to distinguish the first flow control message from other messages, and can be uniquely identified on t...

Embodiment 2

[0045] In this embodiment, it is first assumed that the first port of the line card 12 and the first port of the line card 13 simultaneously send packets to the line card 11 at a wire speed, and traffic congestion occurs on the second port of the line card 11 . Wherein, the line card 11 is equivalent to the first line card in the technical solution of the present invention, and the line card 12 and the line card 13 are respectively equivalent to the second line card in the technical solution of the present invention. Based on the above assumptions, the flow of the flow control method in this embodiment is as follows image 3 shown, including:

[0046] Step 301, the line card 11 encapsulates and generates the first flow control message, the first flow control message contains the information of the input port of the input message when traffic congestion occurs, that is, the information of the first port of the line card 12 and the information of the first port of the line card ...

Embodiment 3

[0060] Figure 4 A schematic structural diagram of the flow control device provided by Embodiment 3 of the present invention. The flow control device in this embodiment may be a management board in the centralized switch, or may be an external device independent of the centralized switch and connected to the centralized switch. In this embodiment, the flow control device is used as the management board of the centralized switch as an example for illustration. Such as Figure 4 As shown, the flow control device in this embodiment includes: a receiving module 41 and a forwarding module 42 .

[0061] The receiving module 41 is connected to each line card in the centralized switch, and is used for receiving a first flow control message sent by the first line card, and the first flow control message includes a flow control identifier. Wherein the first line card refers to the line card where traffic congestion occurs in the centralized switch; wherein, when the first line card r...

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PUM

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Abstract

The invention provides a flow control method, device, system and network equipment, and the flow control method comprises the following steps: receiving a first flow control message sent by a first line card, wherein the first flow control message comprises flow control identification; and forwarding the first flow control message to a corresponding second line card based on the flow control identification so as to facilitate the second line card to sent a second flow control message to the opposite terminal equipment of the second line card based on the first flow control message. By adopting the technical scheme of the invention to perform flow control on a centralized switch, the bandwidth utilization factor between a management board and each line card can not be lowered while the flow control is realized at the same time, thus ensuring the overall bandwidth utilization factor of the centralized switch.

Description

technical field [0001] The invention relates to network communication technology, in particular to a flow control method, device, system and network equipment. Background technique [0002] A centralized switch is a switching device that appears with the development of network and switching technologies. A centralized switch includes at least a management board and multiple line cards connected to the management board; each line card has several ports for connecting with other devices, and is responsible for receiving messages sent by other devices or forwarding messages to other devices . Wherein, packets are not directly forwarded between line cards, but are forwarded through a management board. Specifically, such as figure 1 The shown centralized switch includes a line card 11 , a line card 12 , a line card 13 and a line card 14 , which are respectively connected to a management board 15 . When the first port of the line card 11 receives the message, it is directly fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/801
Inventor 刘忠东陈宏涛刘茗肖文清
Owner RUIJIE NETWORKS CO LTD