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Ethernet exchange controller and its congestion control method

A congestion control, Ethernet technology, used in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as unfairness, connection ports dragging fast connection ports, etc.

Inactive Publication Date: 2006-03-15
VIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, the shared memory structure used by the existing Ethernet switch controller often causes the problem that the slow connection port drags down the fast connection port when the network enters a congested state, forming an unfair phenomenon

Method used

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  • Ethernet exchange controller and its congestion control method
  • Ethernet exchange controller and its congestion control method
  • Ethernet exchange controller and its congestion control method

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Embodiment Construction

[0022] In this section, a preferred embodiment will be described in detail with accompanying drawings, so as to make the purpose and features of the present invention more comprehensible.

[0023] figure 1 It is a schematic block diagram of the circuit connection of the Ethernet switch implementing the present invention. Wherein, the Ethernet switch 10 includes: a plurality of connection ports 11, used to receive or transmit packets; a plurality of physical layer devices 12, one-to-one coupled to these connection ports 11; a buffer 13, in order to store to-be-output packets; a temporary register 14, which stores the relevant setting values ​​of congestion control; an Ethernet switch controller 15, which is coupled to these physical layer devices 12; the switch controller 15 is used to perform packet switching actions, and in When the network is congested, congestion control is performed according to the setting value of the register 14 .

[0024] figure 2 yes figure 1 An ...

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Abstract

This invention provides an Ethernet exchange controller and jam controlling method, when network enters into jam, the shared memory structure used by the exchange controller is changed to "bisect memory structure" to limit the length of output quene corresponding to each connecting port, is enters into "jam" status when exceeding the length, if any source connection part asks for connection at the output queue, it enters into flow mangement, network package will not be received and output queue length will be limited, when the network gets away from jam, it will return using shared memory structure.

Description

technical field [0001] The invention relates to an Ethernet switch controller and a congestion control method thereof, in particular to a control method for restricting a single connection port from using too many system resources and preventing the overall network transmission rate from being slowed down when the network is congested. Background technique [0002] Under the general trend of office electronization, the application of local area network (Local Area Network, LAN for short) is increasing day by day. Although there are many types of LAN structures, such as Ethernet, Token Ring, and Fiber Distributed Data Interface (FDDI), Ethernet is the most widely used. This is because the erection and maintenance of Ethernet is relatively simple and the cost is relatively low. In addition, the emergence of Fast Ethernet has increased the transmission rate from the original 10Mbps to 100Mbps or even 1Gbps, which has further strengthened the functions of Ethernet and made its ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24
Inventor 陈任凯吴晓龙
Owner VIA TECH INC
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