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Network congestion notifying method, proxy node, and computer device

A congestion notification and network congestion technology, which is applied in the field of data communication, can solve problems such as loss, failure to reduce the sending rate of the first data packet data flow in time, and send the first congestion notification message, so as to achieve the effect of increasing the transmission rate

Active Publication Date: 2019-02-26
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] In the above scheme, when network congestion is detected, each network node on the transmission link between the sending end and the receiving end cannot send the first congestion notification message to the sending end, and can only be sent by the receiving end, so the sending The end cannot reduce the sending rate of the data flow to which the first data packet belongs in time, so that subsequent packets of the data flow to which the first data packet belongs are lost during transmission

Method used

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  • Network congestion notifying method, proxy node, and computer device
  • Network congestion notifying method, proxy node, and computer device
  • Network congestion notifying method, proxy node, and computer device

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Embodiment Construction

[0048] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the following further describes the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0049] In order to solve the server-side data processing delay during network transmission, the embodiment of the present disclosure adopts RDMA technology for data transmission. Because RDMA technology does not need to rely on the computer's processor, data can be directly transferred to the computer's storage area through the network, thus improving system performance.

[0050] figure 1 For the schematic diagram of the RDMA communication process, see figure 1 , RDMA communication involves two computer systems. One computer system includes server A and channel adapter (CA) A, and the other computer system includes server B and channel adapter B. Each channel adapter card is divided into transmission layer, network layer, link layer and physical...

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Abstract

The invention provides a network congestion notifying method, a proxy node, and a computer device, and belongs to the field of data communication. When receiving a first data packet, the proxy node adds a source queue pair number to the first data packet to obtain the second data packet, and sends a second data packet to a receiving end through a network node. During the forwarding of the second data packet, the network node generates a first congestion notification message carrying the source queue pair number if the network congestion is detected, and sends the first congestion notificationmessage to the proxy node, and then the proxy node sends the congestion notification message to a sending end, so that the sending end reduces the sending rate of the data stream to which the first data packet belongs. Because the network node in the present invention detects the congestion of the network, the network node immediately sends the first congestion notification message to the sendingend, so that the sending end can reduce the sending rate of the data stream to which the first data packet belongs in time, thereby avoiding the loss of a follow-up messages of the data stream.

Description

Technical field [0001] The present disclosure relates to the field of data communication technology, and in particular to a method for notifying network congestion, an agent node, and computer equipment. Background technique [0002] Remote direct memory access (RDMA) is a data transmission technology. Because it does not need to use the computer's processor, cache or operating system, etc., data can be directly read from the memory of other computers through the network. Therefore, the data processing delay in network transmission is reduced. However, RDMA data centers usually adopt the Claus (CLOS) method for networking. The bandwidth of the upstream and downstream interfaces of the switches in the network is asymmetric. When data is transmitted in the network, network congestion often occurs, which affects the communication performance of RDMA. In order to avoid network congestion and improve RDMA communication performance, it is necessary to notify the network congestion in ...

Claims

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Application Information

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IPC IPC(8): H04L12/825H04L29/08H04L47/30H04L47/80
CPCH04L47/263H04L67/56H04L49/358H04L47/115H04L69/161H04L47/30H04L67/5651H04L47/129H04L47/11H04L47/12H04L47/50H04L47/803
Inventor 张维
Owner HUAWEI TECH CO LTD
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