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Message control method and network device

A control method and message technology, which is applied in the field of network communication, can solve problems such as head-of-line blocking, affecting the performance of the entire network, and congestion spreading, so as to reduce the possibility of head-of-line blocking, reduce congestion spreading, and reduce head-of-line blocking Effect

Active Publication Date: 2019-03-01
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the downstream node sends a backpressure signal to the upstream node, which will cause all upstream nodes to suspend sending all packet flows of this priority, so that the packet flow that will not cause congestion due to the small amount of data will also be blocked. The situation where the upstream node suspends sending causes serious head of line blocking (HOLB) ​​problems to occur in these packet streams with a small amount of data, and head of line blocking will cause congestion to spread and greatly affect the performance of the entire network

Method used

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  • Message control method and network device

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Embodiment Construction

[0045] The network system in each embodiment of the present application may be a data center adopting a network architecture such as a CLOS architecture, a Mesh architecture, or a Torus architecture, or may be other non-data center networks adopting the foregoing architecture, which is not limited in this application. For ease of description, the following only uses the data center of the CLOS architecture as an example for illustration.

[0046] The data center of the CLOS architecture may include servers (servers) for providing various services. In addition to the server, it also includes multiple different types of switches such as TOR switches and SPINE switches. Wherein, the TOR switch can be set on the link between the server and the SPINE switch, the uplink port of the TOR switch is used to connect to the SPINE switch, and the downlink port is used to connect to the server. Each of the TOR switches can be connected to multiple SPINE switches through multiple uplink por...

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Abstract

The invention provides a message control method and network equipment. The method includes the following steps: detecting a message flow that causes a congestion state change; generating a congestionisolation message, wherein the congestion isolation message is used for changing the priority of messages in the message flow, and the congestion isolation message includes description information ofthe message flow; and sending the congestion isolation message to at least one node. By adopting the method, the network equipment and the like provided by the application, when the congestion state changes, the message flow causing the congestion state change can be identified, and other nodes can be notified to change the priority of the messages in the message flow without affecting the transmission of other message flows, so that the packet loss caused by congestion can be avoided, the occurrence of head-of-line blocking caused by non-congestion isolation can also be avoided to a great extent, and congestion diffusion can be avoided.

Description

technical field [0001] The present application relates to the field of network communication, in particular to a message control method and a network device. Background technique [0002] With more and more businesses relying on ultra-low latency data centers, such as high-performance computing, artificial intelligence, and distributed storage, users have higher and higher requirements for data transmission latency between nodes in the data center. In actual use, packet loss due to congestion is an important factor affecting service performance. [0003] In order to reduce packet loss caused by congestion, a priority-based flow control (PFC) mechanism may be introduced during data transmission between nodes in the data center. After introducing the PFC mechanism, the upstream node can determine the priority of the message flow corresponding to each service to be transmitted according to the priority of the service to be transmitted. The higher the priority of the service to...

Claims

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Application Information

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IPC IPC(8): H04L12/803H04L47/31H04L47/6275
CPCH04L47/122H04L47/129H04L47/2483H04L47/17H04L47/2458H04L47/2441H04L45/38H04L47/12H04L47/28H04L47/6275
Inventor 沈利郑合文周洪胡农达于翔
Owner HUAWEI TECH CO LTD
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