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A switching network congestion management method and device

A management method and switching network technology, applied in the field of packet data switching, can solve the problems affecting the switching network cell forwarding, background flow packet loss, and network-wide packet loss, etc.

Active Publication Date: 2021-05-28
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, when any switching device or SFU in the SF system fails, the failed SFU needs to be pulled out. However, at the moment of pulling out the failed SFU, due to mechanical reasons, The effective state of the link cannot be pulled down at the same time, but there is a sequence. In this way, an intermediate state is easy to appear inside the switching unit, resulting in an asymmetric phenomenon of incoming and outgoing traffic.
In addition, these intermediate states will lead to network traffic congestion and link flow control. If the intermediate state time accumulates to exceed the absorption threshold of the switching unit, the time stamp may not be updated, thus generating a time stamp flow. and because the time stamp has a global attribute, network congestion will directly affect the cell forwarding of the entire switching network, resulting in background flow packet loss, and even the entire network packet loss problem

Method used

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  • A switching network congestion management method and device
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  • A switching network congestion management method and device

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Experimental program
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Embodiment 1

[0042] Such as image 3 As shown, the implementation process of the switching network congestion management method in the embodiment of the present invention includes the following steps:

[0043] Step 301: configure the time threshold of link down-hop delay;

[0044] Generally speaking, during the board removal process, due to the different mechanical characteristics of each SFU, different links will be switched down first and then later, so that the effective status of the links cannot be pulled down at the same time. Therefore, the embodiment of the present invention introduces a mechanism for delaying the link down-hop state.

[0045] Here, in different application scenarios, the time threshold of the link down-hop delay can be configured through software according to the actual situation; among them, for the SFU that generates the board removal operation, within this time threshold, different requirements can be met. The links all generate the link down state.

[0046] H...

Embodiment 2

[0061] This embodiment takes a single-stage switching network structure as an example to describe the implementation process of the switching network congestion management method in detail.

[0062] Figure 4 A schematic diagram of the board removal operation of the single-stage switching network structure is given, as shown in Figure 4 As shown, the single-stage switching network structure includes four switching access devices and a switching unit 0#, wherein the four switching access devices are: switching access device 0#, switching access device 1#, switching Access device 2#, switching access device 3#. Each switch access device can be used not only as a source switch access device, but also as a destination switch access device. From Figure 4 It can be seen that in this single-stage switching network, two flow models are established: flow1 and flow2, where the flow direction of flow1 is: switching access device 0#→switching unit 0#→switching access device 1#; flow2...

Embodiment 3

[0086] This embodiment takes the three-level switching network structure as an example to describe the implementation process of the switching network congestion management method in detail.

[0087] Figure 11 A schematic diagram of the board removal operation of the three-level switching network structure is given, as shown in Figure 11 As shown, the three-level switching network structure includes four switching access devices and six switching units, where the four switching access devices are: switching access devices 0#-3#; the six switching units are: switching Unit 0#-5#. These four switching access devices form the first-level structure of the three-level switching network, switching units 0#, 1#, 3#, and 4# form the second-level structure of the three-level switching network, and switching units 2#, 5 #Constitute the third-level structure of the three-level switching network, and each switching access device can be used as a source switching access device or as a ...

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Abstract

The invention discloses a switching network congestion management method, which includes: configuring the time threshold of link down-hop delay; the method also includes: detecting the link states of all links in the switching network; detecting that there is a current link state When a down-hop change occurs, after waiting for the time threshold of the link down-hop delay, determine the link status information of all links that currently have a delayed down-hop change; The link state information of the routing table is aged, and the updated routing table is obtained. The invention also discloses a switching network congestion management device at the same time.

Description

technical field [0001] The invention relates to packet data switching technology in the network communication field, in particular to a switching network congestion management method and device. Background technique [0002] With the continuous development of network bearer services, operators and users have higher and higher requirements on network reliability. As an important network device, the high availability of routers plays a decisive role in the reliability of the network. As the core part of the router, the switching network is mainly responsible for completing the information exchange of network packets. [0003] figure 1 It is a schematic diagram of the composition structure of the switching network system, such as figure 1 As shown, the switching network system can be roughly divided into the following three parts: a source switching access device, a switching unit, and a destination switching access device. Among them, the source switching access device is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/801
CPCH04L47/12
Inventor 汪振国
Owner SANECHIPS TECH CO LTD