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PFC deadlock detection method and device

A detection method and deadlock technology, applied in the field of communication, can solve the problems of low detection efficiency and waste of human resources.

Active Publication Date: 2020-04-10
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for detecting PFC deadlock, which are used to solve the problems in the prior art that a large amount of human resources are wasted and the detection efficiency is very low

Method used

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  • PFC deadlock detection method and device
  • PFC deadlock detection method and device
  • PFC deadlock detection method and device

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Experimental program
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Embodiment approach

[0059] An optional implementation manner, the above method also includes:

[0060] The packets in the sending buffer queue corresponding to the first virtual channel are processed in a preset manner.

[0061] Since the PFC deadlock is detected, in order to break the PFC deadlock, it is necessary to process the packets in the sending buffer queue corresponding to the first virtual channel, and the processing may be performed in a preset manner, which may be forwarding or discarding. Processing the messages in the sending buffer queue corresponding to the first virtual channel can ensure that the receiving buffer queue of the network device is not congested, so that the PFC pause frame will not be sent to the upstream network device, thereby breaking the PFC deadlock. Wherein, the network device will receive the message sent by the uplink network device.

[0062] An optional implementation manner, before processing the messages in the sending buffer queue corresponding to the f...

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PUM

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Abstract

The invention discloses a PFC deadlock detection method and device, and the method comprises the steps: periodically detecting whether the flow stopping identifier of a virtual channel corresponding to each transmission buffer queue in network equipment is valid or not, wherein the flow stopping identifier of each virtual channel is set according to a PFC pause frame transmitted by the next network equipment; counting the number of times of continuous detection that the flow stopping identifier of each virtual channel is effective; and determining that PFC deadlock exists in a loop formed by the network equipment and other network equipment if the flow stopping identifier of the first virtual channel in each virtual channel is that the effective continuous detection frequency reaches a setfrequency. In this scheme, whether the PFC deadlock exists in the loop formed by the network equipment and other network equipment can be determined according to whether the effective continuous detection frequency of the flow stop identifier in each virtual channel reaches the set frequency or not, so that the PFC deadlock can be automatically detected, and compared with the prior art, the humanresources can be greatly saved, and the detection efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method and device for detecting a priority-based flow control (Priority-based Flow Control, PFC) deadlock. Background technique [0002] The principle of PFC is to create 8 virtual channels with different priorities on the link between two network devices. The network device sending the message will create 8 corresponding sending buffer queues, and the network device receiving the message will create 8 A corresponding receiving buffer queue, the network device sending the message caches the message to be sent in the corresponding sending buffer queue according to the type of the message, and then sends the message through the corresponding virtual channel, and the network device receiving the message When there is congestion in a receive buffer queue, a PFC pause frame can be sent to instruct the network device sending the message to deactivate the virtual channe...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/825
CPCH04L43/16H04L47/26
Inventor 黄国华
Owner RUIJIE NETWORKS CO LTD