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Automatic closing method and automatic recovery method of unidirectional link and its device

A one-way link, automatic recovery technology, applied in the direction of interconnection devices, telephone communication, supervision/control auxiliary connection, etc., can solve the problems that cannot be automatically activated, the link cannot be reactivated, etc.

Active Publication Date: 2007-10-17
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the fault of the unidirectional link is eliminated, the link cannot be re-enabled unless the user manually intervenes and restores the ports at both ends through the RESET (reset) command.
That is, in the event of a unidirectional link failure, the port can be automatically shut down but not automatically enabled

Method used

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  • Automatic closing method and automatic recovery method of unidirectional link and its device
  • Automatic closing method and automatic recovery method of unidirectional link and its device
  • Automatic closing method and automatic recovery method of unidirectional link and its device

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Embodiment Construction

[0018] Specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described here are for illustration only, and are not intended to limit the present invention.

[0019] First of all, it must be explained that, in the present invention, if the port is set to the manual shutdown mode, when a one-way link is detected, the one-way link is manually closed, and the one-way link needs to be manually restored, and the one-way link is automatically closed. Link and auto-recovery unidirectional links only work when the port is set to auto-shutdown mode. And here only describe its shutdown and recovery mechanism for unidirectional links, those skilled in the art can fully understand that the shutdown mechanism of unidirectional links is equivalent to the shutdown mechanism of unidirectional ports, and the recovery mechanism of unidirectional links is equivalent to link recovery A link startup mechanism after bidirectional co...

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PUM

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Abstract

The present invention relates to an automatic turnoff method and an automatic comeback method of an unidirectional link, and a device thereof. Said automatic turnoff method of an unidirectional link in accordance with the present invention comprises the following steps: detecting whether an unidirectional link exists between the current terminal and its opposite terminal; setting the port of thecurrent terminal to virtual turnoff when an unidirectional link is detected; determining whether the bidirectional connectedness between the current terminal and its opposite terminal has been recoverd, according to message received from the opposite terminal; cancelling the virtual turnoff of the current terminal port and starting-up automatically the current terminal port, after determining that the bidirectional connectedness between the current terminal and its opposite terminal has been recoverd.

Description

technical field [0001] The invention relates to an automatic closing method and automatic recovery method of a one-way link and a device thereof. Background technique [0002] When the fiber optic or copper Ethernet cables connecting two devices are connected at the physical layer, if one of the ports at both ends of the link (for example, the local end) can receive the link layer packets sent by the other end, but the other end (For example, called the opposite end) cannot receive the message sent by the local end, then this link is defined as a unidirectional link on the device. Since the physical layer of the link is often in a connected state and can work normally at this time, the detection mechanism of the physical layer cannot find problems in the communication between devices. [0003] FIG. 1 is a schematic diagram of a unidirectional link situation. In FIG. 1 , for example, Port 11 and Port 12 of Switch 1 and Port 21 and Port 22 of Switch 2 are neighbors to each o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M7/06H04M7/00
Inventor 庄宇余波吴蔷
Owner NEW H3C TECH CO LTD
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