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Clock synchronization method of stacking equipment and stacking equipment

A stacking device and clock synchronization technology, which is applied in the communication field, can solve problems such as interruption of clock synchronization function, interruption of clock synchronization function of downstream network equipment, failure to send clock synchronization messages, etc., to achieve the effect of avoiding interruption

Active Publication Date: 2013-08-21
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the soft restart upgrade process of ISSU, when upgrading a member device in the stack, if there is a slave port on the member device, it cannot process the clock synchronization packet received on the slave port, which leads to the soft restart upgrade process of ISSU If there is a master port on the member device, clock synchronization packets cannot be sent from the master port, resulting in the interruption of the clock synchronization function of downstream network devices

Method used

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  • Clock synchronization method of stacking equipment and stacking equipment
  • Clock synchronization method of stacking equipment and stacking equipment
  • Clock synchronization method of stacking equipment and stacking equipment

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Experimental program
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Embodiment Construction

[0034] An embodiment of the present invention provides a clock synchronization method for stacked devices, which can be applied to a clock synchronization network including an IRF stacked device (that is, a network that implements a PTP function in an IRF network); wherein, the IRF stacked device consists of multiple members Devices are stacked, and when the ISSU soft restart upgrade is performed on the IRF stack devices, the ISSU soft restart upgrade is performed on a member device basis.

[0035] Such as figure 2 As shown in the figure, it is a schematic diagram of the network to realize the PTP function in the IRF network, and the figure 2 It is a schematic diagram of an application scenario of an embodiment of the present invention; wherein, the clock synchronization network includes network device 1, network device 2 and network device 3; network device 1 is a grandmaster clock (GM) for publishing synchronization time, and network device Both PTP port 1 and PTP port 2 ...

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PUM

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Abstract

The invention discloses a clock synchronization method of stacking equipment and the stacking equipment. The method includes the steps: the IRF stacking equipment judges whether a Slave port exists on member equipment and Passive ports exist on other member equipment, if the result is positive, one Passive port is set to be a temporary Slave port, clock synchronization process is carried out on a received clock synchronization message by means of the temporary Slave port; and / or the IRF stacking equipment judges whether Master ports exist on the member equipment, and if the result is positive, Announce messages sent through the Master ports carry information used for indicating soft restart upgrade. When ISSU soft restart upgrade is carried out on the member equipment in the IRF stacking equipment, interrupt problems of a clock synchronization function of the IRF stacking equipment can be prevented from occurring.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for clock synchronization of stacked devices. Background technique [0002] Precision Time Protocol (Precision Time Protocol, PTP) is used as a clock synchronization protocol for high-precision time synchronization between network devices. The Announce message contains various priority parameters) to calculate the port role of each PTP port. The port role of each PTP port can include master (Master) port, slave (Slave) port, passive (Passive) port, etc.; among them, Master The port is the PTP port on the network device for publishing the synchronization time, the Slave port is the PTP port on the network device for receiving the synchronization time, the Passive port is the PTP port on the network device that does not publish or receive the synchronization time, and the Passive port can As the backup port of the Slave port. [0003] Such as ...

Claims

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Application Information

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IPC IPC(8): H04L7/00H04J3/06
Inventor 戎衍博王佳炳
Owner XINHUASAN INFORMATION TECH CO LTD