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Method, device and system for measuring protection group switching time

A technology of switching time and protection group, applied in the field of communication, can solve the problems of easy misjudgment and poor operability of the switching time scheme, and achieve the effect of overcoming inaccurate measurement

Active Publication Date: 2016-01-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problem that in the existing technology, the scheme of sending packets through the tester and calculating the switchover time by the opposite end according to the number of lost packets is not very operable and easy to misjudgment, the embodiment of the present invention provides a method for measuring the switchover time of the protection group Methods, devices and systems

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  • Method, device and system for measuring protection group switching time
  • Method, device and system for measuring protection group switching time
  • Method, device and system for measuring protection group switching time

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Embodiment approach 1

[0044] Embodiment 1: The embodiment of the present invention provides a protection group switching time measurement method, which can be applied to the networking structure of GPONTypeB or EPONTypeB, such as figure 1 and figure 2 As shown, the method includes:

[0045] The implementation principles of GPONTypeB and EPONTypeB protection mechanisms are similar, such as image 3 shown. These two protection groups use a 2:N optical splitter. There are two passive optical network (PON, Passive Optical Network) ports on the OLT connected to this 2:N optical splitter at the same time, and only one PON port is activated. state, the port corresponding to this PON is the active port, and the other PON port is in the standby state, and the port corresponding to it is the standby port. Of course, if the cost permits, there can be more than two ports on the OLT, one of which is active, and the rest are in standby state. In the embodiment of the present invention, a variety of messages...

Embodiment approach 2

[0056] Embodiment 2: The embodiment of the present invention provides a method for measuring the switching time of the protection group, such as figure 1 and figure 2 shown.

[0057] like Figure 4 As shown in , the Ethernet port protection group can be used for link protection between the aggregation device and the access device. Both the aggregation device and the access device have two ports, and both ports of the device are enabled, but only the active port is in the active state, and the other port is in the standby state. In some cases, there may be more than one standby port in the protection group, and this method is also applicable. In the embodiment of the present invention, a variety of messages or messages that can carry port identifiers can be used. The following only takes Ethernet messages as an example. The messages used to measure the switching time of the protection group can be ordinary messages or special messages. Packet used to measure the switching ...

Embodiment approach 3

[0065] Embodiment 3: The embodiment of the present invention provides a method for measuring protection group switching time, which can be applied to a network structure such as GPONTypeC or EPONTypeD, such as figure 1 , figure 2 shown.

[0066] The GPONTypeC protection group uses a 2:N optical splitter, and the EPONTypeD protection group uses a 1:N optical splitter, but the implementation principles of the two protection mechanisms are similar. Figure 5 shown. The two ports of the OLT are respectively connected to two optical splitters, and the two ports of each ONU or ONT are also respectively connected to the two optical splitters. Both OLT and ONU have only one PON port in the active state, which is the active port, and the other PON port is in the standby state, which is the standby port. In some cases, there may be more than one standby port in the protection group, and this method is also applicable. In the embodiment of the present invention, a variety of message...

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Abstract

The invention provides a method, equipment and system for measuring protection group switching time, which can be used for measuring the protection group switching time in an existing network. The protection group switching time measurement method specifically includes the following steps: judging whether a protection group between an opposite terminal and a home terminal is switched according to the change of port identifiers carried by messages sent by the opposite terminal or the change of message receiving ports of the home terminal; in case of the switching, calculating the protection group switching time according to the time information of the messages before and after the protection group switching. The invention overcomes the defect in the prior art that an external tester is used for measuring the protection group switching time, and achieves the measurement in the existing network; in addition, whether the protection group is switched is judged according to the change of the message sending or receiving ports, so as to avoid wrong judgments.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method, device and system for measuring switching time of a protection group. Background technique [0002] With the improvement of the status of access devices in the network, various passive optical network (xPON, xpassive optical network) networks are used to carry out fiber-to-the-building / curbside / home (FTTB / C / H, FiberToTheBuilding / Curb / Home) or mobile bearer The networking form of the optical line terminal (OLT, optical line terminal) puts forward higher reliability requirements for the networking application. [0003] In order to ensure service reliability, it is necessary to analyze the possible fault points of the optical network system. When a fault occurs at the fault point, in order to ensure uninterrupted services, it is necessary to use a line protection scheme for protection. A common protection scheme is to establish a protection group in a link,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/077
Inventor 孟万红陈锐
Owner HUAWEI TECH CO LTD
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