CN102571384A - Switching method, system and packet transmission network device for multiplex section protection - Google Patents

Abstract

The invention discloses a multiplexing section protection switching method, system and packet transmission network equipment. The method includes the following steps: After receiving the alarm information reported by the port, the line card of the packet transmission network PTN equipment judges that the port belongs to Whether the MSP group type of the multiplex section protection is an intra-board protection group; if so, the line card instructs the ports in the intra-board protection group to switch; otherwise, the line card transmits the alarm information to the PTN device through inter-board communication main control board. The invention reduces the amount of information communicated between single boards and improves the processing efficiency of the system.

Description

Switching method and system for multiplex section protection and packet transmission network equipment

technical field

The present invention relates to the communication field, in particular to a multiplex section protection switching method, system and packet transport network (Packet Transport Network, PTN for short) equipment.

Background technique

At present, among the applications of communication carried by optical fibers, the most widely used is the Synchronous Digital Hierarchy (abbreviated as SDH) transmission technology. and PTN network evolution, and network survivability (that is, the ability of the network to maintain services after various failures) is a very important indicator in the field of transmission technology. Specifically, in the field of SDH, a very important protection strategy is multiplex section protection (Multiplex Section Protection, referred to as MSP). Switch to the normal line. According to the standard of the International Telecommunication Union Telecommunication Standard Sector (ITU-T for short), if a fault is detected in the network, the switching time cannot exceed 50ms.

Fig. 1 is the schematic diagram according to the MSP processing scheme frame of related art, as shown in Fig. 1, in traditional equipment, realize the scheme of MSP basically according to following steps: (1) set the content of MSP protection group by network manager; (2) All optical ports regularly transmit the received alarm information to the MSP decision-making unit; (3) The MSP decision-making unit notifies each optical port of the switching result to realize switching. It can be seen that in the traditional solution, the MSP decision-making unit and the optical port are not on the same single board, and the contents of steps (2) and (3) are transmitted through the hardware connection between the single boards.

However, in some devices, when the hardware is designed, the content of steps (2) and (3) is transmitted through Ethernet communication or similar methods, which will bring a problem, that is, if too much content requires Through the transmission between steps (2) and (3), there will be a phenomenon that the communication processing is not timely, which will cause the switching time to fail to meet the requirements.

Contents of the invention

The main purpose of the present invention is to provide a switching scheme for multiplex section protection, so as to at least solve the problems of slow information processing speed between boards and too long MSP switching time in the above-mentioned related art when communicating via Ethernet.

In order to achieve the above purpose, according to one aspect of the present invention, a switching method for multiplex section protection is provided.

According to the switching method of the multiplex section protection of the present invention, comprise the following steps: after the line card of the packet transmission network PTN equipment receives the reported alarm information of its port, judge whether the type of the multiplex section protection MSP group to which the port belongs is Intra-board protection group; if yes, the line card instructs the port in the intra-board protection group to switch; otherwise, the line card transmits the alarm information to the main control board of the PTN device through inter-board communication.

Further, before the line card receives the reported alarm information of its port, the method further includes: the PTN device analyzes the received information of the MSP group configured by the network management device, and determines the port to which it belongs according to the position of the port in the MSP group. The type of the MSP group, where the type of the MSP group includes the intra-board protection group used to indicate that the ports in the MSP group are on the same protection board and the inter-board protection group used to indicate that the ports in the MSP group are on different protection boards ; If the type of the MSP group is an intra-board protection group, send the information of the MSP group configured on the network management device to the line card corresponding to the intra-board protection group; if the type of the MSP group is an inter-board protection group, send The information of the MSP group configured by the network management device is sent to the main control board.

Further, if the type of the MSP group is an intra-board protection group, the line card instructing the ports in the intra-board protection group to switch includes: when the line card determines that the switch needs to be performed according to the alarm information reported by the port, instructing the board The ports in the inner protection group are switched.

Further, after the line card transmits the alarm information to the main control board of the PTN device through inter-board communication, the method further includes: the main control board instructs the ports in the inter-board protection group to switch over through the inter-board communication.

Further, the inter-board communication method includes a message queue.

In order to achieve the above purpose, according to another aspect of the present invention, a PTN device is also provided.

According to the PTN device of the present invention, it includes a main control board and a plurality of line cards, wherein each line card in the plurality of line cards includes: an MSP group type judging module, which is used to judge after receiving the alarm information reported by its own port Whether the type of the multiplex section protection MSP group to which the port belongs is an intra-board protection group; the intra-board switching decision module is used to indicate that the type of the MSP group is an intra-board protection group when the MSP group type judging module determines Ports in the protection group are switched; and when the MSP group type judging module determines that the type of the MSP group is not an intra-board protection group, the alarm information is transmitted to the main control board through inter-board communication.

Further, the main control board includes: an analysis module, configured to analyze the received information of the MSP group configured by the network management device, and determine the type of the MSP group to which it belongs according to the position of the port in the MSP group, wherein the MSP group The types include the intra-board protection group used to indicate that the ports in the MSP group are in the same protection board and the inter-board protection group used to indicate that the ports in the MSP group are in different protection boards; the processing module is used in the analysis module When it is determined that the type of the MSP group to which it belongs is an in-board protection group, the information of the MSP group configured by the network management device is sent to the line card corresponding to the in-board protection group; and the analysis module determines the type of the MSP group to which it belongs In the case of an inter-board protection group, the information of the MSP group configured by the network management device is sent to the inter-board switching decision module.

Further, the main control board also includes: an inter-board switching decision module, which is used to instruct the ports in the inter-board protection group to switch after receiving the alarm information sent by the intra-board switching decision module of the line card through inter-board communication .

Further, the on-board switching decision-making module is also used to instruct the ports in the on-board protection group to perform switching when it is determined that switching is required according to the reported alarm information of the ports.

In order to achieve the above object, according to yet another aspect of the present invention, a switching system for multiplex section protection is also provided.

The switching system for multiplex section protection according to the present invention includes network configuration equipment and the above-mentioned PTN equipment, wherein the network configuration equipment includes: a setting module for configuring the information of the multiplex section protection MSP group, and the information will be delivered to PTN equipment.

Through the present invention, by adopting the method of distinguishing the types of MSP groups, the decision-making and switching of the protection group in the board are carried out inside the single board, which solves the problem of untimely information processing speed between single boards and excessive MSP switching time in the related art when communicating via Ethernet It reduces the amount of information communicated between boards and improves the processing efficiency of the system.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the schematic diagram according to the framework of the MSP treatment scheme of related art;

FIG. 2 is a flow chart of a switching method for multiplex section protection according to an embodiment of the present invention;

Fig. 3 is a structural block diagram of a PTN device according to an embodiment of the present invention;

Fig. 4 is a structural block diagram of a PTN device according to a preferred embodiment of the present invention;

5 is a structural block diagram of a switching system for multiplex section protection according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of the framework of the MSP processing scheme according to the first preferred embodiment of the present invention; and

Fig. 7 is a schematic diagram of the MSP processing framework of the PTN equipment according to the second preferred embodiment of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

According to an embodiment of the present invention, a method for switching multiplex section protection is provided. Fig. 2 is the flow chart of the switching method of multiplex section protection according to the embodiment of the present invention, as shown in Fig. 2, this method comprises the following steps:

Step S202, after the line card of the packet transmission network PTN equipment receives the reported alarm information of its port, it is judged whether the type of the multiplex section protection MSP group to which the port belongs is an intra-board protection group;

Step S204, if yes, the line card instructs the ports in the protection group in the board to switch; otherwise, the line card transmits the alarm information to the main control board of the PTN device through inter-board communication.

Through the above steps, the decision-making and switching of the protection group in the board are carried out inside the single board by adopting the method of distinguishing the types of MSP groups, which solves the problem that the information processing speed between the single boards is not timely and the MSP switching time is too long when communicating through the Ethernet in the related technology. It reduces the amount of information communicated between boards and improves the processing efficiency of the system.

Preferably, before step S202, the PTN device analyzes the received information of the MSP group configured by the network management device, and determines the type of the MSP group to which it belongs according to the position of the port in the MSP group, wherein the type of the MSP group includes Intra-board protection group used to indicate that the ports in the MSP group are in the same protection board and inter-board protection group used to indicate that the ports in the MSP group are in different protection boards; if the type of the MSP group is an intra-board protection group , the information of the MSP group configured on the network management device is sent to the line card corresponding to the intra-board protection group; if the type of the MSP group is an inter-board protection group, the information of the MSP group configured on the network management device is sent to main control board. The method can send the MSP group information configured by the user on the network management device to the PTN device, so that the PTN device can identify the ports belonging to different groups, and process them separately, improving the flexibility of the system.

Preferably, in step S204, the line card may instruct the ports in the protection group on the board to perform switching when it is determined that switching is required according to the alarm information reported by the ports. This method can improve the accuracy and effectiveness of the system.

Preferably, in step S204, after the line card transmits the alarm information to the main control board of the PTN device through inter-board communication, the main control board can instruct ports in the inter-board protection group to switch over through inter-board communication. The method can only process the ports in the inter-board protection group, reduces the interactive messages between the main control board and the line card, and improves the system efficiency.

Preferably, the inter-board communication method in step S204 may include a message queue. The method is simple, practical and highly operable.

Corresponding to the above method, the embodiment of the present invention also provides a PTN device. Fig. 3 is a structural block diagram of a PTN device according to an embodiment of the present invention. As shown in Fig. 3 , the PTN device 30 includes a main control board 32 and a plurality of line cards 34, wherein each line card 34 Including: an MSP group type judging module 342, which is used to judge whether the type of the multiplex section protection MSP group to which the port belongs is an intra-board protection group after receiving the alarm information reported by its own port; an intra-board switching decision module 344, coupled To the MSP group type judging module 342, for when the MSP group type judging module 342 determines that the type of the MSP group is an intra-board protection group, the port in the in-board protection group of the instruction board is switched; and in the MSP group type judging module 342 When it is determined that the type of the MSP group is not an intra-board protection group, the alarm information is transmitted to the main control board 32 through inter-board communication.

Through the above-mentioned PTN device 30, the decision-making and switching of the protection group in the board are carried out inside the board by adopting the method of distinguishing the types of MSP groups, which solves the problem of untimely information processing speed between boards and MSP switching in the related art when communicating via Ethernet The problem of too long time reduces the amount of information communicated between the boards and improves the processing efficiency of the system.

Fig. 4 is the structural block diagram of the PTN equipment according to the preferred embodiment of the present invention, as shown in Fig. 4, main control board 32 comprises: analysis module 42, is used for analyzing the information of the MSP group that the network management equipment configuration that receives receives, And according to the position of the port in the MSP group, determine the type of the MSP group to which it belongs, wherein the type of the MSP group includes an intra-board protection group used to indicate that the ports in the MSP group are in the same protection board and an internal protection group used to indicate that the MSP Ports in the group are inter-board protection groups in different protection boards; the processing module 44 is coupled to the analysis module 42, the intra-board switching decision module 344 and the inter-board switching decision module 322, and is used to determine the MSP group to which the analysis module 42 belongs In the case of an intra-board protection group, the information of the MSP group configured by the network management device is sent to the line card corresponding to the intra-board protection group; In the case of a group, the information of the MSP group configured by the network management device is sent to the inter-board switching decision module 322.

Preferably, the main control board 32 further includes: an inter-board switching decision module 322, coupled to the intra-board switching decision module 344 and the processing module 44, for receiving the above-mentioned alarm information sent by the intra-board switching decision module 344, through The inter-board communication mode instructs the ports in the inter-board protection group to switch.

Preferably, the intra-board switching decision module 344 is also configured to instruct the ports in the intra-board protection group to perform switching when it is determined that switching is required according to the reported alarm information of the ports.

Preferably, the inter-board switching decision module 322 is also configured to instruct ports in the inter-board protection group to perform switching through a message queue.

In addition, the embodiment of the present invention also provides a switching system for multiplex section protection. Fig. 5 is a structural block diagram of a multiplex section protection switching system according to an embodiment of the present invention. As shown in Fig. 5, the multiplex section protection switching system 50 includes a network configuration device 52 and the above-mentioned PTN device 30, wherein the network configuration The device 52 includes: a setting module 522 , coupled to the PTN device 30 , configured to configure the information of the multiplex section protection MSP group, and the information will be delivered to the PTN device 30 .

The implementation process of the above-mentioned embodiments will be described in detail below in conjunction with preferred embodiments and accompanying drawings.

Preferred embodiment one

Fig. 6 is a schematic diagram of the framework of the MSP processing scheme according to the preferred embodiment 1 of the present invention. As shown in Fig. 6, the processing framework of this embodiment can be divided into two parts: configuration phase and MSP switching processing phase. Specifically, the configuration phase may include the following steps:

Step 1, the network management unit sets the MSP protection group information, and sends the information to the protection group information analysis unit.

Step 2, the protection group information analysis unit analyzes the received MSP protection group information, if the ports in the protection group involve multiple protection boards, go to step 3; if the ports in the protection group are in the same board, go to Step 4.

In step 3, the protection group information analysis unit transmits the protection group information to the MSP inter-board switching decision unit.

In step 4, the protection group information analysis unit transmits the protection group information to the switching decision unit in the MSP board.

As for the MSP switching processing stage, the following can be described according to inter-board switching and intra-board switching respectively.

① Inter-board switching process: The ports in the inter-board protection group transmit the state information to the MSP inter-board switching decision-making unit (that is, corresponding to information B in Figure 6) through inter-board communication. The MSP inter-board switching decision-making unit will The analysis result is transmitted to the ports in the inter-board protection group through inter-board communication (that is, corresponding to information A in FIG. 6 ).

②Intra-board switching process: the ports in the intra-board protection group directly notify the MSP in-board switching decision-making unit of the state information (that is, corresponding to information D in Figure 6), and the MSP in-board switching decision-making unit directly transmits the analysis results to Each port (that is, corresponding to information C in FIG. 6 ).

It can be seen that in this embodiment, the MSP protection area is divided into intra-board protection and inter-board protection, wherein, the decision-making and switching of intra-board protection are performed inside the single board, and since there is no need for information interaction between multiple single boards, the processing efficiency is very high. Greatly improved; the decision-making and switching of inter-board protection are basically the same as the processing in the related art, but because the amount of information communicated between the single boards is reduced, the effect of improving the efficiency of MSP switching is achieved.

Preferred embodiment two

In this embodiment, the PTN equipment is taken as an example to describe the processing flow of the switching method of the multiplex section protection in detail. Here, it is assumed that two MSP protection groups need to be set. One protection group A includes port 1 and port 2 of line card a, and the other protection group B includes port 3 of line card a and port 2 of line card b. Fig. 7 is the schematic diagram according to the PTN equipment MSP processing framework of preferred embodiment 2 of the present invention, as shown in Fig. 7, configuration step can comprise the following steps:

In step S702, the network management unit configures the MSP protection group, and the information is delivered to the protection group information analysis unit, and the procedure goes to step S704.

In step S704, the protection group information analysis unit judges that protection group A belongs to intra-board switching according to the position of the port in the protection group, and proceeds to step S706; judges that protection group B belongs to inter-board switching, and proceeds to step S710.

In step S706, the protection group information analysis unit sends the information of protection group A to line card a, and the process goes to step S708.

In step S708, an MSP protection group A is established in line card a, and a decision-making unit ProcA is created.

In step S710, the protection group information analysis unit sends the protection group B information to the main control, and then proceeds to step S712.

In step S712, an MSP protection group B is established in the master control, and a decision-making unit ProcB is created.

Switching steps can include:

①In protection group A, port 1 and port 2 of line card a detect the port receiving information, and then pass it to the decision-making unit ProcA, and ProcA decides whether to perform switching, and notifies the two ports of the sending information.

②In protection group B, port 3 of line card a and port 2 of line card b receive information, and then pass it to the main control in the form of a message queue. After the main control parses the message queue, it passes it to ProcB, and ProcB decides whether to switch , and then send the switching information to line card a and line card b respectively through the message queue, and finally line card a and line card b respectively parse the message queue information and transmit it to their respective ports.

It should be noted that the intra-board protection group in the embodiment of the present invention refers to the configured MSP protection, and the ports involved are in the same protection board; the inter-board protection group refers to the configured MSP protection, and the involved ports Protection groups of ports in different protection boards; intra-board switching refers to the switching that occurs in the intra-board protection group; inter-board switching refers to the switching that occurs in the inter-board protection group.

To sum up, the embodiment of the present invention relates to equipment that needs to perform multiplex section protection in the optical communication industry, and provides a method for improving the efficiency of multiplex section protection switching. The decision-making and switching are carried out inside the single board, which solves the problems of untimely communication processing speed between single boards and too long MSP switching time in related technologies, reduces the amount of information communicated between single boards, and improves the processing efficiency of the system.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Optionally, they can be implemented with program codes executable by computing devices, so that they can be stored in storage devices and executed by computing devices, or they can be made into individual integrated circuit modules, or their Multiple modules or steps are implemented as a single integrated circuit module. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A switching method for multiplex section protection, characterized in that, comprising the following steps: After the line card of the packet transmission network PTN equipment receives the reported alarm information of its port, it is judged whether the type of the multiplex section protection MSP group to which the port belongs is an intra-board protection group; If yes, the line card instructs the ports in the intra-board protection group to switch; otherwise, the line card transmits the alarm information to the main control board of the PTN device through inter-board communication. 2. The method according to claim 1, wherein, before the line card receives the reported alarm information of its port, further comprising: The PTN device analyzes the received information of the MSP group configured by the network management device, and determines the type of the MSP group to which it belongs according to the position of the port in the MSP group, wherein the type of the MSP group includes an indicator for indicating The ports in the MSP group are in the intra-board protection group in the same protection board and the inter-board protection group used to indicate that the ports in the MSP group are in different protection boards; If the type of the MSP group is an intra-board protection group, then send the information of the MSP group configured by the network management device to the line card corresponding to the intra-board protection group; if the type of the MSP group is an inter-board protection group, then send the information of the MSP group configured by the network management device to the main control board. 3. The method according to claim 1, wherein if the type of the MSP group is an intra-board protection group, the line card instructing the ports in the intra-board protection group to switch comprises: The line card instructs the ports in the on-board protection group to perform switching when determining that switching is required according to the alarm information reported by the ports. 4. The method according to claim 2 or 3, wherein, after the line card transmits the alarm information to the main control board of the PTN device through inter-board communication, further comprising: The main control board instructs the ports in the inter-board protection group to switch over through the inter-board communication mode. 5. The method according to any one of claims 1 to 4, characterized in that, the inter-board communication method includes a message queue. 6. A packet transmission network PTN device, characterized in that it comprises a main control board and a plurality of line cards, wherein each line card in the plurality of line cards comprises: The MSP group type judging module is used to judge whether the type of the multiplex section protection MSP group to which the port belongs is an in-board protection group after receiving the alarm information reported by its own port; An intra-board switching decision module, configured to instruct ports in the intra-board protection group to switch when the MSP group type judging module determines that the type of the MSP group is an intra-board protection group; and at the MSP When the group type judging module judges that the type of the MSP group is not the intra-board protection group, it transmits the alarm information to the main control board through inter-board communication. 7. The PTN device according to claim 6, wherein the main control board comprises: An analysis module, configured to analyze the received information of the MSP group configured by the network management device, and determine the type of the MSP group to which it belongs according to the position of the port in the MSP group, wherein the type of the MSP group includes An intra-board protection group for indicating that the ports in the MSP group are in the same protection board and an inter-board protection group for indicating that the ports in the MSP group are in different protection boards; A processing module, configured to deliver the information of the MSP group configured by the network management device to the on-board protection group when the analyzing module determines that the type of the MSP group it belongs to is an on-board protection group the corresponding line card; and when the analysis module determines that the type of the MSP group to which it belongs is an inter-board protection group, sending information about the MSP group configured by the network management device to an inter-board switching decision module. 8. PTN equipment according to claim 7, is characterized in that, described main control board also comprises: The inter-board switching decision-making module is configured to, after receiving the alarm information sent by the intra-board switching decision-making module of the line card, instruct the The port is switched. 9. The PTN device according to claim 6, wherein the in-board switching decision-making module is further configured to indicate the in-board protection group in the case of determining that switching needs to be performed according to the alarm information reported by its port The ports in the switch are switched. 10. A switching system for multiplex section protection, characterized in that it comprises a network configuration device and the PTN device according to any one of claims 6 to 9, wherein, The network configuration device includes: a setting module, configured to configure the information of the multiplex section protection MSP group, and the information will be delivered to the PTN device.

Images