CN1984017A - Method and system for reversing main-equipment with interconnected single-board - Google Patents

Abstract

The invention discloses an active/standby switchover system and method for interconnected single boards in the whole network. The single boards include a main control board, a service processing single board, a protection business processing single board, an outgoing interface single board, and a protection outgoing interface single board. The outgoing interface single board includes a main outgoing interface module and a main cross-connect module; the main outgoing interface module is used to provide a high-speed service interface according to system services; the main cross-connect module is used to switch control signals according to the main control board Realize active/standby switchover between the service processing single board and the protection service processing single board; the protection outgoing interface single board includes an auxiliary cross-connect module, which is used to switch the outgoing interface from the outgoing interface according to the switching control signal of the main control board. The system services provided by the interface board to the service processing board are switched to the protection service processing board. The invention can better meet the main-standby switching requirement of a single board with a high-speed interface.

Description

Active-standby switchover system and method for whole-network interconnected single boards

technical field

The invention relates to the technical field of active/standby switching, in particular to an active/standby switching system and method using a single board under the whole network interconnection architecture.

Background technique

For carrier-class network equipment, high reliability is the most important performance index. High reliability includes performance requirements such as redundant backup, hot swap, and comprehensive fault management (fault detection, diagnosis, isolation, recovery, and alarm, etc.). The interconnection of hardware modules is the key to determining the reliability of network equipment. Nowadays, the interconnection of hardware modules through switching networks has become an ideal choice for high-reliability systems; moreover, key modules in network equipment need backup protection, such as the main control board Generally, 1+1 backup protection is adopted, and the SFU generally adopts 1+1/N+1 backup protection, where N is a natural number.

As shown in FIG. 1 , it is a schematic diagram of a system for realizing master-standby switchover of a single board in a switching network. The single boards include outgoing interface single boards 121, 122, 123, protection outgoing interface single board 124, business processing single boards 131, 132, 133 and protection business processing single board 134, and outgoing interface single boards 121, 122, 123 are used as system outgoing lines , and transmit the system services to the service processing boards 131 , 132 , 133 , and the service processing boards 131 , 132 , 133 perform service processing. Wherein, the protection service processing single board 134 and the protection outgoing interface single board 124 each occupy a slot in the backplane, each outgoing interface single board has a single-pole double-throw relay, and the protection outgoing interface single board 124 has a single-pole three-throw relay; Each outgoing interface board sends the received signal to the service processing board in this slot. Moreover, each outgoing interface single board is connected to the main control board 110; if one or more business processing single boards fail, for example, the business processing single board 131 fails, then the main control board 110 detects the failure signal and controls the failure signal. The egress interface board 121 and the protection egress interface board 124 perform active/standby switchover. As shown in Figure 1, when the business processing board 132 fails, the main control board 110 controls the switching of the relay on the outgoing interface board 122 to the switch 2, and simultaneously controls the switching of the relay on the protection outgoing interface board 124 to the switch 2, that is Active/standby switching between the service processing single board 132 and the protection service processing single board 134 can be realized.

Figure 1 is actually a switching protection system that uses Tributary Protect Switch (TPS for short) technology to realize the configuration of protection service boards and service boards according to 1:3. It should be noted that this technology only protects the service processing board 131 and does not protect the outgoing interface board 121 . The main reason is that the outgoing interface board 121 is relatively simple and only serves as a system outlet function. Compared with the service processing board 131, the possibility of failure is negligible, while the business processing board 131 is relatively more complicated, and the probability of failure is also lower. It is much larger; even if the outbound interface single board 121 fails, it can be resolved through network-level protection methods, such as backup paths, link aggregation, dual-homing, and ring network protection.

However, in some network equipment applications, the demand for network equipment capacity is not large. From the perspective of cost performance, it is more suitable to use full mesh interconnection (Full Mesh), that is, the single boards in the network equipment are directly connected to each other through the backplane. even. At this time, if the TPS technology shown in Figure 1 is used to implement the active/standby switchover of the single board, the following technical defects exist:

1. The use of relays cannot solve the active/standby switchover of high-speed interfaces such as GE/10GE.

The currently used relay technology can protect low-speed services such as E1/T1/E3, but cannot support high-speed services such as GE/10GE.

2. When there are many ports on the outgoing interface board, the backplane design is complicated and the cost is high;

Because each interface needs to send the signal to the protection output interface board and the working service board at the same time through the backplane connection. The interface board also puts forward higher requirements, and the protection outbound interface board needs to support all outbound interfaces, which poses severe challenges to the board area and reliability.

Contents of the invention

The invention provides an active-standby switchover system and method for a full-network interconnection single board, which solves the problems of active-standby switchover of a high-speed service interface in a full-network interconnection single-board, complicated design of a backplane, and high cost.

The present invention proposes an active-standby switchover system for interconnected single boards in the entire network. The single boards include a main control board, a business processing board, a protection business processing board, an outgoing interface board, and a protection outgoing interface board. The outgoing interface single board includes the main outgoing interface module and the main cross-connect module;

The main outgoing interface module is used to provide a high-speed service interface according to system services;

The main cross-connect module is used to implement the active/standby switching between the service processing single board and the protection service processing single board according to the switching control signal of the main control board;

The protection outgoing interface single board includes an auxiliary cross-connect module, which is used to switch the system services provided by the outgoing interface single board to the service processing single board to the protection service processing unit according to the switching control signal of the main control board plate.

The main outgoing interface module includes a main interface processing module and a main interface conversion module;

The main interface processing module is used to provide a low-speed service interface according to system services;

The main interface conversion module is used to convert the low-speed service interface provided by the main interface processing module to a high-speed service interface.

The protection output interface single board also includes an auxiliary output interface module, and the auxiliary output interface module includes an auxiliary interface processing module and an auxiliary interface conversion module;

The auxiliary interface processing module is used to provide a low-speed service interface according to system services;

The auxiliary interface conversion module is used to convert the low-speed service interface provided by the auxiliary interface processing module to a high-speed service interface.

The protection service processing single board and the service processing single board are configured according to 1:N.

The service processing single board is backed up according to 1+1 or N+1.

Correspondingly, the present invention proposes an active/standby switchover method for a whole network interconnection board, which is used to realize active/standby switchover between a service processing board and a protection service processing board, including the following processing steps:

The main control board sends a switching control signal according to the detected failure of the service processing single board, the outgoing interface single board receives the switching control signal, and the main cross-connect module of the outgoing interface single board transmits system services through the protection outgoing interface single The auxiliary cross-connect module of the board is switched to the protection service processing single board.

The method of the present invention also includes the following processing steps: the protection service processing single board partially or completely interrupts the original system service, and processes the system service switched by the outgoing interface single board.

The protection service processing single board and the service processing single board are configured according to 1:N.

The service processing single board is backed up according to 1+1 or N+1.

Compared with the prior art, the present invention has the following beneficial effects:

1. Since the present invention adopts an interface conversion module in the outgoing interface single board and the protection outgoing interface single board, the interface conversion module can convert the low-speed interface into a high-speed interface, thereby overcoming the problem of main-standby switching of relays adopted in the prior art. Defects that do not apply to high-speed interfaces.

2. The present invention adopts to replace the relay in the prior art for the cross module (such as the cross module of the Crosspoint chip) to carry out active-standby switchover, because the cross module has the function of providing higher speed and more interfaces, therefore, when adopting full In the network interconnection single-board system, the number of signal connections between the single board and the backplane can be effectively reduced, and the complexity of the backplane design is indirectly reduced, thereby reducing the cost of the backplane;

Description of drawings

FIG. 1 is a schematic diagram of a system for realizing active/standby switchover of a single board in an existing switching network.

Fig. 2 is a schematic diagram of the active/standby switching system of the whole network interconnection single board according to the present invention.

FIG. 3 is a schematic diagram of an outbound interface board in the active/standby switching system of the whole network interconnected board in FIG. 2 according to the present invention.

FIG. 4 is a schematic diagram of the protection egress single board in the active/standby switching system of the whole network interconnected single board in FIG. 2 according to the present invention.

Fig. 5 is a schematic flow chart of the master/standby switching method of the whole network interconnection single board according to the present invention.

Detailed ways

Please refer to FIG. 2 , which is a schematic diagram of an active/standby switching system of interconnected single boards in the whole network according to the present invention. The single board includes a main control board 210, service processing single boards 220, 230, protection service processing single board 240, output interface single boards 250, 260, and protection output interface single board 270, and the service processing single boards 220, 230 and The protection service processing single board 240 is interconnected through the whole network, and the main control board 210 is respectively connected with the outgoing interface single boards 250 and 260 and the protection outgoing interface single board 270 .

Please refer to FIG. 3 and FIG. 4 , which are schematic diagrams of the outbound interface board and the protection outbound interface board in the active/standby switching system of the whole network interconnected boards of the present invention, respectively.

Taking the outgoing interface single board 250 as an example in combination with FIG. 2, the active-standby switching system of the whole network interconnection single board of the present invention is illustrated:

The outgoing interface single board 250 includes a main outgoing interface module 251 and a main cross-connect module 252;

The main outgoing interface module 251 is used to provide a high-speed service interface according to system services;

The main cross-connect module 252 is used to implement the active/standby switching between the service processing board 220 and the protection service processing board 240 according to the switching control signal of the main control board 210 .

The protection outgoing interface board 270 includes an auxiliary outgoing interface module 271, which is used to switch the system service provided by the outgoing interface single board 250 to the service processing single board 220 according to the switching control signal of the main control board 210 to The service processing board 240 is protected.

The main outgoing interface module 251 includes a main interface processing module 253 and a main interface conversion module 254;

The main interface processing module 253 is used to provide a low-speed service interface according to system services;

The main interface conversion module 254 is used to convert the low-speed service interface provided by the main interface processing module 253 to a high-speed service interface;

The protection outgoing interface single board 270 also includes an auxiliary outgoing interface module 271, and the auxiliary outgoing interface module 271 includes an auxiliary interface processing module 273 and an auxiliary interface conversion module 274;

The auxiliary interface processing module 273 is used to provide a low-speed service interface according to system services;

The auxiliary interface conversion module 274 is used to convert the low-speed service interface provided by the auxiliary interface processing module 273 into a high-speed service interface.

When the service processing single board 220 is not faulty, the service processing single board 220 processes system services with higher priority, and the protection service processing single board 240 The interface module 271 and the auxiliary cross-connect module 272 can handle system services with lower priority.

Certainly, the physical structure of the outgoing interface single board 250 and the protection outgoing interface single board 270 may be completely consistent.

The main control board 210 sends a switching control signal according to the detection of the failure of the service processing board 220, and the main cross-connect module 252 of the outbound interface board 250 assigns the system to the service processing board 220 according to the switching control signal. The service is switched to the protection service processing single board 240 through the auxiliary cross-connect module 272 of the protection outgoing interface single board 270; the protection service processing single board 240 will interrupt part or all of the system services currently processed by it to take over the processing The business processed before the outbound interface board 250 fails.

As shown in Figure 2, only the outbound interface board and the service processing board are configured according to 1:1; the protection service processing board and the service processing board are configured according to 1:2, that is, the business processing board is backed up according to 2+1, not As a limit, in practical applications, the protection service processing board and the service processing board can be configured according to 1:N; the service processing board can be backed up according to 1+1 or N+1.

For example, each service processing board can have multiple outbound interface boards with the same structure. Correspondingly, the protection service processing board can have a corresponding number of protection outbound interface boards. The auxiliary cross-connect module of the interface single board is connected, and the main cross-connect module of each outgoing interface single board is connected with the auxiliary cross-connect module of the corresponding protection outgoing interface single board.

In addition, the present invention also discloses an active/standby switchover method for the entire network interconnection board, which is used in the active/standby switchover system for the entire network interconnection board shown in FIG. Describe the active/standby switchover between protection service processing boards. See also shown in Figure 5, this method comprises the following processing steps:

Step s310: the main control board detects a fault (failure) signal of the service processing single board;

Step s320: The main control board sends a switching control signal according to the detected failure of the service processing board, and transmits the switching control signal to the outgoing interface board and the protection outgoing interface board corresponding to the failed business processing board And protect the business processing board;

Step s330: The corresponding outgoing interface board receives the switching control signal, and the cross-connect module of the outgoing interface board switches the system services to the protection service processing board through the cross-connect module of the protection outgoing interface board.

Step s340: The protection service processing board partially or completely interrupts the original system service, and preferentially processes the system service to which the outgoing interface board is switched.

Of course, in the present invention, if a certain failed business processing board returns to normal function status, the main control board will also send a switching control signal according to the detection of the normal function of the business processing board, and the control will be switched to the corresponding The system services of the protection service processing board are switched back to the service processing board for processing, which will not be described in detail here.

The protection service processing single board and the service processing single board are configured according to 1:N; the service processing single board is backed up according to 1+1 or N+1.

In summary, the main interface conversion module and the interface conversion module are used to convert low-speed service interfaces such as E1/T1/E3 to high-speed service interfaces such as GE/10GE, so that the system can realize backup protection for high-speed services; the main cross-connect module and The auxiliary cross-connect module is a cross-connect module using the Crosspoint chip, which provides a higher rate (1G to 4G) and more interfaces such as 34*34, 144*144, etc. Therefore, the use of the main cross-connect module and the auxiliary cross-connect module can greatly reduce system traffic. The number of signals connected between the middle board and the backplane reduces the design difficulty of the backplane, thereby reducing the cost of the backplane.

The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention; therefore, although the specification has described the present invention in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand , the present invention can still be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims (9)

1. the master-slave conversion system of an interconnected single-board, described veneer comprises master control borad, service processing board, protection service processing board, outgoing interface veneer and protection outgoing interface veneer, it is characterized in that described outgoing interface veneer comprises main outgoing interface module and main crossings module;

Described main outgoing interface module provides a high speed business interface;

Described main crossings module realizes masterslave switchover between described service processing board and the described protection service processing board according to the control signal of switching of described master control borad;

Described protection outgoing interface veneer comprises auxiliary Cross module, switching control signal and will be switched to described protection service processing board by the system business that described outgoing interface veneer offers described service processing board according to described master control borad.

2. the master-slave conversion system of interconnected single-board according to claim 1 is characterized in that, described main outgoing interface module comprises main interface processing module and main interface modular converter;

Described main interface processing module is used for providing a low speed business interface according to system business;

Described main interface modular converter is used for the low speed business interface that described main interface processing module provides is converted to the high speed business interface.

3. the master-slave conversion system of interconnected single-board according to claim 1 is characterized in that, described protection outgoing interface veneer also comprises auxiliary outgoing interface module, and this auxiliary outgoing interface module comprises satellite interface processing module and satellite interface modular converter;

Described satellite interface processing module is used for providing a low speed business interface according to system business;

Described satellite interface modular converter is used for the low speed business interface that described satellite interface processing module provides is converted to the high speed business interface.

4. according to the master-slave conversion system of claim 1 or 2 or 3 described interconnected single-boards, it is characterized in that described protection service processing board and described service processing board are according to 1: the N configuration.

5. the master-slave conversion system of interconnected single-board according to claim 4 is characterized in that, described service processing board is according to 1+1 or N+1 backup.

6. the main and standby rearranging method of an interconnected single-board is used to realize the masterslave switchover between service processing board and the protection service processing board, it is characterized in that, comprises following treatment step:

Master control borad sends according to the inefficacy that detects service processing board and switches control signal; described outgoing interface veneer receives the described control signal of switching, and the main crossings module of described outgoing interface veneer is switched system business to described protection service processing board by the auxiliary Cross module of described protection outgoing interface veneer.

7. the main and standby rearranging method of interconnected single-board according to claim 6 is characterized in that, also comprises following treatment step:

Described protection service processing board partly or entirely interrupts original system business, handles the system business that described outgoing interface veneer is switched.

8. the main and standby rearranging method of interconnected single-board according to claim 6 is characterized in that, described protection service processing board and described service processing board are according to 1: the N configuration.

9. the main and standby rearranging method of interconnected single-board according to claim 8 is characterized in that, described service processing board is according to 1+1 or N+1 backup.

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