CN109981427B - Multi-service access network method and system - Google Patents
Multi-service access network method and system Download PDFInfo
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- CN109981427B CN109981427B CN201910252145.3A CN201910252145A CN109981427B CN 109981427 B CN109981427 B CN 109981427B CN 201910252145 A CN201910252145 A CN 201910252145A CN 109981427 B CN109981427 B CN 109981427B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0641—Change of the master or reference, e.g. take-over or failure of the master
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
Abstract
The invention discloses a method and a system for accessing a multi-service network, and relates to the field of communication transmission network access and network control management. The method comprises the following steps: setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed, wherein the service data processing mode comprises an SDH data processing mode and an IP data processing mode; and after the service is accessed, performing service processing through a service data processing mode of the service. The invention can fuse the IP data processing mode and the SDH data mode, thereby realizing that when the service is accessed, if the service needs high time delay precision, the SDH data mode is adopted for service processing; and if the service has higher requirement on the transmission performance, adopting an IP data processing mode.
Description
Technical Field
The invention relates to the field of communication transmission network access and network control management, in particular to a multi-service network access method and a multi-service network access system.
Background
In the face of the trend of integrating network IP and telecommunication network, broadcast network and computer communication network, the services carried on the existing access network are more and more abundant, and the requirements for service transmission quality are higher and higher. Currently, the mainstream technologies that have been fully developed and widely used in transmission and access networks are packet switched networks and radio access packetization. However, at present, the existing transmission and access network still has a certain number of SDH (Synchronous Digital Hierarchy) transmission devices, that is, for some users, the existing transmission and access network still relies on the characteristics of high service safety and reliability of the SDH devices, distributed service access points, various signal interface requirements, complex service access rate, and the like.
Therefore, the current network service data processing modes are an SDH data processing mode and an IP data processing mode with functions of packet switching network and wireless access packetization; however, the 2 modes have the following advantages and disadvantages when used:
for SDH data processing mode:
the advantages of the SDH data processing mode are: the time delay precision is higher, and the strict requirement of a user on the time delay can be met;
the disadvantages of the SDH data processing mode are: based on a rigid pipe mode (VC static particle scheduling, Virtual Container), transmission parameters (such as service scheduling processing efficiency, bandwidth efficiency, and bandwidth) are further solidified, and there is a bottleneck in use.
For the IP data processing mode:
the advantages of the IP data processing mode are: the transmission parameters (service scheduling processing efficiency, bandwidth and the like) can be expanded, and the method is flexible in use and can be suitable for services with higher requirements on transmission performance;
the disadvantages of the IP data processing mode are: the time delay precision is low, and the harsh requirements of users on the time delay are difficult to meet.
Disclosure of Invention
Aiming at the defects in the prior art, the invention solves the technical problems that: how to fuse an IP data processing mode and an SDH data mode, and further realize that when a service is accessed, if the service needs high time delay precision, the SDH data mode is adopted for service processing; and if the service has higher requirement on the transmission performance, adopting an IP data processing mode.
In order to achieve the above object, the method for accessing multiple services provided by the present invention comprises the following steps: setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed, wherein the service data processing mode comprises an SDH data processing mode and an IP data processing mode; and after the service is accessed, performing service processing through a service data processing mode of the service.
On the basis of the above technical solution, the process of setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed includes: when the time delay precision required by the service needing to be accessed is only suitable for the SDH data processing mode, setting the service data processing mode of the current service as the SDH data processing mode; and when the transmission performance required by the service needing to be accessed is only suitable for the IP data processing mode, setting the service data processing mode of the current service as the IP data processing mode.
On the basis of the above technical solution, the process of setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed further includes: when the SDH data processing mode and the IP data processing mode both meet the service to be accessed, setting the service data processing mode according to the requirement of an operator; on this basis, after the service is accessed, the service processing through the service data processing mode of the service includes the following procedures: after the service is accessed, when the type of the service is not suitable for the service data processing mode of the service, the type of the service is converted into the type suitable for the service data processing mode of the service, and then the service is processed through the service data processing mode of the service.
On the basis of the technical scheme, the method comprises the following steps: and providing clock synchronization for all accessed services and service processing processes, wherein the clock source of the clock synchronization is a TDM line clock or a synchronous Ethernet clock.
On the basis of the technical scheme, the method comprises the following steps: and acquiring service information of the access service after the service is accessed, and acquiring service processing information when the access service performs service processing.
The multi-service access network system provided by the invention comprises a main service processing unit and at least one universal service processing module; the main service processing unit comprises a main SDH data processing module, a main SDH data interconnection bus, a main IP data processing module and a main IP data interconnection bus; the main SDH data processing module comprises SDH data interfaces which are in one-to-one correspondence with the general service processing modules, and each SDH data interface and each general service module are connected with a main SDH data interconnection bus; the main IP data processing module comprises IP data interfaces which are in one-to-one correspondence with the universal service processing modules, and each IP data interface and each universal service module are connected with a main IP data interconnection bus;
the universal service module is used for: setting a service processing object for a service to be accessed, wherein the service processing object comprises an SDH data processing module and an IP data processing module; sending the accessed service to a set service processing object;
the main SDH data processing module is used for: receiving the service transmitted by the universal service module through the SDH data interface and then carrying out service processing;
the main IP data processing module: and receiving the independent service transmitted by the universal service module through the IP data interface and then processing the service.
On the basis of the technical scheme, the process of setting a service processing object for the service to be accessed by the universal service module comprises the following steps:
when the time delay precision required by the service needing to be accessed is only suitable for the SDH data processing mode, setting the service processing object of the current service as an SDH data processing module;
when the transmission performance required by the service needing to be accessed is only suitable for the IP data processing mode, setting a service processing object of the current service as an IP data processing module;
when the SDH data processing module and the IP data processing module both meet the service to be accessed, setting a service processing object according to the requirement of an operator;
on this basis, the universal service module is further configured to: after the service is accessed, when the type of the service is not suitable for the service processing object of the service, the type of the service is converted into the type suitable for the service processing object of the service, and then the type is transmitted to the service processing object.
On the basis of the technical scheme, the main service processing unit also comprises a main clock module and a main clock control interconnection bus; the main clock module is respectively connected with the main SDH data processing module, the main IP data processing module and each universal service module through a main clock control interconnection bus;
the main clock module is used for: and clock synchronization is provided for the main SDH data processing module, the main IP data processing module and each universal service module, and the clock source of the clock synchronization is a TDM line clock or a synchronous Ethernet clock.
On the basis of the technical scheme, the main service processing unit also comprises a main management control module and a main management control interconnection bus; the main management control module is respectively connected with the main SDH data processing module, the main IP data processing module and each universal service module through a main management control interconnection bus;
the main management control module is used for: and acquiring the information of the main SDH data processing module, the main IP data processing module and each universal service module.
On the basis of the technical scheme, the system also comprises a standby service processing unit with the same structure as the main service processing unit, wherein the standby service processing unit specifically comprises a standby SDH data processing module with the same structure as the main SDH data processing module and a standby IP data processing module with the same structure as the main IP data processing module; the service processing object in the general service module also comprises a standby SDH data processing module and a standby IP data processing module;
the standby SDH data processing module is used for: the SDH data processing module bears the same or different services as the main SDH data processing module, and the main SDH data processing module carries out main and standby protection switching;
the standby IP data processing module is used for: the same or different service is carried by the main IP data processing module, and the main and standby protection switching is carried out with the main IP data processing module.
Compared with the prior art, the invention has the advantages that:
compared with the prior art in which the SDH or IP data processing mode is used independently, the invention can enable the access service to carry out the service processing of the SDH or IP data processing mode according to the preset service data processing mode, thereby realizing the fusion of the IP data processing mode and the SDH data mode and enabling the 2 modes to carry the service together. This not only obviously improves the flexibility and quality of service (if the service needs high delay precision, it uses SDH data mode to process service, if the service has higher requirement for transmission performance, it uses IP data processing mode), but also makes full use of the existing SDH and IP service access resources, and its application range is wider.
Drawings
Fig. 1 is a model diagram of a multi-service access network system according to an embodiment of the present invention;
fig. 2 is a service model diagram of a multi-service access network system according to an embodiment of the present invention;
fig. 3 is a diagram of management control and clock model of the multi-service access network system in the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The multi-service access network method in the embodiment of the invention comprises the following steps: setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed, wherein the service data processing mode comprises an SDH data processing mode and an IP data processing mode; and after the service is accessed, performing service processing through a service data processing mode of the service.
Therefore, compared with the prior art that the SDH or IP data processing mode is singly used, the invention can lead the access service to carry out the service processing of the SDH or IP data processing mode according to the preset service data processing mode, thereby realizing the fusion of the IP data processing mode and the SDH data mode and leading the 2 modes to carry the service together. This not only obviously improves the flexibility and quality of service (if the service needs high delay precision, it uses SDH data mode to process service, if the service has higher requirement for transmission performance, it uses IP data processing mode), but also makes full use of the existing SDH and IP service access resources, and its application range is wider.
Preferably, the process of setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed includes:
when the time delay precision required by the service needing to be accessed is only suitable for the SDH data processing mode, setting the service data processing mode of the current service as the SDH data processing mode;
when the transmission performance required by the service needing to be accessed is only matched with the IP data processing mode, setting the service data processing mode of the current service as the IP data processing mode;
and when the SDH data processing mode and the IP data processing mode both meet the service to be accessed, setting the service data processing mode according to the requirement of an operator.
On this basis, after the service is accessed, the service processing through the service data processing mode of the service includes the following procedures:
after a service is accessed, when the type of the service is not suitable for the service data processing mode of the service (for example, the accessed service is an SDH service, but the set service data processing mode is an IP data processing mode), the type of the service is converted into a type suitable for the service data processing mode of the service, and then the service is processed through the service data processing mode of the service.
Therefore, the invention sets up the process of setting the service data processing mode meeting the requirements for the service; meanwhile, the invention can realize setting the service data processing mode according to the requirement of the operator through the service conversion function, which obviously reduces the use cost of the operator; for example, the accessed service is also an IP service, but the communication device of the operator is an SDH processing device, and if there is no service conversion function, an additional IP processing device is required.
Preferably, the method for accessing to a network by multiple services in the embodiment of the present invention further includes the following steps: and providing clock synchronization for all accessed services and service processing processes, wherein a clock source of the clock synchronization is a TDM (Time Division Multiplexing) line clock or a synchronous Ethernet clock.
Therefore, the clock source of the invention can fully meet the clock synchronization requirements of various media and application scenes.
Preferably, the method for accessing to a network by multiple services in the embodiment of the present invention further includes the following steps: the service information of the access service is acquired after the service is accessed, and the service processing information is acquired when the access service performs service processing (SDH data processing or IP data processing).
Therefore, the invention can acquire the service information and the service processing information of all the access services in real time, thereby realizing the effective fusion access of the network management information and other networks, being convenient for forming the unified network management topology of the network, further increasing the perception of users, reducing the difficulty of network maintenance and being convenient for positioning network faults.
Referring to fig. 1, a multi-service access network system in the embodiment of the present invention includes a main service processing unit and at least one general service processing module; the main service processing unit comprises a main SDH data processing module, a main SDH data interconnection bus A, a main IP data processing module and a main IP data interconnection bus C; the main SDH data processing module comprises SDH data interfaces which are in one-to-one correspondence (same quantity) with the general service processing modules, and each SDH data interface and each general service module are connected with a main SDH data interconnection bus A; the main IP data processing module comprises IP data interfaces which are in one-to-one correspondence (same quantity) with the universal service processing modules, and each IP data interface and each universal service module are connected with a main IP data interconnection bus C.
The universal service module is used for: setting a service processing object for a service to be accessed, wherein the service processing object comprises an SDH data processing module and an IP data processing module; and sending the accessed service to the set service processing object.
The main SDH data processing module is used for: the method comprises the steps of receiving independent services transmitted by a universal service module through an SDH data interface and then processing the services, wherein the specific service processing mode is the prior art, for example, SDH overhead information is processed, monitoring and management of the SDH services are completed, a VC-level cross mapping function is realized, and a pipeline based on VC-level rate is provided for service access and transmission and the like.
The main IP data processing module: the independent service transmitted by the general service module is received through the IP data interface and then is processed, and the specific service processing mode is the prior art, for example, the exchange and the transmission of IP data are realized, and the independent service has the processing function of a TCP/IP network protocol and the like based on an OSI structure model.
Therefore, compared with the prior art that the SDH or IP data processing mode is singly used (namely, only one bus is used for transmitting IP and SDH services, the time delay precision of transmitting the SDH services by adopting the IP bus is lower, and the transmission performance of transmitting the IP services by adopting the SDH bus is poorer), the SDH and IP services can be respectively transmitted by the independent SDH data interconnection bus and the independent IP data interconnection bus, so that the requirements of the time delay precision required by the SDH services and the transmission performance required by the IP services are met.
Preferably, the process of setting the service processing object for the service to be accessed by the universal service module includes:
when the time delay precision required by the service needing to be accessed is only suitable for the SDH data processing mode, setting the service processing object of the current service as an SDH data processing module;
when the transmission performance required by the service needing to be accessed is only suitable for the IP data processing mode, setting a service processing object of the current service as an IP data processing module;
and when the SDH data processing module and the IP data processing module both meet the service to be accessed, setting a service processing object according to the requirement of an operator.
On this basis, the universal service module is further configured to: after the service is accessed, when the type of the service is not suitable for the service processing object of the service, the type of the service is converted into the type suitable for the service processing object of the service, and then the type is transmitted to the service processing object.
Preferably, as shown in fig. 1, the master service processing unit further includes a master clock module and a master clock control interconnection bus G; referring to fig. 1 and 2, the main clock module is connected to the main SDH data processing module, the main IP data processing module, and each generic service module through a main clock control interconnection bus G.
The main clock module is used for: and clock synchronization is provided for the main SDH data processing module, the main IP data processing module and each universal service module, and the clock source of the clock synchronization is a TDM line clock or a synchronous Ethernet clock.
Preferably, the main service processing unit further includes a main management control module and a main management control interconnection bus E; referring to fig. 1 and 2, the primary management control module is connected to the primary SDH data processing module, the primary IP data processing module, and each generic service module through a primary management control interconnection bus E.
The main management control module is used for: and acquiring the information of the main SDH data processing module, the main IP data processing module and each universal service module.
Therefore, the invention can provide an independent management control module, can realize effective fusion access of network management information and other networks, and is convenient for unified network management topology of ready-made networks.
Preferably, as shown in fig. 1, the multi-service access network system in the embodiment of the present invention further includes a standby service processing unit having the same structure as the main service processing unit, where the standby service processing unit specifically includes a standby SDH data processing module, a standby SDH data interconnection bus B, a standby IP data processing module, and a standby IP data interconnection bus D; the standby SDH data processing module comprises SDH data interfaces with the same number as the universal service processing modules, and each SDH data interface and each universal service module are connected with a standby SDH data interconnection bus B; the standby IP data processing module comprises the same number of IP data interfaces as the number of the universal service processing modules, and each IP data interface and each universal service module are connected with a standby IP data interconnection bus D. The service processing object in the general service module also comprises a standby SDH data processing module and a standby IP data processing module.
The main SDH data processing module and the standby SDH data processing module realize a ring network mechanism and an automatic protection switching mechanism according to the SDH basic principle, can independently bear different SDH services and can also bear the same SDH services at the same time; the main and standby IP data processing modules realize a ring network mechanism and an automatic protection switching mechanism according to the basic principle of an IP data network, can independently bear different IP services and can bear the same IP services at the same time, and the processing of the mode can better realize the main and standby switching function of an access network system.
Referring to fig. 2, the primary SDH data processing module is connected to the backup SDH data processing module through a primary and backup interconnection path I, the primary IP data processing module is connected to the backup IP data processing module through a primary and backup interconnection path J, and the primary and backup interconnection paths are used to implement a primary and backup synchronization function.
Referring to fig. 1 and fig. 3, the standby service processing unit further includes a standby clock module and a standby clock control interconnection bus H; the standby clock module is connected to the main and standby SDH data processing modules, the main and standby IP data processing modules, and each general service module through a standby clock control interconnection bus H, respectively, that is, the clock control interconnection bus interface of the standby clock module has N (the number of general service modules, in this embodiment, 20) +4 (the main and standby SDH data processing modules and the main and standby IP data processing modules), and the main clock module is the same as the main clock module.
At this time, as shown in fig. 3, the main clock module is connected with the standby clock module through a main clock control interconnection bus G, and the standby clock module is connected with the main clock module through a standby clock control interconnection bus H, so that the clock information synchronization function in the network can be effectively realized; the main clock module and the standby clock module are used for: and providing clock synchronization for the main and standby SDH data processing modules, the main and standby IP data processing modules and each universal service module.
Referring to fig. 1 and fig. 3, the standby service processing unit further includes a standby management control module and a standby management control interconnection bus F; the standby management control module is respectively connected with the main and standby SDH data processing modules, the main and standby IP data processing modules and each universal service module through a standby management control interconnection bus F, namely, a management control interconnection bus interface of the standby management control module is N +4, and the main management control module is used for the same purpose.
At this time, referring to fig. 3, the main management control module is connected with the standby management control module through a main management control interconnection bus E, and the standby management control module is connected with the main management control module through a standby management control interconnection bus F, so that the clock information synchronization function in the network can be effectively solved; the main management control module and the standby management control module are used for: and acquiring information of the main and standby SDH data processing modules, the main and standby IP data processing modules and each universal service module.
The application scene of the invention is preferably an access convergence layer of a communication network, can be used for independent networking and provides the requirements of various service data signals, network management signals and clock control signals required by the independent networking; meanwhile, the access network system of the invention is suitable for the great trend of three-in-one network, integrates various requirements of operator network and industry network access transmission, and can well meet the development and popularization of telecommunication network, broadcast network and computer network.
It should be noted that: in the system provided in the embodiment of the present invention, when performing inter-module communication, only the division of each functional module is illustrated, and in practical applications, the above function distribution may be completed by different functional modules as needed, that is, the internal structure of the system is divided into different functional modules to complete all or part of the above described functions.
Further, the present invention is not limited to the above-mentioned embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (7)
1. A multi-service access network method, comprising: setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed, wherein the service data processing mode comprises an SDH data processing mode and an IP data processing mode; after the service is accessed, the service is processed through the service data processing mode of the service;
the process of setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed comprises the following steps: when the time delay precision required by the service needing to be accessed is only suitable for the SDH data processing mode, setting the service data processing mode of the current service as the SDH data processing mode; when the transmission performance required by the service needing to be accessed is only matched with the IP data processing mode, setting the service data processing mode of the current service as the IP data processing mode;
the process of setting a service data processing mode for the service to be accessed according to the service information of the service to be accessed further comprises: when the SDH data processing mode and the IP data processing mode both meet the service to be accessed, setting the service data processing mode according to the requirement of an operator; on this basis, after the service is accessed, the service processing through the service data processing mode of the service includes the following procedures: after the service is accessed, when the type of the service is not suitable for the service data processing mode of the service, the type of the service is converted into the type suitable for the service data processing mode of the service, and then the service is processed through the service data processing mode of the service.
2. The multi-service access network method of claim 1, wherein the method comprises the steps of: and providing clock synchronization for all accessed services and service processing processes, wherein the clock source of the clock synchronization is a TDM line clock or a synchronous Ethernet clock.
3. A multi-service access network method according to claim 1 or 2, characterised in that the method comprises the steps of: and acquiring service information of the access service after the service is accessed, and acquiring service processing information when the access service performs service processing.
4. A multi-service access network system comprises a main service processing unit and at least one universal service processing module; the method is characterized in that: the main service processing unit comprises a main SDH data processing module, a main SDH data interconnection bus, a main IP data processing module and a main IP data interconnection bus; the main SDH data processing module comprises SDH data interfaces which are in one-to-one correspondence with the general service processing modules, and each SDH data interface and each general service module are connected with a main SDH data interconnection bus; the main IP data processing module comprises IP data interfaces which are in one-to-one correspondence with the universal service processing modules, and each IP data interface and each universal service module are connected with a main IP data interconnection bus;
the universal service module is used for: setting a service processing object for a service to be accessed, wherein the service processing object comprises an SDH data processing module and an IP data processing module; sending the accessed service to a set service processing object;
the main SDH data processing module is used for: receiving the service transmitted by the universal service module through the SDH data interface and then carrying out service processing;
the main IP data processing module: receiving the independent service transmitted by the universal service module through an IP data interface and then processing the service;
the process of setting a service processing object for the service needing to be accessed by the universal service module comprises the following steps:
when the time delay precision required by the service needing to be accessed is only suitable for the SDH data processing mode, setting the service processing object of the current service as an SDH data processing module;
when the transmission performance required by the service needing to be accessed is only suitable for the IP data processing mode, setting a service processing object of the current service as an IP data processing module;
when the SDH data processing module and the IP data processing module both meet the service to be accessed, setting a service processing object according to the requirement of an operator;
on this basis, the universal service module is further configured to: after the service is accessed, when the type of the service is not suitable for the service processing object of the service, the type of the service is converted into the type suitable for the service processing object of the service, and then the type is transmitted to the service processing object.
5. The multi-service access network system of claim 4, wherein: the main service processing unit also comprises a main clock module and a main clock control interconnection bus; the main clock module is respectively connected with the main SDH data processing module, the main IP data processing module and each universal service module through a main clock control interconnection bus;
the main clock module is used for: and clock synchronization is provided for the main SDH data processing module, the main IP data processing module and each universal service module, and the clock source of the clock synchronization is a TDM line clock or a synchronous Ethernet clock.
6. The multi-service access network system of claim 4, wherein: the main service processing unit also comprises a main management control module and a main management control interconnection bus; the main management control module is respectively connected with the main SDH data processing module, the main IP data processing module and each universal service module through a main management control interconnection bus;
the main management control module is used for: and acquiring the information of the main SDH data processing module, the main IP data processing module and each universal service module.
7. The multi-service access network system according to any one of claims 4 to 6, wherein: the system also comprises a standby service processing unit with the same structure as the main service processing unit, wherein the standby service processing unit specifically comprises a standby SDH data processing module with the same structure as the main SDH data processing module and a standby IP data processing module with the same structure as the main IP data processing module; the service processing object in the general service module also comprises a standby SDH data processing module and a standby IP data processing module;
the standby SDH data processing module is used for: the SDH data processing module bears the same or different services as the main SDH data processing module, and the main SDH data processing module carries out main and standby protection switching;
the standby IP data processing module is used for: the same or different service is carried by the main IP data processing module, and the main and standby protection switching is carried out with the main IP data processing module.
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