WO2015131722A1

WO2015131722A1 - Interface card and control method

Info

Publication number: WO2015131722A1
Application number: PCT/CN2015/071650
Authority: WO
Inventors: 毕杰
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-10-17
Filing date: 2015-01-27
Publication date: 2015-09-11
Also published as: CN105577389A

Abstract

An interface card is disclosed in an embodiment of the present invention. The card comprises: an interface card backplane module used for connecting to a line card motherboard of an aggregation device or to a backplane of an access device; a control module; a local CPU module; a service processing module, and an external communication interface. The interface card backplane module comprises: a status interface, a control interface, and a service interface. The control module determines, according to a machine rack-type indicator signal obtained by the status interface, whether the interface card backplane module is currently connected to a line card motherboard of an aggregation device or to a backplane of an access device; if connected to a line card motherboard of an aggregation device, then the control module switches the service-channel control channel to an external control channel; if connected to a backplane of an access device, then the control module switches the service-channel control channel to a local control channel. A control method is also provided in an embodiment of the present invention.

Description

Interface card and control method

Technical field

The present invention relates to the field of data communications, and in particular, to an interface card and a control method.

Background technique

At present, the Internet Protocol Radio Access Network (IPRAN) generally includes three parts: a backbone network, a metropolitan area network, and an access network. Communication equipment manufacturers have launched different series of products for each of these three parts to meet the needs of different devices. For example, an interface card for the core aggregation device facing the IPRAN is launched for the backbone network, and an interface card for the 300 mm deep chassis access device in the access device facing the IPRAN is introduced for the access network. However, since the two devices are physically incompatible with each other, the interface cards of different devices cannot be used interchangeably. That is, the same interface card cannot be compatible with the core aggregation device and the access device.

Summary of the invention

In view of this, embodiments of the present invention are directed to providing an interface card and a control method for implementing compatibility of an interface card with a core aggregation device and an access device.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

The first aspect of the present invention provides an interface card, including: an interface card backplane template, a control module, a local CPU module, a service processing module, and an external communication interface; the interface card backplane module is used for the convergence device line. The card mother board or the access device backplane is connected; the interface card backplane module includes: a status interface, a control interface, and a service interface; the service interface is connected to the service processing module, and the service processing module and the external a communication interface is connected to form a service channel of the interface card; the control interface is connected to the control module to form an external control channel of the interface card; the control module is connected to the local CPU module to form the interface a local control channel of the card; the control module further interfaces with the state and the service processing module connection;

The control module obtains a rack type indication signal by the status interface, and determines, according to the rack type indication signal, that the interface card backplane module is currently connected to the convergence device line card motherboard, The control channel of the service channel is switched to the external control channel, so that the aggregation device line card motherboard can initialize the service processing module through the external control channel; based on the frame type indication signal, When the interface card backplane module is currently connected to the access device backplane, the control channel of the service channel is switched to the local control channel, so that the local CPU module passes the local control channel pair. The service processing module performs initial configuration.

In the above solution, the interface card backplane template further includes: an outband communication interface connected to the local CPU module to form an outband communication channel of the interface card.

In the above solution, the interface card further includes: a bridge module, which is respectively connected to the control interface and the control module, and constitutes the external control channel.

In the above solution, when the control interface is a PCI-E interface, the control module includes: a first interface conversion module, a second interface conversion module, an LBS switching module, and a reset circuit module; wherein the bridge module and the The first interface conversion module is connected; the first interface conversion module is connected to the LBS switching module; the LBS switching module is respectively connected to the second interface conversion module, the state interface, and the service processing module; The second interface conversion module is connected to the local CPU module; the reset circuit module is respectively connected to the bridge module, the first interface conversion module, the second interface conversion module, the LBS switching module, and the The local CPU module and status interface are connected.

In a second aspect, the embodiment of the present invention provides a control method, which is applied to an interface card, where the interface card includes an interface card backplane template, a control module, a local CPU module, and a service processing module; and the interface card backplane module includes a state interface, a control interface, and a service interface; the control module is connected to the control interface to form an external control channel of the interface card; the control module is connected to the local CPU module to form a local interface card Control channel The control module is connected to the service interface to form a service channel of the interface card; the method includes: the control module obtains a rack type indication signal by the status interface; and the control module is based on the rack type indication After the signal is determined that the interface card backplane module is currently connected to the aggregation device line card motherboard, the control channel of the service channel is switched to the external control channel, so that the convergence device line card motherboard can pass The external control channel performs initial configuration on the service processing module; the control module determines, after the interface card backplane module is currently connected to the access device backplane, based on the rack type indication signal, The control channel of the service channel is switched to the local control channel, so that the local CPU module performs initial configuration on the service processing module through the local control channel.

In the above solution, the control module switches the control channel of the service channel to the external control channel, including: the control module controls the local CPU module to reset, and controls the service processing module to reset, so as to The control channel of the service channel is switched to the external control channel.

In the above solution, the interface card further includes a bridge module, is disposed in the external control channel, and is respectively connected to the control interface and the control module; the control module switches the control channel of the service channel to The external control channel includes: the control module controls the local CPU module to reset, and controls the bridge module and the service processing module to reset to switch the control channel of the service channel to the external control aisle.

In the above solution, the control module switches the control channel of the service channel to the local control channel, and the control module controls the local CPU module and the service processing module to reset to perform the service. The control channel of the channel is switched to the local control channel.

In the above solution, the interface card further includes a bridge module, is disposed in the external control channel, and is respectively connected to the control interface and the control module; the control module switches the control channel of the service channel to The local control channel includes: the control module controls the local CPU module and the service processing module to reset, and controls the bridge module to reset to switch the control channel of the service channel to the external control aisle.

The embodiment of the invention provides an interface card and a control method. The interface card includes: an interface card backplane template, a control module, a local CPU module, and a service processing for connecting to the aggregation device line card motherboard or the access device backplane. The module and the external communication interface; the interface card backplane module includes: a status interface, a control interface, and a service interface; wherein, the control module determines the interface card backplane module current and the convergence device line card motherboard according to the rack type indication signal obtained by the state interface The connection is still connected to the access device backplane; if it is connected to the aggregation device line card motherboard, the control channel of the service channel is switched to the external control channel; if connected to the access device backplane, the control channel of the service channel is switched. For the local control channel, that is, the control module can determine which device is currently connected according to the rack type indication signal sent by the status interface, and then select the corresponding control channel for initial configuration, thus implementing the interface card for core aggregation. The device is compatible with the access device.

DRAWINGS

1 is a schematic structural diagram of an interface card according to an embodiment of the present invention;

2 is a schematic diagram of a connection relationship between a line card motherboard of an aggregation device and an interface card according to an embodiment of the present invention;

3 is a schematic diagram of a connection relationship between an access device backplane and an interface card according to an embodiment of the present invention;

4 is a schematic diagram of a connection manner between a control interface and a control module according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a working process of an interface card according to an embodiment of the present invention;

6 is a schematic structural diagram of an interface card in a PCI-E interface when the control interface is in the embodiment of the present invention;

FIG. 7 is a schematic diagram of a working process of an interface card in a PCI-E interface when the control interface is in the embodiment of the present invention;

FIG. 8 is a schematic flowchart diagram of a control method in an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

The embodiment of the invention provides an interface card, which can be inserted on the motherboard of the aggregation device line card or inserted on the backplane of the access device.

FIG. 1 is a schematic structural diagram of an interface card according to an embodiment of the present invention. Referring to FIG. 1 , the interface card includes: an interface card backplane template 11 , a control module 12 , and a central processing unit (CPU) module 13 . The service processing module 14 and the external communication interface 15; wherein the interface card backplane module 11 is connected to the aggregation device line card motherboard or the access device backplane; the interface card backplane module 11 includes: a status interface 111, a control interface 112, Service interface 113.

In this embodiment, the service interface 113 is connected to the service processing module 14, and the service processing module 14 is connected to the external communication interface 15, so that the service interface 113, the service processing module 14, and the external communication interface 15 constitute a service channel of the interface card;

The control interface 112 is connected to the control module 12 to form an external control channel of the interface card. The control module 12 is connected to the local CPU module 13 to form a local control channel of the interface card. The control module 12 is also connected to the state interface 111 and the service processing module 14, respectively. .

After the interface card is inserted into the aggregation device or the access device, the interface card backplane module 11 is connected to the aggregation device line card motherboard or the access device backplane. At this time, the interface card backplane module 11 is connected to the convergence device line card. The board or the access device backplane obtains the rack type indication signal. For example, when the interface card backplane module 11 is connected to the sink device line card motherboard, the state interface 111 obtains the rack type indication signal of 0, and the interface card backplane When the module 11 is connected to the access device backplane, the status interface 111 obtains a rack type indication signal of 1.

Then, the control module 12 determines whether the interface card backplane module 11 is currently connected to the aggregation device line card motherboard or the access device backplane based on the rack type indication signal; if it is determined that the interface card backplane module 11 is currently connected to the convergence device line Card connection, then, control module 12 will interface card business The control channel of the channel is switched to the external control channel, so that the aggregation device line card motherboard can access the service processing module 14 through the external control channel and initialize the configuration. At this time, the local control channel is not enabled; if it is determined The interface card backplane module 11 is currently connected to the access device backplane. Then, the control module 12 switches the control channel of the service channel of the interface card to the local control channel, so that the local CPU module 13 can process the service through the local control channel. Module 14 performs an initial configuration, at which point the external control channel is not enabled.

Finally, after the business processing module 14 is initialized, the interface card begins to work.

It should be noted that, referring to FIG. 1 , the interface card further includes a clock module 16 and a power module 17 . The interface card backplane module 11 further includes a clock interface 114 and a power interface 115. The clock module 16 is connected to the clock interface 114 to synchronize. Time; the power module 17 is connected to the power interface 115 to implement power supply.

2 is a schematic diagram of a connection relationship between a line card motherboard and an interface card of an aggregation device according to an embodiment of the present invention. Referring to FIG. 2, a service channel of the interface card 1 is connected to the motherboard 2 through an interface card backplane module; The motherboard sub-card interface module 21 receives the service packet sent by the service interface of the interface card, and performs the cache processing by the motherboard service module 22, and provides a service forwarding channel, so that the service packet is normally sent to the motherboard rack backplane. The interface module 23; in the downlink direction, the motherboard rack backplane interface module 23 receives and processes the service packet from the aggregation device switching unit, and then sends the packet to the motherboard subcard interface module 21 through the service forwarding channel, and sends it to the motherboard Corresponding interface card;

The external control channel of the interface card 1 is connected to the motherboard 2 through the interface card backplane module, and the motherboard CPU module 24 is connected to the central control unit of the convergence device through the motherboard rack backplane interface module 23, and also controls the switch module 25 and the mother. The external control channel of the motherboard formed by the board interface module 21 is connected to the external control channel of the interface card 1 to configure and monitor the service processing module of the interface card 1 through the external control channel.

FIG. 3 is a schematic diagram of a connection relationship between an access device backplane and an interface card according to an embodiment of the present invention. Referring to FIG. 3, the service channel of the interface card 1 is connected to the access device rack backplane 2 through the interface card backplane module. The service processing module receives the service message from the external communication interface module for caching and The corresponding packet is processed, and then sent to the access device rack backplane 2 by the interface card backplane module through the service channel, and forwarded by the access device rack backplane 2 to the access device switching unit 31, and the access device exchanges After receiving the service packet, the unit 31 forwards the packet to the outbound interface card according to the content of the packet, and the service processing module of the outbound interface card performs corresponding processing to find the egress port corresponding to the packet, and the packet is correspondingly received. The port is sent out;

The local CPU module of the interface card 1 is connected to the access device central control unit 32 through an out-of-band communication channel. The interface card 1 first loads the driver software of the interface card through the channel, and the local CPU module runs the program and processes the service module. Perform configuration management. The central control unit 32 of the access device performs protocol packet transmission and reception with the local CPU module of the interface card 1 through the outband communication channel, and obtains an operation status message of the interface card 1.

In an actual application, as shown in FIG. 1 , the control module 12 controls the local CPU module 13 to reset and controls the service processing module 14 to reset, thereby switching the control channel of the service channel of the interface card to an external control channel; 12, by controlling the local CPU module 13 and the service processing module 14 to reset, to switch the control channel of the service channel to the local control channel.

In another embodiment, FIG. 4 is a schematic diagram of a connection manner between a control interface and a control module according to an embodiment of the present invention. Referring to FIG. 4, the interface card further includes: a bridge module 18, and a control interface 112, respectively. The control module 12 is connected to form an external control channel of the interface card.

Correspondingly, the control module 12 can switch the control channel of the service channel to the external control channel by controlling the local CPU module 13 to reset and control the bridge module 18 and the service processing module 14 to be reset. The control module 12 controls the local CPU module 13 And the service processing module 14 is reset, and the bridge module 18 is controlled to reset, so as to switch the control channel of the service channel to the external control channel.

Still referring to FIG. 1, the interface card backplane template 11 further includes an out-of-band communication interface 116 coupled to the local CPU module 13 to form an out-of-band communication channel of the interface card. If the interface card backplane module 11 is currently connected to the access device backplane, the local CPU module 13 and the access device central control unit are connected through an outband communication channel, and the interface card first loads the interface card through the channel. The program is run by the local CPU module 13 to initialize the business processing module 14.

In an actual application, the central control unit of the access device can also perform protocol packet sending and receiving with the local CPU module 13 through the outband communication channel, and obtain the function of the interface card running status.

The workflow of the above interface card will be described below.

FIG. 5 is a schematic diagram of a working process of an interface card according to an embodiment of the present invention. Referring to FIG. 5, the process includes:

S501: After the interface card is inserted into the access device rack or the aggregation device motherboard, the control module reads the rack backplane type indication signal sent by the status interface.

S502: The control module determines whether the interface card is inserted into the aggregation device motherboard according to the frame backplane type indication signal; if yes, execute S503; if not, determine that the interface card is inserted into the access device rack, and execute S506;

S503: The control module resets the local CPU module according to the frame backplane type indication signal, and resets the bridge module and the service processing module.

S504: The control module switches the control channel of the service processing module to the external control channel.

S505: The motherboard CPU module accesses the service processing module through an external control channel, and initializes the configuration. After the configuration is complete, the service packets in the interface card can be sent and received normally, and the process ends.

S506: The control module resets the bridge module, and resets the local CPU module and the service processing module.

S507: The control module switches the control channel of the service processing module to the local control channel.

S508: the local CPU module is started, and the driver of the interface card is obtained from the central control unit of the access device through an out-band communication channel and runs;

S509: The local CPU module accesses the service processing module through the local control channel, and initializes the configuration. After the configuration is complete, the service packets in the interface card can be sent and received normally, and the process ends.

In practical applications, the structure of the corresponding control module will be different due to different control interfaces. For example, FIG. 6 is an interface card in the embodiment of the present invention, and the control interface is a new generation peripheral unit. FIG. 6 is a schematic diagram of a structure of a PCI-E (Peripheral Component Interconnection-Express) interface. When the control interface 112 is a PCI-E interface, the control module 12 further includes: An interface conversion module 121, a second interface conversion module 122, a local control bus (LBS, local control bus) switching module 123 and a reset circuit module 124;

The control interface 112 is connected to the bridge module 18 to form a PCI-E channel; the bridge module 18 is connected to the first interface conversion module 121 to form a PCI channel; the first interface conversion module 121 is connected to the LBS switching module 123 to form an LBS channel 1 The LBS switching module 123 is connected to the second interface conversion module 122 to form the LBS channel 2; the LBS switching module 123 is connected to the service processing module 14 to form the LBS channel 3; the LBS switching module 123 is also connected to the status interface 111; The module 122 is connected to the local CPU module 13 to form an IFC (Integral Flash Controller interface integrated with the CPU), and the reset circuit module 124 and the bridge module 18, the first interface conversion module 121, and the second interface conversion module 122, respectively. The LBS switching module 123, the local CPU module 13, and the status interface 111 are connected.

7 is a schematic diagram of the working process of the interface card in the embodiment of the present invention when the control interface is a PCI-E interface. Referring to FIG. 7, the process includes:

S701: After the interface card is inserted into the access device rack/aggregation device motherboard, the control module reads the rack backplane type indication signal;

S702: The control module determines whether the interface card is inserted into the aggregation device motherboard according to the frame backplane type indication signal; if yes, execute S703; if not, determine that the interface card is inserted into the access device backplane, and execute S708;

S703: the reset circuit module resets the local CPU module and the second interface conversion module according to the frame backplane type indication signal, and resets the bridge module, the first interface conversion module, and the LBS switching module;

S704: The bridge module converts the PCI-E interface into a PCI interface.

S705: The first interface conversion module converts the PCI interface into an LBS interface to form an LBS channel. 1;

S706: The LBS switching module connects the LBS channel 1 and the LBS channel 3;

At this time, the external control channels of the interface cards formed by the PCI-E channel, the PCI channel, the LBS channel 1 and the LBS channel 3 are connected.

S707: The motherboard CPU module accesses the service processing module through an external control channel, and initializes the configuration. After the configuration is complete, the service packets in the interface card can be sent and received normally, and the process ends.

S708: the reset circuit module resets the bridge module and the first interface conversion module according to the backplane type indication signal, and resets the local CPU module, the second interface conversion module, and the LBS switching module;

S709: The second interface conversion module converts the IFC interface of the local CPU module into an LBS interface.

At this time, the LBS channel 2 is in communication with the local control channel formed by the LBS channel 3.

S710: The local CPU module is started, and the driver of the interface card is obtained from the central control unit of the access device through an out-band communication channel and runs;

S711: The local CPU module accesses the service processing module through the local control channel, and initializes the configuration. After the configuration is complete, the service packets in the interface card can be sent and received normally, and the process ends.

It can be seen from the above that the control module of the interface card can determine which device is currently connected according to the rack type indication signal sent by the status interface, and then select the corresponding control channel for initial configuration, thus implementing the interface card for the core aggregation device and Access device compatibility.

Based on the same inventive concept, an embodiment of the present invention provides a control method, which is applied to an interface card, which is consistent with the interface card described in one or more of the foregoing embodiments.

FIG. 8 is a schematic flowchart of a control method in an embodiment of the present invention. Referring to FIG. 8, the method includes:

S801: The control module obtains a rack type indication signal by the status interface.

S802: The control module determines, according to the frame type indication signal, that the interface card backplane module is currently connected to the aggregation device line card motherboard, and then switches the control channel of the service channel to an external control channel, so that the convergence device line card motherboard can pass the external The control channel initializes the service processing module Set

The S802 can include: the control module controls the local CPU module reset, and controls the service processing module to reset to switch the control channel of the service channel to the external control channel.

In another embodiment, the interface card further includes a bridge module, is disposed in the external control channel, and is respectively connected to the control interface and the control module;

Correspondingly, the S802 can include: the control module controls the local CPU module reset, and controls the bridge module and the service processing module to reset to switch the control channel of the service channel to the external control channel.

S803: The control module determines, according to the frame type indication signal, that the interface card backplane module is currently connected to the access device backplane, and then switches the control channel of the service channel to the local control channel, so that the local CPU module processes the service through the local control channel. The module is initialized.

S803 can include: the control module controls the local CPU module and the service processing module to reset to switch the control channel of the service channel to the local control channel.

At this time, S803 may include: the control module controls the local CPU module and the service processing module to reset, and controls the bridge module reset to switch the control channel of the service channel to the external control channel.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each of the processes and/or blocks in the flowcharts and/or block diagrams, and in the flowcharts and/or block diagrams, can be implemented by computer program instructions. / or a combination of boxes. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

An interface card includes: an interface card backplane template, a control module, a local central processing unit CPU module, a service processing module, and an external communication interface; the interface card backplane module is used to connect with a convergence device line card motherboard or The interface card is connected to the device; the interface card backplane module includes: a status interface, a control interface, and a service interface; the service interface is connected to the service processing module, and the service processing module is connected to the external communication interface, and the configuration a service channel of the interface card; the control interface is connected to the control module to form an external control channel of the interface card; the control module is connected to the local CPU module to form a local control channel of the interface card; The control module is further connected to the state interface and the service processing module respectively;

The control module obtains a rack type indication signal by the status interface, and determines, according to the rack type indication signal, that the interface card backplane module is currently connected to the convergence device line card motherboard, The control channel of the service channel is switched to the external control channel, so that the aggregation device line card motherboard can initialize the service processing module through the external control channel; based on the frame type indication signal, When the interface card backplane module is currently connected to the access device backplane, the control channel of the service channel is switched to the local control channel, so that the local CPU module passes the local control channel pair. The service processing module performs initial configuration.
The interface card of claim 1, wherein the interface card backplane template further comprises: an outband communication interface coupled to the local CPU module to form an outband communication channel of the interface card.
The interface card according to claim 1, wherein the interface card further comprises: a bridge module respectively connected to the control interface and the control module to form the external control channel.
The interface card according to claim 3, wherein when said control interface is a new generation When the peripheral component is interconnected with the standard PCI-E interface, the control module includes: a first interface conversion module, a second interface conversion module, a local control bus LBS switching module, and a reset circuit module;

The bridge module is connected to the first interface conversion module; the first interface conversion module is connected to the LBS switch module; the LBS switch module is respectively connected to the second interface conversion module and the state interface And the service processing module is connected; the second interface conversion module is connected to the local CPU module; the reset circuit module is respectively connected to the bridge module, the first interface conversion module, and the second interface conversion module The LBS switching module, the local CPU module, and the state interface are connected.
A control method is applied to an interface card, the interface card includes an interface card backplane template, a control module, a local central processing unit CPU module, and a service processing module; the interface card backplane module includes: a status interface, a control interface a service interface; the control module is connected to the control interface to form an external control channel of the interface card; the control module is connected to the local CPU module to form a local control channel of the interface card; The processing module is connected to the service interface to form a service channel of the interface card; the method includes:

The control module obtains a rack type indication signal by the state interface;

After the control module determines that the interface card backplane module is currently connected to the convergence device line card motherboard, the control module switches the control channel of the service channel to the external control channel, Enabling the aggregation device line card motherboard to initialize the service processing module through the external control channel;

After the control module determines that the interface card backplane module is currently connected to the access device backplane, the control module switches the control channel of the service channel to the local control channel, so that The local CPU module performs initial configuration on the service processing module by using the local control channel.
The method according to claim 5, wherein the control module switches the control channel of the service channel to the external control channel, including:

The control module controls the local CPU module to reset and controls the service processing module The block is reset to switch the control channel of the traffic channel to the external control channel.
The method of claim 5, wherein the interface card further comprises a bridge module disposed in the external control channel and connected to the control interface and the control module respectively;

The control module switches the control channel of the service channel to the external control channel, including:

The control module controls the local CPU module to reset, and controls the bridge module and the service processing module to reset to switch the control channel of the service channel to the external control channel.
The method according to claim 5, wherein the control module switches the control channel of the service channel to the local control channel, including:

The control module controls the local CPU module and the service processing module to reset to switch the control channel of the service channel to the local control channel.
The method of claim 5, wherein the interface card further comprises a bridge module disposed in the external control channel and connected to the control interface and the control module respectively;

The control module switches the control channel of the service channel to the local control channel, including:

The control module controls the local CPU module and the service processing module to reset, and controls the bridge module to reset to switch the control channel of the service channel to the external control channel.