WO2007016810A1

WO2007016810A1 - An in-band management method of the asymmetrical digital subscriber line (adsl) terminal unit

Info

Publication number: WO2007016810A1
Application number: PCT/CN2005/001207
Authority: WO
Inventors: Boshan Zhang; Wanbo Jiang; Weidong Li
Original assignee: Zte Corporation
Priority date: 2005-08-08
Filing date: 2005-08-08
Publication date: 2007-02-15
Also published as: CN101204041B; CN101204041A

Abstract

An in-band management method of the asymmetrical digital subscriber line (ADSL) terminal unit includes: converting the private management message of the terminal unit to the normative standard interface message by bearing the middleware over the internal communication protocol of the terminal unit, thereby providing the uniform standard interface for the upper application. The present invention resolves the problem that managing the different terminal unit needs realize the different managing interface in the main control side and realizes using the uniform interface to manage the various terminal unit of different format .

Description

In-band management method for asymmetric digital subscriber line central office subscriber unit

The present invention relates to the field of data communications, and in particular, to a solution for managing an asymmetric digital subscriber line central office subscriber unit in an in-band manner in a digital subscriber line access multiplexer system. Background technique

With the popularization of DSL (Digital Subscriber Line) technology, more and more manufacturers design and manufacture ATUC (ATUC: ADSL Terminal Unit at the service provider site; ADSL central office subscriber unit), for the management of these ATUC Each manufacturer provides both out-of-band and in-band management.

At present, the more commonly used management mode is the out-of-band management mode, that is, DSLAM (Digital Subscriber Line Access Multiplexer) manufacturers add a microprocessor to ATUC to connect to the host interface of ATUC for management. Since the management interfaces provided by various ATUC manufacturers are different, DSLAM manufacturers must design different management interfaces for different sets of chips, which greatly reduces the reusability of the design and increases the research and development costs of DSLAM manufacturers.

The in-band mode manages the ATUC, which is managed through the service channel of the ATUC. Since the current ATUC service channel is implemented through the unified UTOPIA (ATM Level 3 global test and operation physical interface) interface, the interface design of the DSLAM manufacturer can be greatly simplified. . At present, ATUC vendors provide in-band management functions, but their internal communication protocols are different. For DSLAM manufacturers, if they are not unified, different software designs need to be implemented for different ATUCs.

Therefore, it is necessary to provide an in-band management solution for unifying ATUC, including a hardware interface and a software interface, so that the DSLAM manufacturer's main control system can implement in-band management of different ATUCs through a unified interface. Invention disclosure

The technical problem to be solved by the present invention is to provide an in-band management method for an asymmetric digital subscriber line central office subscriber unit, which solves the problem that different ATUCs need to implement different management interfaces on the main control side, and cannot manage multiple interfaces with the same interface. Technical issues with heterogeneous ATUC.

To achieve the above object, the present invention provides an asymmetric digital subscriber line office subscriber unit. The in-band management method is characterized in that the private management message of the central office subscriber unit is converted into a standard interface message by means of carrying the middleware on the internal communication protocol of the central office subscriber unit, thereby The upper application provides a uniform standard interface.

The above method is characterized in that the main control system calls the corresponding management information database data value through the standard interface to complete management of the central office subscriber unit.

The above method is characterized in that: the main control system and the central office unit are connected through an ATM physical layer, and the main control system side includes: a main control system sequentially disposed on the ATM physical layer The PVC layer, the main control system ATM adaptation layer, the main control system DCP protocol layer, the middleware, and the SNMP protocol layer; the central office subscriber unit side includes: a subscriber unit PVC layer sequentially disposed on the ATM physical layer, a subscriber unit ATM adaptation layer, a subscriber unit DCP protocol layer, and a private management message layer; the master control system operates at the SNMP protocol layer, and converts the standard management information base operation of the upper layer application into The private management message of the central office subscriber unit is sequentially forwarded to the subscriber unit DCP protocol layer by the main control system DCP protocol layer.

The above method is characterized in that the user layer PVC layer is automatically created after the central office subscriber unit is started, and the PVC layer of the main control system is dynamically and flexibly created.

The above method is characterized in that: the ATM control layer of the main control system adopts an AAL0 or AAL5 encapsulation mode, and the main control is established after the management channel between the main control system and the central office subscriber unit is established. The system can modify the encapsulation mode of the subscriber unit ATM adaptation layer.

The above method is characterized in that the association between the main control system and the central office subscriber unit through the ATM physical layer includes a topology discovery step: the central office subscriber unit reports its own related information during system initialization. After confirming the related information, the main control system establishes an interconnection relationship with the central office subscriber unit.

The above method is characterized in that: the related information includes: a vendor ID, a product serial number, and a version number.

The foregoing method is characterized in that it further includes a configuration management step for implementing normal management of the central office subscriber unit, including: starting initial configuration, ADSL port parameter configuration, line parameter configuration, alarm parameter configuration, and loopback. Test, central office subscriber unit reset, and PVC parameter configuration.

The foregoing method is characterized in that it further includes a performance parameter reading step, where the parameters include: physical port information of the central office subscriber unit, ATU-R physical port information, central office subscriber unit port channel information, and ATU-R port channel. Information, physical layer performance statistics of the central office subscriber unit port, ATU-R end Port physical layer performance statistics, central office user unit port history time slice physical layer performance statistics,

ATU-R port historical time slice physical layer performance statistics, central office subscriber unit port channel layer performance statistics, ATU-R port channel layer performance statistics, central office subscriber unit port historical time slice channel layer performance statistics and ATU- R port historical time slice channel layer performance statistics.

The above method is characterized in that it further includes a firmware loading step: after identifying a specific central office subscriber unit type by topology discovery, the main control system provides the middleware with a specific firmware file of the central office subscriber unit The pointer and the length, and then complete the loading process through the internal communication protocol, thereby implementing the version loading and version upgrading functions initiated by the central office subscriber unit.

The advantages of the invention are:

1. Resolve different management at present. ATUC needs to implement different management interfaces on the main control side to implement multiple heterogeneous ATUC functions with the same interface.

2. The main control side can reuse the design of ATUC management to effectively protect R&D investment;

3. ATUC no longer needs a relatively expensive management microprocessor, which can effectively reduce the cost of DSLAM and further stimulate the development of the DSL market;

4. It can effectively reduce the power consumption of ATUC. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a reference model of an ATUC in-band management protocol implemented by the present invention;

2 is a basic configuration model of ATUC in-band management adopted by the present invention;

3 is a functional schematic diagram of a core module middleware of the present invention;

Figure 4 is a schematic diagram of the method of the present invention. The best way to implement the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

The present invention provides a solution for implementing in-band management of ATUC. The method is applicable to management of ATUC based on ATM (Asynchronous Transfer Mode), and can also be applied to management of SHDSL (Symmetrical High bite Digital SubscriberLine).

The present invention requires an ATUC chipset manufacturer to provide an in-band management internal communication protocol and to reside in the host control system. The core of the invention is to carry the middleware by means of the internal communication protocol of the ATUC. The way to convert ATUC's private management messages to the standard specification interface provides a unified interface to the upper-layer applications through the MIB (Management Information Base).

When the main control system needs to manage the ATUC, the corresponding operation can be completed by calling the corresponding MIB amount with the standard interface. It is not necessary to communicate with the ATUC management CPU as the out-of-band management mode.

The protocol reference model for in-band mode management ATUC is shown in Figure 1. Figure 2 is a basic configuration model using in-band management ATUC, Figure 3 is a schematic diagram of middleware conversion ATUC private management messages, and Figure 4 is a schematic diagram of the method of the present invention.

The specific technical solutions of the present invention are described as follows:

1. The physical medium between the ATUC and the main control system is ATM, which carries the PVC for in-band management (VPI/VCI=0/19). The PVC (permanent virtual circuit) is automatically created after the ATUC is started. The main control side can be dynamically and flexibly created as needed;

2. For the ATM adaptation layer, the AAL0 encapsulation mode is adopted by default, which can be configured as AAL5. The main control side can modify the ATM adaptation encapsulation mode of the ATUC after the management channel is established.

3. The ATUC interacts with the main control system through the DCP protocol (Device Control Protocol). The ATUC needs to support the DCP protocol. The DCP is used to carry specific configurations, commands, and statistics.

4. Middleware is the key to this implementation. Middleware is used to implement the conversion of private management messages of ATUC and standard MIB operations. Through the middleware, the standard MIB operation of the upper application is converted into various ATUC private management messages and sent to the ATUC through the DCP, and the private management messages sent by the ATUC to the main control system are converted into standard MIB operations and returned to the upper application;

5. The external management protocol uses the standard SNMP protocol, which is carried on the middleware and can be implemented.

Remote management of ATUC.

The ATUC in-band management method implemented in the above manner includes the following key stages:

1. Topology discovery phase: ATUC reports its own vendor ID, product serial number, version number and other information during system initialization. After the main control system confirms, it establishes a mutual connection relationship. Topology discovery is the basis for implementing ATUC in-band management;

2. Configuration management phase: It includes startup initialization configuration, ADSL port parameter configuration, line parameter configuration, alarm parameter configuration, loopback test, ATUC reset, and PVC parameter configuration. The configuration management phase implements the normal management functions of ATUC;

3. Performance parameter reading phase: including ATUC physical port information, ATU-R physical port information, ATUC port channel information, ATU-R port channel information, ATUC port physical layer performance statistics, ATU-R port physical layer performance statistics, ATUC port historical time slice physical layer performance statistics, ATU-R port historical time slice physical layer performance statistics, ATUC port channel layer performance statistics, ATU-R port channel layer performance statistics Information, ATUC port historical time slice channel layer performance statistics and ATU-R port historical time slice channel layer performance statistics. This phase includes the ATUC active event reporting function;

4. FIRMWARE loading phase: After identifying the specific ATUC type through topology discovery, the main control system provides the ATUC-specific FIRMWARE file pointer and length to the middleware, and then completes the loading process through the internal communication protocol. This phase is used to implement ATUC-initiated version loading and version upgrade functions.

The in-band ATUC management method implemented by the present invention has the same function as a microprocessor that manages ATUC through out-of-band.

Further details are described below:

The model of Figure 1 represents the protocol reference model for intra-ATUC management, indicating the functions that ATUC implements through the various protocol stacks required for in-band management. Among them, SNMP is the upper management protocol, and DCP is the internal communication protocol. The middleware completes the conversion function of the management message.

ATM physical layer selection requirements:

1. ATM Forum UTOPIA 2 interface specification requirements, UTOPIA 3 interface specification requirements;

' 2. UTOPIA port hardware in-band management is configurable, the default is the 31st UTOPIA port;

3. The management PVC software can be configured. The default PVC has a VPI/VCI value of 0/19.

4. Allow new PVCs to be created for Firmware loading, or 0/19.

ATM adaptation layer selection requirements:

1. Support AAL0 format, DCP protocol adopts AAL0 format by default;

2. Support ML5 format, follow YDN 053. 4 B- ISDN ATM Adaptation Layer (ML) Type 5 standard.

The ATUC in-band management process is described as follows:

1. After ATUC is started, PVC 0/19 for in-band management is automatically created, and ML0 is selected as its

ATM adaptation layer encapsulation mode;

2. The DCP protocol in the ATUC starts, and enters the topology discovery phase;

3. The main control system simultaneously creates the in-band management PVC 0/19 of the corresponding ATUC, and selects ML0 as its ATM adaptation layer encapsulation mode;

4. The main control system starts the DCP, enters the topology discovery phase, and receives the topology discovery packet sent by the ATUC. And verify the vendor ID, product serial number and version sent by the device, and then return the ATUC discovery confirmation message;

5. Through the confirmation mechanism, ATUC establishes a connection with the main control system, and can perform in-band management operations;

6. If the management entity needs to perform some configuration on the ATUC at this time, it first sends the configuration information to the middleware through the SNMP SET command to invoke the canonical MIB interface, and the middleware is converted into

ATUC dedicated configuration operation, using DCP to write to the corresponding register or memory of ATUC, complete the configuration process;

7. For the read operation of the main control system, the MIB interface of the specification is also called by the SNMP GET command to send the required information to the middleware, and the middleware is converted into the ATUC private read operation command by the processing, and is sent to the ATUC by using the DCP protocol. ATUC parses the DCP protocol to perform the corresponding read operation, encapsulates the result in the DCP protocol and returns the middleware to the main control system, and the middleware converts the ATUC private message into the canonical MIB interface and returns it to the upper application system;

8. If the state of the ATUC changes, the event information is encapsulated into the DCP protocol and transmitted to the main control system through the in-band management channel, and the middleware is parsed into the standard event number and sent to the upper application system;

9. For the reset operation, the reset operation of the specification is also converted to ATUC's own reset command by the middleware to realize the reset operation of the ATUC;

10. When you need to upgrade the firmware of the set, the upper application passes the pointer and length of the file to the middleware through the specification interface S P SET command, and the middleware is converted into ATUC's own structure to realize the firmware upgrade of the set. Features;

ATUC vendors need to implement the DCP protocol stack and related configuration inside ATUC. The protocol stack of DCP in the main control part is common, and the external interface of the middleware part is the standard MIB interface. The internal conversion module of the middleware needs corresponding support from ATUC vendors. package.

Managing ATUC using the method of the present invention will bring great benefits:

1 Solving the current management differences ATUC needs to implement different management interfaces on the main control side to implement multiple heterogeneous ATUC functions with the same interface;

2 The main control side can reuse the design of ATUC management to effectively protect R&D investment;

3ATUC no longer needs a relatively expensive management microprocessor, which can effectively reduce the cost of DSLAM and further promote the development of the DSL market;

4 can effectively reduce the power consumption of ATUC. Of course, the present invention may be embodied in various other various modifications and changes without departing from the spirit and scope of the invention. Changes and modifications are intended to be included within the scope of the appended claims. Industrial applicability

The method of the present invention converts the private management message of the central office subscriber unit into a standard interface message by means of carrying the middleware on the internal communication protocol of the central office subscriber unit, thereby providing unified application to the upper layer application. Standard interface. The method of the present invention solves the problem that the current management of different ATUCs needs to implement different management interfaces on the main control side, and realizes managing multiple heterogeneous ATUC functions by using the same interface; the design of the ATUC management of the main control side of the present invention can be reused and effective. Protecting R&D investment, and eliminating the need for relatively expensive management microprocessors on ATUC, can effectively reduce the cost of DSLAMs, further drive the development of the DSL market, and effectively reduce the power consumption of ATUC. The present invention is applicable to the management of ATM-based ATUC and can also be applied to the management of SHDSL, and the method of the present invention is equally applicable to other fields in which similar problems exist.

Claims

Claim

An in-band management method for an asymmetric digital subscriber line central office subscriber unit, characterized in that the central office subscriber unit is converted by carrying a middleware on an internal communication protocol of the central office subscriber unit The private management message is a standardized standard interface message, thus providing a unified standard interface for upper layer applications.

2. The method according to claim 1, wherein the main control system calls the corresponding management information base data value through the standard interface to complete management of the central office subscriber unit.

The method according to claim 2, wherein the main control system and the central office unit are connected by an ATM physical layer, and the main control system side comprises: sequentially disposed at the ATM The main control system PVC layer on the physical layer, the main control system ATM adaptation layer, the main control system DCP protocol layer, the middleware, and the SNMP protocol layer; the central office subscriber unit side includes: sequentially disposed in the ATM physical layer User unit PVC layer, subscriber unit ATM adaptation layer, subscriber unit DCP protocol layer, private management message layer; the master control system operates at the SNMP protocol layer, and applies the upper layer through the middleware The standard management information base operation is converted into a private management message of the central office subscriber unit and sequentially forwarded to the subscriber unit DCP protocol layer by the main control system DCP protocol layer.

The method according to claim 3, wherein the user layer PVC layer is automatically created after the central office unit is activated, and the PVC layer of the main control system is dynamically and flexibly created. .

The method according to claim 3, wherein the master control system ATM adaptation layer adopts an ML0 or ML5 encapsulation mode, and management between the main control system and the central office subscriber unit After the channel is established, the main control system can modify the encapsulation mode of the subscriber unit ATM adaptation layer.

The method according to claim 3, wherein the contacting between the main control system and the central office subscriber unit through the ATM physical layer includes a topology discovery step: the central office subscriber unit is in the system initialization process The related information is reported in the middle, and the main control system establishes an interconnection relationship with the central office subscriber unit after confirming the related information.

7. The method according to claim 6, wherein the related information comprises: a manufacturer

ID, product serial number, and version number.

The method according to claim 6, further comprising a configuration management step for implementing normal management of the central office subscriber unit, including: starting initial configuration, ADSL port parameter configuration, and line parameter configuration. , alarm parameter configuration, loopback test, central office subscriber unit reset, and PVC parameter configuration.

The method according to claim 6, further comprising a performance parameter reading step, where the parameters include: physical data of the central office unit, ATU-R physical port information, and a central office unit port channel. Information, ATU-R port channel information, physical layer performance statistics of the central office subscriber unit port, ATU-R port physical layer performance statistics, central office subscriber unit port history time slice physical layer performance statistics, ATU-R port history time Physical layer performance statistics, central office unit port channel layer performance statistics, ATU-R port channel layer performance statistics, central office subscriber unit port history time slice channel layer performance statistics, and ATU-R port history time slice channel Layer performance statistics.

10. The method according to claim 6, further comprising a firmware loading step: after identifying a specific central office subscriber unit type by topology discovery, the master control system provides the central office to the middleware The pointer and length of the specific firmware file of the subscriber unit are then completed by the internal communication protocol, thereby implementing the version loading and version upgrading functions initiated by the central office subscriber unit.