KR100295747B1 - Protocol message analysis method in V5.2 interface of switching system - Google Patents

Abstract

V5.2 protocol layer 3 protocol messages applied to the V5.2 interface can be analyzed by the operator of the switching system without a separate protocol analyzer, and the V5.2 interface protocol messages from the operator terminals connected to the switching system. When a signal requesting analysis is detected in the CTPM block in the OMP processor of the switching system, a process of generating a child processor that will be responsible for protocol message analysis function, and the generated processor is performed according to a command required from an operator terminal. Requesting the number of protocol messages collected by the operator to the CTPS block in the SSP processor in which the SSP processor exists, and generating the child processor according to the request of the protocol message, and then performing the protocol message collection function according to the required instructions. SSDI block or VPC to run The process of requesting the collection of protocol messages by selecting the lock, and the process of monitoring the V5.2 interface from the time point according to the request of protocol message collection, collecting the protocol messages, and reporting them as raw data to the CTPS block, the upper processor. And, the CTPS block collects the number of raw data collected by the operator initially and then reports it to the CTPM block, which is the upper processor, and the CTPM block that receives the raw data analyzes the received raw data to be understood by the operator. It includes the process of outputting to the operator terminal side in an easy state.

Description

Protocol message analysis method in V5.2 interface of switching system

The present invention analyzes the protocol message of the network layer, which is layer 3, among the V5.2 protocols (ITU-T G.964 / G.965, ETS300 324-1 / 347-1) applied to the V5.2 interface of the switching system. The present invention relates to a method of V5. 5 of a switching system that allows an operator of a switching system managing a V5.2 interface to analyze protocol messages of a network layer that is layer 3 of the V5.2 protocol without a separate protocol analyzer. 2 relates to a protocol message analysis method in the interface.

In general, the V5.2 protocols recommended by the International Telecommunication Union-Telecommunication standardization section (ITU-T) and the European Telecommunications Standardization Institute (ETSI), the European Telecommunication Union standards, It is a protocol that is applied to connect the interface of), and the V5.2 interface supports various types of subscribers such as analog telephone connection, Integrated Services Digital Network (ISDN) connection, and leased line connection.

The protocol of the V5.2 interface is divided into three layers. Each layer uses primitives to exchange information and communicates with the same layer in different access networks.

As described above, in executing the V5.2 interface protocol between the switching system and the access network, the operator of the switching system needs to analyze the message of the layer 3, which is the network layer, to manage the V5.2 protocol. .2 It lacks the ability to manage and monitor the protocol.

Thus, as can be seen in the attached FIG. 1, when the operator needs to analyze the V5.2 protocol message transmitted and received between the access network 1 and the switching system 2, the access network 1 and the switching system 2 A protocol analyzer (3), which is a separate external device, is connected at any point on the V5.2 interface that connects to the V5.2 interface, and then outputted from the protocol analyzer (3) when transmitting and receiving protocol messages between the access network (1) and the switching system (2). The V5.2 protocol data was confirmed by analyzing the data.

If the protocol analyzer (3), which is a separate external device, is not prepared, the operator can directly connect a PC or test device that can analyze the protocol to the RS-232C port, which is a serial interface provided in the processor of the exchange system (2). After the connection, the system data of the protocol message of the switching system 2 was downloaded as backup data, and the protocol was directly analyzed while referring to the V5.2 protocol recommendation.

As described above, in order to analyze and manage a V5.2 interface protocol message connecting a conventional access network and a switching system, a specially manufactured protocol analyzer has to be externally installed.

In addition, in the case of protocol analyzer, expensive imported equipment is the mainstream, and the operation procedure of the equipment is also complicated, which makes it difficult to analyze the protocol to be transmitted and received, and it is necessary to attach a separate equipment on the interface. There was a problem that the management of the protocol is not made in real time.

In addition, a method of analyzing a protocol using system data downloaded from a processor in a switching system requires a full understanding of the V5.2 protocol recommendation, and requires a technical understanding of the switching system. There is a problem that can not be used universally unless the engineer developing the exchange system.

The present invention has been made in view of the above-mentioned general problems, and an object thereof is to provide a protocol message analysis of a network layer, which is layer 3, among the V5.2 protocols between an access network and an exchange system. It can be executed through the input of a command using the operator's terminal without a separate protocol analyzer, providing efficiency in the operation of the switching system, and in the event of a failure of the V5.2 interface, it is possible to quickly identify and recover the urgent actions and causes of the failure. It is.

1 is a block diagram of an apparatus for analyzing protocol messages between a conventional switching system and an access network;

2 is a diagram illustrating a protocol message analysis structure between an exchange system and an access network according to an embodiment of the present invention;

3 is a flowchart for performing V5.2 interface protocol message analysis of a switching system in the present invention.

<Explanation of symbols for the main parts of the drawings>

10: access network 20: V5.2 interface

30: switching system 31: OPM processor

32: SSP processor

In order to achieve the above object, the present invention provides a method for analyzing an interface protocol between an access network and a switching system, wherein a signal requesting analysis of a V5.2 interface protocol message is transmitted from an operator terminal connected to the switching system. Generating a child processor to be in charge of protocol message analysis function when detected in a CTPM block in the OMP processor;

Requesting the generated child processor to collect as many protocol messages as required by the operator into CTPS blocks in the SSP processor in which the V5.2 interface exists according to a command requested from the operator terminal;

Generating, by the CTPS block, a child processor according to a request of a protocol message, and then requesting collection of a protocol message by selecting an SSDI block or a VPC block to execute a protocol message collection function according to a required instruction;

In response to the protocol message collection request, when the SSDI block or the VPC block generates an event in the V5.2 interface and generates a protocol message from the corresponding time point, collecting the SSDI block or the VPC block as low data to the CTPS block, which is an upper processor;

Collecting the raw data collected by the operator as many as the number initially set by the CTPS block and then reporting it to the CTPM block which is a higher processor;

The CTPM block receiving the raw data may include analyzing the received raw data and processing the received raw data in a form that is easily understood by the operator and outputting the raw data to the operator terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As can be seen in Figure 2, the switching network 30 to which the access network 10 and the operator terminal 40 is connected is connected via a V5.2 interface 20 for transmitting and receiving protocol messages to form a packet network. The exchange system 30 to which the operator terminal 40 is connected is provided with an Operation Ann Maintenance Processor (OPM) processor 31 and a Switching Subsystem Processor (SSP) processor 32, and within the OPM processor 31. (Call Trace and Path set-up Management) block 31a is provided, and in the SSP processor 32, a Call Trace and Path set-up (CTPS) block 32a and a Switching Subsystem Device Interface (SSDI) block ( 32b) and V5.2 (V5.2 Protocol Control) block 33C.

The CTPM block 31 in the OMP processor 31 may analyze a command input for analyzing a V5.2 interface protocol message from the operator terminal 40 and then analyze a protocol message collected according to a selected function. Create a child processor, select a block in the SSP processor 32 to collect protocol messages, and maintain the currently selected function until the function selected by the operator terminal 40 ends.

In addition, the SSP processor 32 executes a function of analyzing raw data of Layer 3, which is a protocol of a network layer, reported by the SSP processor 32, and outputting the raw data in a message form that can be easily understood by an operator.

In the above, the CTPS block 32a in the SSP processor 32 generates one child processor whenever an analysis request of the V5.2 interface protocol occurs from the CTPM block 31a in the OMP processor 31, By collecting as many as the number required by the operator, the layer 3 raw data reported from the lower blocks of the SSDI block 32b and the VPC block 32c are generated as one inter-process communication (IPC) data and the OMP processor 31 After returning to the CTPM block 31a in FIG. 6, the process returns to a state in which the next message can be received.

The SSDI block 32b and the VPC block 32c belong to a specific V5.2 interface that needs to analyze a protocol message. The SSDI block 32b and the VPC block 32c receive a message report for a corresponding V5.2 interface protocol from a CTPS block 32a, which is a higher processor. When various events related to the protocol message occur later, the layer 3 message is processed in the form of raw data and reported to the upper processor side. The SSDI block 32b includes the ID of the V5.2 interface and the V5. 2 It receives interface link number, V5.2 interface channel number, etc. as parameters and collects protocol messages of all layer 3 of the corresponding V5.2 interface and reports them to higher processor.

In addition, the VPC block 32c directly receives a user port number or converts the user port number into a user port number and collects a protocol message for each user port number and reports it to the upper processor.

The operation of analyzing the V5.2 interface protocol message in the switching system having the above-described function will be described with reference to FIG. 3 as follows.

In the state where messages are transmitted and received between the access network 10 and the switching system 30 through the V5.2 interface protocol, the user of the operator terminal 40 may analyze his / her own operator to analyze the layer 3 messages in the V5.2 interface protocol. When the user inputs a command for requesting protocol message analysis together with the subscriber number, the user port number, the V5.2 interface ID, the V5.2 interface link number, and the V5.2 user channel number using the terminal 40, the switching system 30 The CTPM block 31a in the OMP processor 31 detects a protocol message analysis request from the operator terminal 40 (S101).

Then, the CTPM block 31a inputs after analyzing the detected protocol message analysis request and the selected subscriber number, user port number, V5.2 interface ID, V5.2 interface link number, and V5.2 user channel number. Generate a child processor to execute the protocol message analysis function according to the generated command (S102) and according to the analyzed command and subscriber number, user port number, V5.2 interface ID, V5.2 interface link number, and V5.2 user channel number. After selecting the SSP processor 32 in which the corresponding V5.2 interface protocol exists, the number of protocol messages collected from the operator terminal 40 is requested to the CTPS block 32a located in the SSP processor 32 ( S103).

At this time, the highest processor of the CTPS block 32a in the SSP processor 32 generates a child processor that can execute processing such as message collection and reporting according to the required signal (S104).

The child processor generated in the CTPS block 32a has a function of collecting protocol messages according to the entered subscriber number, user port number, V5.2 interface ID, V5.2 interface link number, and V5.2 user channel number. The SSDI block 32b or the VPC block 32c, which is a protocol processing block to be performed, is selected, and a collection of protocol messages is requested through the selected block (S105).

If the function selected from the operator terminal 40 is the ID of the V5.2 interface, the V5.2 interface link number, and the V5.2 interface channel number, the SSDI block 32b is selected and directly inputted to the user port number. If selected by subscriber number, VPC block 32c is selected.

According to the function selected by the operator terminal 40 as described above, the SSDI block 32b or the VPC block 32c selected by the child processor of the CTPS block 32a is received from the time when the V5.2 interface protocol message collection is requested. Transition to the state waiting for the occurrence of various events on the V5.2 interface, when various events occur on the V5.2 interface that is the target of the protocol message tracking to generate a protocol message of the layer 3, it is collected by the CTPS block (32a) In the form of row data (S106).

At this time, the CTPS block 32a collects the number of received protocol message row data of the layer 3 as initially set by the operator terminal 40 and generates one IPC data to generate the IPC data, which is the upper processor OMP processor 31. It is transmitted to my CTPM block 31a (S107).

The CTPM block 31a analyzes the layer 3 raw data reported from the CTPS block 32a of the SSP processor 32, processes the raw data in a form that is easy for the operator to understand, and then analyzes and analyzes various V5.2 interface related data. The protocol message is output to the operator terminal 40 side (S108).

Accordingly, the user of the operator terminal 40 recognizes the state of the V5.2 interface protocol between the access network 10 and the switching system 30 according to the outputted report data, and then recovers the management and the cause of the failure accordingly. To deal quickly.

In addition, the data on the V5.2 interface protocol analyzed through the above process can be backed up to the PC of the operator terminal and used as basic data for later analysis.

As described above, in the present invention, the operator of the switching system analyzes the V5.2 interface protocol message between the access network and the switching system by using the operator terminal without any protocol analysis equipment, and executes operation and management of the switching system. It provides reliability and speed in the analysis and recovery of the cause, eliminates the expense of equipment purchases and eliminates the learning of equipment use, thereby providing efficiency in managing the exchange system.

Claims (6)

A method of analyzing an interface protocol between an access network and a switching system, wherein a signal for analyzing a V5.2 interface protocol message from an operator terminal connected to the switching system is detected in a CTPM block in an OMP processor of the switching system. Generating a child processor to be in charge of message analysis function; Requesting the generated child processor to collect as many protocol messages as required by an operator into CTPS blocks in an SSP processor having a V5.2 interface according to a command requested from the operator terminal; Generating, by the CTPS block, a child processor according to a request of a protocol message, and then requesting collection of a protocol message by selecting an SSDI block or a VPC block to execute a protocol message collection function according to a required instruction; In response to the protocol message collection request, when the SSDI block or the VPC block generates an event in the V5.2 interface and generates a protocol message from the corresponding time point, collecting the SSDI block or the VPC block as low data to the CTPS block, which is an upper processor; Collecting the raw data collected by the operator as many as the number initially set by the CTPS block and then reporting it to the CTPM block which is a higher processor; The CTPM block receiving the raw data includes analyzing the received raw data and processing the received raw data in a state easily understood by the operator and outputting the processed raw data to the operator terminal. . The method of claim 1, wherein the command selected when a protocol message analysis is requested by the operator terminal comprises a subscriber number, a user port number, a V5.2 interface ID, a V5.2 interface link number, and a V5.2 interface channel number. How to parse protocol messages on the V5.2 interface. The method according to claim 1, wherein when the command selected by the operator terminal for the protocol analysis request is a user port number or a subscriber number, the child processor generated in the CTPS block selects a VPC block to collect a protocol message. How to parse protocol messages on the V5.2 interface. 2. The child processor of claim 1, wherein the child processor generated in the CTPS block is one of a V5.2 interface ID, a V5.2 interface link number, and a V5.2 interface channel number. Selecting a protocol message analysis method characterized in that to collect the protocol message. The V5 as claimed in claim 1, wherein the CTPS block is processed as one IPC data and reported to the upper processor when the number of row data selected by the initial instruction is collected in the SSDI block or the VPC block which is the lower block. 2 Protocol message parsing method at interface. The protocol of claim 1, wherein the data of the V5.2 interface protocol analyzed according to the request by the operator terminal can be stored in the operator terminal and used as basic data for subsequent analysis. How to analyze a message.