KR950001512B1 - Network management system and communication method in the communication process - Google Patents

Abstract

None.

Description

Communication processing network management device and communication method

1 is an overall configuration diagram of an information communication service network to which the present invention is applied.

2 is a protocol hierarchy diagram.

3 is a block diagram of a network management apparatus according to the present invention.

4 is a functional process of the network management and operation software (S / W) and the message queue usage structure according to the present invention.

5 is a message format stored in the message queue.

6a and b are flowcharts of a communication method according to the present invention.

7 is a service primitive format of the network management layer.

* Explanation of symbols for main parts of the drawings

31: MMI section 32: MIB section

33,35: Message queue 34: Network management and operation function

36: M-layer function part 37: X.25 layer function part

The present invention relates to a communication processing network management device and a communication method for efficiently operating and managing various complex network elements (network elements) constituting a communication processing network for providing an information communication service.

In the related art, each company that provides a corresponding device for managing network configuration devices has been provided by setting a unique operation management device and a communication method therefor. Therefore, the structure of the network management device is different for each service device, the communication method is also different from each other, there is a problem that causes various problems and greatly increases the operating cost when the integrated service network is not compatible with each other.

To improve this, the International Telegraph and Telephone Advisory Committee (CCITT) stipulates and recommends the network management structure of Telecommunication Management Network (TMN) and Open System Interconnection (OSI). However, rather than following the above standardization as a matter of interest between companies, each company uses its own communication method and interlocks with other devices through the gateway method, and adheres to its products and methods. It is a trend.

Accordingly, the present invention has been made to solve the above problems, to provide an independent network management device in connection with the construction of domestic information and communication service network, and to provide an independent communication method between the network configuration device and the network management device. Leave.

The present invention comprises a bare machine interface (MMI) means for performing an interface function of an operator for managing or maintaining operations to integrate and manage various various network configuration devices (NEs) in order to achieve the above object; Management information base (MIB) means connected to said machine interface means; First data temporary storage means connected to the bare machine interface means; Network management and operation means connected to the first data temporary storage means and management information base means; Second data temporary storage means connected to the network management and operation means; M-layer functional means connected to said second data temporary storage means; And an X.25 layer functional means connected between the M-layer functional means and the network forming apparatus, and a connection request signal (M_CR) of the M-layer functional means using the same from a counterpart. Establishing a session when a connection confirmation signal M_CC is received; A second step of transmitting a data together with the data transmission signal M_DT indicating that the corresponding packet has been received by the receiving side (M_AK), and repeating the process until the last packet when the transmission data is large and the partial transmission is performed; And a third step of transmitting the truncation request signal M-DR and receiving the confirmation signal M_DC thereof and ending the execution thereof.

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

FIG. 1 is a block diagram schematically showing the overall configuration of an information communication service network to which the present invention is applied. In the drawing, NE1 to NEn (1) is a communication processing device, which is connected to itself through a subscriber access network ( 2) allows a user to access a service from an information providing computer of NEn + 1 to NEm (4), which is another communication processing device connected to the X.25 packet network (3).

Central-Operation Administration Maintenance (C-OAM) 6 and M (Mediation) -OAM1 to M-OAMk (5) are in charge of the maintenance and operation management of the communication processing devices (NE1 to NEm) and information providing computers. Network management computers.

Here, the arbitration network management apparatuses M-OAM1 to M-OAMk (5) are locally responsible for the NEs according to performance and capacity, and the central network management apparatus C-OAM (6) has several arbitration network management apparatuses (M- OAM (5) is a center for integrated management and has a hierarchical management structure.

2 is a protocol hierarchy diagram, in which a network on the X.25 protocol, which is a CCITT network layer, is used to send and receive messages between each NE 7 and an arbitration network management unit and a central network management unit (M / C-OAM) 8. The M-layer protocol, a management layer, was installed to facilitate the mutual exchange of desired information in each application layer. The communication method between the M-layers has been described in detail in the description of FIG.

3 is a block diagram schematically showing the configuration of a network management apparatus of the present invention, in which 31 is a bare machine interface (MMI), 32 is a management information base (MIB), and 33 and 35 are message queues. 34 indicates network management and operation function, 36 indicates M-layer function and 37 indicates X.25 layer function.

The network management device configuration of the present invention is based on a computer structure supported by a UNIX operating system, an X.25 communication function, and a commercial database management system (DBMS), and the M-layer protocol of the communication method according to the present invention. Will be interrogated. And the network management operation function is mounted on the M-layer, the function structure is as shown in the figure (CM), performance management (PM), failure management (FM), billing management (AM), and security Has a management (SM) function structure.

The MMI operator matching function is an interface function of the operator that manages and maintains network management devices (M-OAM, C-OAM) and network configuration devices (NE). The output information is processed graphically to increase the operation efficiency. The input command from the menu is supported by the menu method and the interactive method, and the command is compared with the information in the command database (CMD DB) in the management information database (MIB) and verified. The coded command is attached to the message queue 331. Configuration management (CM), performance management (PM), failure management (FM), billing management (AM), security management (SM) network management and operation function unit 34 is a queue (331) from the MMI (31) Receives a command stored in the) and takes a corresponding action such as transmission and reception with the MIB 32, instructs the network configuration device (NE) 1 through the sender of the M-layer, and sends information send. Reported message information from the network configuration device NE is stored in the message queue through the M-ray receiver, and each of the application functions 341 to 345 receives a message to which its identifier (ID) is attached. Receive and perform administrative actions. At this time, the management action refers to the management information database in the MIB 32 as the standard of action, classifies the received information message into a database, records and manages the information in the MIB, and sends information to the operator to the MMI 31. Will be the output.

4 is a diagram illustrating a network management and operation function unit and a message queue using structure according to the present invention, wherein 31 is a bare machine interface unit, 331, 332, 351 is a message queue, 34 is a network management and operation function unit, and 36 is an M-layer function unit. Respectively.

Multiplexing and communicating a plurality of messages through the message queue (331, 332, 351) between the MMI 31 and the network management and operation function unit 34 or between the M-layer function unit 36 and the network management and operation function unit 34. As shown in the figure, the application function is processed into two processes at the same time, one process serves to read the message queue 331 from the MMI and transmit it to the M-layer function unit 36. One process reads the message queue 351 from the M-layer function 36 and stores the message to be sent to the MMI 31 in the queue 332. In this case, since several application functions use the same queue, each application function, MMI, and M-layer function are assigned their own unique identifier (ID), and the identifier (ID) of the other party to send is sent as a message type (mesg-). type) field and store it in the queue so that the receiver can read it. The message format used is shown in FIG.

5 shows the message format stored in the message queue. The message length field indicates the total length. The message-type is a field for supporting the multiplexing of the message queue. Is a command field that distinguishes the entire system, subsystem, and sub-system.The destination address and the source address are the fields indicating the logical address of sending and receiving, and the error cause field is the field indicating the cause of error when an error occurs during sending and receiving. The data length is a field indicating the actual data length of a variable data area, and the checksum field is a field used for a transmission / reception error detection method.

6 is a flowchart of a communication method according to the present invention, in which (A) is a case of a steady state, and (B) is a flowchart of a communication method in an abnormal state.

FIG. 6 represents the flow of communication method between M-layers of FIG. 2, and is composed of three stages of session establishment, data transmission, and session disconnection. The service primitive of the M-layer protocol used is M-layer. M_layer Connection Request (M_CR), which is a connection request signal, M_Layer Connection Confirm (M_CC), a connection confirmation signal, M_Layer Data Transfer (M_DT), which initiates data transmission, and M_AK (M_Lay and Transfer), an indication of data reception on the receiving M_layer. Aoknowledgement) In the abnormal phase, M_AB (M_Layer Abort), a malfunction indication signal from the sending M-layer to the receiving side, M_Layer Abort Acknowledgement (M_AA), a confirmation signal of M_AB, M_Layer Disconnect Request (M_DR), a disconnect request signal, and a disconnect confirmation signal. M_DC (M Layer Disconnect Confirm) and M_RE (M_Layer Reject) which are reject signals. These primitives are used to distinguish between normal and abnormal cases.

In the normal state (A), when the M_CC packet is sent from the other party to the M_CR packet in the session establishment step 601, the session is established and the process proceeds to the data transmission step 602. The data transmission step has a large amount of transmission data in the M-DT packet. In this case, multiple M_DTs are sent by dividing the data, and the sequence numbers are transmitted according to the divided order. The receiver responds with M_AK if the packet is well received and responds with a sequence number. When the last M_DT packet is transmitted, the last field is set to 1 to be transmitted, indicating that there is no more data to send, and the receiving side reassembles the received data according to the sequence number. After all the data is transmitted, the M_DR packet is sent to the session truncation step 603 to receive the M_DC packet. In case of abnormal communication (B) which is not able to communicate normally due to problems in the network and system, (B), when M_CR comes, M_RE can be rejected and the error can be attached to the cause field to recover the error. In case of an error in data or an error in sequence number, M_AB is sent and M_AA can be recovered to recover the error and retry from the initial state. If the response is not received within the specified response time by receiving the timer when receiving, error processing by timeout can be performed and then the user can return to the initial state and retry.

Figure 7 shows the service primitive format between M-layers, and the short form is used to represent all the necessary services. The length of each service primitive is different depending on the primitive from 4 octets to 66 octets. The length field indicates the total length of each service primitive as 2 octets, and the identifier field indicates the type of various service primitives. Denotes the network address of the transmitting / receiving side in 16 octets, the discriminator field distinguishes N communication processing units (NEs), and the user field is 31 octets in the pure data area. The reason field used in M_RE is a field indicating the reason for transmission / reception in one octave. The sequence number used in M_DT is a field indicating the order when long data is divided into several packets and is used in M_AK. The sequence number is a field for identifying the sequence number field of M_DT. The result field of M_DC indicates whether truncation is performed, and the cause field of M_AB is a field indicating a cause of failure.

The present invention relates to a communication method and configuration of a network management device capable of integrated management of communication network components as described above, as well as a newly developed network configuration apparatus, as well as existing devices that match only the communication method and message format. It can be used as an integrated management device that can manage the communication equipment for any purpose.

Therefore, the present invention can be applied as an independent network management and communication method of a domestic information communication network in a situation in which a unique communication method and management method are applied to each country and company even in the process of internationally performing standardization work for integrated network management. In addition, since multiple network devices can be managed in a group from a long distance, it has an effect of reducing maintenance management costs.

Claims (4)

A communication processing network management apparatus for integrating and managing a variety of various network configuration apparatuses (NE) 1, comprising: a bare machine interface (MMI) means 31 for performing an interface function of an operator who manages or maintains operations; Management information base (MIB) means (32) connected to the machine interface means; First data temporary storage means (33) connected to the bare machine interface means; Network management and operation means (34) for performing the operation by comparing and verifying the command input connected to the first data temporary storage means and the management information database means with the command database (CMD DB) information in the management information base means (34). ); Second data temporary storage means 35 connected to the network management and operation means; M-layer functional means 36 connected to said second data temporary storage means; And an X.25 layer functional means (37) connected between the M-layer functional means and the network forming apparatus (1). The network management and operation means (34) of claim 1, further comprising: a first process for sending data input from the bare machine interface means (31) to the M-layer functional means (36); And a second process for transmitting the data input from the M-layer functional means (36) to the bare machine interface means (31) for multiplexing and communicating a plurality of messages. The first queue memory 331 of claim 2, wherein the first data temporary storage means 33 temporarily stores data output from the bare machine interface means 1 so that the first process can withdraw it. ; And a second queue memory 332 for temporarily storing data output from the second process so that the machine interface means can be withdrawn, and the second data temporary storage means 35 is the M-layer. And a third queue memory (351) for temporarily storing the output data from the functional means (36) so that the second process can withdraw it. In order to integrate and manage a variety of various network configuration apparatus (NE) (1), the man machine interface (MMI) means 31, which performs the interface function of the operator managing or maintaining, connected to the man machine interface means Management information base (MIB) means 32, a first data temporary storage means 33 connected to the bare machine interface means, a network management and a first data temporary storage means connected to the management information base means and Operating means 34, second data temporary storage means 35 connected to the network management and operation means, M-layer functional means 36 connected to the second data temporary storage, and the M-layer In a communication method using a communication processing network management apparatus having an X.25 layer functional means 37 connected between the functional means and the network forming apparatus 1, the connection request signal of the M-layer functional means (M_CR) About When a connection confirmation signal (M_CC) from the contralateral receiving (601) a first step of establishing a session; When data is transmitted together with the data transmission signal M_DT, the receiver transmits a signal M_AK indicating that the corresponding packet has been received, and if the transmission is large, the process is repeated until the last packet (602). 2nd step; And a third step of transmitting a truncation request signal (M_DR) and receiving a confirmation signal (M_DC) corresponding thereto and terminating the execution (603).