JP3270412B2 - Transmission device connection route setting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission apparatus connection route setting method, and more particularly to an SDH (Synchronous) method.
(Digital Hierarchy) When connecting an optical fiber of an optical transmission line to a transmission device, connection route information of the opposite transmission device is automatically collected and transferred, and a route between the transmission devices from the supervisory control device is automatically transmitted. The present invention relates to a transmission device connection route setting method for automating the setting.

[0002]

2. Description of the Related Art Conventionally, in a system for centrally managing an SDH network using an optical transmission line, a supervisory control unit is connected to perform operations such as operation, maintenance, monitoring, and control of the SDH network, and the monitoring and control device is connected to the system. The configuration is such that the control device displays the connection state of the transmission device and the transmission path. In order to display the connection status of these transmission devices and transmission paths, it is necessary for the monitoring and control device to collect the information. In the conventional centralized management system, this information is manually collected by the operator. I was typing. Also, when setting a transmission line using the monitoring and control device, it is necessary to manually register which path each of the transmission devices connected to both ends of the transmission line such as an optical fiber corresponds to.

[0003]

In the conventional centralized management system described above, even if a construction worker connects a transmission line to a transmission device incorrectly even if the connection is wrong, the information is not changed. There is a problem that an error is hard to be noticed because it is manually input to the monitoring control device separately, and the line does not connect even if a transmission line is set from the monitoring control device with an incorrect connection. Furthermore, in the case of a complicated network configuration, there is also a problem that there is a large possibility of an operator input error.

[0004] An object of the present invention is to solve the above-mentioned problems and to automate the collection of connection route information of a transmission device, thereby reducing the amount of work required for creation, registration, confirmation, and site adjustment of connection route information. In addition to improving the reliability of information collection, provide a function that allows operators and construction workers to visually check connection route information, and use the collected information to set route settings from the monitoring and control device. It is an object of the present invention to provide a transmission device connection route setting method which is automated to prevent operator input errors.

[0005]

According to a transmission device connection route setting method of the present invention, in an SDH network in which a supervisory control device and a plurality of transmission devices are interconnected by a transmission line, each of the plurality of transmission devices has An arbitrary number of route interface units for connecting transmission lines, a device unique information holding unit for holding information unique to the own transmission device, information obtained from the route interface unit, and the device unique information holding unit And a route table creating unit that creates a route table based on the information obtained from the above, and the route table created by the route table creating unit, wherein the transmission line is connected to the route interface unit. the after, the lateral relative transmission apparatus the route interface creates a route information from the information obtained from the device identifier retention unit, etc., which are connected in opposition to the transmission line The transmission device that has transmitted the information and received the route information passes the route information to the route table creating unit via its own route interface unit, and the route table creating unit transmits the received route. The route table is created from the information and the information obtained from the own route interface unit, and the monitoring control device transmits and receives a transmission signal to and from the transmission line, and receives the transmission signal from the plurality of transmission devices. A route setting unit that performs route setting using the route table, a monitoring control unit that performs monitoring control of the SDH network, an instruction input from an operator, and the transmission / reception control unit and the route setting. And a display operation unit for displaying information and the like obtained from the monitoring control unit. When the monitoring control device is instructed to set a route by an instruction from the display operation unit, the plurality of transmissions are performed. The laid et the route table received via the transmission and reception control unit passes to the route setting unit, the route setting unit performs path setting of each of said transmission path, characterized in that.

An arbitrary number of the route interface units of each of the plurality of transmission devices may include an optical interface unit for actually connecting the transmission line, and the route interface unit based on a transmission signal obtained from the optical interface unit. A route information processing unit that extracts information and passes the route table to the route table creating unit and passes the route table of the own transmission device to the optical interface unit. The optical signal is converted to an electric signal and passed to the route information processing unit, and the electric signal in the own transmission device is converted to an optical signal and transmitted to the transmission line. The route information is extracted from the electric signal passed from the device and passed to the route table creation unit, and the route table in the own transmission device is stored in the optical interface. Characterized in that passed to Esu unit.

Further, the route information processing unit further includes a route display unit, and the route display unit displays the route information on a display or the like.

The device-specific information holding units of the plurality of transmission devices each include a device ID of the own transmission device, the number of the route interface units of the own transmission device, and a number of the route interface unit. It is characterized by holding information unique to its own transmission device.

Further, the route information comprises a route interface unit number used by the own transmission device and a device ID of the own transmission device.

[0010] The route information is an SOH (Section) of an information frame transmitted in the SDH network.
Overhead (section overhead) is transmitted.

Further, the route table comprises a route interface unit number of the own transmission device, a facing device ID of the opposite transmission device, and a facing transmission device use route interface number of the opposite transmission device. Features.

Further, when the monitoring and control device is instructed to set a route by an instruction from the display / operation unit, it receives the route table from the plurality of transmission devices and determines the end of the route setting. If it is the end, the route setting process is ended. If it is not the end, the route table of the transmission devices at both ends of one transmission line is obtained, and the opposing device ID in the route table of the transmission device at both ends is obtained. Refer to and determine whether or not there is a connection between the mutually opposing devices. If there is no connection, proceed to the error processing step, and if there is a connection, refer to the opposing transmission device use route interface number of the mutually connected opposing devices. Then, it is determined whether or not there is any inconsistency in the use interface unit numbers of the opposing devices. If there is inconsistency, the process proceeds to the error processing step. Biography Returning to the step of determining the end of the route setting in order to perform the route setting of the route, and in the error processing step, after issuing a warning that the connection of the corresponding transmission route is invalid, the route setting of the next transmission route is performed. In order to perform the above, the process returns to the step of determining the end of the route setting, and the above processing steps are repeated to set a route for the entire SDH network.

[0013]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the SDH optical network of the present invention.

The present embodiment shown in FIG. 1 includes transmission devices 1 to 5 accommodating SDH optical transmission lines, transmission lines 6 to 13 composed of optical fibers and the like for transmitting signals between the transmission devices, and these SDH networks. And a supervisory control device 14 that performs centralized management of data.

The transmission devices 1 to 5 multiplex and demultiplex transmission signals, and each transmission device has an arbitrary number of route interface units (hereinafter, route IF units). The transmission lines 6 to 13 are connected to the respective route IF units of the transmission device to perform signal transmission between the transmission devices 1 to 5, and connect the monitoring control device 14 to a network. The monitoring control device 14
Control of setting of lines and the like between the transmission devices 1 to 5, monitoring of alarms and the like issued from the transmission devices and transmission lines, reading of device information and the like held by the transmission devices, display of SDH network status, and S
It has a function of issuing an alarm when an abnormality occurs in the DH network.

FIG. 2 is a detailed block diagram showing an example of the transmission device.

Referring to FIG. 2, in the transmission device 1, an arbitrary number n of route IF units (route interface units) 15 (15-1 to 15-1) are equal to the number of transmission lines accommodated in the transmission device 1.
5-n), a device unique information holding unit 18, a route table creating unit 19, and a route table 20 are provided. Here, the route IF unit 15 is connected to the optical interface unit 16 (1
6-1 to 16-n) and the route information processing unit 17 (17-1 to 17-n)
17-n). In FIG. 2, a multiplexing unit, a demultiplexing unit, and other necessary functional units, which are essential as a transmission device, are not shown because they are not closely related to the present invention. The transmission devices 2 to 5 shown in FIG. 1 also have the same configuration as the transmission device 1 in FIG.

In FIG. 2, a route IF unit 15 is an interface unit for accommodating a transmission line and connecting to a transmission device. An optical interface unit 16 which is a component of the route IF unit 15 controls the transmission line. It is actually connected to the transmission device, converts the optical signal from the transmission line into an electric signal and passes it to the inside of the transmission device and the route information processing unit 17, and converts the electric signal in the transmission device to an optical signal to To send to. Route IF unit 1
The route information processing unit 17, which is another component of the fifth embodiment, extracts route information from the transmission signal received from the transmission line, passes the extracted route information to the route table creation unit 19, and outputs the route information of the own transmission device. Is created based on the information collected from the device-specific information holding unit 18 and the like, and is passed to the optical interface unit 16 for transmission to the opposite transmission device. The device unique information holding unit 18 holds information unique to the own transmission device, such as the device ID of the own transmission device, the number of route IF units held by the own transmission device, and the number of the route IF unit. The information is output according to. The route table creator 19 uses the route information extracted and processed by the route information processor 17 to determine a connection relationship between the route IF of the own transmission device and the route IF of the opposite transmission device. It has a function of creating the table 20.

FIG. 3 is a detailed block diagram showing an example of the route information processing section of FIG.

In FIG. 3, the route information processing unit 17 includes an overhead input / output unit 21 and a route display unit 22.

The overhead input / output unit 21 is provided with an SOH (Section O) in the transmission signal received from the transmission path.
verhead: section overhead) and passes it to the route table creation unit 19, and creates route information of its own transmission device based on information collected from the device unique information holding unit 18 and the like, and And has a function of passing it to the optical interface unit 16 for transmission to the opposite transmission device. The optical interface unit 16 transmits the route table of the own transmission device to the monitoring control device.
It also has the function of passing to. The route display unit 22 displays the route information processed by the overhead input / output unit 21 on the transmission device or the SD
It has a function of displaying on a display etc. for use in maintenance of the H network.

The above route information is transmitted on the SOH of an information frame transmitted in the SDH network. SOH is usually used for applications such as frame synchronization, error monitoring, operation / maintenance, and the like. FIG. 4 is a Recommendation G.400 defining a network node interface structure in SDH. 708, G.R. 709 is a diagram illustrating a frame structure of an information frame conforming to 709. FIG. In the present embodiment, the above-described route information is transmitted in the SDH network using the byte indicated by Z2 in the SOH byte of the information frame in FIG.

FIG. 5 is a block diagram showing an example of the monitoring control device.

Referring to FIG. 5, a transmission / reception control unit 30, a route setting unit 31, a monitoring control unit 3
2. A display operation unit 33 is provided.

The transmission / reception control unit 30 accommodates the transmission path and
Various types of information necessary for monitoring and control are received from transmission devices and transmission paths in the DH network, and various types of information necessary for monitoring and control are transmitted to the transmission device and the like. The route setting unit 31 performs route setting of the SDH network using a route table or the like received via the transmission / reception control unit 30. The monitoring control unit 32 monitors the SDH network based on various types of information received via the transmission / reception control unit 30, and controls the SDH network in accordance with an instruction input from the display operation unit 33 and the like. The display operation unit 33 includes:
In accordance with an input from an operator or the like, an instruction is issued to the transmission / reception control unit 30, the route setting unit 31, and the monitoring control unit 32,
Various kinds of information on the SDH network obtained by the monitoring control device 14 are displayed on a display or the like, and an alarm is issued if necessary.

Next, the operation of the present embodiment will be described in more detail with reference to the block diagrams of FIGS. 1, 2, 3, and 5, and FIGS. 6, 7, 8, and 9.

FIG. 6 is a diagram showing an example of a connection path between transmission apparatuses in which three transmission apparatuses are connected to each other via transmission paths in order to explain the operation of the present embodiment.

In FIG. 6, each transmission device has the same function and configuration as the transmission device 1 shown in FIG.
3. The device IDs of the transmission device B24 and the transmission device C25 are 1, 2, and 3, respectively. The transmission device A23 uses the route IF unit with the route IF unit number 3 and transmits the data through the transmission line 26. The route IF number of the route IF unit of the transmission device B24 is 2
The transmission device B24 uses the route IF unit having the number 1 and transmits the transmission device C via the transmission line 27.
The case where the number 25 is connected to the route IF unit 2 is shown. After this, the number of the route IF unit will be
Expressed by the number in parentheses after the part character.

At this time, the transmission devices A, B, and C each transmit the route information shown in the route information transmitted by the transmission device in FIG.

Referring to FIG. 7, the transmission apparatus A uses the transmission apparatus A by using the function of the overhead input / output unit 21 with respect to the transmission path 26 connected to the route IF unit (3) of the transmission apparatus A. The device ID of the transmission device A is 1 due to the fact that the number of the route IF unit is the route IF unit (3), and the information obtained from the device unique information holding unit 18 and the function of the overhead input / output unit 21. This information is put on the SOH of the information frame and transmitted by the function of the optical interface unit 16. Here, this information is set as (a). Similarly, the transmission device B is connected to the route IF of the transmission device B.
To the transmission path 27 connected to the transmission unit B
If the route IF unit number of the transmission device B is the route IF unit (1)
Indicating that the device ID of the transmission device B is 2 (this is referred to as (b)), and the transmission route 26 connected to the route IF unit (2) of the transmission device B is used. Information indicating that the IF unit number is 2 in the route IF unit (2) and the device ID is 2 (referred to as (c)) is transmitted. In exactly the same way, the transmission device C
Is, for the transmission line 27 connected to the route IF unit (2) of the transmission device C, the use route IF unit number of the transmission device C is the route IF unit (2) and the device ID of the transmission device C is 3 is transmitted (referred to as (d)).

As described above, since each of the transmission devices A, B, and C transmits the route information of the own transmission device, each of the transmission devices transmits the route information of the opposing transmission device from the transmission line connected to the own transmission device. It becomes possible to receive information.

Next, the operation in which each transmission device creates a route table in its own device will be described with reference to FIG.

FIG. 8 is a diagram showing details of a route table included in each transmission device.

In FIG. 8, the route table of the transmission device A is created by the following procedure.

The transmission apparatus A receives the path information (c) shown in FIG. 7 from the transmission path 26 connected to the path IF unit (3) of the transmission apparatus A23. The received information is converted into an electric signal by the optical interface unit 16, and is used by the overhead input / output unit 21 for the use route I of the opposing transmission device.
Two pieces of information are extracted that the F section number is the route IF section (2) and the device ID of the opposing transmission apparatus is 2, and this is passed to the route table creation section 19. Also, the overhead input / output unit 21 sends this information to the route IF of its own transmission device.
The information indicating that the information has been received from the section (3) is also passed to the route table creating section 19. Based on the information, the route table creating unit 19 indicates that the route IF unit (3) of the own transmission device A is connected to the route IF unit (2) of the transmission device with the opposite device ID of 2. Recognizing that, the route table (referred to as (e)) of the transmission device A shown in FIG. 8 is completed.

The transmission device B is connected to the route I of the transmission device B.
While receiving the information of (d) of FIG. 7 from the F section (1),
Since the information of FIG. 7A is received from the route IF unit (2), the same process as that of the transmission device A is performed, and the route table of the transmission device B shown in FIG. And (g)
) Can be completed.

Similarly, the transmission device C completes the route table (referred to as (h)) of the transmission device C shown in FIG.

The overhead input / output unit 21 of each transmission device sends information such as the used route IF unit of the opposing transmission device to the route display unit 22, and the route display unit 22 displays the information as visible information on a display or the like. Since the display is performed, it becomes possible for a construction person or operator of the transmission path to visually check the connection path information.

Next, the route setting operation of the supervisory controller 14 will be described with reference to FIG.

FIG. 9 is a flowchart for setting a route in the monitoring control device.

The monitoring control device 14 starts the process of the route setting unit 31 in response to an instruction or the like input from the display operation unit 33.

When a process for setting a route is started (step S1), a route table of each transmission device is received from each transmission device connected to the SDH network (step S2). In the case of the network shown in FIG. 6, the route table (e) shown in FIG. 8 is received from the transmission device A, the route table (f) and (g) is received from the transmission device B, and the route table shown in FIG. Each of the route tables in (h) is received.

In step S2, it is determined whether or not the route setting has been completed. If the route setting has been completed, the route setting process ends (step S4). If not, the process proceeds to step S5.

In the following description, the case of the network shown in FIG. 6 is used, and the transmission device A23 and the transmission device B2
The case where the route setting of the transmission path 26 between 4 is performed will be described as an example.

In step S5, for one transmission path,
The route tables of the transmission devices at both ends of the transmission path are acquired. That is, the route table (e) of the transmission device A23 and the route table (f) of the transmission device B24 at both ends of the transmission line 26.
(G) to get.

Next, in step S6, referring to the opposing device ID in the route table of the transmission device at both ends, the process proceeds to step S6.
At 7, it is determined whether or not there is a connection between the opposing devices of the mutual transmission devices. Since the opposite device ID is 2 in the route table (e), the transmission device A is connected to the transmission device B, and the opposite device ID is 1 in the route table (g).
Therefore, it can be understood that the transmission device B is connected to the transmission device A, and therefore, it can be determined that the transmission device A and the transmission device B are connected to each other.

If the result of determination in step S7 is that there is mutual connection, the flow proceeds to step S8, and if there is no mutual connection, the flow proceeds to step S10 because an error has occurred.

In step S8, it is determined whether or not there is any inconsistency in the use route IF numbers of the opposing devices in step S9 with reference to the opposing transmission device use route IF numbers of the mutually connected devices. I do. That is, here, the route table of the transmission device A is referred to from the route table of the transmission device A by referring to the route table of the transmission device A and the route table of the transmission device B.
It can be seen that the F unit (3) is connected to the route IF unit (2) whose counterpart device ID is 2 (that is, the transmission device B),
From (g), it can be seen that the route IF unit (2) of the transmission device B is connected to the route IF unit (3) of which the opposite device ID is 1 (that is, the transmission device A). It can be determined that there is not.

If the result of determination in step S9 is that there is no mutual inconsistency, the flow proceeds to step S11, and if there is mutual inconsistency, the flow proceeds to step S10 because an error is present.

In step S10, a warning is issued to the effect that the connection of the corresponding transmission path is incorrect in order to indicate that the setting of the path was impossible due to some error. The warning may be issued by, for example, displaying on the display of the monitoring control device. Upon completion of the process in the step S10, the process returns to the step S3 for setting the route of the next transmission line.

In step S11, since it is determined that there is no error in the route setting of the corresponding transmission line, the route setting is performed for the corresponding transmission line. In the case of this example, transmission line 2
6 is connected to the route IF unit (3) of the transmission device A,
The other sets the information that it is connected to the route IF unit (2) of the transmission device B. When the route setting is completed, the process returns to step S3 for setting the route of the next transmission line.

By repeating the above steps, FIG.
Information such as the route setting information of the monitoring control device 0 can be set in the monitoring control device.

Here, the route setting information shown in FIG.
It can be said that the structure of an example of the connection path between the transmission devices shown in FIG. 6 is faithfully computerized as it is.

In this way, it is possible to automatically set a route between the transmission devices.

[0056]

As described above, the transmission device connection route setting method of the present invention can automatically collect and transfer the route information of the opposing transmission device. Since it is possible to automate the route setting between each transmission device from the transmission route, it is possible to remotely check the connection route information of the opposite transmission device at the time of the connection construction of the transmission line. I have.

Further, there is an effect that the connection route information of the actual transmission line can be confirmed on the monitoring control device.

Further, since the route setting which has conventionally been manually performed by the operator is automated, there is also an effect that the route setting error caused by the operator's input operation error can be eliminated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of an SDH optical network of the present invention.

FIG. 2 is a detailed block diagram illustrating an example of a transmission device.

FIG. 3 is a detailed block diagram illustrating an example of a route information processing unit.

FIG. 4 is a diagram showing a frame structure of an information frame.

FIG. 5 is a block diagram illustrating an example of a monitoring control device.

FIG. 6 is a diagram illustrating an example of a connection route between transmission devices.

FIG. 7 shows route information transmitted by the transmission device.

FIG. 8 is a diagram illustrating details of a route table included in each transmission device.

FIG. 9 is a flowchart for setting a route in the monitoring control device.

FIG. 10 shows route setting information of the monitoring control device.

[Explanation of symbols]

 1 to 5 transmission device 6 to 13 transmission line 14 supervisory control device 15 route IF unit (route interface unit) 16 optical interface unit 17 route information processing unit 18 device unique information holding unit 19 route table creation unit 20 route Table 21 Overhead input / output unit 22 Route display unit 23 Transmission device A 24 Transmission device B 25 Transmission device C 26 Transmission line 27 Transmission line 30 Transmission / reception control unit 31 Route setting unit 32 Monitoring control unit 33 Display operation unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04J 3/00 H04L 12/00

Claims (8)

(57) [Claims] An SDH (Synchronous D) in which a supervisory control device and a plurality of transmission devices are interconnected by a transmission line.
digital Hierarchy: Synchronous digital
Hierarchy) network, each of the plurality of transmission devices has an arbitrary number of route interface units for connecting the transmission lines, a device-specific information holding unit for holding information unique to its own transmission device, A route table creating unit that creates a route table based on information obtained from a route interface unit and information obtained from the device-specific information holding unit; and the route table created by the route table creating unit. After the transmission path is connected to the route interface unit, the route interface unit
Creates route information from information obtained from the device-specific information holding unit and the like , transmits the route information to a transmission device connected to the transmission path, and receives the route information. The apparatus passes the route information to the route table creating unit via the own route interface unit, and the route table creating unit determines the route information from the received route information and information obtained from the own route interface unit. A transmission / reception control unit that creates a route table, the monitoring control device transmits and receives a transmission signal to and from the transmission line, and performs route setting using the route table received from the plurality of transmission devices. A route setting unit, a supervisory control unit that performs supervisory control of the SDH network, and receives instructions input by an operator and displays information obtained from the transmission / reception control unit, the route setting unit, and the supervisory control unit. table Having an operation unit, when the monitoring control device is instructed to set a route by an instruction from the display operation unit, receiving the route table from the plurality of transmission devices via the transmission and reception control unit A transmission device connection route setting method, wherein the route is passed to the route setting unit, and the route setting unit sets each route of the transmission path. 2. An arbitrary number of said route interface units of each of said plurality of transmission devices, said optical interface unit actually connecting said transmission line, and said route interface unit from a transmission signal obtained from said optical interface unit. A route information processing unit that extracts information and passes the route table to the route table creating unit and passes the route table of the own transmission device to the optical interface unit. The optical signal is converted to an electric signal and passed to the route information processing unit, and the electric signal in the own transmission device is converted to an optical signal and transmitted to the transmission line. The route information is extracted from the electric signal passed from the device and passed to the route table creating unit, and the route table in the own transmission device is stored in the optical interface. 2. The transmission device connection route setting method according to claim 1, wherein the transmission route is passed to a transmission unit. Wherein the route information processing unit has a further way path display unit, the route display unit, according to claim 2, characterized in that displaying the route information on a display or the like Transmission device connection route setting method. 4. The device-specific information holding unit of each of the plurality of transmission devices includes a device ID of the own transmission device, the number of the route interface units of the own transmission device, a number of the route interface unit, and the like. 2. The transmission device connection route setting method according to claim 1, wherein information specific to the transmission device is held. 5. The transmission device according to claim 1, wherein the route information includes a used route interface number used by the transmission device and a device ID of the transmission device. Connection route setting method. 6. The route information includes an SOH (Section Ov) of an information frame transmitted in the SDH network.
2. The transmission device connection path setting method according to claim 1, wherein the transmission is performed by carrying the data on an "erhead: section overhead". 7. The route table according to claim 1, wherein the route table includes a route interface unit number of the own transmission device, a facing device ID of the facing transmission device, and a facing transmission device use route interface number of the facing transmission device. The transmission device connection route setting method according to claim 1, wherein: 8. When the monitoring control device is instructed to set a route by an instruction from the display operation unit, the monitoring control device receives the route table from the plurality of transmission devices and determines the end of the route setting. If it is over, end the route setting process,
If it is not the end, obtain the route tables of the transmission devices at both ends of one transmission path, refer to the opposing device ID in the route table of the transmission devices at both ends, and check if there is a connection between the opposing devices. If there is no connection, proceed to the error processing step, and if there is a connection, refer to the opposite transmission device use route interface unit number of the mutually connected opposite device, and use the mutual route interface unit of the opposite device. It is determined whether there is no inconsistency in the numbers. If there is an inconsistency, the process proceeds to an error processing step. Returning to the step of determining the end of the setting, in the error processing step, after issuing a warning that the connection of the corresponding transmission path is invalid, determining the end of the path setting to perform the path setting of the next transmission path To Tsu return to up, or processing the transmission apparatus connected route setting method of claim 1, step a repeated and performs path setting of the entire SDH network.