JP2006086572A - Sdh/sonet apparatus and line setting update method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To relieve a line connection management load imposed on a network administrator in an SDH/SONET apparatus. <P>SOLUTION: A transmission line update information extract section 110 extracts transmission line update information 200 from a path overhead of a main signal, a receiver side update information processing section 120 compares an End CH ID of the transmission line update information 200 with a channel number of its own node, when the End CH ID is coincident with the channel number of its own node, a transmission line revision information processing section 156 uses a cross connect control section 153 to connect a channel designated by the transmission line update information 200 and a channel receiving the transmission line update information 200 or to delete them, and when the End CH ID is dissident with the channel number of its own node, the transmission line revision information processing section 156 uses the cross connect control section 153 to carry out line connection or deletion for passing the transmission line update information 200. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an SDH (Synchronous Digital Hierarchy) / SONET (Synchronous Optical Network) apparatus that configures a network capable of adding a new transmission line and deleting an existing transmission line as a transmission line update, and its line setting update. More particularly, the present invention relates to an SDH / SONET apparatus that can reduce the burden of line management by a network administrator and a line setting update method thereof.

  In the SDH / SONET network, it is necessary to perform line setting (cross-connect) for each node (SDH / SONET device) constituting the network when adding a transmission line.

  Conventionally, this line setting has been performed by a network administrator from a dedicated monitoring control device or the like to each node on the network one by one (see, for example, Patent Documents 1 and 2). Also, when deleting an existing transmission line, the network administrator deletes the line setting for each line.

JP 2000-252941 A JP 2000-341309 A

  However, as the capacity of the accommodated lines of the nodes constituting the network increases, the number of line settings for each node increases, and there is a problem that much labor and time are required for line setting and deletion.

  The present invention has been made to solve the above-described problems caused by the prior art, and an SDH / SONET apparatus capable of reducing the burden of line management such as line setting and deletion by a network administrator, and its line setting. The purpose is to provide an update method.

  In order to solve the above-described problems and achieve the object, the SDH / SONET apparatus according to the invention of claim 1 sets a new transmission path across a plurality of SDH / SONET apparatuses and deletes an existing transmission path. An SDH / SONET apparatus constituting an SDH / SONET network that can be performed as an update, a transmission path update information extracting unit that extracts transmission path update information that is information relating to transmission path update from the received main signal; Transmission line update means for changing the line setting based on the transmission line update information extracted by the transmission line update information extraction means.

  According to the first aspect of the present invention, the transmission path update information, which is information related to the transmission path update, is extracted from the received main signal, and the line setting is changed based on the extracted transmission path update information. The line setting of the SDH / SONET device can be easily updated.

  The SDH / SONET device according to the second aspect of the present invention, in the first aspect of the invention, accepts a transmission path update instruction from a user, and based on the received transmission path update instruction, The present invention is characterized by further comprising transmission path update information generation means for changing the line setting in the apparatus and generating transmission path update information and inserting it into the main signal.

  According to the second aspect of the present invention, the transmission path update instruction from the user is received, the line setting in the local apparatus is changed based on the received transmission path update instruction, with the local apparatus as the starting point of the transmission path, and the transmission path Since the update information is generated and inserted into the main signal, the line setting of the SDH / SONET device that is the starting point of the transmission path can be easily updated.

  According to a third aspect of the present invention, in the SDH / SONET apparatus according to the first aspect of the present invention, the transmission path update means is such that the transmission path update information extracted by the transmission path update information extraction means is addressed to the own apparatus. If it is determined that the transmission path update information is addressed to the own apparatus, the line setting is changed based on the transmission path update information, using the own apparatus as the end point of the transmission path, and the transmission path update information Is determined not to be addressed to the own device, the setting of the line through which the data passes through the own device is changed.

  According to the third aspect of the present invention, it is determined whether or not the extracted transmission path update information is addressed to the own apparatus, and when it is determined that the transmission path update information is addressed to the own apparatus, the transmission path update information is Based on the above, the line setting is changed with the own device as the end point of the transmission path, and when it is determined that the transmission path update information is not addressed to the own apparatus, the setting is changed for the line through which the data passes through the own apparatus. Therefore, it is possible to easily update the line setting of the SDH / SONET apparatus that is the end point or intermediate point of the transmission path.

  According to a fourth aspect of the present invention, in the SDH / SONET apparatus according to the first aspect of the present invention, the transmission path update information extracted by the transmission path update information extracting means is transmission path setting information for a newly set transmission path. And the transmission path update means performs line connection based on the transmission path setting information extracted by the transmission path update information extraction means.

  According to the fourth aspect of the present invention, the extracted transmission line update information is transmission line setting information for a newly set transmission line, and is configured to perform line connection based on the extracted transmission line setting information. Each SDH / SONET device can be easily connected to the line.

  In addition, the line setting update method according to the invention of claim 5 is an SDH / SONET network capable of setting a new transmission path across a plurality of SDH / SONET devices and deleting an existing transmission path as a transmission path update. A line setting update method for the SDH / SONET apparatus constituting the transmission line update information extracting step for extracting transmission line update information that is information relating to transmission line update from the received main signal, and the transmission line update information extracting step And a transmission path update step of changing the line setting based on the transmission path update information extracted by the above.

  According to the fifth aspect of the present invention, the transmission path update information, which is information related to the transmission path update, is extracted from the received main signal, and the line setting is changed based on the extracted transmission path update information. The line setting of the SDH / SONET device can be easily updated.

  According to the first and fifth aspects of the present invention, the line setting of each SDH / SONET device can be easily updated, so that the burden of line management by the network manager can be reduced.

  According to the second aspect of the present invention, it is possible to easily update the line settings of the SDH / SONET device that is the starting point of the transmission path, so that the burden of line management by the network administrator can be reduced. There is an effect.

  According to the third aspect of the present invention, it is possible to easily update the line settings of the SDH / SONET device that is the end point or intermediate point of the transmission path, thereby reducing the burden of line management by the network administrator. There is an effect that can be.

  In addition, according to the invention of claim 4, since it is possible to easily connect the lines of the respective SDH / SONET apparatuses, it is possible to reduce the burden of line management by the network manager.

  Exemplary embodiments of an SDH / SONET apparatus and its line setting update method according to the present invention will be explained below in detail with reference to the accompanying drawings. In the present embodiment, the case where the present invention is applied to a SONET device used in a ring network will be mainly described.

  First, the configuration of the SONET device according to the present embodiment will be described. FIG. 1 is a functional block diagram illustrating a configuration of a SONET device according to the present embodiment. As shown in the figure, the SONET device 100 includes a transmission path update information extraction unit 110, a reception side update information processing unit 120, a transmission path update information insertion unit 130, a line connection unit (cross-connect unit) 140, And a control unit 150.

  The transmission path update information extraction unit 110 extracts transmission path update information inserted in empty bytes of the main signal path overhead or path overhead that is not always used (for example, J1 byte, Growth byte, etc.). It is a processing unit.

  Here, the path overhead is an area in a transmission frame for transmitting operation information regarding multiplexed transmission sections (paths). The transmission path update information can also be inserted into a section overhead, which is an area for transmitting operation information for state management and maintenance of the transmission section (section).

  The transmission path update information is information transmitted / received between nodes for setting a new transmission path across a plurality of nodes and deleting an existing transmission path. FIG. 2 is a diagram illustrating a data structure of transmission path update information. As shown in the figure, the transmission path update information 200 includes F-bit, output port, Request / Status, Start Node ID, Start CH ID, End Node ID, and End CH ID. included.

  F-bit is a frame bit or a frame pattern indicating the transmission path update information 200. The output port is an ID of a port that has transmitted the transmission path update information 200 at the origin node into which the transmission path update information 200 has been inserted, and the transmission path update information 200 transmitted from which port when status information to be described later is returned. Used to identify the status information.

  Request / Status is information indicating whether the transmission path update information 200 is control information or status information. That is, this Request / Status is information indicating whether the transmission path is set / deleted or status information indicating whether the transmission path is set / deleted.

  The Start Node ID is the node ID of the transmission source (origin node) of the transmission path update information 200, and the Start CH ID is the channel ID of the transmission source of the transmission path update information 200. End Node ID is the node ID of the transmission destination (end point node) of the transmission path update information 200, and End CH ID is the channel ID of the transmission destination (end point) of the transmission path update information 200.

  FIG. 3 is a diagram showing details of the transmission path update information 200. As shown in the figure, the output port has a Sending Slot ID that is a slot number of an interface card in a node in which the transmission path update information 200 is inserted, and a Sending Port ID that is a port number of the interface card. It consists of.

  The Start CH ID includes a Start Slot ID that is a slot number of an interface card in the origin node, a Start Port ID that is a port number of the interface card, and an STS (Synchronous Transport Signal) channel in the port. It consists of the Start STS CH ID which is a number.

  The End CH ID is an End Slot ID that is a slot number in which an interface card in the end node is inserted, an End Port ID that is a port number of the interface card, and an End STS that is an STS channel number in the port. It consists of CH ID.

  Request / Status includes R / S, Create / Delete, 1way / 2way, arrival information node, and arrival information CH, each of which is 1-bit information. R / S is a bit indicating whether Request / Status is request information for executing transmission line setting / deletion or execution result status information. If the value is "1", it indicates request information, and if it is "0", status information is displayed. Show.

  Create / Delete is a bit indicating whether to set or delete a transmission path. If the value is “1”, it indicates setting, and if it is “0”, it indicates deletion. This Create / Delete is effective when R / S indicates request.

  1way / 2way is a bit that indicates whether to set or delete the transmission path only in one direction or in both directions. If the value is "1", it is executed in both directions (2way), and if it is "0", it is only in one direction (1way). Indicates implementation. This 1way / 2way is effective when R / S indicates request.

  The arrival information Node is a bit indicating whether or not the transmission path update information 200 has reached the end node indicated by the End Node ID. If the value is “1”, the arrival information Node is reached. This arrival information node is effective when R / S indicates status.

  The arrival information CH is a bit indicating whether or not the transmission path setting / deletion has succeeded in the channel of the End CH ID indicated by the transmission path update information 200 in the end node. If the value is “1”, execution / success is indicated. Indicates failure. This arrival information CH is valid when R / S indicates status.

  In the terminal node, when line connection / deletion is executed for a predetermined channel by the transmission path update information 200, the R / S is changed to status and the arrival information Node / CH is changed to a value indicating arrival / success, thereby free space overhead. insert.

  In addition, in the end node, when the line connection / deletion cannot be executed for a predetermined channel by the transmission path update information 200, R / S is set to status, the arrival information Node is reached, and the arrival information CH is set to a value indicating unsuccessful. Change and insert into free section overhead. By receiving these pieces of information at the starting node, it is possible to confirm that the transmission path update has been executed.

  Note that line overhead (eg, DCC byte, J0 byte, etc.) can be used instead of the empty section overhead. Reserved is a bit for future expansion.

  The reception side update information processing unit 120 determines whether or not the transmission path update information 200 extracted by the transmission path update information extraction unit 110 relates to the own apparatus, and sends the determined result to the control unit 150 together with the transmission path update information 200. It is a processing unit to notify. Specifically, the receiving side update information processing unit 120 compares the End Node ID in the transmission path update information 200 with the node number of the own device, and notifies the control unit 150 whether or not they match. To do.

  The transmission path update information insertion unit 130 is a processing unit that inserts the transmission path update information 200 generated by the control unit 150 into empty bytes of the main signal path overhead or path overhead that is not always used.

  The line connection unit (cross-connect unit) 140 is a processing unit that connects main signals, and is a circuit connection (cross-connect) between the origin channel or the reception side channel and the transmission side channel, or between the reception side channel and the end point channel. The main signal is connected by performing line connection.

  The control unit 150 is a processing unit that controls the cross-connect based on the transmission path update information 200 extracted from the path overhead. Further, the control unit 150 generates transmission line update information 200 based on a transmission line update instruction from the user, and requests the transmission line update information insertion unit 130 to insert it into the main signal. The function of the control unit 150 can be realized by a program executed by the CPU.

  The control unit 150 includes a line database 151, a cross-connect search unit 152, a cross-connect control unit 153, a transmission path update information generation unit 154, a command processing unit 155, and a transmission path update information processing unit 156. .

  The line database 151 is a database that stores line connection information, is searched by the cross-connect search unit 152, and is updated by the transmission path update information processing unit 156.

  The cross-connect search unit 152 is a processing unit that searches the line database 151 based on an instruction from the transmission line update information processing unit 156. When setting a new transmission line, the cross-connect search unit 152 searches for a channel that is not set with a line. When deleting an existing transmission path, a channel corresponding to the transmission path to be deleted is searched.

  The cross-connect control unit 153 is a processing unit that controls the setting of the line connection unit 140 based on an instruction from the transmission line update information processing unit 156. The cross connection control unit 153 performs line setting and line deletion, and transmits the result as transmission line update information. The processing unit 156 is notified.

  The transmission path update information generation unit 154 is a processing unit that generates transmission path update information 200 based on an instruction from the transmission path update information processing unit 156. The transmission path update information 200 generated by the transmission path update information generation section 154 is passed to the transmission path update information insertion section 130 and inserted into the main signal path overhead.

  The command processing unit 155 is a processing unit that receives a transmission path update command from a user and transmits the received transmission path update command to the transmission path update information processing unit 156.

  The transmission path update information processing unit 156 is a processing unit that processes the transmission path update information 200 using the cross-connect search unit 152, the cross-connect control unit 153, and the transmission path update information generation unit 154.

  That is, when the transmission path update information processing unit 156 receives the transmission path update command from the command processing unit 155, the transmission path update information generation unit generates the transmission path update information 200 based on the received transmission path update command. 154 is instructed.

  In addition, when the transmission path update information processing unit 156 receives the transmission path update information 200 from the reception side update information processing unit 120, the transmission path update information processing unit 156 sends a channel whose setting is changed to the cross-connect search unit 152 based on the transmission path update information 200. Based on the search result, the cross-connect control unit 153 is instructed to set or delete a line.

  The transmission path update information processing unit 156 causes the cross-connect search unit 152 to search for a channel whose setting is to be changed based on the transmission path update information 200, and based on the search result, the cross-connect control unit 153 sets the line setting or Necessary for setting a new transmission path or deleting an existing transmission path by instructing the transmission path update information generation unit 154 to generate the transmission path update information 200 based on the transmission path update command. It is possible to set a simple line and delete a line.

  Next, operations when the SONET device 100 operates as a start node, an end node, and an intermediate node will be described with reference to FIGS. Here, a case where a new transmission path is set will be described.

  FIG. 4 is an explanatory diagram for explaining the operation of the origin node. As shown in the figure, at the starting node in the connection of the main signal, the control unit 150 searches the line database 151 based on a transmission path setting command from the user, and the channel (FIG. Find CH sn), and set the starting channel and line (broken line in the figure).

  At this time, the control unit 150 generates the transmission line update information 200 based on the line setting and the transmission line setting command from the user, and sends it to the transmission line update information insertion unit 130-n. Here, in the output port of the transmission path update information 200, the port ID of the transmission path update information insertion unit 130-n and data indicating line setting control are set in the Request / Status. The transmission path update information insertion unit 130-n inserts the transmission path update information 200 sent from the control unit 150 into the path overhead of the main signal.

  FIG. 5 is an explanatory diagram for explaining the operation of the end point node. As shown in the figure, the terminal node that has received the transmission path update information 200 extracts the transmission path update information 200 from the main signal in the transmission path update information extraction unit 110-n, and sends it to the reception side update information processing unit 120. send. Then, the receiving-side update information processing unit 120 compares the End Node ID extracted from the transmission path update information 200 with the Node ID of the own station, and determines a match / mismatch.

  As a result, when the End Node ID and the Node ID of the own station match, the control unit 150 determines that the own station is the end node, and receives the channel that has received the transmission path update information 200 and the end point indicated by the End CH ID. Line connection is made between channels CH en (broken line in the figure).

  FIG. 6 is an explanatory diagram for explaining the operation of the intermediate node. As shown in the figure, the node that has received the transmission path update information 200 compares the End Node ID of the transmission path update information 200 with the Node ID of the own station in the same way as the end point node, and determines whether or not they match.

  As a result, if the End Node ID and the Node ID of the own station do not match, the control unit 150 determines that the own station is an intermediate node, searches the line database 151, and receives the transmission path update information 200. A channel that has not yet been connected to the line is searched for from the port of the channel and the opposite port in the ring configuration, and the channel that has received this channel and the transmission path update information 200 is set as a line (broken line in the figure).

  At this time, the transmission path update information insertion unit 130-n of the channel for which the line has been set is notified of the transmission path update information 200 extracted by the transmission path update information extraction unit 110-n as it is, and the transmission path update information insertion unit 130-n. Insert into the main signal path overhead at n.

  As described above, when each SONET device 100 operates as a start node, an end node, or an intermediate node, it is possible to set a transmission path across a plurality of nodes. In addition, it is possible to delete a transmission path across a plurality of nodes by a similar operation.

  Next, a processing procedure of transmission path setting processing by the SONET device 100 according to the present embodiment will be described. FIG. 7A to FIG. 7C are flowcharts illustrating the processing procedure of the transmission path setting process by the SONET device 100 according to the present embodiment.

  As illustrated in FIG. 7A, when the transmission path update information processing unit 156 receives transmission path setting control from the user via the command processing unit 155 (Yes in step S101), the SONET device 100 crosses nodes. It is determined whether or not the transmission path is set (step S102). If the transmission path is not set across the nodes, the line is set in the node and the process is terminated (step S103).

  On the other hand, in the case of setting a transmission path across nodes, it is determined whether or not there is an empty channel on the network side using the cross-connect search unit 152 (step S104). The request is canceled (step S105).

  On the other hand, when there is an empty channel on the network side, the transmission path update information generation unit 154 generates transmission path update information 200 (step S106), and the cross-connect control unit 153 executes line connection (step S107). . Then, the transmission path update information insertion unit 130 receives the transmission path update information 200 generated by the transmission path update information generation unit 154 and inserts it into the path overhead of the main signal (step S108).

  On the other hand, as shown in FIG. 7-2, when the transmission path update information 200 is received (Yes at Step S109), the receiving side update information processing unit 120 matches the End Node ID with its own Node ID. (Step S110), if they match, since it is the end node, the transmission path update information processing unit 156 determines whether the channel specified by the transmission path update information 200 is free. Is determined using the cross-connect search unit 152 (step S111).

  As a result, when the channel designated by the transmission path update information 200 is not free, the transmission path update information 200 is notified using the transmission path update information 200 (step S112), and the process ends.

  On the other hand, when the channel specified by the transmission path update information 200 is free, the line connection is performed using the cross-connect control unit 153 (step S113), and the transmission path update information 200 indicating the completion of the connection is updated. The information generation unit 154 is generated (step S114). Then, the transmission path update information insertion unit 130 receives the transmission path update information 200 and inserts it into the path overhead of the main signal (step S115).

  On the other hand, if the End Node ID does not match its own Node ID, it is an intermediate node, so that the transmission path update information processing unit 156 performs transmission path update information as shown in FIG. The cross-connect search unit 152 determines whether or not the channel on the opposite side to the line that received 200 is available (step S116). Notification is made using the information 200 (step S117), and the process is terminated.

  On the other hand, when the channel of the line on the opposite side to the line that has received the transmission path update information 200 is free, line connection is performed using the cross-connect control unit 153 (step S118), and the received transmission path update information is received. 200 is inserted into the path overhead of the main signal by the transmission path update information insertion unit 130 (step S119).

  As described above, when the transmission path update information processing unit 156 receives a transmission path setting command from the user, the transmission path update information processing unit 156 performs processing as a starting node, and when receiving the transmission path update information 200, the End Node ID If the node ID matches the node ID, the end node is processed, and if the end node ID matches the node ID, an intermediate node is processed to create a new transmission path across multiple nodes. Can be set.

  In the SONET device, it is defined that UNEQ (unequipped) is transmitted from a channel for which no line setting has been made. On the contrary, the fact that UNEQ is received means that the line is not set in the node before the previous stage, that is, this line is not used. Therefore, by setting the reception of the UNEQ code as a condition for searching for a channel for setting the line in the control unit 150, the line setting can be simultaneously performed.

  That is, in FIG. 8A, since the line setting is not performed in Node B, the UNEQ code is transmitted to Node A. At this time, when searching for an empty channel in Node A, line setting is not performed in the main signal transmission direction, and bidirectional line setting is performed by searching for a channel receiving the UNEQ code on the receiving side (indicated by a broken line in the figure). ) Is possible.

  Further, in FIG. 8B, since the line setting is not performed in Node C as described above, the UNEQ code is transmitted to Node B. At this time, when searching for an empty channel in Node B, line setting is not performed in the main signal transmission direction, and bidirectional channel setting is performed by searching for a channel receiving the UNEQ code on the receiving side (indicated by a broken line in the figure). ) Is possible.

  Further, in FIG. 8C, since the line setting is not performed in Node C, the UNEQ code is transmitted to Node B. Since Node B as an intermediate node has already been set up, it passes the UNEQ code from Node C to Node A. At this time, when searching for an empty channel in Node A, line setting is not performed in the main signal transmission direction, and bidirectional line setting is performed by searching for a channel receiving the UNEQ code on the receiving side (indicated by a broken line in the figure). ) Is possible.

  In addition, Node B, which is an intermediate node, has a line that has received transmission path update information 200 from Node A (a channel that was not used in Node A) and a line that has received a UNEQ code from Node C (in Node C). If the channel that has not been set) has already been set, it can be determined that this bidirectional path has not been used outside the local station. It can be determined that the channel is equivalent to an empty channel that has not been selected, and this path can be selected.

  In addition, when channel setting is performed at each node, a channel that has received transmission path update information 200 at a node that is an end point in transmission path update information 200 is already connected to a channel other than the end point channel indicated in transmission path update information 200. Setting may have been made (one-dot broken line in FIG. 9).

  In this case, a channel that is not line-set is searched for in the nodes up to the previous stage, and a new line is set (broken line in FIG. 9). Therefore, it is determined that the existing line setting is meaningless at the end node. It is possible to delete this line setting. Therefore, it is possible to forcibly delete this line setting and newly set a line according to the transmission path update information 200 (dotted line in FIG. 9). In addition, when a line has already been set for the channel that has received the transmission path update information 200 and the end point channel indicated in the transmission path update information 200, it can be used as it is.

  Next, an example of transmission line update will be described with reference to FIGS. 10 to 13 are diagrams (1) to (4) illustrating examples of transmission line updating.

  FIG. 10 shows a case where a new transmission path is set from CH3 of Node A Line 3 to CH3 of Node C Line 4. In this case, the user inputs a command for instructing it to Node A from the network management device or the craft port. Here, a line such as Line3 is specified by a slot number and a port number.

  With this command, Node A searches for the channel in CH3 of Line3 and the channel in Line1 and Line2, searches for a channel for which no line is set, and sets the line for that channel. Next, Node A has its own node ID (ID = A in the example), its channel number (Line3, CH3 in the example), and the node ID (ID = C in the example) to drop the signal in the free path overhead of the channel for which the line is set. ) And channel number information (Line 4 and CH 3 in the example) are inserted in both directions of Line 1 and Line 2.

  In Node B and Node D, since the node ID for dropping the signal in the transmission path update information 200 transmitted from Node A does not match the own node ID, the opposite side to the line from which the transmission path update information 200 comes In the same way as Node A, an empty channel is searched from among the channels of this line, a line is set, and the transmission path update information 200 is inserted as it is into the empty path overhead of the channel set.

  Since Node C matches the node ID for dropping the signal in the transmission path update information 200 from Node A with its own node ID, the channel through which the transmission path update information 200 is sent and the transmission path update information 200 Set up the channel specified by.

  FIG. 11 shows a case where a line is connected from CH3 of Line 3 of Node A to CH3 of Line 4 of Node C using UNEQ. In this case, the user inputs a command for instructing it to Node A from the network management device or the craft port.

  Node A searches for the channel in CH3 of Line3 and Line1 and Line2 by this command, finds the channel where the line is not set and detects the UNEQ on the receiving side, and sets the channel in both directions. Configure line settings. Next, Node A has its own node ID (ID = A in the example), its channel number (Line3, CH3 in the example), and the node ID (ID = C in the example) to drop the signal in the free path overhead of the channel for which the line is set. ) And channel number information (Line 4 and Ch 3 in the example) are inserted in both directions of Line 1 and Line 2.

  In Node B and Node D, since the node ID for dropping the signal in the transmission path update information 200 transmitted from Node A does not match the own node ID, the opposite side to the line from which the transmission path update information 200 comes In the same way as Node A, a free channel is searched from among the channels of this line, and the line is set in both directions.

  Since Node C matches the node ID for dropping the signal in the transmission path update information 200 from Node A with its own node ID, the channel through which the transmission path update information 200 is sent and the transmission path update information 200 Set up the channel specified by.

  FIG. 12 shows a case where the line setting has already been performed from Line 1 and Line 2 to CH1 of Line 5 at Node C. In this case, since a new line setting is performed by searching for a channel for which no line setting is performed in Node B and Node D, this line setting in Node C is originally isolated. Therefore, this line setting can be deleted, and Node C can set a line for a predetermined channel according to the transmission path update information 200.

  FIG. 13 shows a case where it is desired to disconnect the CH3 line of Node A Line 3 from CH3 of Node A Line 4. In this case, the user inputs a command for instructing it to Node A from the network management device or the craft port.

  Node A uses this command to disconnect the line setting already connected in CH3 and Line1 and Line2 of Line3, and its own node ID (ID = A in the example) and its channel are added to the free path overhead of the channel that disconnected the line. The information of the number (Line 3 and CH 3 in the example), the node ID (ID = C in the example) dropping the signal and the channel number (Line 4 and Ch 3 in the example) are inserted in both the Line 1 and Line 2 directions.

  In Node B and Node D, the node ID for dropping the signal in the transmission path update information 200 transmitted from Node A does not match the own node ID. The line of the channel on the opposite side is disconnected, and the transmission path update information 200 is inserted as it is into the empty path overhead of the channel where the line is disconnected.

  Since Node C matches the node ID for dropping the signal in the transmission path update information 200 from Node A with its own node ID, the channel through which the transmission path update information 200 is sent and the transmission path update information 200 Disconnects the channel specified by.

  As described above, in this embodiment, when the transmission path update information processing unit 156 receives a transmission path update command via the command processing unit 155, the channel to be connected or deleted is selected using the cross-connect search unit 152. Search and connect to or delete from the channel specified by the transmission path update command using the cross-connect control unit 153, generate transmission path update information 200 using the transmission path update information generation unit 154, and transmit transmission path update information. Insertion section 130 inserts transmission path update information 200 generated by transmission path update information generation section 154 into the path overhead of the main signal.

  In the present embodiment, the transmission path update information extraction unit 110 extracts the transmission path update information 200 from the path overhead of the main signal, and the reception side update information processing section 120 detects the End CH ID of the transmission path update information 200 and the own node. The channel update information processing unit 156 receives the channel specified by the channel update information 200 and the channel update information 200 when the End CH ID matches the channel number of the own node. If the end CH ID and the channel number of the own node do not match with each other using the cross-connect control unit 153, the cross-connect control unit determines whether to connect or delete the line that passes the transmission path update information 200. 153.

  Therefore, it is possible to automatically set or delete a new transmission path across a plurality of nodes, and to reduce the burden of line management by the network administrator.

  In the present embodiment, the SONET device used in a ring-structured SONET network has been described. However, the present invention is not limited to this, and the SONET device used in a SONET network that does not constitute a ring is similarly applied. Can be applied. Further, the present invention can be similarly applied to an SDH apparatus instead of the SONET apparatus.

(Supplementary note 1) An SDH / SONET device constituting an SDH / SONET network capable of setting a new transmission line across a plurality of SDH / SONET apparatuses and deleting an existing transmission line as a transmission line update,
Transmission path update information extracting means for extracting transmission path update information that is information relating to transmission path update from the received main signal;
Transmission line update means for changing the line setting based on the transmission line update information extracted by the transmission line update information extraction means;
An SDH / SONET device characterized by comprising:

(Appendix 2) Accepts a transmission path update instruction from the user, changes the line setting in the local apparatus based on the received transmission path update instruction, and generates transmission path update information. The SDH / SONET apparatus according to appendix 1, further comprising transmission path update information generation means for inserting the main signal.

(Supplementary Note 3) The transmission path update means determines whether the transmission path update information extracted by the transmission path update information extraction means is addressed to the own apparatus, and the transmission path update information is addressed to the own apparatus. If it is determined, the line setting is changed with the own device as the end point of the transmission path based on the transmission path update information. If it is determined that the transmission path update information is not addressed to the own apparatus, the data passes through the own apparatus. 2. The SDH / SONET device according to appendix 1, wherein setting change is performed on the line to be performed.

(Supplementary note 4) The transmission path update means, when it is determined that the transmission path update information is addressed to the own apparatus, the result of changing the line setting with the own apparatus as the end point of the transmission path based on the transmission path update information The SDH / SONET device according to appendix 3, wherein the transmission path update information is changed and notified.

(Supplementary note 5) The SDH / SONET apparatus according to supplementary note 1, wherein the transmission path update information extraction unit extracts transmission path update information inserted in a section overhead or a path overhead.

(Supplementary Note 6) The transmission path update information extracted by the transmission path update information extraction unit is transmission path setting information for a transmission path to be newly set,
The SDH / SONET apparatus according to any one of appendices 1 to 5, wherein the transmission path update unit performs line connection based on transmission path setting information extracted by the transmission path update information extraction unit. .

(Supplementary note 7) The transmission path update information extracted by the transmission path update information extraction unit is transmission path deletion information for deleting an existing transmission path,
The SDH / SONET apparatus according to any one of appendices 1 to 5, wherein the transmission path update means performs line deletion based on transmission path deletion information extracted by the transmission path update information extraction means. .

(Supplementary Note 8) When the transmission path setting information is addressed to the own apparatus and the channel setting of the channel that has received the transmission path setting information has been set, the transmission path update means deletes the channel setting and sets the transmission path. The SDH / SONET device according to appendix 6, wherein line connection is performed based on the information.

(Supplementary note 9) The SDH / SONET apparatus according to supplementary note 6, wherein the transmission path updating means simultaneously connects lines in the opposite direction using a UNEQ signal.

(Supplementary note 10) Line setting update of an SDH / SONET apparatus constituting an SDH / SONET network capable of setting a new transmission path across a plurality of SDH / SONET apparatuses and deleting an existing transmission path as a transmission path update A method,
A transmission path update information extraction step for extracting transmission path update information that is information related to transmission path update from the received main signal;
A transmission line update step for changing the line setting based on the transmission line update information extracted by the transmission line update information extraction step;
A line setting update method characterized by comprising:

  As described above, the SDH / SONET apparatus and the line setting update method thereof according to the present invention are useful for an SDH / SONET network, and particularly suitable for a large-scale SDH / SONET network in which the burden of line management by the network administrator is large. ing.

It is a functional block diagram which shows the structure of the SONET apparatus which concerns on a present Example. It is a figure which shows the data structure of transmission line update information. It is a figure which shows the detail of transmission-line update information. It is explanatory drawing for demonstrating operation | movement of an origin node. It is explanatory drawing for demonstrating operation | movement of an end point node. It is explanatory drawing for demonstrating operation | movement of an intermediate node. It is a flowchart (starting node) which shows the process sequence of the transmission line setting process by the SONET apparatus which concerns on a present Example. It is a flowchart (end point node) which shows the process sequence of the transmission line setting process by the SONET apparatus which concerns on a present Example. It is a flowchart (intermediate node) which shows the process sequence of the transmission line setting process by the SONET apparatus which concerns on a present Example. It is a flowchart (1) of UNEQ. It is a flowchart (2) of UNEQ. It is a flowchart (3) of UNEQ. It is explanatory drawing for demonstrating operation | movement when the line setting has already been performed in the end point node. It is a figure (1) which shows the example of an update of a transmission line. It is a figure (2) which shows the example of an update of a transmission line. It is a figure (3) which shows the example of an update of a transmission line. It is FIG. (4) which shows the example of an update of a transmission line.

Explanation of symbols

100 SONET devices 110, 110-1 to 110-n Transmission path update information extraction section 120 Reception side update information processing sections 130, 130-1 to 130-n Transmission path update information insertion section 140 Line connection section (cross-connect section)
150 Control unit 151 Line database 152 Cross-connect search unit 153 Cross-connect control unit 154 Transmission path update information generation unit 155 Command processing unit 156 Transmission path update information processing unit 200 Transmission path update information

Claims (5)

An SDH / SONET device that constitutes an SDH / SONET network capable of setting a new transmission path across a plurality of SDH / SONET apparatuses and deleting an existing transmission path as a transmission path update,
Transmission path update information extracting means for extracting transmission path update information that is information relating to transmission path update from the received main signal;
Transmission line update means for changing the line setting based on the transmission line update information extracted by the transmission line update information extraction means;
An SDH / SONET device characterized by comprising:   Receives a transmission path update instruction from the user, changes the line settings within the local apparatus based on the received transmission path update instruction, and generates transmission path update information and inserts it into the main signal The SDH / SONET apparatus according to claim 1, further comprising transmission path update information generation means for performing the transmission path update information generation.   The transmission path update means determines whether the transmission path update information extracted by the transmission path update information extraction means is addressed to the own apparatus, and determines that the transmission path update information is addressed to the own apparatus. Changes the line setting based on the transmission path update information with the own apparatus as the end point of the transmission path, and if it is determined that the transmission path update information is not addressed to the own apparatus, 2. The SDH / SONET apparatus according to claim 1, wherein setting is changed. The transmission path update information extracted by the transmission path update information extraction means is transmission path setting information for a transmission path to be newly set,
4. The SDH / SONET apparatus according to claim 1, 2 or 3, wherein the transmission path update means performs line connection based on transmission path setting information extracted by the transmission path update information extraction means. A line setting update method for an SDH / SONET apparatus that constitutes an SDH / SONET network capable of setting a new transmission path across a plurality of SDH / SONET apparatuses and deleting an existing transmission path as a transmission path update. ,
A transmission path update information extraction step for extracting transmission path update information that is information related to transmission path update from the received main signal;
A transmission line update step for changing the line setting based on the transmission line update information extracted by the transmission line update information extraction step;
A line setting update method characterized by comprising:

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