KR100553799B1 - Virtual Path/Channel connection consistency management method for Asychronous Transfer Mode Network - Google Patents

Abstract

The present invention recognizes the generation, deletion, and modification of the virtual path / channel subnetwork made by the lower subnetwork management system in the network management system, thereby realizing trail information stored in the network management system and the subnetwork management system. The present invention relates to a virtual path / channel connection currentization method in an asynchronous transmission mode high-speed communication network that allows the virtual path information and the virtual channel information stored in the management system and the sub-network management system to match.

In the network management system to which the multiple network management systems are connected, the partial network connection information is collected from all the sub network management systems on a port basis, and the sub network connection information stored in the connection information database table is called on a per port basis. If the subnetwork connection information from the management system and the subnetwork connection information from the connection information database table are not matched, the corresponding subnetwork connection information is stored in a temporary database table, and then the subnetwork connection information stored in the temporary database table. By using the matching information of the sub-network connection stored in the connection information database with the sub-network connection information from the sub-network management system characterized in that the virtual path connection information and the virtual channel connection information included in the sub-network connection information do.

The present invention can overcome the inconsistency of the connection between the sub-network management system and the network management system, thereby stably operating the network management system and the sub-network management system, and facilitate the current operation of the high-speed communication network service management system. In this way, the network management system and the service management system can be efficiently operated.

Description

Virtual Path / Channel Connection Consistency Management Method for Asychronous Transfer Mode Network}

1 is a diagram illustrating a virtual path / channel trail and a virtual path / channel subnetwork connection.

2 is a virtual path / channel trail type diagram.

Figure 3 is a block diagram of a virtual path / channel connection device in a conventional asynchronous transmission mode high-speed communication network.

Figure 4 is a block diagram of a virtual path / channel connection device in an asynchronous transmission mode ultra-high speed communication network according to an embodiment of the present invention.

5 to 9 are flowcharts for explaining a virtual path / channel connection actualization method in an asynchronous transmission mode high-speed communication network according to an embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

10, 100: part network management system 20,200: high speed network management system

21, 220: Trail module 22: Trail transmission endpoint module

23: trail receiving endpoint module 24: connection path module

210: current module 30: network service system

300: connection information database table 400: temporary database table

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for realizing virtual path / channel connection in an asynchronous transmission mode ultra high speed network. More specifically, the present invention relates to an asynchronous transmission mode (hereinafter, referred to as ATM: Asynchronous Teansfer Mode). A method for presenting an asynchronous transmission mode virtual path / channel, which is a fixed access circuit (PVC) connection of a layer network in a high-speed communication network.

As shown in FIG. 1, the ATM high speed communication network is composed of a virtual path (VP) network and a virtual channel (VC) network serving as a client of the virtual path layer network. The path layer network and the virtual channel layer network have a client / server relationship. For frame relay interworking, the virtual channel layer network has a frame relay interworking point in the network.

Each layer network consists of several subnetworks, and each subnetwork is connected by a link. Therefore, one end-to-end connection of each hierarchical network unit consists of several connections of partial network units. In this case, the connection of the hierarchical network unit is called a trail, and the connection of the partial network unit is called a subnetwork connection (SNC).

As illustrated in FIG. 2, the trail may be divided into a virtual path trail (VP Trail) generated in the virtual path / channel layer network and a virtual channel trail (VC Trail) generated in the virtual channel layer network, separately from the layer network. . The virtual path trail is an internal trail that ends in the network again, an end-to-end trail that terminates at the network end, and one end at the network end and one end at the inside of the network. It can be divided into three types: uniLink Trail.

The frame relay interworking connection is made in the virtual channel layer network and is thus represented as a virtual channel trail. Trails of a virtual channel layer network may be divided into two types, a pure virtual channel trail and a frame interlocking trail, with respect to frame relay interworking.

Hereinafter, the configuration and operation of a virtual path / channel connection apparatus in a conventional asynchronous transmission mode high speed communication network will be described with reference to FIG. 3.

As shown in FIG. 3, the virtual path / channel connection device in the conventional asynchronous transmission mode high speed communication network includes a plurality of sub network management systems 10 connected to the high speed network management system 20 corresponding to the connection portion of the network management system. The high speed network management system 20 is connected to a communication service session management system / help desk 30 among network service systems.

Here, the partial network management system 10 manages the partial network connection information, performs the creation, deletion, modification, etc. for the partial network connection, and the ultra-high speed network management system 20 corresponding to the connection management portion of the network management system 20 ) Manages end-to-end connection (trail) information and creates, modifies, and deletes trails.In this case, it identifies which subnetwork is routed to the subnetwork management system to create, change, Request deletion.

The ultra-high speed network management system 20 includes: a trail module 21 for generating trail information when a trail generation request is made, requesting an operation of a lower sub network connection of a corresponding trail from the lower sub network management system, and receiving and storing the result; It shows both disadvantages of trail, which is end-to-end connection, and has port, virtual path / channel identifier (VPI), and corresponding trail identifier information at both ends of the trail. Trail transmit / receive endpoint modules 22 and 23 that perform virtual path / channel identifier assignment and return operations, and a connection path module 24 that performs routing of the trail module 21.

In the conventional asynchronous transmission mode ultra-high speed communication network configured as described above, the virtual path / channel connection device establishes, deletes, or changes a connection for a specific trail from the network service system 30 to the high speed network management system 20 during the operation of the high speed information communication network. And the like, when the super fast network management system 20 is instructed to establish a connection for a specific trail from the network service system 30, the trail module 21 and the trail transmission endpoint module 22 and the trail reception endpoint After generating the information on the trail by the operation of the module 23 and stores it in the trail information storage unit (not shown), if the deletion, change to a specific trail from the network service system 30 is commanded, Deletes or changes the information of the relevant trail stored in the trail information storage.

Then, the ultra-high speed network management system 20 is a partial network management system constituting a connection setting / deletion / changed trail requesting the connection setting, deletion, change for the sub network to the sub network management system 10 Allows information about the virtual path / channel subnetwork to be changed.

In the conventional path / channel connection device in the conventional asynchronous transmission mode high speed communication network, the high speed device management apparatus (network management system) 20 always transmits information to the lower network management system 10 so that the subnetwork management system 10 It allows you to create, delete, and change information about the subnetwork connections stored in the system.

Therefore, in this structure, the network connection of the virtual path / channel part that is created, deleted, and changed in the partial network management system by itself rather than through the high speed network management system (network management system) 20 is part of the higher speed network management system. Since network changes are not known, there may be a mismatch between a virtual path / channel trail that is a parent connection of that partial network connection.

Accordingly, the present invention has been made to solve the above-mentioned problems, and the network management system recognizes the creation, deletion, and change of the virtual path / channel subnetwork made by the lower subnetwork management system. Virtual path / channel connection in the asynchronous transmission mode ultra-high speed communication network which enables the trail information stored in the subnetwork management system to match the virtual path information and the virtual channel information stored in the network management system and the subnetwork management system. The aim is to provide a method of speech.

In order to achieve the above object, a virtual path / channel connection realization method in an asynchronous transmission mode ultra-high speed communication network according to a preferred embodiment of the present invention provides a method for creating, deleting, and modifying a subnetwork connection while managing the subnetwork connection information. A plurality of subnetwork management systems are connected to each other, and a connection information database table storing trail information, subnetwork connection information, and trail transmission / reception endpoint information is configured to manage trail information for all subnetwork management systems and to generate and change trails. This applies to network management systems that perform operations to delete or delete data.

For this application, the present invention provides a first process of collecting partial network connection information from all subnetwork management systems on a port basis, and a second process of calling partial network connection information stored in the connection information database table on a port basis. A third step of comparing the subnetwork connection information from the subnetwork management system with the subnetwork connection information from the connection information database table and storing the subnetwork connection information in a temporary database table if there is a mismatch; and in the temporary database table. By using the stored subnetwork connection information, the subnetwork connection information stored in the connection information database is matched with the subnetwork connection information from the subnetwork management system, and the virtual path connection information and the virtual channel connection information included in the subnetwork connection information are displayed. A fourth process of making it current is provided.

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

FIG. 4 is a block diagram of a system to which a virtual path / channel connection currentization method is applied in an asynchronous transmission mode ultra high speed communication network according to an embodiment of the present invention. The same reference numerals as in the description and the detailed description thereof will be omitted.

According to FIG. 4, in the system according to the present invention, a partial network management system 100 which manages partial network connection information and performs creation, deletion, and modification of the partial network connection is connected to the high speed network management system 200. , The high speed network management system 200 includes a connection information database table 300 storing trail information, partial network connection information, trail transmission / reception endpoint information, etc., and connection information of the network management system 100 with the connection information of the network management system. The temporary database table 400 is configured to store the contents of the changed connection information by comparing the information.

The trail information stored in the connection information database table 300 includes a trail identifier, a client link identifier, traffic information, trail state information, and the like. The partial network connection information includes a partial network connection identifier, a higher trail identifier, a partial network connection path, Sub-network connection status information and the like, and the trail transmit and receive end point information includes the trail transmit and receive endpoint identifier (this includes the port and virtual path / channel identifier where the corresponding trail transmit and receive endpoint is located), trail identifier, trail transmit and receive endpoint status information.

The temporary database table 400 stores a partial network connection identifier, partial network connection endpoint information, partial network connection bandwidth, and the like.

On the other hand, the ultra-high speed network management system 200 is configured with the currentization module 210 and the trail module 21, the currentization module 210 is a virtual path / channel portion collected from the partial network management system 100 The network connection information is compared with the virtual path / channel partial network connection information stored in the connection information database table 300 to store partial network connection information that is not matched in the temporary database table 400.

For reference, the currentization module 210 performs the operation related to the currentization in units of physical ports, and after the currentization of the virtual path / channel connection, proceeds with the currentization of the virtual channel connection. The current module 210 calls all partial network connections managed by all partial network management systems 100 managed by the partial network management system 100 in units of physical ports.

The current module 210 collects the subnetwork connection, and compares the subnetwork connection with the subnetwork connection stored in the connection information database table 300. The case of changing the path and the bandwidth is identified and stored in the temporary database table 400.

Then, the current module 210 compares all connections of the network management system and the partial network management system, and based on the information stored in the temporary database table 400, the connection information with the partial network management system 100 The operation of matching the connection information is performed in order of deleting the connection information stored in the connection information database table 300, changing the path and bandwidth of the connection, and generating the connection information.

Hereinafter, a virtual path / channel connection actualization method in an asynchronous transmission mode ultra high speed communication network according to an embodiment of the present invention will be described in detail with reference to FIGS. 5 to 9.

As shown in FIG. 5, the current module 210 of the high speed network management system 200 obtains virtual path / channel subnetwork connection information in units of ports in all the subnetwork management systems 100 ( In operation 502, the connection information database table 300 also extracts virtual path / channel subnetwork connection information in units of ports (502).

Then, using the partial network connection information obtained from the sub-network management system 100 and the sub-network connection information collected from the connection information database table 300 exists in the sub-network management system 100, but the connection information database table 300 In step 504, it is determined whether there is a partial network connection information that does not exist.

That is, in this case, since several ports are configured in one subnetwork, and one port has several subnetwork connections starting from the corresponding port, the subnetwork connection information of a port unit has a specific port as a starting point. All information related to each subnetwork connection is included. The present invention is to check the state of the network connection to the port to be measured by using this characteristic, in step 504 for the particular port exists in the network management system 100, but the connection information database table ( In 300, it is to check the network connection that does not exist.

On the other hand, as a result of the determination, for the partial network connection information existing simultaneously in the subnetwork management system 100 and the connection information database table 300 (NO in step 504), the localization module 210 determines that the subnetwork exists. The subnetwork connection information of the management system 100 is compared with the subnetwork connection information of the connection information database table 300. In this case, the subnetwork connection identifier, the subnetwork connection endpoint information, and the subnetwork connection bandwidth, which are the details of the connection information, are used. The comparison is then made to determine whether or not the same (507).

As a result, if it is determined that both the connection information is the same (YES in step 507), there is a partial network connection that is present in the connection information database table 300, but not in the sub-network management system 100. In step 509, the partial network connection information stored in the connection information database table 300 is deleted from the partial network management system 100, and the partial network management system 100 is connected to the corresponding partial network connection. This is the case when no information is stored.

As a result of the check, if there is no partial network connection information in the connection information database table 300 but not in the sub network management system 100 (NO in step 509), it is checked whether another port to check the partial network connection exists. Next (512), if the port exists (Yes at 512), return to the initial stage and exit if no port exists (No at 512).

However, unlike the case described above, the partial network connection information, which is not stored in the connection information database table 300, exists in the partial network connection information from the sub network management system 100 in the determination result in step 504 ( In step 504), the determination result in step 507 is not equal to the sub-network connection information from the sub-network management system 100 and the sub-network connection information stored in the connection information database table 300 (in step 507). No), if there is partial network connection information that exists in the connection information database table 300 but does not exist in the partial network management system 100 (YES in step 509), an identification code is assigned to distinguish each state. The partial network connection information is stored in the temporary database table 400 (506).

Then, the current module 210 of the ultra-high speed network management apparatus 200 is stored in the connection information database table 300 using the partial network connection information stored in the temporary database table 400, but the partial network management system. In step 100, the subnetwork connection information that is not stored in the subnetwork management system is checked and the trail for the upper virtual path / channel for the subnetwork connection information in the connection information database table 300 is stored. After extracting (601), the sub-network connection of the trail is searched (602), it is determined whether there is a sub-network connection of the trail (603).

As a result of the check, if there is a sub-network connection to the corresponding trail (YES at 603), the currentization module 210 transmits the link and the phase link through the trail module 21 through the corresponding virtual path / channel trail, The bandwidth of the network endpoint and the virtual path / channel identifier (VPI / VCI) are returned (604).

Then, the current module 210 returns the virtual / channel identifier and bandwidth of the trailing / receiving point of the trail through the trail module 21, and transmits the corresponding subnetwork connection information in the connection information database table 300. After deleting (605), the process proceeds to step 603 to determine whether there is a lower subnetwork existing in the trail for the virtual path / channel.

On the other hand, if the sub-network existing in the trail for the virtual path / channel does not exist or all the sub-network connection information for the existing sub-network is deleted, according to the determination result (No) in step 603 step 606 In operation 606, the endpoint and trail information of the corresponding virtual path / channel trail stored in the connection information database table 300 are deleted.

Subsequently, the actualization module 210 of the ultra-high speed network management system 200 realizes the partial network connection information in which the connection path or bandwidth is changed in the partial network management system 100.

That is, if the trail path (NO) in step 507 of FIG. 5 described above is changed, the virtual path / channel trail is extracted using the partial network connection information stored in the temporary database table 400, and then the corresponding path is extracted. The network connection information according to the subnetwork path of the trail is checked (701).

The current module 210 returns a virtual path / channel identifier and bandwidth of a link and a phase link on a corresponding trail path stored in the connection information database table 300 (702), and the endpoint of a trail to be changed is a transmission point. Determine whether it is a receiving point (703), if it is determined to be a transmitting point (Yes at 704), specify the change endpoint as the transmitting point and return the bandwidth of the virtual path / channel of the transmitting point (705); If it is determined that the trailing end point of the resultant trail is not the transmission point, that is, if the trailing end point is the receiving point (NO in 704), the change endpoint is designated as the receiving point and the virtual path / channel identifier and bandwidth of the receiving point are returned (706).

Then, the currentization module 210 is based on the subnetwork connection information stored in the temporary database table 400, through the trail module 21 of the link and the phase link on the new path for the subnetwork connection. The virtual path / channel identifier and bandwidth are allocated (707).

It is determined whether the change endpoint is a transmission point, a reception point, or a reception point (708), and it is determined whether the transmission point is a transmission point (709). If the result of the determination is that the change endpoint is a transmission point (YES in step 709), the trail module 21 is determined. Allocates a virtual path / channel identifier and bandwidth of a transmission point of a new subnetwork connection through the terminal 710, and if the changed endpoint is a reception point instead of a transmission point (NO in step 709), the virtual of the reception point of the new subnetwork connection is determined. The path / channel identifier and bandwidth are allocated (711).

Subsequently, the present module 210 determines whether the attributes of the trail have been changed by changing the partial network connection path (712). If the attributes of the trail have been changed (YES at 712), the corresponding module is provided through the trail module 21. The trail type is changed, a new trail identifier is generated (713), and the partial network connection information corresponding to trail information having the new trail identifier is stored in the connection information database table 300 (714).

In another case, if the trail path (NO) in step 507 of FIG. 5 described above is changed, the virtual path / channel trail is extracted using the partial network connection information stored in the temporary database table 400. Next, in operation 801, the bandwidth of the subnetwork management system 100 of the subnetwork connection mapped to the virtual path / channel trail is checked.

Then, the present apparatus 210 adjusts the bandwidth of the link and the phase link on the path of the virtual path / channel trail based on the subnetwork connection information from the subnetwork management system 100 (802). After adjusting the bandwidth of the transmission / reception point of the virtual path / channel trail (803), when the lower subnetwork information of the trail is changed, the bandwidth information of the trail is changed and stored in the connection information database table 300 (804). ).

In steps 802 and 803, the current module 210 recalculates the effective bandwidth of the connection according to the bandwidth through the trail module 21, and then transmits and receives a link and a phase link on the path of the corresponding subnetwork connection (trail). Change the bandwidth of the point.

After changing the path and bandwidth of the partial network connection, the current module 210 of the ultra-high speed network management system 200 manages the partial network through the trail module 21 using the data stored in the temporary database module 400. The system 100 generates a trail according to the newly created subnetwork connection information.

The operation of generating the trail determines whether the subnetwork connection is terminated in the subnetwork or whether the subnetwork is connected to another subnetwork connection in step 901, and determines in step 902. If it is determined that the connection with the subnetwork connection is confirmed (YES in step 902), the entire connection path is extracted by combining all the subsequent subnetwork connections (903), and if the connection with the subnetwork connection is not confirmed (step 903). No) check the termination of the entire connection to determine the trail type and generate a trail identifier (904).

Then, the current module 210 generates trail information corresponding to the subnetwork connection information through the trail module 21, generates a trail endpoint (905), and then sub-networks of the corresponding virtual path / channel trail. The virtual path / channel identifier and bandwidth of the link and the phase link on the connection path are allocated (906), and the virtual path / channel identifier and bandwidth of the transmission / reception point of the trail are allocated (907).

According to the present invention as described above, it can be applied to the network management system of the high-speed communication network to provide a stable virtual path connection and virtual channel connection service.

As a result, the network provider can provide a function of the connection asynchronous transmission mode network management system to overcome the inconsistency of the connection between the sub-network management system and the network management system, thereby stably operating the network management system and the sub network management system. It will be possible to facilitate the current operation of the high-speed communication network service management system to efficiently operate the network management system and the service management system.

On the other hand, the present invention is not limited to the above-described embodiment, but can be modified and modified within the scope not departing from the gist of the present invention, such modifications and changes should be regarded as belonging to the following claims. will be.

Claims (13)

A plurality of subnetwork management systems for creating, deleting, and modifying subnetwork connections are managed while managing the subnetwork connection information, and a connection information database table storing trail information, subnetwork connection information, and trail transmission / reception endpoint information is configured. In the virtual path / channel connection currentization method applied to the network management system that manages the trail information for all the sub-network management system and create, change, delete the trail, A first step of collecting partial network connection information from all subnetwork management systems on a port basis; A second step of calling partial network connection information stored in the connection information database table on a port basis; A third step of comparing the subnetwork connection information from the subnetwork management system with the subnetwork connection information from the connection information database table and storing the subnetwork connection information in a temporary database table if they do not match; Virtual network connection information included in the subnetwork connection information by matching the subnetwork connection information stored in the connection information database with the subnetwork connection information from the subnetwork management system using the subnetwork connection information stored in the temporary database table. A virtual path / channel connection actualization method in an asynchronous transmission mode high-speed communication network, characterized in that the fourth process to make the virtual channel connection information current. The method of claim 1, The subnetwork connection information includes a subnetwork connection identifier, a higher trail identifier, a subnetwork connection path, and a subnetwork connection status information. The method of claim 1, In the third process, Storing partial network connection information in the temporary database table; Subnetwork connection information deleted from the subnetwork management system; Sub-network connection information changed in the sub-network management system; Virtual path / channel connection actualization method in the asynchronous transmission mode high-speed communication network, characterized in that for storing divided by the connection information generated in the network management system. The method of claim 3, wherein In the asynchronous transmission mode ultra-high speed communication network, the connection information database table stored in the connection information database table but not stored in the connection management system is determined to be subnetwork connection information deleted from the network management system. Virtual path / channel connection currentization method. The method of claim 3, wherein Asynchronous transmission mode ultra-high speed, which is stored in the connection information database table and is also stored in the partial network management system, but determines the partial network connection information having different contents as the changed partial network connection information in the partial network management system. Virtual path / channel connection currentization method in communication network. The method of claim 3, wherein In the asynchronous transmission mode ultra-high speed communication network, the connection information database table, which is not stored in the connection information database, is stored in only the partial network management system. Virtual path / channel connection currentization method. The method of claim 1, wherein the fourth process Deleting the partial network connection information deleted by the partial network management system from the connection information database table; A second step of updating the subnetwork connection information stored in the connection information database table by reflecting the changed subnetwork connection information in the subnetwork management system; And a third step of newly storing the partial network connection information generated in the partial network management system in the connection information database table. Virtual path / channel connection actualization method in the asynchronous transmission mode high-speed communication network, characterized in that matching the sub-network connection information stored in the connection information database table and the sub-network connection information stored in the sub-network management system. The method of claim 7, wherein The first step is If the upper trail is found in the link information database table using the subnetwork connection information and then deleted from the subnetwork management system even if there is no other subnetwork connection of the corresponding trail, the link and the phase link through the corresponding trail and the network endpoint A method for presenting a virtual path / channel connection in an asynchronous transmission mode high speed communication network, comprising: returning jumbo and bandwidth, a virtual path / channel identifier, and deleting corresponding trail information from the connection information database table. The method of claim 7, wherein The second step is If the connection path information of the subnetwork connection information is different, the connection path information included in the conventional subnetwork connection information stored in the connection information database table is deleted, and the part included in the subnetwork connection information from the subnetwork management system. Storing network connection information in the connection information database table and performing currentization of the connection path; As the connection path is changed, a trail identifier is newly generated according to the changed trail type, the effective bandwidth of the connection is recalculated according to the changed bandwidth, and the bandwidth of the link, phase, and network endpoint in the path of the corresponding subnetwork connection is changed. Virtual path / channel connection actualization method in the asynchronous transmission mode ultra-high speed communication network, characterized in that the. The method of claim 9, Asynchronously characterized by deleting the connection information stored in the conventional connection information database table by returning the bandwidth and virtual path / channel identifier of the link and the phase link through which the conventional subnetwork connection passes, the network endpoint that is the transmission point or the reception point of the connection. Transmission mode Virtualization path / channel connection in the high speed communication network. The method of claim 9, A link and a phase link on a new path, a bandwidth of a network endpoint that is a transmission / reception point of a corresponding subnetwork connection, and a virtual channel identifier are allocated and stored in the connection information database table to perform the current path. Virtual path / channel connection currentization method in asynchronous transmission mode high speed communication network. The method of claim 7, wherein In the third step, a trail identifier and a trail type are designated using the subnetwork connection information from the subnetwork management system, matched with the subnetwork connection information, and the trail path is identified according to the path of the subnetwork connection. A virtual path / channel connection realization method in an asynchronous transmission mode high-speed communication network, characterized in that a trail is generated by assigning a link and a phase link, a network endpoint and a virtual path / channel identifier on a path of the path. The method of claim 7, wherein The second step is If the bandwidth information of the subnetwork connection information is different, the bandwidth of the link and phase links on the path of the corresponding virtual path / channel trail and the bandwidth of the transmission / reception point based on the subnetwork connection information collected from the subnetwork management system. And adjusting the bandwidth of the virtual path / channel trail to change the bandwidth of the virtual path / channel trail.

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