CN1323497C - Manual business arrangement of connection oriented in optical transmission network - Google Patents

Abstract

The invention relates to a connection-oriented manual service configuration method in an SDH optical transmission network. First, the network management platform provides the selection list of the source network element and the destination network element. The required set of single boards and available free time slots; after the user selects the occupied time slots, the network management station will provide the set of adjacent network elements that can reach the target network element; after the user selects adjacent network elements, if If the network element is not the destination network element and the network crosspoint network element, the direct connection selection column will be given. At this time, the user can choose the service direct connection mode, or configure the specific time slot of the network element according to the above method; select in turn Adjacent network elements, until the specific time slot of the configuration destination network element is occupied, the user determines the end of the configuration; then the network management platform checks the integrity and consistency of the data generated by the user configuration, and writes the data into the database if it meets the requirements , otherwise the data is invalid and the entire configuration process fails.

Description

Connection-Oriented Manual Service Configuration Method in Optical Transport Network

technical field

The present invention relates to a service configuration method of an SDH (Synehronous Digital Hierarchy, i.e. synchronous digital system) optical transmission network, more specifically, relates to a connection-oriented manual service configuration method in an SDH optical transmission network.

Background technique

At present, the SDH optical transmission network has been widely used in the field of communication. With the needs of the society and the advancement of the technical level, the bandwidth of the SDH optical transmission network is getting wider and wider, especially in the trunk optical cables. Most of them use 2.5G bit /s or even higher-speed SDH equipment, which makes the service configuration function of SDH optical transmission network more and more important.

Most of the existing domestic and foreign SDH equipment network management station systems have the management function of service configuration, and the methods can be divided into two categories:

1. Automatic service configuration function

With this function, SDH service configuration can be automatically configured from the source end to the destination end. The network elements passing through in the middle are automatically searched by the automatic service configuration function, and the bandwidth and occupation are allocated according to the requirements of the service configuration, and then the network elements are notified to do so. Take corresponding actions to ensure the smooth flow of business. The advantage of this method is that it is easy for the user to operate, but the disadvantage is that the found intermediate network element is completely realized by the automatic service configuration algorithm, and it is completely invisible to the user during the selection process. If there are multiple paths from the source NE to the destination NE, the user cannot control which path is selected. In the actual operation, it is found that because the automatic service configuration is provided by the algorithm, some services that can be configured, the algorithm can not be configured wrongly, and the configuration can be realized by manual methods. In addition, when modifying services in small batches, users need to control the passing network elements, which cannot be realized in the automatic configuration method, and manual configuration is required.

2. Manual business configuration function

Under this function, the user configures the network elements participating in the service one by one, and selects the relevant minimum service configuration unit of the relevant single board of each network element. After all network elements in the network are configured, the corresponding services can be communicated. The advantage of this method is that the service configuration is fully visible to the user, and it is convenient for the service configuration to be performed according to the user's requirements. The disadvantage is that the configuration process loses the flow direction information of each service, such as the source network element, intermediate network element, and destination network element, so that the service configuration is performed point by point, which is prone to errors. If only the source NE and intermediate NE are configured for some services, but the destination NE is not configured accordingly, the data will still be configured to the NEs other than the destination NE, so that the bandwidth of these NEs is occupied, resulting in A large amount of garbage data, so that when reconfiguring, the service configuration that could have been carried out was considered insufficient bandwidth and could not be configured.

Contents of the invention

In order to overcome the shortcomings of the existing SDH optical transmission network technology that automatic service configuration cannot achieve complete manual intervention, and wrong configuration conclusions may be drawn, as well as the shortcomings of manual configuration that loses service consistency, is prone to errors, complex configuration process, and slow speed The present invention provides a connection-oriented manual service configuration method in an SDH optical transmission network that not only maintains the consistency of service configuration, is completely transparent to users, but also has repeatability, high efficiency and easy operation.

The technical solution adopted by the present invention to solve the technical problem is: a connection-oriented manual service configuration method, the basic idea is: the service configuration takes the same type of service from the source network element to the destination network element as the configuration unit, and must be in accordance with Configure each network element in sequence from the source network element to the destination network element. The service configuration is oriented to the connection between network elements instead of the network element-oriented way of manual service configuration. All configuration details are visible to the user during the configuration process. All configurations can be selected by the user; during the configuration process, the network management platform reasonably screens the data required by the user, and only provides the data that meets the user's conditions to the user, so as to reduce the complexity of manual configuration and speed up the configuration; the user configuration is completed Finally, the network management platform checks the integrity and consistency of the configuration data, and writes the data that meets the inspection standards into the database, otherwise the data is invalid and the user must reconfigure; in this way, the modification of the configuration data is guaranteed to be either a complete modification or be Cancel.

The data generated by the above-mentioned connection-oriented manual service configuration process is managed in a manner similar to the "transaction" in the database: the data generated during the entire configuration process from the source network element to the destination network element is regarded as a "transaction", that is, the data must be Integrity means that all data from the source network element through the intermediate network element to the destination network element must be generated before the data can be considered valid and can be written into the database of the network management console. If the data of an intermediate point is lost or there is no one or more related configuration data of the destination network element for some reason, the whole batch of data is invalid, and the configuration must be performed from the source network element again. Using this data management method ensures that data modifications are either completely modified or cancelled. All these data modifications are based on "transactions". In a "transaction", you can do everything or nothing.

In order to ensure that the configuration process using the connection-oriented service configuration method is repeatable, that is, the configuration data or the service passing network elements will not be different depending on the operator. In the present invention, when the network management station provides multiple optional paths for the user to choose, each path will indicate its characteristics: for passing through a certain node to make the final configuration pass through the minimum number of nodes, then the node description place indicates the minimum number of nodes; If the physical path of the final configuration is the shortest through a certain node, then the shortest physical path is indicated at the node description; if the final configuration passes through a certain node to make the final configuration pass the shortest topology ring, it is indicated that the topology ring is the least. At the same time, each network element indicates the order of these three indicators (such as the shortest physical path, the second least topology ring, and the third least number of nodes). In this way, once the general principle of service configuration of a network is determined, it is possible to select which intermediate node to pass through according to the characteristics marked at the node, and it does not change with the change of the operator. At the same time, the business configuration is also operated by professionals, and it is not recommended for anyone to operate it.

The core algorithm is:

In the first step, the network management station queries the network topology database, queries the network elements with free bandwidth, and fills all the results into the network element selection column. If all the bandwidth of the network element is occupied, mark this network element as busy, and click When querying the idle network element for the second time, this network element will not be given again;

In the second step, after the network element is selected (at the same time, the user selects the type and quantity of the service to be configured), query the network element database to obtain the set of single boards that can provide the type of service required by the user, and give the serial number of the free time slot of the single board , when the user selects the time slot to be occupied, the occupied time slot is marked as busy, and the time slot marked as busy will not be listed when querying the free time slot in the network element database next time;

In the third step, after the user selects the occupied time slot, the network management station queries the network topology database again to obtain the set of adjacent network elements of the source network element that can reach the destination network element, and the user selects the adjacent network element Afterwards, the network management console queries the network topology database again. If the network element is not a destination network element or a network crosspoint network element, a straight-through connection selection column is given, and the user can select the service direct connection mode (the user does not need to carry out a specific time connection at this time). Slot selection, the network management station occupies the network element bandwidth in sequence), and the specific time slot of the network element can also be configured according to the aforementioned method;

The fourth step is to select adjacent network elements in turn according to the above sequence until the specific time slot occupancy of the destination network element is configured, and then the user confirms that the configuration is completed;

In the fifth step, the network management platform checks the integrity and consistency of the data configured by the user to check whether the data conforms to the "transaction" data management method, that is, to ensure that the data modification is either completely modified or canceled; all these data modifications are based on Of a "transaction"; in a "transaction" all or nothing can be done.

By using the method of the present invention, compared with the prior art, the service configuration process is completely visible to the user, and the user has more flexibility and initiative in configuring the service. The integrity and consistency of the business are guaranteed, avoiding omissions and errors caused by humans in the configuration process; the network management platform conducts reasonable screening and appropriate prompts when users make choices, giving users a guiding role and greatly reducing manual operations. The complexity of business configuration improves the speed and repeatability of manual business configuration.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail, in the accompanying drawing:

Fig. 1 is a schematic flow chart of an embodiment of a connection-oriented manual service configuration method;

Fig. 2 is a flow chart of some core algorithms of the network management station in the connection-oriented manual service configuration method.

Detailed ways

As shown in Figure 1, it is a flow chart of the connection-oriented manual service configuration method, and its steps are described in detail below:

Step 101, at first, the initial configuration interface of connection-oriented manual service configuration is provided by the network management platform, including the selection column of source network element and destination network element (only possible network elements are given);

Step 102, the user selects the source network element, the destination network element, and the type and quantity of services to be configured;

Step 103, after selection, the name and number of the single board that can meet the configuration requirements are provided by the network management platform, and the idle time slot type, the number of time slots and the serial number of the optional single board are provided;

Step 104, the user selects a single board and the sequence number of the time slot of the single board that can meet the service requirements; if the configuration is completed, it is determined that the configuration is completed.

Step 105, the network management platform judges whether to receive the configuration end information manually input by the user, if received then thinks that configuration ends, enters step 111, otherwise executes step 106;

Step 106, after selection, the network management platform provides a set of adjacent network elements that can reach the destination network element, if this step is run for the first time, then provide the adjacent network elements that can reach the destination in the network topology structure of the source network element The network element selection column of the network element, if this step is not executed for the first time, then the network element selection column adjacent to an intermediate network element in the network topology structure that can reach the destination network element is given;

Step 107, the user selects a network element from the above network element set as an intermediate network element or a destination network element;

Step 108, judging whether the selected network element is a destination network element or a cross network element, if yes, return to step 103, otherwise enter step 109;

Step 109, if it is judged that the network element is not a destination network element or a crossover network element, then the network management platform provides a direct connection selection column, at this time, the user can select the service direct connection mode without selecting a specific time slot, and the network management platform Occupy the network element bandwidth sequentially. This step judges whether the user chooses the direct mode. If yes, execute step 110. Otherwise, return to step 103, indicating that the user has selected the normal mode. The next intermediate network element is configured;

Step 110, select the straight-through method, that is, the service enters from the optical entrance of this network element, directly exits from the only optical exit, occupies its available bandwidth resources in sequence, and then returns to step 106. This method is suitable for network topology In the case where there is no intersection between rings or between rings and chains;

Step 111: Configure each intermediate network element in the source network element and the destination network element sequentially according to the above-mentioned cyclic steps, until the configuration is completed, then enter this step, and perform integrity and consistency on the data generated by the connection-oriented manual service configuration process Check to see whether it meets the requirements for transaction operations, if so, enter step 112, write data into the database, and complete the entire process, otherwise enter step 113, indicating that the data is invalid, and the entire configuration process fails.

In the above step 111, the data generated by the connection-oriented manual service configuration process is managed in a manner similar to the "transaction" in the database: the data generated during the entire configuration process from the source network element to the destination network element is regarded as a "transaction" ", that is, the data must be complete, including all the data generated from the source network element through the intermediate network element to the destination network element, so that these data can be considered valid and can be written into the database of the network management station. If the data of an intermediate point is lost or there is no one or more related configuration data of the destination network element for some reason, the whole batch of data is invalid, and the configuration must be performed from the source network element again.

Below in conjunction with Fig. 2 illustrate the flow process of the network management station part core algorithm in the connection-oriented manual service configuration method of the present invention:

Step 201, after the configuration starts, the network management platform queries the network topology database;

Step 202, judging whether there are network elements that have not been queried, if yes, execute step 203, otherwise execute step 206;

Step 203, if there is a network element that has not been queried, then take out a network element;

Step 204, judging whether the network element taken out has idle bandwidth, if yes, it means that a network element with idle bandwidth has been inquired, and now execute step 205, otherwise directly return to step 203, if all bandwidths of the taken network element are If it is occupied, mark this network element as busy, and will not give this network element again when querying idle network elements next time;

Step 205, fill in the above-mentioned network elements that have not been queried and have free bandwidth into the network element selection column, that is, put them into the destination network element selection column, then return to step 202, repeat the above steps 202-205, until there is no unqueried network element. When the network element has been queried, it means that all possible results have been filled in the network element selection column, and now enter step 206;

Step 206, the user selects the source network element, the destination network element, and the service type and quantity to be configured;

Step 207, the network management station queries the network element database to obtain a set of single boards that can provide the type of service required by the user;

Step 208, judging whether the source network element still has a single board that can provide this service type, where the service type refers to the service type specified by the user to be configured, if yes, then perform step 209, and if not, perform step 211;

Step 209, judging whether there is a free time slot, if yes, then execute step 210, otherwise return to step 208;

Step 210: By repeating the above-mentioned steps 208-210, obtain a set of single boards that can provide the type of service required by the user, and give the serial numbers of the free time slots of the single boards, and put the single boards that meet the requirements and their free time slot serial numbers into the selection column , and then return to step 208;

Step 211, the user selects the single board and the time slot number to be configured, and when the user selects the occupied time slot, the time slot is marked as busy, and will not be listed when the free time slot in the network element database is queried next time;

Step 212, the network management station queries the network topology database again;

Step 213, put the network element numbers that can reach the destination network element and are adjacent to the source network element into the column of network elements to be selected in the next step, so as to obtain a set of network elements that can reach the destination network element and are adjacent to the source network element , to be selected by the user, that is, to select the intermediate network elements from the source network element to the destination network element in turn;

Step 214, judging whether there are network elements that meet the conditions, if there is, then return to step 213, if not, then enter step 215 to end the process, after the user selects the adjacent network element, the network management platform queries the network topology database again, if this If the network element is not the destination network element and the network cross point network element, the direct connection selection column is given. At this time, the user can choose the service direct connection mode, or configure the specific time slot of the network element according to the aforementioned method. Finally, the network management station Check the integrity and consistency of the data configured by the user, and check whether the data conforms to the "transactional" data management method, that is, to ensure that the data modification is either a complete modification or cancelled. If it meets the requirements, it will be written into the database, otherwise it will be invalid.

The present invention is not limited to the illustrations and descriptions in the above preferred embodiments. Those skilled in the art will consider many modifications, replacements and changes without departing from the spirit and scope of the present invention defined by the claims. , alternatives and equivalents.

Claims (6)

1, connection-oriented manual business collocation method in a kind of SDH optical transport network is characterized in that, may further comprise the steps:

(1), the webmaster platform provides connection-oriented manual business configuration initial configuration interface, comprises the selection row of source network element and purpose network element, select for the user;

(2), the user selects source network element, purpose network element, and the type of service and the quantity of desire configuration;

(3), the webmaster platform provides the veneer name and the numbering that can satisfy configuration requirement, and provides idle time slot type, timeslot number and sequence number thereof on alternative veneer;

(4), the user selects the veneer of source network element and purpose network element and can satisfy the sequence number of the veneer time slot of business demand;

(5), the webmaster platform provides the adjacent network element set of the network element that can achieve the goal, the user selects a network element as intermediate NE or purpose network element from the said network element set;

(6), judge that whether selected network element is the purpose network element or the network element that intersects, if then got back to for (3) step, otherwise select professional straight-through connected mode or the concrete time slot of network element be configured by the user;

(7), repeat described (3)-(6) step, select successively by the source network element to the adjacent intermediate NE the purpose network element, behind the concrete Time Slot Occupancy of source of configuration network element and purpose network element, determine the configuration end by the user;

(8), the webmaster platform carries out integrality and consistency check to the data that the user disposes generation, as meets the requirements and then data write database, do not represent that data are invalid, whole layoutprocedure failure.

2, method according to claim 1 is characterized in that, in (1):

Webmaster platform requester network topological database judges whether the network element of not inquired about;

If the network element of not inquired about is arranged, then therefrom take out a network element;

Judge again whether the network element taken out has idle bandwidth, if, then will above-mentionedly inquire about and be had the network element of idle bandwidth to insert the purpose network element and select to be listed as, promptly put into the selection of purpose network element and be listed as;

Repeat above-mentioned steps, up to all not being inquired about and having the network element of idle bandwidth all to insert in the purpose network element selection row.

3, method according to claim 1 is characterized in that, in (3):

Webmaster platform inquiry NE database judges whether the source network element can provide the veneer of this type of service in addition;

If have then judge again whether this veneer has idle time slot;

If this veneer has idle time slot, then this veneer and idle time slot sequence number thereof are put into the selection row;

Repeat above-mentioned steps, all put into described selection row until the veneer that all can be provided the user's request type of service.

4, method according to claim 1 is characterized in that, in (6):

If through judging that selected network element is not the purpose network element and the network element that intersects, and then provides the straight-through selectionbar that connects by the webmaster platform;

If the user selects professional straight-through connected mode, the then professional light inlet of network element from then on enters, and directly goes out from unique light-emitting window, takies its available bandwidth resources in order, gets back to for (5) step then;

If with selecting common mode, then the order by (3)-(5) step is configured the next intermediate NE in source network element and the purpose network element successively.

5, method according to claim 1, it is characterized in that, in (8): after the webmaster platform receives that configuration that the user imports finishes to determine information, the webmaster platform carries out integrality and consistency check to the data that the user disposes generation, must be to begin all to generate up to all data of purpose network element, can think that just these data are satisfactory valid data through intermediate NE from the source network element; If lost the data of certain intermediate point wherein or caused certain or a plurality of relevant configuration data that do not have the purpose network element for a certain reason, then data are all invalid by the gross.

According to each described method among the claim 1-5, it is characterized in that 6, the webmaster platform has all marked the order of following three indexs to each network element when providing the network element that can supply user's selection:

Node is preface for several times, makes the ordering of the node number that final configuration need pass through during promptly through a certain node, minimum with the node number, second less, the 3rd fewly represent successively;

The topological ring order makes the ordering of the topological ring quantity that final configuration need pass through during promptly through a certain node, minimum with topological ring, second less, the 3rd represent successively less;

Physical pathway makes the ordering of the physical pathway length that final configuration need pass through during promptly through a certain node, the shortest with topological ring, second short, the 3rd shortly represent successively.

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