CN1921412B - System and method of circuit shearing and connecting - Google Patents

Abstract

The invention discloses a system for realizing circuit cutover, which includes a user terminal and network elements, and also includes a network management workstation, which is used to calculate the route of a prefabricated circuit and create a prefabricated circuit according to a circuit cutover request sent by a user terminal. The circuit and route generate services required for actual circuit cutover, and deliver the services to network elements. The invention also discloses a circuit cutover method, including: creating a prefabricated circuit and a route of the prefabricated circuit according to a user's circuit cutover request, and generating the business required for the actual cutover circuit according to the prefabricated circuit and route , and deliver the service to the network element, and perform actual circuit cutover on the network element. The invention enables the user to remodel the existing network on the network management workstation in advance, re-plan the network resources, send the configuration to the network element after the planning is completed, and automatically complete the remodeling of the original network, improve the efficiency of network remodeling, and reduce errors probability.

Description

System and method for circuit cutover

technical field

The invention relates to a network transformation technology, in particular to a system and method for circuit cutover.

Background technique

In the existing network, due to the previous unreasonable network planning or the relocation of the equipment room, frequent transmission service cutovers often occur. As shown in Figure 1, there is currently an A-B-C link, and an interruption occurs on the B-C segment. It is necessary to switch the services on B-C to B-D, which involves service cutover on the circuit. Since there may be multiple paths on the link B-C, the service cutover may be the cutover of services on a single path, or the cutover of services on multiple paths.

If the network elements on the link are cut over directly, network management personnel need to manually delete the entire circuit and recreate a new circuit. The service interruption time during the cutover is too long, which greatly reduces the user's service satisfaction. The current solution is to write the circuit that needs to be cut over and the service that needs to be modified in the form of a command script, execute the script at one time, and modify the corresponding service. However, since this method uses a script language to write commands, it is prone to errors during the writing process, and the correctness of the business can only be verified manually; in addition, when the business is cut over, the circuit cannot be visually viewed, and the end-to-end circuit creation function cannot be provided. less efficient.

Contents of the invention

The purpose of the present invention is to provide a system and method for circuit cutover, which is used to improve the work efficiency of network circuit cutover and shorten the time for interrupting network services during the cutover operation.

In order to achieve the above purpose, the present invention provides a system for implementing circuit cutover, including user terminals and network elements, and also includes:

The network management workstation is used to release the time slots and ports occupied by the circuit to be cutover, obtain all available resources of the circuit to be cutover, calculate the route of the prefabricated circuit and create the prefabricated circuit according to the circuit cutover request sent by the user terminal According to the prefabricated circuit and the route of the prefabricated circuit, the services required for the actual cutover of the circuit are generated, and the service is sent to the network element; the circuit cutover request includes the source end time slot and the sink end of the prefabricated circuit time slot;

The network element is used to perform actual circuit cutover according to the service.

The network management workstation specifically includes:

The prefabricated circuit end-to-end module is used to release the time slots and ports occupied by the circuit to be cut over, and obtain all available resources of the circuit to be cut over, generate a route for the prefabricated circuit, and create a prefabricated circuit according to the route;

The service configuration module is used to generate services required for actual circuit cutover according to the prefabricated circuit and the route of the prefabricated circuit, and deliver the generated services to network elements.

The prefabricated circuit end-to-end module further includes:

The prefabricated circuit creation module is used to release the time slots and ports occupied by the circuit to be cut over, and obtain all available resources of the circuit to be cut over, and create a prefabricated circuit;

Prefab Routing module for generating routes for newly created prefab circuits.

The prefabricated circuit creating module is further used to create an emergency prefabricated circuit.

The present invention also provides a method for circuit cutover, including:

Calculate the route of the prefabricated circuit according to the user's circuit cutover request and create the prefabricated circuit, generate the service required for the actual cutover circuit according to the prefabricated circuit and the route of the prefabricated circuit, and send the service to the network element, Carry out actual circuit cutover on the network element; the circuit cutover request includes the source end time slot and the sink end time slot of the prefabricated circuit;

The creation of a prefabricated circuit specifically includes: judging whether the user's operation is to create a prefabricated circuit, and if so, releasing the time slot and port flag occupied by the specified circuit, obtaining all available resources on the specified circuit, and determining the prefabricated circuit to be generated. Circuit routing and time slots.

The method further includes: creating an emergency prefabricated circuit; the creation of the emergency prefabricated circuit specifically performs the following steps:

Specify the network element, single board or port that needs to be cutover, and release the time slot and port flag occupied by the specified circuit that needs to be cutover;

Obtain all available resources on the cutover circuit specified and determine the route and time slot of the generated emergency prefabricated circuit;

Record and copy the path information of the generated emergency prefabricated circuit.

The actual circuit cutover described specifically performs the following steps:

Generate services that need to be created and deleted according to the created prefabricated circuit and the route of the prefabricated circuit;

Deliver the service to the network element according to the network element to which it belongs.

After sending the service to the network element, it also includes:

The path information of the cutover circuit is deleted, and the attribute of the prefabricated circuit is changed to a common circuit attribute.

In the present invention, the actual circuit cutover is performed after creating the prefabricated circuit, so that the user can modify the existing network on the network management workstation in advance, re-plan the network resources, and send the configuration to the network element after the planning is completed, and automatically complete the original With network transformation, the efficiency of network transformation is improved, and the time for interrupting network services and the probability of errors during cutover operations are reduced.

Description of drawings

FIG. 1 is a schematic diagram of circuit cutover in the prior art;

Fig. 2 is a system structure diagram for realizing circuit cutover in an embodiment of the present invention;

3 is a flowchart of a method for circuit cutover in an embodiment of the present invention;

4 is a flowchart of a method for creating and sharing a prefabricated circuit with existing circuit ports and time slots in an embodiment of the present invention;

5 is a flow chart of a method for creating an emergency prefabricated circuit in an embodiment of the present invention;

FIG. 6 is a flowchart of a method for performing actual circuit cutover in an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

In the present invention, the actual circuit cutover is performed after creating the prefabricated circuit, so that the user can modify the existing network on the network management workstation in advance, re-plan the network resources, and send the configuration to the network element after the planning is completed, and automatically complete the original With network transformation, improve the efficiency of network transformation and reduce the probability of errors.

Fig. 2 is a system structure diagram for implementing circuit cutover in the embodiment of the present invention, including user terminal 1 and network elements, the user puts forward the demand for circuit cutover to the network management workstation through user terminal 1, and the actual operation of circuit cutover is performed on the network Completed on meta, the system also includes:

The network management workstation 4 is used to calculate the route of the prefabricated circuit and create the prefabricated circuit according to the circuit cutover request sent by the user terminal, and generate the services required for the actual cutover circuit according to the prefabricated circuit and the route of the prefabricated circuit, and The service is delivered to the network element;

The network element is used to perform actual circuit cutover according to the service.

Described network management workstation 4 specifically comprises:

The prefabricated circuit end-to-end module 2 is used to generate a route for the prefabricated circuit and create a prefabricated circuit according to the route;

The service configuration module 3 is used to generate services required for actual circuit cutover according to the prefabricated circuit and the route of the prefabricated circuit, and deliver the generated services to network elements.

The prefabricated circuit end-to-end module specifically includes:

The prefabricated circuit creation module 21 is used to create a prefabricated circuit and an emergency prefabricated circuit, and is used to release the time slots and ports occupied by the circuit to be cut over, and obtain all available resources of the circuit to be cut over;

The prefabricated circuit routing module 22 is configured to create routes for newly created prefabricated circuits and emergency prefabricated circuits.

FIG. 3 is a flow chart of a method for circuit cutover in an embodiment of the present invention. The prerequisite for executing this process is that the optical fiber of the transmission device is connected correctly. The cutover of the circuit in the present invention does not involve the physical transformation of the network, but only the cutover of data. The process specifically performs the following steps:

Step 301: According to the user's circuit cutover request, specify the source-sink time slot of the prefabricated circuit to be created, calculate the route of the prefabricated circuit and create the prefabricated circuit.

Step 302: Generate services required for actual circuit cutover according to the created prefabricated circuits and their routes, and deliver the services to network elements that execute the services.

Step 303, perform actual circuit cutover on the network element.

Wherein, step 301 specifically includes that the prefabricated circuit creation module of the network management workstation creates and shares prefabricated circuits with existing circuit ports and time slots and the routes of the prefabricated circuits.

As shown in Figure 1, a path on the link A-B-C wants to be migrated to the link A-B-D. If you want to share the existing circuit ports and time slots on the link A-B, you can create a path on the A-B-D link on the network management workstation. The prefabricated circuit of this path specifically executes the process shown in Figure 4:

Step 3011, the prefabricated circuit creation module judges whether to create a prefabricated circuit, if yes, execute step 3012; otherwise, execute step 3013;

Step 3012, clearing the time slot occupancy flag and the port occupancy flag of the path circuit on the link A-B-C;

Step 3013, the prefabricated circuit creation module acquires all available free ports and time slots on the circuit for use in creating the prefabricated circuit, and the prefabricated circuit routing module calculates the route of the path, specifying the port occupied by the source and sink terminals of the prefabricated circuit to be created time slot, the routing algorithm can adopt the shortest path first;

Step 3014, the prefabricated circuit creation module further judges whether to create a prefabricated circuit, if yes, execute step 3015; otherwise, execute step 3016;

Step 3015, the prefabricated circuit creation module records the route of the path calculated in step 3013, the occupied time slot, the used path ID, and the path direction, and copies the path information of the path, the path information includes the path name and the use of the path The customer property of the end;

Step 3016, the prefabricated circuit creation module records the route of the path calculated in step 3013, the occupied time slot, the used path ID, and the path direction, and generates the service of the network element of the path, and delivers the service to the network element.

This process clears the occupied time slot and port flag of the specified circuit, so that the newly created circuit can share resources with the circuit.

Preferably, step 301 may also include creating an emergency prefabricated circuit. Specifically, the purpose of the step of creating an emergency prefabricated circuit is to provide a method for emergency cutover of the circuit. When a network element is powered off or a single board or port is damaged, the Create prefabricated circuits. As shown in Figure 1, if endpoint C fails, and you want to migrate the path on endpoint C to endpoint D as a whole, for example, after the existing link A-B-C on endpoint C, after migrating the path on endpoint C to D, Generate a new prefab circuit at link A-B-D.

The process of creating an emergency prefabricated phone is shown in Figure 5, including:

Step 3011', the prefabricated circuit creation module designates which network element, single board or port path to switch to which network element, single board or port;

In this step, the circuit to be migrated and the destination network element, port or board to be migrated are specified, and the source end and sink end of the prefabricated circuit are automatically adapted according to the destination network element, port or board.

Step 3012', the prefabricated circuit creation module clears the time slot occupancy flags and port occupancy flags of all path circuits on the link A-B-C, so that the newly created prefabricated circuit can share the resources on the link A-B.

Step 3013', obtain the available free ports and time slots of all path circuits on the link A-B-C for use when creating prefabricated circuits, and the prefabricated circuit routing module cyclically calculates the routes of all paths to determine the occupied time slots, and the routing algorithm can use shortest path first;

Step 3014', the prefabricated circuit creation module records the routes, occupied time slots, used path IDs, and path directions of all paths calculated in step 3013', and copies the path names of all paths and the attributes of customers using the paths.

The actual circuit cutover described in step 303 provides an execution method for the actual cutover. On the basis of the previously created prefabricated circuit, the cutover operation can be performed directly, and the previously created prefabricated circuit plan can be quickly cutover to the actual network element.

Before the actual cutover, it is necessary to keep a data record for the original working circuit, so that after the cutover, if you are not satisfied with the cutover result, you can cutover again to restore the working circuit to its original state. This provides a simple and efficient method of correcting miscutovers.

The actual circuit cutover process is shown in Figure 6, including:

Step 3031, according to the previously created prefabricated circuits, the service configuration module determines the services that need to be created and deleted;

Step 3032, the service configuration module sends the service to the network element;

Step 3033, the service configuration module deletes the path information of the original cutover circuit at the network layer, modifies the attribute of the prefabricated circuit, and modifies it into an ordinary circuit attribute.

In the prior art, the actual cutover of the circuit is to delete the entire circuit and recreate a circuit, but the technical solution of the present invention only needs to create and delete some services that need to be modified, and share other circuits, so in The execution efficiency is much higher than that of the prior art.

In a word, the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (8)

1. A system for realizing circuit cutover, comprising a user terminal and a network element, characterized in that it also includes: The network management workstation is used to release the time slots and ports occupied by the circuit to be cutover, obtain all available resources of the circuit to be cutover, calculate the route of the prefabricated circuit and create the prefabricated circuit according to the circuit cutover request sent by the user terminal According to the prefabricated circuit and the route of the prefabricated circuit, the services required for the actual cutover of the circuit are generated, and the service is sent to the network element; the circuit cutover request includes the source end time slot and the sink end of the prefabricated circuit time slot; The network element is used to perform actual circuit cutover according to the service. 2. The system for realizing circuit cutover according to claim 1, wherein the network management workstation specifically includes: The prefabricated circuit end-to-end module is used to release the time slots and ports occupied by the circuit to be cut over, and obtain all available resources of the circuit to be cut over, generate a route for the prefabricated circuit, and create a prefabricated circuit according to the route; The service configuration module is used to generate services required for actual circuit cutover according to the prefabricated circuit and the route of the prefabricated circuit, and deliver the generated services to network elements. 3. The system for implementing circuit cutover according to claim 2, wherein the prefabricated circuit end-to-end module further comprises: The prefabricated circuit creation module is used to release the time slots and ports occupied by the circuit to be cut over, and obtain all available resources of the circuit to be cut over, and create a prefabricated circuit; Prefab Routing module for generating routes for newly created prefab circuits. 4 . The system for implementing circuit cutover according to claim 3 , wherein the prefabricated circuit creating module is further used to create an emergency prefabricated circuit. 5. A method for circuit cutover, comprising: Calculate the route of the prefabricated circuit according to the user's circuit cutover request and create the prefabricated circuit, generate the service required for the actual cutover circuit according to the prefabricated circuit and the route of the prefabricated circuit, and send the service to the network element, Carry out actual circuit cutover on the network element; the circuit cutover request includes the source end time slot and the sink end time slot of the prefabricated circuit; The creation of a prefabricated circuit specifically includes: judging whether the user's operation is to create a prefabricated circuit, and if so, releasing the time slot and port flag occupied by the specified circuit, obtaining all available resources on the specified circuit, and determining the prefabricated circuit to be generated. Circuit routing and time slots. 6. The method for circuit cutover according to claim 5, characterized in that the method further comprises: creating an emergency prefabricated circuit; the creation of the emergency prefabricated circuit specifically performs the following steps: Specify the network element, single board or port that needs to be cutover, and release the time slot and port flag occupied by the specified circuit that needs to be cutover; Obtain all available resources on the cutover circuit specified and determine the route and time slot of the generated emergency prefabricated circuit; Record and copy the path information of the generated emergency prefabricated circuit. 7. The method for circuit cutover according to claim 5, characterized in that, the actual circuit cutover specifically performs the following steps: Generate services that need to be created and deleted according to the created prefabricated circuit and the route of the prefabricated circuit; Deliver the service to the network element according to the network element to which it belongs. 8. The method for circuit cutover according to claim 7, further comprising: The path information of the cutover circuit is deleted, and the attribute of the prefabricated circuit is changed to a common circuit attribute.

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