KR20170139870A - Method and System for setting a communication link using a service ID on operation between other manufactures in MPLS-TP based network - Google Patents

Abstract

The present invention provides a method and a system for setting a line using a service ID when interworking with a heterogeneous vendor network of a multi-protocol label switching-transport profile (MPLS-TP) based network, which mutually compare an error through an ID assignment of a service terminal and automatically perform a line service prior to a provision step capable of affecting other lines when setting an end to end line of an MPLS-TP equipment network between heterogeneous vendors, thereby reducing the providing error. The present invention includes an ID assignment method performing the same, a comparison method, and automatic setting histories. The system for setting a line using a service ID when interworking with a heterogeneous vendor network of an MPLS-TP based network comprises: a line management device; and a management device of each company.

Description

Technical Field [0001] The present invention relates to a method and system for setting up a line using a service ID in a heterogeneous vendor network of an MPLS-TP based network,

In the present invention, the same service line ID is defined in order to automatically eliminate an unnecessary line setting error in an end-to-end line setting method when a multi-protocol label switching-transport profile (MPLS-TP) (EMS) of the heterogeneous vendor are compared with each other to automatically prevent a setting error.

The existing IP backbone network consists of IP datagram routers (both core and edge are routers) and consists of a pure router infrastructure. In this case, all routers in the network have Layer 3 packet forwarding function . Existing routers look for next-hop (data-forwarding) paths of packets based on software, and as forwarding speed increases, this forwarding function becomes a major factor in overall network performance degradation.

Multiprotocol Label Switch (MPLS) technology is a method of transferring IP packets by combining ATM's high-speed multi-service switching function based on existing routing method. It provides high-speed data transmission and QoS (Quality of Service) To provide the function of.

In order to speed up packet forwarding, Layer 3 switching technology such as ATM or Frame Relay is used, and Layer 3 switching technology that combines Layer 3 routing function to provide network scalability. In such MPLS, short and fixed length And a label switching method of transmitting a packet based on a label is used.

Therefore, the IP header processing process required for transmitting the IP packet to the destination is performed only once at the time of entering the MPLS network without having to be performed in all the hops. At this point, the IP packet is mapped to one label, so that high-speed Layer 2 data transmission using the switching technology is performed, and various additional services such as traffic engineering and VPN (Virtual Private Network) can be provided in some cases.

FIG. 1 is a diagram showing a configuration of an MPLS-TP network composed of this model.

1, an end-to-end network of a heterogeneous vendor configured with a first network composed of MPLS-TP equipment and management apparatus (EMS) of company A and an MPLS-TP equipment and management apparatus (EMS) .

In this configuration, mutual service line configuration is wrong due to different communication methods and configuration methods between heterogeneous vendors. In this case, end-to-end communication is impossible. This is because the interworking between heterogeneous vendors is done manually.

In order to prevent this, it is necessary to check the error automatically such as service setting through mutual management among heterogeneous vendors to prevent wrong line information configuration.

Korea Patent Publication No. 2014-0117993 Korean Patent Publication No. 2013-0068450

According to the present invention, there is provided an MPLS-TP (Multiprotocol Label Switching-Transport Profile) -based network according to a line error_MPLS-TP standard composed of heterogeneous equipment, In order to prevent the difference caused by each item, the line management device can equally assign the line IDs to each other and compare the line IDs, thereby preventing a wrong line configuration.

According to another aspect of the present invention, there is provided a method for establishing an end-to-end line in a heterogeneous vendor network in an MPLS-TP based network, the method comprising the steps of: (a) ; (b) the management apparatus of each company constructs the line information to be set in the MPLS-TP equipment of the management area before the actual provisioning, and sends the service management ID to the management apparatus of the other company as an index; And (c) completing the end-to-end line setting without any error by confirming whether the line information is automatically matched or usable information through the service management ID transmitted from the third party do.

Specifically, the line information in step (b) is at least one of LSP (Label Switched Path) information, tunnel information, PW (pseudo wire) information, and service information.

According to another aspect of the present invention, there is provided an end-to-end line establishment system for interworking a heterogeneous vendor network in an MPLS-TP based network, the system comprising: ; And establishing the line information to be set in the MPLS-TP equipment before the actual provisioning with reference to the service management ID given from the line management apparatus, and transmitting the line information to the management apparatus of the other company using the service management ID as an index And the management apparatus of each company checks whether the line information is automatically matched or usable information through the service management ID transmitted from the third party and ends the end-to-end line setting without error .

According to the embodiments of the present invention, when an MPLS-TP heterogeneous vendor network is interworked, an error on an additional line is not compared with an existing line before the provisioning is performed , The reliability of the service of the network can be further enhanced.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

FIG. 1 is a diagram showing a configuration and an interworking state of an MPLS-TP network among general heterogeneous vendors.
2 is a block diagram illustrating a process of assigning and managing a service management ID implemented in an embodiment of the present invention.
3 is a diagram illustrating a forwarding method of a general MPLS switch.
4 is a flowchart showing a process up to the time when a service management ID given by the line management apparatus is assigned to each EMS and used for setting an end-to-end line.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification and claims, where a section includes a constituent, it does not exclude other elements unless specifically stated otherwise, but may include other elements.

Now, a circuit setting method in a heterogeneous vendor network according to an embodiment of the present invention will be described in detail.

2 is a functional block diagram illustrating a process of assigning and managing a service management ID in an MPLS-TP network according to an embodiment of the present invention.

The heterogeneous vendor MPLS-TP network includes a service management apparatus 10, management systems (EMS) 110 and 210 of each company, and networks 150 and 250 of respective companies.

First, the line management apparatus 10 is configured to generate a service management ID based on a unique service management ID generation rule defined by the service provider side, and to assign and manage the service management ID to the management apparatuses 110 and 210 of each company have.

The MPLS-TP network between heterogeneous vendors consists of MPLS-TP equipment 150 (first network) of company A and MPLS-TP equipment 250 (second network) of company B. Each network includes a plurality of nodes A Node, a B-node / C-node, and a D-node).

Each of the networks 150 and 250 includes a User to Network Interface (UNI) between the user terminal and the MPLS network and an Network to Network Interface (NNI) between the MPLS network.

Each of the network management apparatuses 110 and 210 (EMS (Element Management System)) is composed of a plurality of nodes A to D such as a router to form an LSP. Each node may be any one of an ingress node, a label switch, and an egress node as shown in FIG. MPLS networks can assign service classes and bands according to the type of service desired by users because labels are used to make appointments in advance by using labels, and it can be forwarded according to the performance of various physical lines and switches such as general ATM or frame relay It is possible to provide the quality desired by the user.

The LSP refers to a path between an ingress router and an egress router in an MPLS, and an LSP generated between two routers is referred to as a 'Tunnel', which means a path through which only an MPLS packet can be transmitted.

In general, the standard management information of the MPLS-TP-based network conforms to the MPLS-TP standard, but there is a difference in the items to be managed and the service can not be provided even after the line is configured . In the present invention, in order to prevent such an error, a common service management ID is equally given to the heterogeneous vendor network management apparatus (EMS) in the line management apparatus and the information related thereto is provided together, Inter-End to End Prevent errors in line configuration.

Now, the process of assigning and comparing service management IDs according to an embodiment of the present invention will be described in detail.

In the MPLS-TP network, the standardized information for setting up an end-to-end circuit is LSP (Label Switched Path) information, tunnel information, PW (pseudo wire) information, and service information. The management system (EMS) that manages these devices actually manages to control and inquire the equipment through communication channels of different formats for each manufacturer. In case of heterogeneous vendor interworking, the management contents for end-to-end line establishment are different. In order to provide the service, the contents are manually set and confirmed.

As shown in FIG. 2, assigns unique service management IDs for end-to-end service lines so as to have uniqueness in the line management apparatus 10, and assigns them to the management apparatuses 110 and 210 between heterogeneous vendors. The management apparatus of the heterogeneous vendor collects setting parameters such as PW information and LSP information used by using the unique service management ID as a unique line number, and configures the setting parameters as one line setting information (label).

When the line configuration information configured as described above is sent to the network management apparatus of the heterogeneous vendor with the service management ID as an index, if the configuration parameter according to the unique service management ID is automatically checked for available content and determined as a configurable parameter Set up the service line.

In order for MPLS-TP-based networks to be able to provide inter-vendor services to different vendors, label labels such as LSP (Label Switched Path) and PW (Pseudo Wire) must match. These label values have the technical characteristics that should be unique within the management group, and therefore, the service provider usually uses these label values that are guaranteed to be uniquely used as the service management ID.

As shown in FIG. 4, the line management apparatus 10 generates a service management ID and assigns the same to the management apparatuses 110 and 210 of the heterogeneous vendor network, respectively (S10). Here, the service management ID is given and managed based on the unique service management ID generation rule defined by the service provider.

The management apparatuses 150 and 250 of each company check whether the service management ID exists or not and if there is no duplication, the line information to be set in the MPLS-TP equipment of the corresponding management area is constructed before actual provisioning And transmits the service management ID as an index to the third-party management apparatus (S20 to S40). Here, the line information may include input / output label information such as a label switching path (LSP) and a pseudo wire (PW).

Then, the management apparatus of each company confirms whether the line information is automatically matched or usable information through the service management ID transmitted from the third party, and ends the end-to-end line setting without error (S50).

In general, MPLS links must be constructed in order to transfer data to heterogeneous devices manufactured by different companies in an MPLS-TP based network. Label switching paths (LSPs) and pseudo wires (PWs) The service management ID (input / output label) of the server must match each other. The output label of the LSP must match the input label of the next node and the uniqueness within the node must be guaranteed.

For example, when unique and consistent label information is configured from the originating node to the destination node, if necessary, via the terminating node, the LSP is able to construct a complete path. That is, the virtual line PW must be linked to the label switching path LSP to start the service, and the PW output label OUT label of the starting LSP must match the PW input label IN label of the destination LSP , The PW label in an LSP group must also be guaranteed to be unique.

The pseudo wire packetizes the actual physical circuit and is linked to the LSP by putting it into the protocol with the input label (IN Label) and the output label (OUT Label). In this protocol, the data of the LSP packet arriving through the heterogeneous device is transferred to the virtual line whose input label and output label are matched. After decoding the data on the label, the input and output labels and one or more virtual The line or another lower LSP is linked to the data.

The LSP is a path that serves as a packet bus for delivering one or more virtual lines, and the I / O label information of the LSP must be provisioned before the service is started. Once an LSP has been created with a specific label at one of the nodes that are departing or arriving during the interworking interval, if the entire LSP is configured with the same label or an interpretable changeable label in the remaining departure or arrival nodes including the route node, the label switching path is completed And ready for service. In this case, the means by which the LSP label information of the correspondent node is known based on the node on which the LSP has not yet been generated is a management apparatus (EMS). When the management apparatus (EMS) exchanges its information with the partner management apparatus, You can build a label.

However, the standard management information of the MPLS-TP-based network manages the same contents in accordance with the MPLS-TP standard. However, since each manufacturer has different management types, setting and inquiry methods, it can be provided by direct management integration It was not.

In order to solve this inconvenience, the present invention is based on the MPLS-TP-based network according to the MPLS-TP standard, In order to prevent an error that may occur, the line management apparatus can equally assign the line IDs on both sides and compare the line IDs, thereby preventing an erroneous line configuration.

The embodiments described above are those in which the elements and features of the present invention are combined in a predetermined form. Each component or feature shall be considered optional unless otherwise expressly stated. Each component or feature may be implemented in a form that is not combined with other components or features. It is also possible to construct embodiments of the present invention by combining some of the elements and / or features. The order of the operations described in the embodiments of the present invention may be changed. Some configurations or features of certain embodiments may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments. It is clear that the claims that are not expressly cited in the claims may be combined to form an embodiment or be included in a new claim by an amendment after the application.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Claims (5)

In circuit configuration of a heterogeneous vendor network based on MPLS-TP (Multi-Protocol Label Switching-Transport profile)
(a) the line management apparatus generates and assigns service management IDs to the management apparatuses of the heterogeneous vendor network, respectively;
(b) the management apparatus of each company constructs the line information to be set in the MPLS-TP equipment of the management network before the actual provisioning, and sends the service management ID to the management apparatus of the other company as an index; And
(c) The management device of each of the above-mentioned companies confirms whether the information of the line is automatically matched or usable information through the service management ID transmitted from the third party and ends the end-to-end line setting without error A method of establishing a line using a service ID when interworking with a heterogeneous vendor network of an MPLS-TP based network.
The method according to claim 1,
The circuit information in the step (b) may include at least one of LSP (Label Switched Path) information, tunnel information, PW (pseudo wire) information, and service information. A method of establishing a line using a service ID.
The method according to claim 1,
Wherein the service management ID is a unique ID generated based on a unique ID generation rule in the step (a), wherein the MPLS-TP-based network uses a service ID when interworking with a heterogeneous vendor network.
In circuit configuration of a heterogeneous vendor network based on MPLS-TP (Multi-Protocol Label Switching-Transport profile)
A line management apparatus that generates a service management ID and assigns the same to the management apparatus of the heterogeneous vendor network; And
The MPLS-TP apparatus refers to the service management ID assigned from the line management apparatus to construct the line information to be set in the MPLS-TP apparatus before provisional provisioning, and then transmits the service management ID to the management apparatus of the other company Comprising:
The management apparatus of each of the above-mentioned managements confirms whether the information of the line is automatically matched or usable information through the service management ID transmitted from the third party, and ends the end-to-end line setting without error. A line establishment system using service ID for interworking with heterogeneous vendor networks in the base network.
The method of claim 4,
Wherein the line information includes at least one of LSP (Label Switched Path) information, tunnel information, PW (pseudo wire) information, and service information.

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