WO2017177794A1

WO2017177794A1 - Service path establishment method, apparatus and system

Info

Publication number: WO2017177794A1
Application number: PCT/CN2017/077341
Authority: WO
Inventors: 詹双平
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-04-13
Filing date: 2017-03-20
Publication date: 2017-10-19
Also published as: CN107294849B; CN107294849A

Abstract

A service path establishment method, apparatus and system. The method comprises: receiving a service sending request of a source service edge network element, the service sending request carrying a first address identifier of a source user edge network element and a second address identifier of a destination network element, the source user edge network element and the destination network element belonging to the source service edge network element; and establishing a service path between the source user edge network element and the destination network element according to global routing information, the global routing information comprising routing information of one or more service edge network elements. The technical solution resolves the problem in the related art of failure to establish a service path according to service driving, thereby achieving the effects of reducing consumption of network resources, reducing strong coupling between a bearer network and a radio and simplifying the network architecture.

Description

Method, device and system for establishing business path

Technical field

This document relates to, but is not limited to, the field of communications, and relates to a method, device and system for establishing a service path.

Background technique

The base station backhaul service includes the east-west traffic between the base station and the base station in addition to the north-south traffic between the base station and the base station. A typical southbound traffic in a wireless network in the related art is an S1 service, and an eastbound traffic is an X2 service.

There are two solutions for the wireless backhaul bearer in the related art. One solution is a Layer 2 transparent virtual private network (VPN) L2VPN + a Layer 3 transparent private network L3VPN, and the other solution is a layer. L3VPN two options. For the L2VPN+L3VPN solution, FIG. 1 is a schematic diagram of the L2VPN+L3VPN service bearer solution in the related art. As shown in FIG. 1 , the eNodeB is a base station network element, and the P (provider, device) refers to an intermediate node of the operator network, and corresponding thereto. It is a PE (Provider Edge, an edge node of the carrier network). The X2 service between the base stations needs to be forwarded through the bridge point. The purpose of this is to avoid establishing a fully connected L2VPN tunnel between the base stations and simplify the network. However, the disadvantage is that the near-forward forwarding of the east-west traffic of the base station cannot be achieved. For the hierarchical L3VPN solution, FIG. 2 is a hierarchical L3VPN service bearer solution according to the related art. As shown in FIG. 2, the problem is similar to that of the L2VPN+L3VPN, and the east-west traffic between the base stations needs to be forwarded through the default gateway. The reason is that the access PE only has a route to the Evolved Packet Core (EPC) of the Internet Protocol (IP), and there is no other route to the PE. Reduce the requirements for access device routing table capabilities and reduce network construction costs.

With the development of wireless technology, the east-west traffic between base stations becomes more and more important. In addition to the explosive growth of traffic, the requirements for delay are getting higher and higher, and the above two schemes will lead the service to bypass the upper node. As a result, the bandwidth of the backhaul network is wasted and the service delay is increased. Therefore, it is necessary to establish a proximity connection between the access PEs.

There are two options for related technologies to achieve this kind of proximity forwarding: one solution needs to be The carrier network knows in advance which wireless base stations have the demand for east-west traffic, and then establishes the corresponding connections in advance. However, this solution requires a strong coupling relationship between the bearer network and the wireless, which is not easy to implement.

In another solution, the bearer network does not care about the demand for east-west traffic between the base stations, but establishes a full mesh (FULLMESH) connection to all base stations, so that the traffic of any base station can be forwarded nearby. However, this kind of scheme will lead to too many connections and too high consumption of network resources.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a method, a device and a system for establishing a service path, which solves the problem that the service path cannot be established according to the service driver in the related art.

An embodiment of the present invention provides a method for establishing a service path, where the method includes: receiving a service sending request of a source service edge network element, where the service sending request carries a source under the source service edge network element a first address identifier of the user edge network element and a second address identifier of the target network element; the service path between the source user edge network element and the target network element is established according to the global routing information, where the global routing information is Includes routing information for one or more service edge network elements.

Optionally, before the establishing the service path between the source user edge network element and the target network element according to the global routing information, the method further includes: acquiring the one or more by at least one of the following methods The routing information of the serving edge network element: dynamic routing protocol learning, static routing configuration.

Optionally, the establishing a service path between the source user edge network element and the target network element according to the global routing information includes: searching, according to the first address identifier, the source user edge from the global routing information a source service edge network element connected to the network element, and establishing a first service path between the source service edge network element and the source user edge network element; establishing the source service edge network element according to the second address identifier a second service path with the target network element; determining, by the specified route of the first service path and the second service path, a service between the source user edge network element and the target network element path.

Optionally, the target network element comprises: a target user edge device and/or a target service edge device.

Optionally, the second service path includes one of the following: a multi-label label switched MPLS tunnel and corresponding configuration information, a multi-label label switching transport application MPLS-TP tunnel, and corresponding configuration information.

The embodiment of the present invention further provides a device for establishing a service path, where the device includes: a receiving module, configured to receive a service sending request of a source serving edge network element, where the service sending request carries the source service a first address identifier of the source user edge network element and a second address identifier of the target network element; the establishing module is configured to establish the source user edge network element and the target network element according to the global routing information An inter-service path, wherein the global routing information includes routing information of one or more serving edge network elements.

Optionally, the device further includes: an obtaining module, configured to: before the establishing module establishes a service path between the source user edge network element and the target network element according to global routing information, by using at least Obtaining the routing information of the one or more service edge network elements: dynamic routing protocol learning, static routing configuration.

Optionally, the establishing module includes: a processing unit, configured to: according to the first address identifier, find a source serving edge network element connected to the source user edge network element from the global routing information, and establish the source service a first service path between the edge network element and the source user edge network element, and an establishing unit, configured to establish a second between the source service edge network element and the target network element according to the second address identifier a service path, the determining unit, configured to determine that the specified route through the first service path and the second service path is a service path between the source user edge network element and the target network element.

The embodiment of the present invention further provides a service path establishment system, where the system includes: a source service edge network element, a controller, a target network element, and a source user edge network element; wherein the source service edge network element includes reporting a module, the reporting module is configured to report a service sending request to the controller, where the service sending request carries a source user edge network under the jurisdiction of the source serving edge network element a first address identifier of the element and a second address identifier of the target network element; the controller, configured to establish a service path between the source user edge network element and the target network element according to global routing information, where The global routing information includes routing information of one or more serving edge network elements.

According to the technical solution of the embodiment of the present invention, the service sending request of the source serving edge network element is received, where the service sending request carries the first address identifier of the source user edge network element vested by the source serving edge network element And the second address identifier of the target network element, the service path between the source user edge network element and the target network element is established according to the global routing information, where the global routing information includes one or more service edge network elements The routing information solves the problem that the related technology cannot establish a service path according to the service driver, thereby achieving the effect of reducing network resource consumption, reducing the strong coupling between the bearer network and the wireless, and simplifying the network architecture. The embodiment of the invention further provides a computer readable storage medium, wherein the computer readable storage medium stores computer executable instructions, and the method for establishing a service path is implemented when the computer executable instructions are executed.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the present application, and are intended to be a part of this application. In the drawing:

1 is a schematic diagram of a L2VPN+L3VPN service bearer solution in the related art of the present application;

2 is a layered L3VPN service bearer solution in the related art of the present application;

3 is a flowchart of a method for establishing a service path according to Embodiment 1 of the present invention;

4 is a schematic diagram of a network architecture according to Embodiment 1 of the present invention;

FIG. 5 is a structural block diagram of a device for establishing a service path according to Embodiment 1 of the present invention; FIG.

6 is a block diagram 1 of an optional structure of a device for establishing a service path according to Embodiment 1 of the present invention;

7 is a block diagram 2 of an optional structure of a device for establishing a service path according to Embodiment 1 of the present invention;

8 is a structural block diagram of a system for establishing a service path according to Embodiment 1 of the present invention;

9 is a schematic diagram of a network architecture according to Embodiment 2 of the present invention;

FIG. 10 is a schematic diagram of establishing an X2 service path between base stations according to Embodiment 2 of the present invention.

detailed description

The present application will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or order.

Embodiment 1

In this embodiment, a method for establishing a service path is provided. FIG. 3 is a flowchart of a method for establishing a service path according to an embodiment of the present invention. As shown in FIG. 3, the method includes:

Step S302, receiving a service sending request of the source serving edge network element, where the service sending request carries the first address identifier of the source user edge network element and the second address identifier of the target network element that are managed by the active serving edge network element;

In this embodiment, the address identifier information may be an IP (Internet Protocol) address, a MAC (Medium Access Control) address, a temporarily assigned network identifier, or the like.

Step S304: Establish a service path between the source user edge network element and the target network element according to the global routing information, where the global routing information includes routing information of one or more service edge network elements.

In this embodiment, the global routing information may be a global routing table.

And receiving, by the foregoing technical solution, a service sending request of a source serving edge network element, where the service sending request carries a first address identifier of a source user edge network element and a second target target network element that are vested by the active serving edge network element The address identifier is used to establish a service path between the source user edge network element and the target network element according to the global routing information, where the global routing information includes routing information of one or more service edge network elements, which solves the problem that the related technology cannot be driven according to the service. The problem of establishing a service path achieves a reduction in network resource consumption, a reduction in strong coupling between the bearer network and the wireless, and simplifies the effect of the network architecture.

Optionally, in this embodiment, the source user edge network element and the target are established according to the global routing information. Before the service path between the network elements, the method further includes: acquiring, by at least one of the following methods, routing information of one or more service edge network elements: dynamic routing protocol learning, static routing configuration.

Optionally, the foregoing routing information may be saved in the storage device. When other service edge network elements need to establish a service path, the saved routing information may be directly used to establish a service path, thereby implementing a service edge in the global network. A service path is established between the network elements and the user edge network elements connected to the service edge network element.

Optionally, the service path between the source user edge network element and the target network element is established according to the global routing information, including:

Step S11: Search for the source service edge network element connected to the source user edge network element from the global routing information according to the first address identifier, and establish a first service path between the source service edge network element and the source user edge network element.

Step S12: Establish a second service path between the source serving edge network element and the target network element according to the second address identifier.

Step S13: Determine a designated route between the source user edge network element and the target network element by using the specified route of the first service path and the second service path.

Optionally, the target network element may include: a target user edge device and/or a target service edge device.

When the target network element includes the target user edge device, the target service edge device connected to the target user edge device is further selected. Optionally, the target service edge device connected to the target user edge device may be found according to the global routing information. The second service path includes: a path between the source service edge network element and the target service edge network element, and a path between the target user edge device and the target service edge network element.

Optionally, the second service path may include one of the following: a multi-protocol label switch (MPLS) tunnel and corresponding configuration information, and a multi-label label switching transmission application (MPLS-Transport Profile, referred to as MPLS-TP) tunnel and corresponding configuration information. In this embodiment, the configuration information may be information such as a route for configuring a tunnel, such as interface information and address information at both ends of the tunnel. The MPLS tunnel and the MPLS-TP tunnel are the channels through which the source service edge device and the target service edge device directly communicate with each other, and do not need to pass through other core network elements to implement fast forwarding of services.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present application, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, or network device, etc.) to perform the methods of various embodiments of the present application.

In the embodiment of the present invention, a device for establishing a service path is further provided. The device may be separately disposed in the controller, or may be coupled to an associated network element in the network, such as a service edge device. The foregoing embodiments and optional implementations have been implemented, and the descriptions thereof have been omitted. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

4 is a schematic diagram of a network architecture according to an embodiment of the present invention. As shown in FIG. 4, the device for establishing a service path in this embodiment may be separately set in a controller, and the entire network architecture includes: a first user edge device (CE, Customer) Edge), a second user edge device CE2, a first serving edge device PE1, a second serving edge device PE2, a third serving edge device PE3, and a fourth serving edge device PE4, wherein the user edge device (Customer Edge, referred to as The CE can be a user equipment such as a router, a switch, an access network base station, and a host. A service edge device (Provider Edge, PE for short) is a service provider edge device, such as a router, and can be connected to the CE. Controller connection.

FIG. 5 is a structural block diagram of a device for establishing a service path according to an embodiment of the present invention. As shown in FIG. 5, the device includes:

The receiving module 50 is configured to receive a service sending request of the source serving edge network element, where the service sending request carries the first address identifier of the source user edge network element and the second target target network element of the active serving edge network element Address identifier

The establishing module 52 is configured to establish a service path between the source user edge network element and the target network element according to the global routing information, where the global routing information includes routing information of one or more serving edge network elements.

FIG. 6 is a block diagram of an optional structure of a device for establishing a service path according to an embodiment of the present invention. As shown in FIG. 6, the device includes:

The obtaining module 60 is configured to acquire routing information of one or more service edge network elements by using at least one of the following devices before the establishing module establishes a service path between the source user edge network element and the target network element according to the global routing information: Routing protocol learning, static routing configuration.

FIG. 7 is a block diagram 2 of an optional structure of a service path establishing apparatus according to an embodiment of the present invention. As shown in FIG. 7, the establishing module 52 includes:

The processing unit 70 is configured to: find, according to the first address identifier, the source service edge network element that is connected to the source user edge network element from the global routing information, and establish a first service between the source service edge network element and the source user edge network element. path;

The establishing unit 72 is configured to establish, according to the second address identifier, a second service path between the source serving edge network element and the target network element.

The determining unit 74 is configured to determine that the designated route via the first service path and the second service path is a service path between the source user edge network element and the target network element.

For example, when the target network element includes the target user edge device, the target network element may further include a target service edge device connected to the target user edge device.

In this embodiment, the target service edge device connected to the target user edge device may be found according to the global routing information. Optionally, the second service path may include: a path between the source service edge network element and the target service edge network element, and a path between the target user edge device and the target service edge network element.

Optionally, the second service path may include one of the following: the configuration information corresponding to the multi-label label switching MPLS tunnel, and the configuration information corresponding to the MPLS-TP tunnel of the multi-label label switching transmission application. In this embodiment, the configuration information may be used. Configure information such as the routing information of the tunnel, such as interface information and address information at both ends of the tunnel. The MPLS tunnel and the MPLS-TP tunnel are the channels through which the source service edge device and the target service edge device directly communicate with each other, and do not need to pass through other core network elements to implement fast forwarding of services.

This embodiment further provides a system for establishing a service path, which is implemented at the same time in this embodiment. And to the network equipment (such as PE in Figure 4), and the server / computer (such as the controller in Figure 4).

8 is a structural block diagram of a service path establishment system according to an embodiment of the present invention. As shown in FIG. 8, the system includes: a source service edge network element 80, a controller 82, a target network element 84, and a source user edge network element 86;

The source service edge network element 80 includes a reporting module 802, and the reporting module 802 is configured to report a service sending request to the controller 82. The service sending request carries the source user edge network element 86 under the active serving edge network element 80. The first address identifier and the second address identifier of the target network element 84;

The controller 82 is configured to establish a service path between the source user edge network element 86 and the target network element 84 according to the global routing information, where the global routing information includes routing information of one or more serving edge network elements.

It should be noted that the source user edge network element 86 in the system of this embodiment may be any CE, as long as it can communicate with the source service edge network element 80. Optionally, the controller 82 may also be disposed in the source user edge network element 86 or other intermediate network element. Alternatively, the management device may be separately configured to be connected to the source serving edge network element 80 and the source user edge network element 86.

Embodiment 2

The technical solution of the present application will be described below with reference to examples:

This example includes a forwarding device (PE device) running MPLS/MPLS-TP L3VPN and a controller to implement on-demand service path establishment by forwarding the interaction between the device and the controller.

As shown in FIG. 4, the present embodiment introduces a controller, and implements the technical solution of the present application by the centralized management of the network by the controller and the interaction between the forwarding device and the controller. Centralized management of controllers includes: routing management, route publishing, and path calculation.

FIG. 9 is a schematic diagram of a network architecture according to an embodiment of the present invention. As shown in FIG. 9, in this embodiment, a PE device includes a service connection request reporting module 90 (corresponding to the reporting module in FIG. 8). The process of establishing a connection includes:

In the step S21, the CE1 device sends the connection request to the PE device by using the IP address of the CE2 as the source IP address and the IP address of the CE2 device as the destination IP address.

It should be noted that, in the related art, the initial state of the PE device does not have a route of CE2. Information, so the exit of this service cannot be found in the routing table and thus cannot be forwarded.

Step S22, the PE1 sends a connection request to the service connection request reporting module, and the module reports the controller to request to establish a connection.

After the controller receives the connection request, perform the following steps:

Step S31, managing a routing table of each PE device in the network, including a private network route between the CE and the PE, and a public network route between the PE and the PE;

Step S32, receiving a connection establishment request reported by the PE device, where the connection establishment request includes information such as a source node, a source IP, and a destination IP;

Step S33, the controller searches the routing table according to the destination IP, finds the corresponding destination network element, and establishes a path between the source node and the destination node;

In this embodiment, the path may be an MPLS tunnel or an MPLS-TP tunnel.

Step S34, performing route advertisement between PEs with path connections;

In this step, the private network route learned between the PE and the CE is advertised to other remote PEs to implement a distributed routing protocol.

For example, PE1 learns the route of CE1 (which can be learned through dynamic routing protocol or static route configuration). The controller will advertise the route of PE1 to other PEs.

In this embodiment, if a tunnel connection is established between PE2 and PE1, the route between CE1 and PE2 needs to be advertised to each other. The controller advertises the route of CE1 learned by PE1 to PE2.

In step S35, the path establishment and the route advertisement are completed, and the connection between PE1 and PE2 is established.

The following describes the LTE base station service in the packet network and establishes the X2 service path between the base stations as needed. 10 is a schematic diagram of establishing an X2 service path between base stations according to an embodiment of the present invention. As shown in FIG. 10, there is a demand for east-west traffic between the base station 1 and the base station 2, but the bearer network does not establish a connection for the two base stations in advance. A path connection between the access PE1 and the access PE2 needs to be established by a service driver or a service request.

The process of establishing the service path in this embodiment includes:

Step S41: Configure the IP address of the interface that accesses the PE1, so that the IP address of the interface that accesses the PE1 and the IP address of the base station 1 are in the same network segment, and the IP address of the interface that accesses the PE2 is configured to enable the IP address of the interface connected to the PE2 and the IP address of the base station 2. On the same network segment;

Step S42, configuring a static route that accesses the PE1 to the base station 1, and configuring a static route that accesses the PE2 to the base station 2;

Step S43: The controller acquires routing information of all PEs of the entire network to form a global routing table.

In step S44, the base station 1 sends an IP packet to the base station 2, where the packet carries the IP address of the active IP (which is the base station 1) and the IP address of the destination IP (which is the base station 2);

In step S45, after the accessing PE1 receives the IP packet sent by the base station 1, the PE1 has only the route to the base station 1, and there is no route to the base station 2, and the routing table cannot be found. Therefore, the PE1 sends the IP packet to the PE1. To the service connection request reporting module;

Step S46: The service connection request reporting module that accesses the PE1 sends the service packet to the controller.

Step S47: After receiving the service packet reported by the PE1, the controller searches for the target network element to access the PE2 through the destination IP address, where the service packet includes the source IP address and the destination IP address.

In step S48, the controller establishes a tunnel from PE1 to PE2, and the tunnel adopts the shortest path, and does not need to bypass other nodes;

In step S49, the controller advertises routes between PE1 and PE2, so that PE1 obtains the route of the base station 2, and the PE2 also obtains the route of the base station 1.

The connection between the base station 1 and the base station 2 is established, and the service packets of the base station 1 to the base station 2 can be directly forwarded through the path without being sent to the controller.

It can be seen from the embodiment that the technical solution of the present application has a simple processing flow and strong operability, and has strong practical value in a packet network.

With the service path establishment mechanism of this embodiment, the service-driven on-demand path establishment can be implemented in the MPLS/MPLS-TP L3VPN network. The related service bearer mechanism is changed, that is, only the pre-established path can implement the service bearer mechanism of the service bearer. The technical solution of the embodiment implements the service-driven connection to achieve the effect of separating the service from the bearer, and greatly reduces the number of connections of the bearer network, improves network efficiency, and enables the operator to be more flexible, more accurate, and more Conveniently implement business operations.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

The embodiment of the invention further provides a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

Step S1: Receive a service sending request of the source serving edge network element, where the service sending request carries the first address identifier of the source user edge network element and the second address identifier of the target network element that are managed by the active serving edge network element;

Step S2: The service path between the source user edge network element and the target network element is established according to the global routing information, where the global routing information includes routing information of one or more service edge network elements.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor performs a service sending request of the source service edge network element according to the stored program code in the storage medium, where the service sending request carries the source of the active service edge network element. a first address identifier of the user edge network element and a second address identifier of the target network element;

Optionally, in this embodiment, the processor performs, according to the stored program code in the storage medium, the service path between the source user edge network element and the target network element according to the global routing information, where the global routing information includes one or Routing information of multiple service edge NEs.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device for execution by the computing device and, in some cases, may be performed in a different order than herein. The steps shown or described are either made separately into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the application is not limited to any particular hardware and software. Combine.

The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and various changes and modifications may be made to the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Industrial applicability

The technical solution solves the problem that the service path cannot be established according to the service driver in the related art, thereby reducing the network resource consumption, reducing the strong coupling between the bearer network and the wireless, and simplifying the network architecture.

Claims

A method for establishing a service path, the method comprising:

Receiving a service sending request of the source service edge network element, where the service sending request carries the first address identifier of the source user edge network element and the second address identifier of the target network element ;

Establishing a service path between the source user edge network element and the target network element according to the global routing information, where the global routing information includes routing information of one or more serving edge network elements.
The method according to claim 1, before the establishing a service path between the source user edge network element and the target network element according to the global routing information, the method further includes:

The routing information of the one or more serving edge network elements is obtained by at least one of the following methods: dynamic routing protocol learning, static routing configuration.
The method of claim 1, wherein the establishing a service path between the source user edge network element and the target network element according to global routing information comprises:

Searching for, by the first address identifier, a source serving edge network element connected to the source user edge network element from the global routing information, and establishing a relationship between the source serving edge network element and the source user edge network element First business path;

Establishing, according to the second address identifier, a second service path between the source serving edge network element and the target network element;

Determining, by the specified route of the first service path and the second service path, a service path between the source user edge network element and the target network element.
A method according to any one of claims 1 to 3, wherein:

The target network element includes: a target user edge device and/or a target service edge device.
The method of claim 3 wherein: said second traffic path comprises one of: a multi-label label switched MPLS tunnel and corresponding configuration information, a multi-label label switched transport application MPLS-TP tunnel and corresponding configuration information.
A device for establishing a service path, the device comprising:

a receiving module, configured to receive a service sending request of a source serving edge network element, where the industry The sending request carries the first address identifier of the source user edge network element and the second address identifier of the target network element that are vested by the source serving edge network element;

The establishing module is configured to establish a service path between the source user edge network element and the target network element according to the global routing information, where the global routing information includes routing information of one or more serving edge network elements.
The apparatus of claim 6 further comprising:

An acquiring module, configured to acquire the one or more service edges by using at least one of the following devices before the establishing module establishes a service path between the source user edge network element and the target network element according to the global routing information The routing information of the network element: dynamic routing protocol learning, static routing configuration.
The apparatus of claim 6 wherein the establishing module comprises:

a processing unit, configured to: search for a source serving edge network element connected to the source user edge network element from the global routing information according to the first address identifier, and establish the source serving edge network element and the source user The first service path between the edge network elements;

Establishing a unit, configured to establish, according to the second address identifier, a second service path between the source serving edge network element and the target network element;

And a determining unit, configured to determine that the specified route through the first service path and the second service path is a service path between the source user edge network element and the target network element.
A device according to any one of claims 6 to 8, wherein:

The target network element includes: a target user edge device and/or a target service edge device.
The apparatus of claim 8 wherein: said second traffic path comprises one of: a multi-label label switched MPLS tunnel and corresponding configuration information, a multi-label label switched transport application MPLS-TP tunnel and corresponding configuration information.
A system for establishing a service path, the system comprising:

Source service edge network element, controller, target network element, and source user edge network element;

The source service edge network element includes a reporting module, and the reporting module is configured to report a service sending request to the controller, where the service sending request carries the source service edge a first address identifier of the source user edge network element and a second address identifier of the target network element;

The controller is configured to establish a service path between the source user edge network element and the target network element according to global routing information, where the global routing information includes routing information of one or more service edge network elements .