CN103688510A

CN103688510A - Method and device for inter-network communication

Info

Publication number: CN103688510A
Application number: CN201380001875.7A
Authority: CN
Inventors: 李刚
Original assignee: Huawei Technologies Co Ltd
Current assignee: Shanghai Pengbang Industrial Co ltd
Priority date: 2013-09-13
Filing date: 2013-09-13
Publication date: 2014-03-26
Anticipated expiration: 2033-09-13
Also published as: CN103688510B; WO2015035616A1

Abstract

Embodiments of the present invention provide a method and a device for inter-network communication. The method comprises: a signaling path is built through a transmitted signaling protocol message to build a service path in which a second network is communicated with a third network across a first network, and service data achieves an end-to-end transmission process from the second network, across the first network and to the third network. In the transmission process, a second protocol is unnecessary for a network controller of the first network, so that singling cost of the network controller is reduced in the inter-network communication process, then performance requirements of the network controller are reduced, and cost is saved.

Description

Outgoing telecommunication method and device

Technical field

The embodiment of the present invention relates to the communication technology, relates in particular to a kind of outgoing telecommunication method and device.

Background technology

For meeting Internet protocol (Internet Protocol, IP) bandwidth demand that traffic growth produces, and the demand of the sudden and uncertain network dynamic bandwidth allocation bringing of IP operation, introduce general multiple protocols label exchange (Generalized Multi-Protocol Label Switching, GMPLS) agreement, to realize the dynamic management and control to network automatically.In addition, along with the development of current software defined network (Software Defined Network, SDN) technology, SDN network is obtained application widely.Yet; protection based on to existing investment, operator can not become SDN network by the whole GMPLS network rebuilding, but only part GMPLS network is preferentially disposed; the network construction form bringing is like this that subnetwork is traditional GMPLS network, and subnetwork is new SDN network.For guaranteeing the fluency of communication, need each network in networking to realize intercommunication.

In prior art, the agreement of using at the SDN of SDN network controller deploy GMPLS agreement and SDN network, as OpenFlow agreement, boundary node in SDN network reports SDN controller by the route messages of the GMPLS agreement receiving, signaling message etc., by SDN controller, process relevant GMPLS protocol message, thereby realize the intercommunication of each network in networking.

Yet in technique scheme, SDN controller, except the relevant information for the treatment of S DN network, must be processed GMPLS protocol message, Processing tasks is various, and high to the performance requirement of SDN controller, signaling consumption is large.

Summary of the invention

The embodiment of the present invention provides a kind of outgoing telecommunication method and device, to reduce in the process across communication, and the signaling consumption of network controller, and then reduce the performance requirement to network controller, cost-saving.

First aspect, the embodiment of the present invention provides a kind of outgoing telecommunication method, and the method comprises:

The first boundary node of first network receives the first path of second network transmission and sets up solicitation message, the routing iinformation that solicitation message is carried described second network to the three networks is set up in described the first path, described the first boundary node is connected with described second network, the second boundary node is connected with described the 3rd network, wherein, described first network is the network of the first agreement, the network that described second network and described the 3rd network are second protocol, described the first agreement and described second protocol are different agreements;

Described the first boundary node is set up solicitation message according to described the first path, builds the second path and sets up solicitation message;

Described the first boundary node sends described the second path to described the second boundary node and sets up solicitation message, so that the service path between the foundation of described the second boundary node and described the 3rd network;

Described the first boundary node receives the path of described the second boundary node transmission and sets up response message.

In the possible implementation of the first aspect first, after solicitation message is set up in the first path that described the first boundary node reception second network sends, described the first boundary node is set up solicitation message according to described the first path, and structure the second path also comprises before setting up solicitation message:

Described the first boundary node is set up solicitation message according to described the first path, determines described the second boundary node;

Described the first boundary node is to network controller path computation solicitation message, so that described network controller calculates and sets up described the first boundary node to the service path between described the second boundary node, the network controller that described network controller is described first network;

Described the first boundary node receives the path computing success response message that described network controller sends.

In the possible implementation of the second aspect first, described the first boundary node sends described the second path to described the second boundary node and sets up solicitation message, so that before the service path between described the second boundary node foundation and described the 3rd network, also comprise:

Described the first boundary node sends described the second path to described the second boundary node and sets up solicitation message, so that described the second boundary node is to described network controller path computation solicitation message, and then make described network controller calculate and set up described the first boundary node to the service path between described the second boundary node.

The first or the possible implementation of the second in conjunction with first aspect, first aspect, in the third the possible implementation aspect first, described the first boundary node is set up solicitation message according to described the first path, builds the second path and sets up solicitation message, comprising:

Described the first boundary node is set up solicitation message according to described the first path, and solicitation message is set up in the second path that builds described second protocol;

Described the first boundary node sends described the second path to described the second boundary node and sets up solicitation message, comprising:

Described the first boundary node directly sends described the second path to described the second boundary node and sets up solicitation message.

The first or the possible implementation of the second in conjunction with first aspect, first aspect, in the 4th kind of possible implementation aspect first, described the first boundary node is set up solicitation message according to described the first path, builds the second path and sets up solicitation message, comprising:

Described the first boundary node is set up solicitation message according to described the first path, and solicitation message is set up in the second path that builds described the first agreement;

Described the first boundary node sends described the second path by network controller to described the second boundary node and sets up solicitation message, the network controller that described network controller is described first network.

In conjunction with any possible implementation in four kinds of the first to the of first aspect, first aspect, in the 5th kind of possible implementation aspect first, described first network is software defined network, and described the first agreement is OpenFlow agreement;

The GMPLS Control network that described second network and described the 3rd network are different segment, the Border Gateway Protocol (BGP) network of different segment or the tag distribution protocol LDP network of different segment.

Second aspect, the embodiment of the present invention provides a kind of outgoing telecommunication method, comprising:

The network controller of first network receives the routing protocol message via the second network of the first boundary node transmission of described first network;

Described network controller inquiry reflection group, described routing protocol message is sent to the second boundary node, described reflection group at least comprises described the first boundary node and described the second boundary node, described the first boundary node is connected with described second network, described the second boundary node is connected with the 3rd network, and wherein, described first network is the network of the first agreement, the network that described second network and described the 3rd network are second protocol, described the first agreement and described second protocol are different agreements.

In the possible implementation of the first aspect second, the network controller of described first network also comprises before receiving the routing protocol message that the first boundary node of described first network sends:

Described network controller obtains reflection group information, and described reflective information comprises:

Boundary node group, described boundary node group comprises at least two boundary nodes in described first network;

The sign of described reflection group;

The group agreement of described reflection group, described group of agreement is for adding corresponding agreement after the protocol header of described the first agreement to described second protocol;

Described network controller, according to described reflection group information, configures described reflection group.

In conjunction with the possible implementation of the first of second aspect, in the possible implementation of the second aspect second, the method also comprises:

Described network controller is determined the reflection group under described the first boundary node;

According to the sign of described reflection group, each boundary node comprising to the boundary node group of the reflection group corresponding with described sign sends described reflection group information.

In conjunction with the possible implementation of the first of second aspect, in the third the possible implementation aspect second, the method also comprises:

Described network controller is inquired about described reflection group information and is determined described group of agreement;

Described network controller adds the protocol header of described the first agreement with the routing protocol message of generation group agreement to described routing protocol message;

Described network controller is sent to other boundary nodes except described the first boundary node in described boundary node group by the routing protocol message of described group of agreement.

In conjunction with the first, the second or the third possible implementation of second aspect, second aspect, the 4th kind of possible implementation aspect second, described first network is software defined network, described the first agreement is OpenFlow agreement;

The 3rd aspect, the embodiment of the present invention provides a kind of outgoing telecommunication device, comprising:

Receiver module, for receiving the first path of second network transmission, set up solicitation message, the routing iinformation that solicitation message is carried described second network to the three networks is set up in described the first path, described the first boundary node is connected with described second network, the second boundary node is connected with described the 3rd network, and wherein, described first network is the network of the first agreement, the network that described second network and described the 3rd network are second protocol, described the first agreement and described second protocol are different agreements;

Processing module, sets up solicitation message for described the first path receiving according to described receiver module, builds the second path and sets up solicitation message;

Sending module, sets up solicitation message for send described second path of described processing module structure to described the second boundary node, so that the service path between the foundation of described the second boundary node and described the 3rd network;

Described receiver module, also sets up response message for receiving the path of described the second boundary node transmission.

In the possible implementation of the first aspect the 3rd, described processing module, also, for setting up solicitation message according to described the first path, determines described the second boundary node;

Described sending module, also for to described network controller path computation solicitation message, so that described network controller calculates and set up described the first boundary node to the service path between described the second boundary node;

Described receiver module, the path computing success response message also sending for receiving described network controller.

The possible implementation of the second aspect the 3rd exists, described sending module, for sending described the second path to described the second boundary node, set up solicitation message, so that described the second boundary node is to described network controller path computation solicitation message, and then make described network controller calculate and set up described the first boundary node to the service path between described the second boundary node.

The first or the possible implementation of the second in conjunction with the 3rd aspect, the 3rd aspect, in the third possible implementation aspect the 3rd, described processing module, for setting up solicitation message according to described the first path, solicitation message is set up in the second path that builds described second protocol;

Described sending module, sets up solicitation message for directly sending described the second path to described the second boundary node.

The first or the possible implementation of the second in conjunction with the 3rd aspect, the 3rd aspect, in the 4th kind of possible implementation aspect the 3rd, described processing module, for setting up solicitation message according to described the first path, solicitation message is set up in the second path that builds described the first agreement;

Described sending module, sets up solicitation message, the network controller that described network controller is described first network for sending described the second path by network controller to described the second boundary node.

In conjunction with any possible implementation in four kinds of the first to the of the 3rd aspect, the 3rd aspect, in the 5th kind of possible implementation aspect the 3rd, described first network is software defined network, and described the first agreement is OpenFlow agreement;

The 4th aspect, the embodiment of the present invention provides a kind of outgoing telecommunication device, comprising:

Receiver module, the routing protocol message for reception via the second network of the first boundary node transmission of described first network;

Processing module, be used for inquiring about reflection group, described reflection group at least comprises described the first boundary node and described the second boundary node, described the first boundary node is connected with described second network, described the second boundary node is connected with the 3rd network, and wherein, described first network is the network of the first agreement, the network that described second network and described the 3rd network are second protocol, described the first agreement and described second protocol are different agreements;

Sending module, for being sent to described routing protocol message described the second boundary node.

In the possible implementation of the first aspect the 4th, described processing module, for obtaining described reflection group information, described reflective information comprises:

The sign of described reflection group;

According to described reflection group information, configure described reflection group.

In conjunction with the possible implementation of the first of the 4th aspect, in the possible implementation of the second aspect the 4th, described processing module, for determining the reflection group under described the first boundary node;

Described sending module, for according to the sign of described reflection group, each boundary node comprising to the boundary node group of the reflection group corresponding with described sign sends described reflection group information.

The possible implementation of the first in conjunction with the 4th aspect, in the third possible implementation aspect the 4th, described processing module, be used for inquiring about described reflection group information and determine described group of agreement, described routing protocol message is added to the protocol header of described the first agreement with the routing protocol message of generation group agreement;

Described sending module, for being sent to the routing protocol message of described group of agreement described boundary node group other boundary nodes except described the first boundary node.

In conjunction with the first, the second or the third possible implementation of the 4th aspect, the 4th aspect, the 4th kind of possible implementation aspect the 4th, described first network is software defined network, described the first agreement is OpenFlow agreement;

The 5th aspect, the embodiment of the present invention provides a kind of outgoing telecommunication device, comprise: processor and memory, described memory stores is carried out instruction, when described outgoing telecommunication device operation, between described processor and described memory, communicate by letter, described processor is carried out described execution instruction and is made described outgoing telecommunication device carry out any method in the cards in five kinds of the first to the of as above first aspect, first aspect.

The 6th aspect, the embodiment of the present invention provides a kind of outgoing telecommunication device, comprise: processor and memory, described memory stores is carried out instruction, when described outgoing telecommunication device operation, between described processor and described memory, communicate by letter, described processor is carried out described execution instruction and is made described outgoing telecommunication device carry out any method in the cards in four kinds of the first to the of as above second aspect, second aspect.

Outgoing telecommunication method and device that the embodiment of the present invention provides, thereby by command transmitting protocol message, carry out signaling road construction and set up second network across the service path of first network and the 3rd network service, realize business datum and can, according to service path, from second network, across first network, be delivered to the transmitting procedure end to end of the 3rd network.In this transmitting procedure, without the network controller deploy second protocol at first network, reduce in the process across communication, the signaling consumption of network controller, and then reduce the performance requirement to network controller, cost-saving.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the applicable first network configuration diagram of outgoing telecommunication method of the present invention;

Fig. 2 is the flow chart of outgoing telecommunication embodiment of the method one of the present invention;

Fig. 3 is the applicable second network configuration diagram of outgoing telecommunication method of the present invention;

Fig. 4 is the signaling diagram of outgoing telecommunication embodiment of the method two of the present invention;

Fig. 5 is the signaling diagram of outgoing telecommunication embodiment of the method three of the present invention;

Fig. 6 is the flow chart of outgoing telecommunication embodiment tetra-of the present invention;

Fig. 7 is the signaling diagram of outgoing telecommunication embodiment of the method five of the present invention;

Fig. 8 is the structural representation of outgoing telecommunication device embodiment mono-of the present invention;

Fig. 9 is the structural representation of outgoing telecommunication device embodiment bis-of the present invention;

Figure 10 is the structural representation of outgoing telecommunication device embodiment tri-of the present invention;

Figure 11 is the structural representation of outgoing telecommunication device embodiment tetra-of the present invention.

Embodiment

For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Fig. 1 is the applicable first network configuration diagram of outgoing telecommunication method of the present invention.As shown in Figure 1, networking comprises first network, second network and the 3rd network, first network has boundary node A, B, C and intermediate node H, second network has node D, E, the 3rd network has node G, F, wherein, node refers to data, signaling etc. to have the function device of processing, forwarding or other operations, as router, switch etc.The boundary node A of first network is connected with node D, the E of second network, the boundary node B of first network is connected with the node G of the 3rd network, the boundary node C of first network is connected with the node F of the 3rd network, and the node of the inside of each network interconnects, as shown in solid line in figure.In addition, first network has at least one network controller, and this network controller is connected with boundary node A, B, the C of first network, as shown in phantom in FIG..

In Fig. 1, first network is the network of the first agreement, the network that second network and the 3rd network are second protocol, and the first agreement and second protocol are different agreements.For example, first network is the network based on OpenFlow, and second network and the 3rd network are GMPLS network.Network architecture schematic diagram based on shown in Fig. 1, the invention provides a kind of second network across the method for first network and the 3rd network service, or, the method that the 3rd network is communicated by letter with second network across first network, second network and the 3rd network are only comparatively speaking, there is no strict differentiation.

Fig. 2 is the flow chart of outgoing telecommunication embodiment of the method one of the present invention.Referring to Fig. 1, the executive agent of the present embodiment is boundary node, be applicable to when second network is during across first network and the 3rd network service, command transmitting protocol message is to carry out the scene of signaling road construction, wherein, the procotol of the first agreement and the procotol of second protocol on boundary node, have been disposed simultaneously.Concrete, the present embodiment comprises the steps:

101, solicitation message is set up in the first path that the first boundary node reception second network of first network sends, the routing iinformation that solicitation message is carried second network to the three networks is set up in the first path, the first boundary node is connected with second network, the second boundary node is connected with the 3rd network, wherein, first network is the network of the first agreement, the network that second network and the 3rd network are second protocol, and the first agreement and second protocol are different agreements.

Referring to Fig. 1, in the present embodiment, suppose that the node D of second network, based on global traffic engineering data base etc., calculates to such an extent that service path is D-A-B-G.Hence one can see that, for first network, and source boundary node, the first boundary node is A, object boundary node, the second boundary node is B.The node D of second network sends the first path to the first boundary node A and sets up solicitation message, this first path is set up solicitation message and is carried the routing iinformation between the node G of node D to the three networks of second network, such as relevant routing iinformation of service path D-A-B-G etc.If first network is SDN network, second network is GMPLS network, with resource reservation (the Resource Reservation Protocol-Traffic Engineering of traffic engineering, RSVP-TE) to set up the routing iinformation carrying in solicitation message can be the object that shows paths (Explicit Route Object, ERO) information in the first path of agreement.

102, the first boundary node is set up solicitation message according to the first path, builds the second path and sets up solicitation message.

When receiving the first path, sets up after solicitation message the first boundary node A, the routing iinformation relevant according to service path D-A-B-G, as the ERO information of RSVP-TE, determining down hop is the second boundary Node B, build the second path and set up solicitation message, and prepare to send this second path to the second boundary Node B and set up solicitation message.

103, the first boundary node sends the second path to the second boundary node and sets up solicitation message, so that the service path between the foundation of the second boundary node and the 3rd network.

Set up after solicitation message constructing the second path, service path based between the first boundary node A and the second boundary Node B, for example, default service path, or, the service path that calculates and set up by network controller, the first boundary node A sends the second path to the second boundary Node B and sets up solicitation message, make the routing iinformation that the second boundary node is relevant according to service path D-A-B-G, determining down hop is the node G of the 3rd network, the second boundary Node B and node G carry out information interaction, set up the service path between the second boundary Node B and node G.

104, response message is set up in the path that the first boundary node reception the second boundary node sends.

After the service path of having set up between the second boundary Node B and node G, the node G of the 3rd network sets up response message to the second boundary Node B transmit path, make the second boundary Node B send this path to the first boundary node A and set up response message, finally make the first boundary node A that the node D that response message is sent to second network is set up in this path.When path is set up response message and is passed to the node D of second network from the node G of the 3rd network, show successfully to have set up service path D-A-B-G end to end, thereby realize business datum and can, according to service path, from second network, across first network, be delivered to the routing procedure end to end of the 3rd network.

The outgoing telecommunication method that the embodiment of the present invention provides, thereby by command transmitting protocol message, carry out signaling road construction and set up second network across the service path of first network and the 3rd network service, realize business datum and can, according to service path, from second network, across first network, be delivered to the transmitting procedure end to end of the 3rd network.In this transmitting procedure, without the network controller deploy second protocol at first network, reduce in the process across communication, the signaling consumption of network controller, and then reduce the performance requirement to network controller, cost-saving.

Further, in above-described embodiment one, if the service path of the Non-precondition between the first boundary node A and the second boundary Node B, source boundary node, the first boundary node A can calculate and set up the service path between the first boundary node A and the second boundary Node B by trigger network controller, be that the first boundary node A of first network receives after the first path that second network sends sets up solicitation message, according to the first path, set up solicitation message, before solicitation message is set up in the second path that builds the first agreement, the first boundary node is set up solicitation message according to the first path, determine the second boundary node, the first boundary node is to network controller path computation solicitation message, so that network controller calculates and sets up the first boundary node to the service path between the second boundary node, wherein, path computing solicitation message is carried service attribute requirement, service attribute requires to set up for meeting path that second network sends over the attribute specification of the business of carrying in solicitation message, for example, bandwidth is 10M, and network controller just need to be set up the path that bandwidth is 10M between the first boundary node A and the second boundary Node B, the first boundary node receives the path computing success response message that network controller sends.

Further, in above-described embodiment one, if the service path of the Non-precondition between the first boundary node A and the second boundary Node B, object boundary node, be that the service path between the first boundary node A and the second boundary Node B be calculated and be set up to the second boundary Node B can by trigger network controller, the first boundary node A sets up solicitation message according to the first path and constructs after the second path sets up solicitation message, to the second boundary Node B, send before the second path sets up solicitation message, the first boundary node A sends this second path to the second boundary Node B and sets up solicitation message, so that the second boundary Node B is to network controller path computation solicitation message, and then network controller is calculated and set up the first boundary node A to the service path between the second boundary Node B.

Further, in above-described embodiment one, if there is the path that directly can reach between the first boundary node A and the second boundary Node B, for example, default or process configures between known the first boundary node A and the second boundary Node B and has direct path, the first boundary node A sets up solicitation message according to the first path, and solicitation message is set up in the second path that builds second protocol, directly to the second boundary Node B, sends the second path and sets up solicitation message; Or the first boundary node A also can not send the second path by the path that directly can reach to the second boundary Node B and set up solicitation message, sets up solicitation message but send the second path by network controller to the second boundary node.

Further, in above-described embodiment one, if there is not the path that directly can reach between the first boundary node A and the second boundary Node B, need to pass through network controller transmitting signaling, data etc., now, the first boundary node A sets up solicitation message according to the first path, and solicitation message is set up in the second path that builds the first agreement, and by network controller, to the second boundary node, sends the second path and set up solicitation message.

Fig. 3 is the applicable second network configuration diagram of outgoing telecommunication method of the present invention.As shown in Figure 3, in the present embodiment, first network is specially SDN network, second network is specially GMPLS network S, the 3rd network is specially GMPLS network D, the first agreement is OpenFlow agreement, and second protocol is the GMPLS agreements such as resource reservation (Resource Reservation Protocol-Traffic Engineering, RSVP-TE) with traffic engineering.Concrete, SDN network has boundary node A, B, C and intermediate node H, and GMPLS network S has node D, E, and GMPLS network has node G, F.The boundary node A of SDN network is connected with node D, the E of GMPLS network S, and the boundary node B of SDN network is connected with node G, the F of GMPLS network D, and the node of the inside of each network interconnects, as shown in solid line in figure.In addition, SDN network has at least one SDN controller, and this SDN controller is connected with boundary node A, B, the C of SDN network, as shown in phantom in FIG..Wherein, Adoption Network node interface (Network Node Interface between boundary node A and node D or E, between boundary node C and node F, between boundary node B and node G, NNI), internal network interface (Internal Network-Network Interface, INNI) or the interface such as external network interface (External Network-Network Interface, ENNI).

As shown in Figure 3, boundary node A, B, C deploy OpenFlow agreement and GMPLS related protocol, intermediate node H is upper without disposing GMPLS related protocol.SDN controller with on boundary node A, B and C, configured reflection group: the agreement that this reflection group is used is OpenFlow type of message corresponding to RSVP-TE agreement, the protocol package that even SDN controller receives is the RSVP-TE protocol package of having added OpenFlow message header, can identify RSVP-TE protocol package wherein; Reflection group be designated 1, reflection group membership be boundary node A, B and C.In addition, also can on SDN controller, configure after reflection group, the information of reflection group is sent to boundary node A, B and C, make the upper configuration of boundary node A, B and C reflection group.

Below, the GMPLS network S of take is example across SDN network to GMPLS network D transmission RSVP-TE protocol message, the present invention will be described in detail.Concrete, please refer to Fig. 4, Fig. 4 is the signaling diagram of outgoing telecommunication embodiment of the method two of the present invention.

Referring to Fig. 3 and Fig. 4, the embodiment of the present invention comprises the steps:

200, the node D computing service path of GMPLS network.

D node is based on global traffic project data, and the service path that calculates layering service providing program (Layered Service Provider, LSP) is D-A-B-G.For SDN network, the first boundary node is boundary node A, and the second boundary node is boundary node B.

201, solicitation message is set up in the first path that node D sends RSVP-TE agreement to the first boundary node A.

In this step, the node D of GMPLS network S, solicitation message is set up in the first path that sends RSVP-TE agreement to the first boundary node A, and this first path is set up solicitation message and is carried the relevant information that service path is D-A-B-G, as the ERO information of RSVP-TE.

202, the first boundary node A replys acknowledge message to node D.

In this step, the first boundary node A receives the first path and sets up after solicitation message, and solicitation message is set up in this first path of dissection process, and returns to acknowledge message to the node D of second network.

203, the first boundary node A is to SDN controller path computation solicitation message.

In this step, the first boundary node A sets up solicitation message based on the first path, after learning out that next node is boundary node B, to SDN controller path computation solicitation message, request SDN controller calculates and sets up the first boundary node A to the service path between the second boundary Node B.

Optionally, in path computing solicitation message, carry path attribute information, bandwidth condition as satisfied in the path of A-B etc., make SDN controller according to path attribute information, calculate the path satisfying condition.

204, SDN controller calculates and sets up the path between A-B.

In this step, SDN controller computation bound node A is to the path between boundary node B, and the path of calculating gained need to meet relevant path attribute information, then drives and install the path of calculating gained.For example, the path of finally determining is A-H-B.

205, SDN controller is to the first boundary node A path computation response message.

In this step, if SDN controller calculates and sets up between A-B, there is the path that meets path data information, to the first boundary node A, send the path computing response message that indication path is successfully established; Otherwise, to the first boundary node A, send indication path and set up failed path computing failed message (not shown).

206, the first boundary node A builds the second path and sets up solicitation message.

In this step, the first boundary node A receives SDN controller and successfully sets up after the path computing response message in path, based on the first path computing solicitation message, build the second path and set up solicitation message, and prepare to send this second path to the second boundary Node B and set up solicitation message.

Optionally, in this step, if there is the control path that directly can reach between the first boundary node A and the second boundary Node B, according to the first path, set up solicitation message, solicitation message is set up in the second path that builds RSVP-TE agreement, and directly to the second boundary Node B, sends this second path and set up solicitation message; Or the first boundary node A also can not send the second path by the path that directly can reach to the second boundary Node B and set up solicitation message, sets up solicitation message but send the second path by network controller to the second boundary node.。

Optionally, in this step, if there is not the control path that directly can reach between the first boundary node A and the second boundary Node B, need to be forwarded by SDN controller, the first boundary node is set up solicitation message interpolation OpenFlow protocol message head to the first path, solicitation message is set up in the second path that builds OpenFlow agreement, and the length of this message is that the length of solicitation message and the length sum of OpenFlow protocol message head are set up in the first path of RSVP-TE agreement.

207, the first boundary node A sends the second path to SDN network controller and sets up solicitation message.

208, SDN controller reflects the second path and sets up solicitation message.

SDN controller receives the second path of OpenFlow agreement and sets up after solicitation message, according to type of message and message source, i.e. the first boundary node A, inquiry reflection group, obtain the information of other boundary nodes except the first boundary node A in reflection group, so other boundary nodes (for example the second boundary Node B) in boundary node group corresponding to retroreflection group send this second path and set up solicitation message.

209, the second boundary Node B sends acknowledge message to the first boundary node A.

In this step, the second boundary Node B is peeled off protocol message head, according to RSVP-TE protocol processes.

Concrete, this step comprises following sub-step:

2091, the second boundary Node B sends acknowledge message to SDN network controller;

The acknowledge message encapsulation OpenFlow protocol message head of the second boundary Node B to RSVP-TE, and send to SDN controller.

2092, SDN network controller sends acknowledge message to the first boundary node A.

210, the second boundary Node B is to node G path computation solicitation message.

The second boundary Node B is resolved the second path and is set up solicitation message, and after determining next node and being the node G of the 3rd network, solicitation message is set up in the path that sends RSVP-TE agreement to node G.

211, node G sets up response message to the second boundary Node B transmit path.

In this step, node G receives path and sets up after response message, according to the protocol processes of the RSVP-TE of conventional GMPLS, behind the path between calculating and the second boundary Node B, to the second boundary Node B transmit path, sets up response message.

212, the second boundary Node B is set up response message to the first boundary node A transmit path.

In this step, the second boundary node prize path is set up after the upper OpenFlow protocol message head of response message encapsulation, by SDN network controller, to the first boundary node A, sends.Concrete, this step comprises following sub-step:

2121, the second boundary Node B is set up response message to SDN network controller transmit path;

2122, SDN network controller is set up response message to the first boundary node A transmit path.

213, the first boundary node A sets up response message to node D transmit path.

In this step, the first boundary node A peels off OpenFlow protocol message head, and the path that builds RSVP-TE agreement is set up response message and sends to node D.When path is set up response message and is passed to the node D of second network from the node G of the 3rd network, show successfully to have set up service path D-A-B-G end to end, thereby realize business datum and can, according to service path, from second network, across first network, be delivered to the routing procedure end to end of the 3rd network.

It should be noted that, in above-described embodiment, before response message is set up in the path that the first boundary node A sends at the node G that receives the 3rd network, first to SDN controller path computation solicitation message, to calculate and to set up the path between the first boundary node A and the second boundary Node B in SDN network, build again the second path computing solicitation message and send to the second boundary Node B, make the second boundary Node B set up solicitation message to set up the path between the second boundary Node B of SDN network and the node G of the 3rd network to the boundary node G transmit path of the 3rd network, first perform step 203～205, perform step again 206～212.Yet, the present invention is not as restriction, in other possible execution modes, also can be that the first boundary node A first builds the second path computing solicitation message and sends to the second boundary Node B, make the second boundary Node B reply acknowledge message and set up solicitation message to set up the path between the second boundary Node B of SDN network and the node G of the 3rd network to the node G transmit path of the 3rd network, again to SDN controller path computation solicitation message, to calculate and to set up the path between the first boundary node A and the second boundary Node B in SDN network, first perform step 206～212, the path that the node G that makes the first boundary node A receive the 3rd network sends through the second boundary Node B is set up after response message, perform step again 203～205 to set up the path between the first boundary node A and the second boundary Node B in SDN network.

In above-mentioned Fig. 4 embodiment, be with source boundary node, the first boundary node A triggers SDN controller to calculate the first boundary node A is that the present invention will be described in detail for example to the path between the second boundary Node B.Yet the present invention, not as restriction, in other possible execution modes, can be also object boundary node, the second boundary Node B triggers SDN controller and calculates the first boundary node A to the path between the second boundary Node B.Concrete, please refer to Fig. 5.

Fig. 5 is the signaling diagram of outgoing telecommunication embodiment of the method three of the present invention.Referring to Fig. 3 and Fig. 5, the embodiment of the present invention comprises the steps:

300, the node D computing service path of GMPLS network.

301, node D sends the first path to the first boundary node A and sets up solicitation message.

302, the first boundary node A replys acknowledge message to node D.

Above-mentioned steps 300～302, specifically step 200～202 as shown in Figure 4 repeat no more herein.

303, the first boundary node A sends the second path to the second boundary Node B and sets up solicitation message.

Concrete, this step comprises following sub-step:

3031, the first boundary node A sends the second path to SDN controller and sets up solicitation message;

The first boundary node A resolves the first path computing solicitation message, and to determine next node be B, the first path computing solicitation message added to OpenFlow protocol message head and build the second path and set up after solicitation message, to SDN network controller, sends.

3032, SDN network controller sends the second path to the second boundary Node B and sets up solicitation message.

304, the second boundary Node B sends acknowledge message to the first boundary node A.

The second boundary Node B receives the second path of SDN controller transmission and sets up after solicitation message, peels off OpenFlow protocol message head, and processes with RSVP-TE agreement.Concrete, this step comprises the steps:

3041, the second boundary Node B sends acknowledge message to SDN controller.

The second boundary Node B generates acknowledge message after the second path is set up solicitation message and processed, to after acknowledge message encapsulation OpenFlow protocol message head and send to SDN controller.

3042, SDN controller sends acknowledge message to the first boundary node A.

305, the second boundary Node B is to SDN controller path computation solicitation message.

In this step, the second boundary Node B is set up solicitation message based on the second path, learn out that a node is boundary node A, if not default the first boundary node A is to the path between the second boundary Node B,, to SDN controller path computation solicitation message, request SDN controller calculates and sets up the first boundary node A to the path between the second boundary Node B.

306, SDN controller calculates and sets up the path between A-B.

Concrete, can, referring to above-mentioned Fig. 4 step 204, repeat no more herein.

307, SDN controller is to the second boundary Node B path computation response message.

In this step, if SDN controller has calculated and set up between A-B, there is the path that meets path data information, to the second boundary Node B, send the path computing response message that indication path is successfully established; Otherwise, to the second boundary Node B, send indication path and set up failed path computing failed message (not shown).

308, the second boundary Node B is set up solicitation message to node G transmit path.

309, node G sets up response message to the second boundary Node B transmit path.

310, the second boundary Node B is set up response message to the first boundary node A transmit path.

3101, the second boundary Node B is set up response message to SDN network controller transmit path;

3102, SDN network controller is set up response message to the first boundary node A transmit path.

311, the first boundary node A sets up response message to node D transmit path.

In this step, the first boundary node A peels off OpenFlow protocol message head, and the path that builds RSVP-TE agreement is set up response message and sends to node G.When path is set up response message and is passed to the node D of second network from the node G of the 3rd network, show successfully to have set up service path D-A-B-G end to end, thereby realize business datum and can, according to service path, from second network, across first network, be delivered to the routing procedure end to end of the 3rd network.

It should be noted that, in above-described embodiment, the second boundary Node B is first to SDN controller path computation solicitation message, to calculate in SDN network, path between the first boundary node A and the second boundary Node B, by the second boundary Node B, to the node G transmit path of second network, set up solicitation message to set up the path between the second boundary Node B of SDN network and the node G of the 3rd network again, first perform step 305～307, then perform step 308～309.Yet, the present invention is not as restriction, in other possible execution modes, also can be that the second boundary Node B is first set up solicitation message to set up the path between the second boundary Node B of SDN network and the node G of the 3rd network to the node G transmit path of the 3rd network, again to SDN controller path computation solicitation message, with the path between the first boundary node A and the second boundary Node B in calculating SDN network, after step 304, first perform step 308～309, the path that the node G that makes the second boundary Node B receive the 3rd network sends is set up after response message, perform step again 305～307 to set up the path between the first boundary node A and the second boundary Node B in SDN network.

Fig. 6 is the flow chart of outgoing telecommunication embodiment tetra-of the present invention.Referring to Fig. 1, the executive agent of the present embodiment is network controller, is applicable to when second network is during across first network and the 3rd network service the scene of transmission route protocol message.Concrete, the present embodiment comprises the steps:

401, the reception of the network controller of first network is via the routing protocol message of the second network of the first boundary node transmission of first network.

In this step, the first boundary node of first network receives the routing protocol message of the node transmission of coupled second network, for example carry the ospf with traffic engineering (Open Shortest Path First Interior Gateway Protocol-Traffic Engineering, the OSPF-TE) routing protocol message of traffic engineering data message.Please refer to Fig. 1, the first boundary node A of first network is connected with node D or the E of second network, and the routing protocol message that the first boundary node A receiving node D sends also sends to network controller.

402, network controller inquiry reflection group, routing protocol message is sent to the second boundary node, reflection group at least comprises the first boundary node and the second boundary node, the first boundary node is connected with second network, the second boundary node is connected with the 3rd network, and wherein, first network is the network of the first agreement, the network that second network and the 3rd network are second protocol, the first agreement and second protocol are different agreements.

Can pre-configured reflection group on network controller, reflection group refers to using each border group of first network as complete or collected works, and some boundary node is wherein divided into after a group, gets subset in complete or collected works as a reflection group.Controller receives after the routing protocol message or other message of certain boundary node transmission in a reflection group, and other boundary nodes in this reflection group reflect this message.In this step, the boundary node in reflection group at least comprises the second boundary Node B that the first boundary node A of being connected with second network is connected with second network.When network controller receives after the routing protocol message of the first boundary node A transmission, according to the first boundary node A, inquire about other boundary nodes in the reflection group at the first boundary node A place, then routing protocol message is sent to other boundary nodes except the first boundary node A in reflection group, the second boundary Node B for example, thereby the routing iinformation of second network is transferred to the 3rd network, make the 3rd network can be according to the routing iinformation of second network and first network etc., calculate the routed path of business transmission.

The outgoing telecommunication method that the embodiment of the present invention provides, by transmission route protocol message, the routing iinformation of first network is transferred to the 3rd network via first network, realize routing iinformation and from second network, across first network, be delivered to the transmitting procedure end to end of the 3rd network.In this transmitting procedure, without the network controller deploy second protocol at first network, reduce in the process across communication, the signaling consumption of network controller, and then reduce the performance requirement to network controller, cost-saving.

Further, in above-described embodiment four, if do not configure in advance reflection group on network controller, before the routing protocol message that the first boundary node of network controller reception first network sends, need to obtain reflection group information, reflective information comprises: boundary node group, and boundary node group comprises at least two boundary nodes in first network; The sign of reflection group; The group agreement of reflection group, group agreement is for adding corresponding agreement after the protocol header of the first agreement to second protocol; Network controller is organized information according to reflection, configuration reflection group.

Concrete, network controller can be according to default rule etc., each boundary node group in first network is divided to different groups, each group is referred to as reflection group, network controller obtains each reflection and organizes corresponding reflection group information, and reflection group information comprises: the group agreement that comprises the boundary node group of at least two boundary nodes, the sign of reflection group and reflection group.Wherein, it is that second protocol is added to corresponding agreement after the protocol header of the first agreement that the group agreement of reflection group can be understood as, the protocol package that even SDN controller receives is the protocol package of having added the second protocol of the first protocol message head, through resolving the protocol package that can identify the first agreement wherein.After getting reflection group information, network controller is organized information according to reflection, configuration reflection group.

Further, in above-described embodiment four, network controller is determined the reflection group under the first boundary node, and according to the sign of reflection group, each boundary node comprising to the boundary node group with identifying corresponding reflection group sends reflection group information.

Further, in above-described embodiment four, network controller inquiry reflection group information is organized protocol network controller to routing protocol message being added to the protocol header of the first agreement with the routing protocol message of generation group agreement to determine, and the routing protocol message of group agreement is sent to other boundary nodes except the first boundary node in boundary node group.

Fig. 4 and Fig. 5 embodiment are across first network, to the 3rd Internet Transmission signaling protocol message, to be that the present invention is described in detail for example from second network.From second network, across first network, to the angle of the 3rd Internet Transmission routing protocol message, the present invention is described in detail below.Concrete, please refer to Fig. 7, Fig. 7 is the signaling diagram of outgoing telecommunication embodiment of the method five of the present invention.

Referring to Fig. 3 and Fig. 7, boundary node A, the B of first network, C deploy OpenFlow agreement and GMPLS related protocol, intermediate node H is upper without disposing GMPLS related protocol.SDN controller with on boundary node A, B and C, configured reflection group: the agreement that this reflection group is used is OpenFlow type of message corresponding to OSPF-TE agreement, the protocol package that even SDN controller receives is the OSPF-TE protocol package of having added OpenFlow message header, can identify OSPF-TE protocol package wherein; Reflection group be designated 2, reflection group membership be boundary node A, B and C.In addition, also can on SDN controller, configure after reflection group, the information of reflection group is sent to boundary node A, B and C, make the upper configuration of boundary node A, B and C reflection group.The present embodiment comprises the steps:

501, the node D of GMPLS network S sends OSPF-TE message to the first boundary node A of SDN network.

In this step, the node D of GMPLS network S sends OSPF-TE message to the first coupled boundary node A.

502, the first boundary node A inquiry reflection group.

In this step, traffic engineering data in the first boundary node A extraction OSPF-TE message are herein in local traffic engineering database, and inquire about reflection group, identify the reflection group that the first boundary node A is corresponding, find other boundary nodes, thereby next node of determining this OSPF-TE message is other boundary nodes that go out in reflection group outside the first boundary node A.

503, the first boundary node A structure group protocol message.

In this step, the first boundary node A adds OpenFlow protocol message head to OSPF-TE message, thereby constructs group protocol message, for example:

Wherein, type of message is OF_OSPF_TE, and message-length is that OSPF-TE packet length information adds OPENFLOW message header length.

504, the first boundary node A is sent to SDN controller by group protocol message.

505, SDN controller reflection group protocol message.

In this step, SDN controller receives after OpenFlow protocol message, discovery is group protocol message, according to the first boundary node A, confirm reflection group corresponding to this first boundary node A, determine other boundary nodes in reflection group, thereby in reflection group, go out other boundary nodes outside the first boundary node A, for example the second boundary Node B transmission group protocol message.

506, the traffic engineering data of the second boundary Node B storage GMPLS network S.

In this step, the second boundary Node B receives after group protocol message, peels off OpenFlow protocol message head, obtains OSPF-TE message, this OSPF-TE message is processed to traffic engineering data the storage that obtains SDN network.

507, the second boundary Node B inundation OSPF-TE message.

In this step, the second boundary Node B can the node to GMPLS network D spread OSPF-TE message, thereby realizes by the traffic engineering data of GMPLS network S the GMPLS network D across SDN network inundation.

In above-mentioned routing protocol message transmitting procedure, the routing protocol message of GMPLS network S across SDN Internet Transmission to GMPLS network D, below, the process to the route messages between the first boundary node A and the second boundary Node B in SDN network to GMPLS network D transmission describes.

When transmit between the first boundary node A and the second boundary Node B route messages time, information query the first boundary node A that the first boundary node A sends OpenFlow agreement to SDN controller is to spendable bandwidth between the second boundary Node B, the traffic engineering data such as total bandwidth, SDN network controller receives after query messages, calculate the first boundary node A to the path between the second boundary Node B, the traffic engineering data of calculating gained are sent to the first boundary node A, the first boundary node A storage flow project data, traffic engineering data are packaged as to OSPF-TE message, and encapsulate OpenFlow protocol message head construct group protocol message after, execution step 504, thereby transfer to GMPLS network D by realizing the route messages that carries traffic engineering data in SDN network.

It should be noted that, above-mentioned Fig. 4, Fig. 5 and Fig. 7 embodiment all be take first network, and as SDN network, second network and the 3rd network, as GMPLS network as example, the present invention is described in detail, yet, the present invention is not as restriction, in other feasible execution modes, second network and the 3rd network can also be the networks of border gateway protocol (Border Gateway Protocol, BGP), now, SDN network controller is without supporting bgp protocol; Or second network and the 3rd network can be also the networks that adopts tag distribution protocol (Label Distribution Protocol, LDP), now, SDN network controller is without supporting LDP agreement.

Fig. 8 is the structural representation of outgoing telecommunication device embodiment mono-of the present invention.The outgoing telecommunication device that the present embodiment provides, can be arranged on boundary node, can be also boundary node itself, is the device embodiment corresponding with Fig. 2 embodiment of the present invention, and specific implementation process does not repeat them here.Concrete, the outgoing telecommunication device 100 that the present embodiment provides specifically comprises:

Receiver module 11, for receiving the first path of second network transmission, set up solicitation message, the routing iinformation that solicitation message is carried described second network to the three networks is set up in described the first path, described the first boundary node is connected with described second network, the second boundary node is connected with described the 3rd network, and wherein, described first network is the network of the first agreement, the network that described second network and described the 3rd network are second protocol, described the first agreement and described second protocol are different agreements;

Processing module 12, sets up solicitation message for the first path receiving according to receiver module 11, builds the second path and sets up solicitation message;

Sending module 13, sets up solicitation message for the second path building to the second boundary node transmission processing module 12, so that the service path between the foundation of the second boundary node and the 3rd network;

Receiver module 11, also sets up response message for receiving the path of the second boundary node transmission.

The outgoing telecommunication device that the embodiment of the present invention provides, thereby by command transmitting protocol message, carry out signaling road construction and set up second network across the service path of first network and the 3rd network service, realize business datum and can, according to service path, from second network, across first network, be delivered to the transmitting procedure end to end of the 3rd network.In this transmitting procedure, without the network controller deploy second protocol at first network, reduce in the process across communication, the signaling consumption of network controller, and then reduce the performance requirement to network controller, cost-saving.

Further, processing module 12, also, for setting up solicitation message according to the first path, determines the second boundary node;

Sending module 13, also for to described network controller path computation solicitation message, so that described network controller calculates and set up described the first boundary node to the service path between described the second boundary node;

Receiver module 11, the path computing success response message also sending for receiving network controller.

Further, sending module 13, for sending described the second path to described the second boundary node, set up solicitation message, so that described the second boundary node is to described network controller path computation solicitation message, and then make described network controller calculate and set up described the first boundary node to the service path between described the second boundary node.

Further, processing module 12, for setting up solicitation message according to described the first path, solicitation message is set up in the second path that builds described second protocol;

Sending module 13, sets up solicitation message for directly sending described the second path to described the second boundary node.

Further, processing module 12, for setting up solicitation message according to described the first path, solicitation message is set up in the second path that builds described the first agreement;

Sending module 13, sets up solicitation message, the network controller that described network controller is described first network for sending described the second path by network controller to described the second boundary node.

Further, first network is software defined network, and the first agreement is OpenFlow agreement; The GMPLS Control network that described second network and described the 3rd network are different segment, the Border Gateway Protocol (BGP) network of different segment or the tag distribution protocol LDP network of different segment.

Fig. 9 is the structural representation of outgoing telecommunication device embodiment bis-of the present invention.The outgoing telecommunication device that the present embodiment provides, can be arranged on boundary node, can be also boundary node itself, is the device embodiment corresponding with Fig. 6 embodiment of the present invention, and specific implementation process does not repeat them here.Concrete, the outgoing telecommunication device 200 that the present embodiment provides specifically comprises:

Receiver module 21, the routing protocol message for reception via the second network of the first boundary node transmission of described first network;

Processing module 22, be used for inquiring about reflection group, described reflection group at least comprises described the first boundary node and described the second boundary node, described the first boundary node is connected with described second network, described the second boundary node is connected with the 3rd network, and wherein, described first network is the network of the first agreement, the network that described second network and described the 3rd network are second protocol, described the first agreement and described second protocol are different agreements;

Sending module 23, for being sent to described routing protocol message described the second boundary node.

The outgoing telecommunication device that the embodiment of the present invention provides, by transmission route protocol message, the routing iinformation of first network is transferred to the 3rd network via first network, realize routing iinformation and from second network, across first network, be delivered to the transmitting procedure end to end of the 3rd network.In this transmitting procedure, without the network controller deploy second protocol at first network, reduce in the process across communication, the signaling consumption of network controller, and then reduce the performance requirement to network controller, cost-saving.

Further, processing module 22, for obtaining reflection group information, reflective information comprises:

The sign of described reflection group;

Processing module 22, also, for according to reflection group information, configures reflection group.

Further, processing module 22, for the reflection group under definite described the first boundary node;

Sending module 23, for according to the sign of described reflection group, each boundary node comprising to the boundary node group of the reflection group corresponding with described sign sends described reflection group information.

Further, processing module 22, determines described group of agreement for inquiring about described reflection group information, described routing protocol message is added to the protocol header of described the first agreement with the routing protocol message of generation group agreement;

Sending module 23, for being sent to the routing protocol message of described group of agreement described boundary node group other boundary nodes except described the first boundary node.

Further, first network is software defined network, and the first agreement is GMPLS Control network, the Border Gateway Protocol (BGP) network of different segment or the tag distribution protocol LDP network of different segment that second network and described the 3rd network are different segment described in OpenFlow agreement.

Figure 10 is the structural representation of outgoing telecommunication device embodiment tri-of the present invention.The outgoing telecommunication device that the present embodiment provides, can be arranged on boundary node, can be also boundary node itself, is the device embodiment corresponding with Fig. 2 embodiment of the present invention, and specific implementation process does not repeat them here.Concrete, the outgoing telecommunication device 300 that the present embodiment provides specifically comprises:

Processor 31 and memory 32, instruction is carried out in memory 32 storages, when 300 operation of outgoing telecommunication device, between processor 31 and memory 32, communicate by letter, processor 31 is carried out the embodiment of the method that instruction is carried out as shown in Figure 2 outgoing telecommunication device 300, it realizes principle and technique effect is similar, repeats no more herein.

Figure 11 is the structural representation of outgoing telecommunication device embodiment tetra-of the present invention.The outgoing telecommunication device that the present embodiment provides, can be arranged on boundary node, can be also boundary node itself, is the device embodiment corresponding with Fig. 6 embodiment of the present invention, and specific implementation process does not repeat them here.Concrete, the outgoing telecommunication device 400 that the present embodiment provides specifically comprises:

Processor 41 and memory 42, instruction is carried out in memory 42 storages, when 400 operation of outgoing telecommunication device, between processor 41 and memory 42, communicate by letter, processor 41 is carried out the embodiment of the method that instruction is carried out as shown in Figure 6 outgoing telecommunication device 400, it realizes principle and technique effect is similar, repeats no more herein.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.

Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims

1. an outgoing telecommunication method, is characterized in that, comprising:

2. method according to claim 1, it is characterized in that, after solicitation message is set up in the first path that described the first boundary node reception second network sends, described the first boundary node is set up solicitation message according to described the first path, build before the second path sets up solicitation message, also comprise:

3. method according to claim 1, it is characterized in that, described the first boundary node sends described the second path to described the second boundary node and sets up solicitation message, so that before the service path between the foundation of described the second boundary node and described the 3rd network, also comprise:

4. according to the method described in claim 1～3 any one, it is characterized in that,

Described the first boundary node is set up solicitation message according to described the first path, builds the second path and sets up solicitation message, comprising:

5. according to the method described in claim 1～3 any one, it is characterized in that,

6. according to the method described in claim 1～5 any one, it is characterized in that, described first network is software defined network, and described the first agreement is OpenFlow agreement;

7. an outgoing telecommunication method, is characterized in that, comprising:

8. method according to claim 7, is characterized in that, the network controller of described first network also comprises before receiving the routing protocol message that the first boundary node of described first network sends:

The sign of described reflection group;

9. method according to claim 8, its feature exists, and also comprises:

10. method according to claim 8, is characterized in that, also comprises:

11. according to the method described in claim 7～10 any one, it is characterized in that, described first network is software defined network, and described the first agreement is OpenFlow agreement;

12. 1 kinds of outgoing telecommunication devices, is characterized in that, comprising:

13. devices according to claim 12, is characterized in that,

Described processing module, also, for setting up solicitation message according to described the first path, determines described the second boundary node;

14. devices according to claim 12, is characterized in that,

Described sending module, for sending described the second path to described the second boundary node, set up solicitation message, so that described the second boundary node is to described network controller path computation solicitation message, and then make described network controller calculate and set up described the first boundary node to the service path between described the second boundary node.

15. according to the device described in claim 12～14 any one, it is characterized in that,

Described processing module, for setting up solicitation message according to described the first path, solicitation message is set up in the second path that builds described second protocol;

16. according to the device described in claim 12～14 any one, it is characterized in that,

Described processing module, for setting up solicitation message according to described the first path, solicitation message is set up in the second path that builds described the first agreement;

17. according to the device described in claim 12～16 any one, it is characterized in that, described first network is software defined network, and described the first agreement is OpenFlow agreement;

18. 1 kinds of outgoing telecommunication devices, is characterized in that, comprising:

19. devices according to claim 18, is characterized in that,

Described processing module, for obtaining described reflection group information, described reflective information comprises:

The sign of described reflection group;

20. devices according to claim 19, is characterized in that,

Described processing module, for the reflection group under definite described the first boundary node;

21. devices according to claim 19, is characterized in that,

Described processing module, determines described group of agreement for inquiring about described reflection group information, described routing protocol message is added to the protocol header of described the first agreement with the routing protocol message of generation group agreement;

22. according to the device described in claim 18～21 any one, it is characterized in that, described first network is software defined network, and described the first agreement is OpenFlow agreement;

23. 1 kinds of outgoing telecommunication devices, it is characterized in that, comprise: processor and memory, described memory stores is carried out instruction, when described outgoing telecommunication device operation, between described processor and described memory, communicate by letter, described processor is carried out described execution instruction and is made described outgoing telecommunication device carry out the method as described in claim 1 to 6 any one.

24. 1 kinds of outgoing telecommunication devices, it is characterized in that, comprise: processor and memory, described memory stores is carried out instruction, when described outgoing telecommunication device operation, between described processor and described memory, communicate by letter, described processor is carried out described execution instruction and is made described outgoing telecommunication device carry out the method as described in claim 7 to 11 any one.