CN101001196A - Method and device for setting pseudo-line tunnel and transmitting message using it - Google Patents
Method and device for setting pseudo-line tunnel and transmitting message using it Download PDFInfo
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- CN101001196A CN101001196A CNA2007100026228A CN200710002622A CN101001196A CN 101001196 A CN101001196 A CN 101001196A CN A2007100026228 A CNA2007100026228 A CN A2007100026228A CN 200710002622 A CN200710002622 A CN 200710002622A CN 101001196 A CN101001196 A CN 101001196A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
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Abstract
This invention discloses a method and a device for setting up false-line tunnel to transmit message, in which, the method includes: setting up virtual interfaces on border devices of business runner of the outlet/inlet to take them as the AC link interfaces of the border devices to set up false bus PW and binding the virtual interfaces and the PW, the inlet business runner border device transfers the message to the customer border device via the virtual interface, the PW and outlet border device. This invention also provides a device for setting up false line tunnel to transmit messages including a virtual interface set-up module, a PW set-up module, a binding module and a message transfer module.
Description
Technical field
The present invention relates to the communications field, particularly a kind ofly set up pseudo-line tunnel and utilize it to transmit method of message and device.
Background technology
PWE3 (Pseudo Wire Emulation Edge to Edge-Pseudo Wire Emulation Edge-to-Edge) is a kind of technology mechanism that can go up the professional key property of simulation telecommunication path at PSN (PacketSwitched Network-packet switching network).The pseudo-line PW of PWE3 (Pseudo Wire) encapsulates the inbound port of cell, Packet Data Unit or specific transactions bit stream, and carries them and transmit by IP (Internet Protocol-Internet Protocol) or MPLS (Multi-Protocol Label Switching-multiprotocol label switching) passage.PW provides following major function: 1. the specific transactions or the circuit data of pair arrival PE (Provider Edge-Provider Edge) device port carry out the form encapsulation; 2. by the packaged business datum of PSN passage carrying; 3. set up PW between the PSN Path end point, the distinguished symbol of exchange and distribution PW; At the PW edge to the signaling of business, regularly, sequential and other parts manage; 5. relevant state and the alarm management of miscellaneous service.The viewpoint of (CE-Customer Edge) equipment from the client edge, PW is carrying selected professional a unshared link or a circuit.
As shown in Figure 1, for customer edge devices CE1 and CE2 can be at the PSN network communications, two provider edge equipment PE1 and PE2 need provide one or more PW.The initial data unit is sent to PE equipment by AC (Attachment Circuit) link, and packedly advances PW-PDU (Packet Data Unit-Packet Data Unit), then by the PSN network carrying.For core network, the PW flow is sightless, and for CE equipment, core network also is transparent.
PWE3 provides a kind of artificial service end to end, promptly can only enter a fixing PW from the next message of an AC link is default, but in actual applications, might need arrive different destinations by a plurality of PW from the message that an AC link comes, as shown in Figure 2, user under the gateway 1 both needed with gateway 3 under telex network, also need with gateway 2 under telex network, and this application can not be adopted based on the three-layer VPN of IP route (Virtural Private Network-VPN (virtual private network)) technology, for example need carry out the IP head and compress information such as removing the IP address to save link bandwidth on PE, need transmit extra control information etc. with the road.At this moment just need a kind of method of expansion, make the message of sending here from same link can be mapped to different tunnels as required, thereby deliver to different destinations.
For achieving the above object, can be by being assigned on the different AC links at the message that will arrive various objectives ground on the CE, disposing many PW between the PE realizes, but this scheme need be set up a large amount of PW and consume a large amount of AC LI(link interface)s, need CE to support message is assigned to the function of different AC links simultaneously, deployment costs dearly.In addition, message can be imported to different PW tunnels according to strategy by collocation strategy on PE equipment, thereby message is sent to corresponding opposite equip..But this scheme need dispose a large amount of strategies on PE, and configuration is complicated, and the strategy that will carry out being correlated with simultaneously with respect to common forwarding is handled more, and forward efficiency will be affected.
Summary of the invention
For satisfy the network equipment when message is transmitted with road message transmission control information, and message puts the requirement of multileaving, the embodiment of the invention has proposed a kind ofly to set up pseudo-line tunnel and utilize it to transmit method of message, said method comprising the steps of:
Going out/entering the mouth to set up virtual interface on the provider edge equipment respectively, described virtual interface as describedly going out/the AC LI(link interface) of the provider edge equipment that enters the mouth, is being set up pseudo-line PW, simultaneously described virtual interface and described PW are being bound;
Described inlet provider edge equipment is transmitted to customer edge devices with message by described virtual interface, described PW and described outlet provider edge equipment.
The embodiment of the invention has also proposed a kind ofly to set up pseudo-line tunnel and utilize it to transmit method of message, said method comprising the steps of:
Going out/entering the mouth and setting up virtual interface and configuration template on the provider edge equipment respectively, configuration is used to set up the service parameter of pseudo-line PW on described template, with the related PW that sets up of described template, and described PW and described virtual interface bound with label distribution protocol;
Described inlet provider edge equipment is transmitted to customer edge devices with message by described virtual interface, described PW and described outlet provider edge equipment.
The embodiment of the invention provides a kind of and has set up pseudo-line tunnel and utilize it to transmit the device of message, and described device comprises that virtual interface is set up module, PW sets up module, binding module and packet forwarding module;
Described virtual interface sets up module and is used for/set up virtual interface respectively on the provider edge equipment that enters the mouth;
Described PW sets up module and is used for described virtual interface is set up virtual interface that module sets up as the AC LI(link interface) that goes out/enter the mouth provider edge equipment, sets up pseudo-line PW;
Described binding module is used for that described virtual interface is set up virtual interface that module sets up and described PW and sets up the PW that module sets up and bind;
Described packet forwarding module is used for virtual interface and PW that message is bound by described binding module are transmitted to customer edge devices.
The embodiment of the invention also provides a kind of and has set up pseudo-line tunnel and utilize its device that transmits message, and described device comprises that virtual interface sets up module, configuration module, PW and set up module, binding module and packet forwarding module;
Described virtual interface sets up module and is used for/set up virtual interface respectively on the provider edge equipment that enters the mouth;
Described configuration module is used for/provider edge equipment that enters the mouth on configuration template, and configuration is used to set up the service parameter of pseudo-line PW on the template of configuration;
Described PW sets up module and is used for the related PW of foundation with label distribution protocol of template with the configuration of described configuration module;
Described binding module is used for that described virtual interface is set up virtual interface that module sets up and described PW and sets up the PW that module sets up and bind;
Described packet forwarding module is used for virtual interface and PW that message is bound by described binding module are transmitted to customer edge devices.
Beneficial effect: the embodiment of the invention has proposed a kind of method of utilizing virtual interface and configuration template to set up pseudo-line tunnel, and has provided and utilize this pseudo-line tunnel to transmit method of message.
Description of drawings
Fig. 1 is a PWE3 network model schematic diagram in the prior art;
Fig. 2 is that the prior art mid point is to multiple spot networking schematic diagram;
Fig. 3 is that the embodiment of the invention is set up pseudo-line tunnel and utilized it to transmit the schematic diagram of message;
Fig. 4 is that the embodiment of the invention is set up pseudo-line tunnel and utilized it to transmit the method for message flow chart;
Fig. 5 is the schematic diagram of embodiment of the invention PW encapsulated message;
Fig. 6 is that the embodiment of the invention is set up pseudo-line tunnel and utilized it to transmit the structure chart of first kind of device of message;
Fig. 7 is that the embodiment of the invention is set up pseudo-line tunnel and utilized it to transmit the structure chart of second kind of device of message.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
In order to realize the purpose of the embodiment of the invention, on provider edge equipment PE, set up virtual interface, this virtual interface disposes the miscellaneous service parameter, for example compress mode of the encapsulated type of message, compressed packet or the like as required as the AC LI(link interface) among the PWE3 on this virtual interface.Provider edge equipment PE sets up PW according to the PWE3 rules, and PW is offered other professional use as a kind of tunnel, VPN (virtual private network) for example, and PW and virtual interface bound, provide a kind of novel interface to other professional use.The destination address of the message that will transmit on provider edge equipment PE is related with corresponding PW, and transmitting of the related information of generation forwarding destination address and corresponding PW is transmitted to customer edge devices CE according to transmitting with message.
By utilizing the virtual interface set up on the PE equipment, transmit, and PW realizes transmitting method of message and comprises following concrete steps, as shown in Figure 3 and Figure 4:
Step 101: on PE1, PE2 and PE3, set up virtual interface respectively, and with virtual interface as the AC LI(link interface) among the PWE3, set up PW1 and PW2 according to the PWE3 rules.
Step 102: PW1 and PW2 are associated with destination address CE2 and CE3 respectively, and generation is transmitted.
Step 103:PE1 receives user's message 1 and the user's message 2 that CE1 sends, and searches accordingly according to the destination address CE2 of user's message 1 and user's message 2 and CE3 and transmits.
Step 104:, user's message 1 and user's message 2 are carried out the PW encapsulation according to transmitting tunnel information PW1 and the PW2 that middle destination address CE2 and CE3 are associated.
Fig. 5 is for carrying out the schematic diagram of PW encapsulation to user's message, wherein each several part is described as follows:
The tunnel head that E-Packets comprises two layer message head and tunnel label.
The PW encapsulation header comprises PW label and encapsulation control information, and the encapsulation control information is optionally, and it can add according to PWE3 and relevant rules as required.Whether control information can be any control information of miscellaneous service definition, be the IP message such as the message that encapsulates, and whether has carried out IP head compression or the like.
The professional former label that carries is used for the relevant information of identification service, in order to save link bandwidth, the vpn label in the original business can be removed, and directly transmits relevant information by the PW label.For example for the BGP/MPLS vpn service, can be with virtual interface and corresponding VPN binding, and binding relationship is issued in the PW list item of correspondence, just can know according to the list item of PW which VPN message is forwarded to, thereby can transmit the label memory of BGP/MPLS VPN.
User's message can be a message after treatment, for example through the message after the compression of IP head.
Step 105:PE1 will be forwarded to outlet device PE2 and PE3 by tunnel PW1 and PW2 respectively through the user's message 1 and the user's message 2 of PW encapsulation.
Step 106:PE2 and PE3 search corresponding PW list item according to the PW label information of user's message 1 and user's message 2 separately, and in view of the above to user's message 1 and user's message 2 decapsulations, user's message 1 and user's message 2 are transmitted to destination device CE2 and CE3.
Because the virtual interface of setting up on PE equipment can be participated in the IP route directly and calculate, and use as outgoing interface, so can also associate by the destination address and the virtual interface of calculating of IP route or the next message that will transmit of configuring static route, for example on the PE1 that destination address CE2 is related with virtual interface 1 in Fig. 3, destination address CE3 is related with virtual interface 2, and incidence relation write transmit, search according to the user's message destination address and to transmit, find related virtual interface, message is forwarded.Adopt process that this method realizes transmitting message and top destination address and PW are related to realize that the process of transmission message is the same by setting up, no longer narrate here.
In addition, can also be by template of configuration on PE equipment, configuration is used to set up the service parameter of pseudo-line PW on template, with the related PW that sets up of this template with label distribution protocol, and with PW and virtual interface binding, PW is offered other business as the tunnel, adopt process that this method realizes transmitting message and top destination address and PW are related to realize that the process of transmission message is the same by setting up, also no longer narrate here.
Referring to Fig. 6, the embodiment of the invention provides a kind of and has set up pseudo-line tunnel and utilize it to transmit the device of message, and device comprises that virtual interface is set up module, PW sets up module, binding module and packet forwarding module;
Virtual interface sets up module and is used for/set up virtual interface respectively on the provider edge equipment that enters the mouth;
PW sets up module and is used for virtual interface is set up virtual interface that module sets up as the AC LI(link interface) that goes out/enter the mouth provider edge equipment, sets up pseudo-line PW;
Binding module is used for that virtual interface is set up virtual interface that module sets up and PW and sets up the PW that module sets up and bind;
Packet forwarding module is used for virtual interface and PW that message is bound by binding module are transmitted to customer edge devices.
Referring to Fig. 7, the embodiment of the invention also provides a kind of and has set up pseudo-line tunnel and utilize its device that transmits message, and device comprises that virtual interface sets up module, configuration module, PW and set up module, binding module and packet forwarding module;
Virtual interface sets up module and is used for/set up virtual interface respectively on the provider edge equipment that enters the mouth;
Configuration module is used for/provider edge equipment that enters the mouth on configuration template, and configuration is used to set up the service parameter of pseudo-line PW on the template of configuration;
PW sets up module and is used for the related PW of foundation with label distribution protocol of template with configuration module configuration;
Binding module is used for that virtual interface is set up virtual interface that module sets up and PW and sets up the PW that module sets up and bind;
Packet forwarding module is used for virtual interface and PW that message is bound by binding module are transmitted to customer edge devices.
Above-described embodiment is a more preferably embodiment of the present invention, and common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacement all should be included in protection scope of the present invention.
Claims (10)
1. set up pseudo-line tunnel and utilize it to transmit method of message for one kind, it is characterized in that, said method comprising the steps of:
Going out/entering the mouth to set up virtual interface on the provider edge equipment respectively, described virtual interface as describedly going out/the AC LI(link interface) of the provider edge equipment that enters the mouth, is being set up pseudo-line PW, simultaneously described virtual interface and described PW are being bound;
Described inlet provider edge equipment is transmitted to customer edge devices with message by described virtual interface, described PW and described outlet provider edge equipment.
2. as claimed in claim 1ly set up pseudo-line tunnel and utilize it to transmit method of message, it is characterized in that described virtual interface is at least one, correspondingly, described PW is at least one, and described virtual interface and described PW bind one by one.
3. as claimed in claim 2ly set up pseudo-line tunnel and utilize it to transmit method of message, it is characterized in that described inlet provider edge equipment specifically comprises message by the step that described virtual interface, described PW and described outlet provider edge equipment are transmitted to customer edge devices:
The destination address of the message that described inlet provider edge equipment will be transmitted with transmit passage PW and/or virtual interface and carry out relatedly, generate described destination address and transmitting that described PW is associated;
Described inlet provider edge equipment is transmitted to described outlet provider edge equipment by searching described transmitting with described message;
Described outlet provider edge equipment is transmitted to customer edge devices with described message.
4. as claimed in claim 3ly set up pseudo-line tunnel and utilize it to transmit method of message, it is characterized in that, described inlet provider edge equipment specifically comprises by searching the described step that described message is transmitted to described outlet provider edge equipment of transmitting:
Described inlet provider edge equipment is searched described transmitting according to the destination address of message, according to the PW information that is associated with the destination address of described message in described the transmitting, described message is encapsulated, and the message after described the encapsulation is forwarded to described outlet provider edge equipment by virtual interface and described PW with described PW binding.
5. as claimed in claim 4ly set up pseudo-line tunnel and utilize it to transmit method of message, it is characterized in that the step that described message is encapsulated specifically comprises: add PW label and/or encapsulation control information.
6. as claimed in claim 3ly set up pseudo-line tunnel and utilize it to transmit method of message, it is characterized in that described outlet provider edge equipment specifically comprises the step that described message is transmitted to customer edge devices:
The message decapsulation of described outlet provider edge equipment after with described the encapsulation, and search corresponding PW list item according to the PW label information of the message after described the encapsulation, the message after the described decapsulation is transmitted to customer edge devices by the described virtual interface with described PW binding.
7. set up pseudo-line tunnel and utilize it to transmit method of message as any claim among the claim 1-6 is described, it is characterized in that, described virtual interface is as describedly going out/the outgoing interface use of the provider edge equipment that enter the mouth.
8. set up pseudo-line tunnel and utilize it to transmit method of message for one kind, it is characterized in that, said method comprising the steps of:
Going out/entering the mouth and setting up virtual interface and configuration template on the provider edge equipment respectively, configuration is used to set up the service parameter of pseudo-line PW on described template, with the related PW that sets up of described template, and described PW and described virtual interface bound with label distribution protocol;
Described inlet provider edge equipment is transmitted to customer edge devices with message by described virtual interface, described PW and described outlet provider edge equipment.
9. set up pseudo-line tunnel and utilize it to transmit the device of message for one kind, it is characterized in that described device comprises that virtual interface is set up module, PW sets up module, binding module and packet forwarding module;
Described virtual interface sets up module and is used for/set up virtual interface respectively on the provider edge equipment that enters the mouth;
Described PW sets up module and is used for described virtual interface is set up virtual interface that module sets up as the AC LI(link interface) that goes out/enter the mouth provider edge equipment, sets up pseudo-line PW;
Described binding module is used for that described virtual interface is set up virtual interface that module sets up and described PW and sets up the PW that module sets up and bind;
Described packet forwarding module is used for virtual interface and PW that message is bound by described binding module are transmitted to customer edge devices.
10. set up pseudo-line tunnel and utilize it to transmit the device of message for one kind, it is characterized in that, described device comprises that virtual interface sets up module, configuration module, PW and set up module, binding module and packet forwarding module;
Described virtual interface sets up module and is used for/set up virtual interface respectively on the provider edge equipment that enters the mouth;
Described configuration module is used for/provider edge equipment that enters the mouth on configuration template, and configuration is used to set up the service parameter of pseudo-line PW on the template of configuration;
Described PW sets up module and is used for the related PW of foundation with label distribution protocol of template with the configuration of described configuration module;
Described binding module is used for that described virtual interface is set up virtual interface that module sets up and described PW and sets up the PW that module sets up and bind;
Described packet forwarding module is used for virtual interface and PW that message is bound by described binding module are transmitted to customer edge devices.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100026228A CN101001196A (en) | 2007-01-25 | 2007-01-25 | Method and device for setting pseudo-line tunnel and transmitting message using it |
| PCT/CN2007/071347 WO2008092357A1 (en) | 2007-01-25 | 2007-12-27 | A method and device for establishing a pseudo wire tunnel and transmitting message using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100026228A CN101001196A (en) | 2007-01-25 | 2007-01-25 | Method and device for setting pseudo-line tunnel and transmitting message using it |
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| CN101001196A true CN101001196A (en) | 2007-07-18 |
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| CNA2007100026228A Pending CN101001196A (en) | 2007-01-25 | 2007-01-25 | Method and device for setting pseudo-line tunnel and transmitting message using it |
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| WO (1) | WO2008092357A1 (en) |
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| WO2009132542A1 (en) * | 2008-04-30 | 2009-11-05 | 华为技术有限公司 | A method and an apparatus for message transmission |
| WO2010006528A1 (en) * | 2008-07-17 | 2010-01-21 | 华为技术有限公司 | Pseudo wire establishing method, device and system |
| CN101697547A (en) * | 2009-09-30 | 2010-04-21 | 中兴通讯股份有限公司 | Two-layer forwarding method and system for PW service |
| CN101924699A (en) * | 2010-08-05 | 2010-12-22 | 福建星网锐捷网络有限公司 | Message forwarding method, system and provider edge equipment |
| WO2011047598A1 (en) * | 2009-10-21 | 2011-04-28 | 华为技术有限公司 | Network communication method and network node apparatus |
| CN102082738A (en) * | 2011-03-10 | 2011-06-01 | 迈普通信技术股份有限公司 | Method for extending MPLS VPN access through public network and PE equipment |
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| CN102333033A (en) * | 2011-09-15 | 2012-01-25 | 中兴通讯股份有限公司 | Method for communication terminals to communicate in heterogeneous network and operator edge equipment |
| CN101146054B (en) * | 2007-11-09 | 2012-04-18 | 杭州华三通信技术有限公司 | Packet forward method and device under PBT multi-point-to-point mode |
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| CN101924699A (en) * | 2010-08-05 | 2010-12-22 | 福建星网锐捷网络有限公司 | Message forwarding method, system and provider edge equipment |
| CN102082738A (en) * | 2011-03-10 | 2011-06-01 | 迈普通信技术股份有限公司 | Method for extending MPLS VPN access through public network and PE equipment |
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| CN107770028A (en) * | 2017-09-28 | 2018-03-06 | 安徽皖通邮电股份有限公司 | The method realized for the point-to-multipoint virtual LAN services of China Telecom's scene |
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