CN101815024A

CN101815024A - Ethernet service intercommunication method and device

Info

Publication number: CN101815024A
Application number: CN201010139686A
Authority: CN
Inventors: 张君辉; 周建国; 赵颢
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2010-03-24
Filing date: 2010-03-24
Publication date: 2010-08-25
Anticipated expiration: 2030-03-24
Also published as: WO2011116662A1; CN101815024B

Abstract

The invention discloses an Ethernet service intercommunication method and an Ethernet service intercommunication device. The method comprises the following step of: realizing the Ethernet service intercommunication between a multi-service transfer platform MSTP and a packet switched network PSN in a virtual container group VCG interface mode, wherein the VCG interface is a logic interface consisting of a plurality of virtual container VC sub-channels. By the method and the device, the Ethernet service intercommunication between the MSTP network and the PSN network is realized, and the operational cost of the networks is lowered.

Description

Ether service intercommunication method and device

Technical field

The present invention relates to communication field, relate in particular to a kind of ether service intercommunication method and device.

Background technology

At network under the overall background of all-IP evolution, the business control of diverse network also turns under the condition of IPization gradually, transmission network is in order to realize the efficient carrying to upper-layer service, from MSTP (Multi-servicetransport platform, multi-service transport platform) evolving to PTN (Package Transport Network, the packet switching network) is trend of the times.

The PTN network provides a performance best, compatible ether, ATM (Asynchronous TransferMode, asynchronous transfer mode), SDH (Synchronous Digital Hierarchy, SDH (Synchronous Digital Hierarchy)), PDH (Plesiochronous Digital Hierarchy, PDH (Pseudo-synchronous Digital Hierarchy)), PPP (Point-to-Point Protocol, peer-peer protocol)/HDLC (High level Data Link Control, High-Level Data Link Control), the unified delivery platform of various technology such as frame relay, eliminated the diversity of networking type, replace the diversity of interface type, original network equipment, as ATM switch, the ether switch, the PDH optical transceiver, can pass through the PTN network interconnection together, also can be by the atm interface of PTN, ether interface, the PDH interface is directly replaced.

But, have a large amount of MSTP networks at present, and how newly-built PTN network and existing MSTP network realize intercommunication, are the technical problems that becomes to be solved at present.

In sum, there has been the effectively problem of the technology of intercommunication of MSPT network and PTN Network in prior art always since the midium or long term as can be known, therefore is necessary to propose improved technological means, solves this problem.

Summary of the invention

Because prior art exist existing MSPT network and PTN Network effectively intercommunication problem and make the present invention, main purpose of the present invention for this reason is to provide a kind of ether service intercommunication method and device, wherein:

Ether service intercommunication method according to the embodiment of the invention comprises: by the ether business intercommunication between virtual container set VCG interface mode realization multi-service transport platform MSTP and the packet switching network PTN, wherein, the logic interfacing formed by a plurality of virtual container VC subchannels of VCG interface.

Preferably, in the User Network Interface side, realize ether business intercommunication between MSTP and the PTN by the VCG interface mode, further comprise: the MSTP ether business that will be encapsulated as the SDH frame format is mapped to VCG, and is mapped to according to VCG and is encapsulated as the VPLS frame format behind the pseudo-line and inserts PTN.

Preferably, the SDH frame format comprises: user's message, GFP, VC4, VC12, STM-N; The VPLS frame format comprises: D-MAC, S-MAC, pseudo-line, user's message.

Preferably, in the Network-to-Network Interface side, by the ether business intercommunication between VCG interface mode realization MSTP and the PTN, further comprise: the PTN ether business that will be encapsulated as the VPLS frame format is mapped to VCG, and is converted to MSTP frame format access MSTP according to VCG.

Preferably, the VPLS frame format comprises: D-MAC, S-MAC, VLAN ID, tunnel label, pseudo line tag, user's message; The SDH frame format comprises: user's message, GFP, VC4, VC12, STM-N, tunnel label, pseudo-line.

Ether business intercommunication device according to the embodiment of the invention comprises: first modular converter is used for by the VCG interface mode MSTP ether business being converted to PTN ether business; Second modular converter is used for by the VCG interface mode PTN ether business being converted to MSTP ether business.

Preferably, first modular converter further comprises: first mapping submodule, and the MSTP ether business that is used for being encapsulated as the SDH frame format is mapped to VCG; The first encapsulation submodule is used for being mapped to according to VCG and is encapsulated as the VPLS frame format behind the pseudo-line and inserts PTN.

Preferably, second modular converter further comprises: second mapping submodule is mapped to VCG with the PTN ether business that is encapsulated as the VPLS frame format; The second encapsulation submodule is used for being converted to the MSTP frame format according to VCG and inserts MSTP.

Compared with prior art, according to technique scheme of the present invention,, the MSTP network is gone into as the UNI side or the NNI side joint of PTN network by being reference point with the PTN network, realize Ethernet service intercommunication between MSTP network and the PTN network, reduced the network operation cost.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is according to the MSTP network of the embodiment of the invention UNI side networking schematic diagram as the PTN network;

Fig. 2 is according to the MSTP network of the embodiment of the invention NNI side networking schematic diagram as the PTN network;

Fig. 3 is the flow chart according to the ether service intercommunication method of the embodiment of the invention;

Fig. 4 is the UNI side message format conversion schematic diagram according to the embodiment of the invention;

Fig. 5 is the NNI side message format conversion schematic diagram according to the embodiment of the invention;

Fig. 6 is the block diagram according to the ether business intercommunication device of the embodiment of the invention.

Embodiment

The present invention has realized Ethernet service intercommunication between MSTP network and the PTN network, with the PTN network is reference point, can go into the MSTP network as UNI (User Network Interface) side joint of PTN network, also can go into the MSTP network as NNI (Network-to-Network Interface) side joint of PTN network.With reference to figure 1 and Fig. 2, Fig. 1 is according to the MSTP network of the embodiment of the invention UNI side networking schematic diagram as the PTN network, and Fig. 2 is according to the MSTP network of the embodiment of the invention NNI side networking schematic diagram as the PTN network.As shown in Figure 1, subscriber equipment A and B are linked into existing MSTP network, and the MSTP network converges to the PTN network again, and for the PTN network, the MSTP network inserts as UNI equipment.As shown in Figure 2, subscriber equipment A and B are linked into newly-built PTN network, and the PTN network converges to existing MSTP network again, and concerning the PTN network, the MSTP network inserts as NNI equipment.

For making the purpose, technical solutions and advantages of the present invention clearer,, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.

According to embodiments of the invention, provide a kind of ether service intercommunication method.

The present invention passes through the ether business intercommunication between VCG (Virtual Concatenation Group, virtual container set) interface mode realization MSTP network and the PTN network, wherein, and the logic interfacing that the VCG interface is made up of a plurality of virtual containers (VC) subchannel.

Fig. 3 is the flow chart according to the ether service intercommunication method of the embodiment of the invention, and as shown in Figure 3, this method comprises:

Step S302 in the UNI side, is mapped to VCG with the MSTP ether business that is encapsulated as the SDH frame format, and is mapped to according to VCG and is encapsulated as the VPLS frame format behind the pseudo-line and inserts PTN.

Step S304 in the NNI side, is mapped to VCG with the PTN ether business that is encapsulated as the VPLS frame format, and is converted to MSTP frame format access MSTP according to VCG.

Describe above-mentioned each details of handling below in detail.

(1) step S302

Fig. 4 is the UNI side message format conversion schematic diagram according to the embodiment of the invention.The business that enters the MSTP network enters the PTN network with the VCG interface mode, adds behind the pseudo-line to transmit in the tunnel, and the business that will recover behind the peeling label is put in the VCG interface and is sent to the opposite end then.Wherein, VCG extracts several VC subchannels out to form a logic interfacing from STM-1.MSTP specifically comprises as the treatment step of the UNI side of PTN:

Step 1, the ether business of MSTP network inserts from the STM port of this method, and unification is packaged into the SDK frame format, comprises VC4, VC12, GFP (Generic Framing Procedure, Generic Framing Procedure) and user's message;

Step 2, this method are extracted SDH frame head information, are mapped to different VCG respectively;

Step 3, this method are mapped to pseudo-line to VCG again, and are packaged into the MPLS frame format, comprise outer field DMAC, SMAC, pseudo-line and user's message;

Step 4, professional according to pseudo-line access PTN equipment, and the DMAC according to the ether business transmits in VSI (virtual switch instance).

(2) step S304

Fig. 5 is the NNI side message format conversion schematic diagram according to the embodiment of the invention.The business of having beaten pseudo-line and tunnel label in the PTN network enters the MSTP network with the VCG interface mode and transmits, and delivers to another node of PTN network.MSTP specifically comprises as the treatment step of the NNI side of PTN:

Step 1, PTN network ether business enters PTN equipment, is packaged into the MPLS frame format, comprises outer field DMAC, SMAC, is used to distinguish VCG number VLAN ID, also has tunnel label, pseudo line tag and user's message;

Step 2, this method is distinguished VCG number according to outside VLAN ID;

Step 3 is mapped as corresponding VC4/VC12 to VCG, and is packaged into the frame format of MSTP;

Step 4, service access MSTP network, and transmit.

According to technique scheme of the present invention, realized Ethernet service intercommunication between MSTP network and the PTN network, reduced the network operation cost.

Device embodiment

According to the embodiment of the invention, also provide a kind of ether business intercommunication device.

Fig. 6 is that as shown in Figure 6, this device comprises according to the block diagram of the ether business intercommunication device of the embodiment of the invention:

First modular converter 10 is used for by the VCG interface mode MSTP ether business being converted to PTN ether business; Second modular converter 20 is used for by the VCG interface mode PTN ether business being converted to MSTP ether business.

Particularly, first modular converter 10 further comprises: first mapping submodule, the MSTP network ether business that is used for being encapsulated as the SDH frame format is mapped to VCG, and the first encapsulation submodule is used for being mapped to according to VCG and is encapsulated as the VPLS frame format behind the pseudo-line and inserts the PTN network.

Second modular converter 20 further comprises: second mapping submodule, the PTN network ether business that is encapsulated as the VPLS frame format is mapped to VCG, and the second encapsulation submodule is used for being converted to the MSTP frame format according to VCG and inserts the MSTP network.

To sum up, the technique scheme according to the present invention by being reference point with the PTN network, is gone into the MSTP network as the UNI side or the NNI side joint of PTN network, realized Ethernet service intercommunication between MSTP network and the PTN network, has reduced the network operation cost.

The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.

Claims

1. an ether service intercommunication method is characterized in that, comprising:

By the ether business intercommunication between virtual container set VCG interface mode realization multi-service transport platform MSTP and the packet switching network PTN, wherein, the logic interfacing that described VCG interface is made up of a plurality of virtual container VC subchannels.

2. method according to claim 1 is characterized in that, and is described by the ether business intercommunication between VCG interface mode realization MSTP and the PTN in the User Network Interface side, further comprises:

The MSTP ether business that is encapsulated as the SDH frame format is mapped to VCG, and is mapped to according to VCG and is encapsulated as the VPLS frame format behind the pseudo-line and inserts PTN.

3. method according to claim 2 is characterized in that, described SDH frame format comprises: user's message, GFP, VC4, VC12, STM-N; Described VPLS frame format comprises: D-MAC, S-MAC, pseudo-line, user's message.

4. method according to claim 1 is characterized in that, and is described by the ether business intercommunication between VCG interface mode realization MSTP and the PTN in the Network-to-Network Interface side, further comprises:

The PTN ether business that is encapsulated as the VPLS frame format is mapped to VCG, and is converted to MSTP frame format access MSTP according to VCG.

5. method according to claim 4 is characterized in that, described VPLS frame format comprises: D-MAC, S-MAC, VLAN ID, tunnel label, pseudo line tag, user's message; Described SDH frame format comprises: user's message, GFP, VC4, VC12, STM-N, tunnel label, pseudo-line.

6. an ether business intercommunication device is characterized in that, comprising:

First modular converter is used for by the VCG interface mode MSTP ether business being converted to PTN ether business;

Second modular converter is used for by the VCG interface mode PTN ether business being converted to MSTP ether business.

7. device according to claim 6 is characterized in that, described first modular converter further comprises:

First mapping submodule, the MSTP ether business that is used for being encapsulated as the SDH frame format is mapped to VCG;

The first encapsulation submodule is used for being mapped to according to described VCG and is encapsulated as the VPLS frame format behind the pseudo-line and inserts described PTN.

8. device according to claim 7 is characterized in that, described SDH frame format comprises: user's message, GFP, VC4, VC12, STM-N; Described VPLS frame format comprises: D-MAC, S-MAC, pseudo-line, user's message.

9. device according to claim 6 is characterized in that, described second modular converter further comprises:

Second mapping submodule is mapped to VCG with the PTN ether business that is encapsulated as the VPLS frame format;

The second encapsulation submodule is used for being converted to the MSTP frame format according to described VCG and inserts MSTP.

10. device according to claim 9 is characterized in that, described VPLS frame format comprises: D-MAC, S-MAC, VLAN ID, tunnel label, pseudo line tag, user's message; Described SDH frame format comprises: user's message, GFP, VC4, VC12, STM-N, tunnel label, pseudo-line.