CN109561012A - A kind of means of communication of SDH network and packet network - Google Patents
A kind of means of communication of SDH network and packet network Download PDFInfo
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- CN109561012A CN109561012A CN201811572207.0A CN201811572207A CN109561012A CN 109561012 A CN109561012 A CN 109561012A CN 201811572207 A CN201811572207 A CN 201811572207A CN 109561012 A CN109561012 A CN 109561012A
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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]
- H04L12/46—Interconnection of networks
- H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
- H04L12/462—LAN interconnection over a bridge based backbone
- H04L12/4625—Single bridge functionality, e.g. connection of two networks over a single bridge
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A kind of means of communication of SDH network and packet network, can solve the problems, such as packet network and the intercommunication of SDH network special line.Including controlling VCG interface and the one-to-one bridge joint of uLei interface inside planar configuration equipment；SDH is to grouping direction: Forwarding plane is changed into Ethernet message format for being transferred to the code stream of this equipment from SDH network, by EOS decoding；Forwarding surface is bridged to uLei interface for the message of VCG interface；ULei interface carries out MPLS label encapsulation according to the VPN information of binding and is forwarded to packet network；Packet network is to the direction SDH: if it is uLei interface that packet network MPLS label, which searches outgoing interface, the VCG interface of SDH is bridged to after corresponding packets forwarding movement is finished；Ethernet message is carried out EOS processing by SDH processing unit, is converted into SDH code stream and is mapped in corresponding VC12 and is sent to SDH network.The purpose that SDH network and packet network can be attached by the present invention meets the demand that SDH network and packet network interconnect.
Description
Technical field
The present invention relates to network communication technology fields, and in particular to a kind of means of communication of SDH network and packet network.
Background technique
Government and enterprise customers special line is constructed based on packet network, generally uses VPWS technology, VPWS (Virtual Private
Wire Service), refer to construction on the infrastructure of mpls network, is provided between a pair of of port of two routers high
Two layers of transparent transmission of speed can be transmitted to far-end PE equipment for the original ether network packet of local end PE equipment is transparent, be that a kind of point arrives
The two-layer VPN agreement of point, operator uses the PTN/IP RAN network struction government and enterprise customers special line based on VPWS technology at present.
Traditional government and enterprise customers Ethernet transmission special line generally uses EoS technology (Ether over SDH) to pass through SDH network
Point-to-point special line is opened, the transparent transmitting two layer message between the user access port of two SDH equipments, SDH equipment is by user
Access interface and virtual concatenation group VCG (Virtual Concatenation Group) are bound, according to the demand of client's special line bandwidth
VCG can be the binding of multiple VC12, VC3, VC4.
When government and enterprises' special line is opened, there are a kind of demands for telecom operators: old SDH private line network and it is emerging based on
Point-to-point is needed to map intercommunication between the PTN/IP RAN grouping private line network of VPWS technology.
Summary of the invention
The means of communication of a kind of SDH network and packet network proposed by the present invention, it is special with SDH network can to solve packet network
The problem of line intercommunication.
To achieve the above object, the invention adopts the following technical scheme:
A kind of means of communication of SDH network and packet network, comprising:
The processing for controlling plane, configuration three including SDH configurations, the configurations of VPWS and uLei bridge joint mouth
Point.
SDH configurations include the configuration (VC12, VC3, VC4) of single channelizing interface, the configuration of virtual VCG interface,
Channelizing VC interface ties up configuration and other attribute configurations into VCG interface etc., and VCG is not bound with user port herein.
The configurations of VPWS include the configuration, the configuration of LDP agreement, the configuration of PW pseudo-wire of basis routing, and PW is not herein
It is bound with AC mouthfuls of user.
ULei interface configuration section defines two interfaces uLei1, uLei2, and wherein uLei1 is responsible for the side SDH Virtual User
Interface herein binds VCG and uLei1.Wherein AC mouth of the uLei2 as packet side VPWS, while by uLei1 mouthfuls and uLei2
Mouth carries out binding and realizes VPWS and EOS intercommunication.
Forwarding plane is divided into forwarding table module, forwarding module；Wherein,
Forwarding table module is generated by control plane, and forwarding module executes lookup movement comprising access interface VPWS configuration
Information table, VCG information table, port attribute table, physical message table, ulei mouthfuls of bridging tables, ARP table, MPLS label table.
Forwarding module is divided into two parts from SDH network to packet network and from packet network to SDH network.
From SDH network to the processing of packet network Forwarding plane, the side SDH processing module is responsible for receive from SDH interface
Code stream reverts to the original Ethernet packet message of user, and carries corresponding VCG number and be sent to PHM packet handling module, packet transaction
Module searches VCG information table according to VCG port numbers, obtains uLei1 mouthful corresponding, is then found relatively by bridge joint
That answers ties up the uLei2 interface into packet network, i.e. the AC mouth of packet network VPWS, according to AC mouthfuls of lookup PW information, final encapsulation
MPLS label, the forwarding informations such as MAC header, and message is sent out from the outgoing interface of packet network.
From the foregoing, it will be observed that method of the present invention to realize SDH network and packet network communicates with each other, from packet network to SDH
The processing of forwarded plane, equipment receive the MPLS label message to come from packet network by packet network side interface, into
Row strips the operation such as label, by PW label lookup to corresponding AC interface, should be uLei2 interface herein, according to bridge information
ULei1 interface is obtained, the VCG number in uLei1 port attribute table is finally obtained, lookup VCG information table obtains corresponding
VCG mouthfuls and VC binding information, the side SDH processing module are responsible for being converted to packet message into SDH code stream, be sent in SDH network.
Compared with prior art, the present invention uses a pair of uLei virtual port bridging technology, and one is bound packet network
PW, one corresponding with SDH network VCG interface, achievees the purpose that SDH network and packet network can be attached, meets
The demand that SDH network and packet network interconnect.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the present invention；
Fig. 2 is networking application schematic diagram of the present invention；
Fig. 3 is modular structure schematic diagram of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
As shown in Figure 1, the means of communication of SDH network described in the present embodiment and packet network, comprising the following steps:
S100, control planar virtual go out an empty VCG interface and bind for identifying multiple VC12 of SDH network；
S200, control plane create ether forwarding interface of the empty uLei interface as packet network；
The AC access interface of S300, control planar configuration uLei interface as L2VPN (VPWS)；
By VCG interface and the one-to-one bridge joint of uLei interface inside S400, control planar configuration equipment；
S500, SDH are to grouping direction: Forwarding plane is solved for being transferred to the code stream of this equipment from SDH network by EOS
Code is changed into Ethernet message format, this message is from virtual VCG interface；
S600, forwarding surface are bridged to uLei interface for the message of VCG interface；
S700, uLei interface carry out MPLS label encapsulation according to the VPN information of binding and are forwarded to packet network；
S800, packet network to the direction SDH: if it is uLei interface that packet network MPLS label, which searches outgoing interface, in phase
The packets forwarding movement answered is bridged to the VCG interface of SDH after being finished；
Ethernet message is carried out EOS processing by S900, SDH processing unit, is converted into SDH code stream and is mapped in corresponding VC12
It is sent to SDH network.
Above-mentioned steps are described further below in conjunction with Fig. 2 and Fig. 3:
Step A: this equipment controls plane creation a pair of ulei interface (uLei1, uLei2), and this carries out ulei mouthfuls
One-to-one bridge joint.Two-layer VPN (VPWS) pseudo-wire is configured, the uLei2 mouthfuls of user side interfaces as this device packets network are accessed.
By running LDP agreement on packet network ether outgoing interface, far-end PE is distributed label to local PE, is formed in far-end PE equipment
Using the label value as the Label Forwarding Information Base of key assignments, the outgoing interface of list item is user side interface；It is formed in local PE equipment with user
Incoming interface is the list item of key assignments, and contents in table contains this label value, and the outgoing interface of list item is Ethernet interface；
Step B: this equipment controls plane and creates single channelizing interface (corresponding VC12, VC3, VC4), virtual VCG interface,
And one or more channelizing interfaces are tied up into VCG interface, and configure VCG interface and virtual bridged interface uLei1 binding；
Step C: from SDH network to packet network, SDH code stream is reverted to use using EOS technology by the side Forwarding plane SDH
Family original message, and according to VC layers of information obtain it bound in VCG port numbering, will carry VCG port numbering ether report
Text is sent to Forwarding plane packet side and is handled；
Step D: after this device forwards plane packet side receives message, from the VCG port numbering information conduct of message carrying
The list item that key assignments finding step B is generated, it is uLei1 mouthfuls corresponding to find VCG, and find according to ulei bridge information table in step A
ULei2 mouthfuls, this uLei2 mouthfuls of AC mouth for packet side VPWS；
Step E: packet side processing module is the VPWS list item generated as AC mouthfuls of key assignments finding step A using the uLei2 mouthfuls,
MPLS encapsulated tags and ether outgoing interface are obtained, MPLS encapsulation is carried out to user's two layer message, i.e., is increased before two layers of head
MPLS label and MAC header etc.；
Step F: step E is finished the message after encapsulation and thrown by local PE equipment according to the exit port information found in step A
It is delivered in the physics exit port of packet network side；Realize the delivery of SDH network to MPLS packet network.
Step G: from packet network to SDH network, Forwarding plane packet side receives the message from the side PW, according in step A
The list item of generation searches label list, removes MPLS label and MAC header etc., obtains original message；
Step H: obtaining user side AC outgoing interface according to list item in step A is uLei2 mouthfuls, obtains the corresponding bridge joint of uLei2
ULei1 mouthfuls in table, this uLei1 mouthfuls bridges mouth for the side SDH, obtains corresponding VCG according to the information in uLei1 port attribute table
Port information；
The side step I: Forwarding plane SDH uses VCG port numbering as the list item generated in key assignments finding step B, obtains
Out to VCG interface message, give the EOS processing module of SDH；
The side step J:SDH EOS processing module, will receive Ethernet message and is converted into code stream and be sent in SDH network.It realizes
Delivery of the message from packet network to SDH network.
Above step is completed the interconnection between SDH network and packet network and is communicated.
To sum up, use of embodiment of the present invention a pair of uLei virtual port bridging technology, the PW of a binding packet network, one
It is corresponding with SDH network VCG interface, achieve the purpose that SDH network and packet network can be attached, meets SDH network
The demand to interconnect with packet network.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (4)
1. the means of communication of a kind of SDH network and packet network, it is characterised in that: the following steps are included:
S100, control planar virtual go out an empty VCG interface and bind for identifying multiple VC12 of SDH network；
S200, control plane create ether forwarding interface of the empty uLei interface as packet network；
The AC access interface of S300, control planar configuration uLei interface as L2VPN (VPWS)；
By VCG interface and the one-to-one bridge joint of uLei interface inside S400, control planar configuration equipment；
S500, SDH are to grouping direction: Forwarding plane turns for being transferred to the code stream of this equipment from SDH network by EOS decoding
Become Ethernet message format, this message is from virtual VCG interface；
S600, forwarding surface are bridged to uLei interface for the message of VCG interface；
S700, uLei interface carry out MPLS label encapsulation according to the VPN information of binding and are forwarded to packet network；
S800, packet network to the direction SDH: if it is uLei interface that packet network MPLS label, which searches outgoing interface, corresponding
Packets forwarding movement is bridged to the VCG interface of SDH after being finished；
Ethernet message is carried out EOS processing by S900, SDH processing unit, is converted into SDH code stream and is mapped in corresponding VC12 and sends
To SDH network.
2. the means of communication of SDH network according to claim 1 and packet network, it is characterised in that: the step S400
It specifically includes:
S401: configuration two-layer VPN (VPWS) pseudo-wire accesses the uLei2 mouthfuls of user side interfaces as this device packets network；It is logical
Cross on packet network ether outgoing interface operation LDP agreement, far-end PE distributes label to local PE, the formation of far-end PE equipment with
The label value is the Label Forwarding Information Base of key assignments, and the outgoing interface of list item is user side interface；It is formed to enter with user in local PE equipment
Interface is the list item of key assignments, and contents in table contains this label value, and the outgoing interface of list item is Ethernet interface.
3. the means of communication of SDH network according to claim 2 and packet network, it is characterised in that: the step S400
Further include:
S402: this equipment controls plane and creates single channelizing interface, virtual VCG interface, and by one or more channelizings
Interface is tied up into VCG interface, and configures VCG interface and virtual bridged interface uLei1 binding.
4. the means of communication of SDH network according to claim 3 and packet network, it is characterised in that: the step S900
It specifically includes:
The side S901: Forwarding plane SDH uses VCG port numbering as the list item generated in key assignments finding step S401, is gone out
To VCG interface message, give the EOS processing module of SDH；
The side S902:SDH EOS processing module, will receive Ethernet message and is converted into code stream and be sent in SDH network, realize message
Delivery from packet network to SDH network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572207.0A CN109561012B (en) | 2018-12-21 | 2018-12-21 | Communication method for SDH network and packet network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572207.0A CN109561012B (en) | 2018-12-21 | 2018-12-21 | Communication method for SDH network and packet network |
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| Publication Number | Publication Date |
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| CN109561012A true CN109561012A (en) | 2019-04-02 |
| CN109561012B CN109561012B (en) | 2021-05-28 |
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| US7417950B2 (en) * | 2003-02-03 | 2008-08-26 | Ciena Corporation | Method and apparatus for performing data flow ingress/egress admission control in a provider network |
| CN102333011A (en) * | 2011-10-17 | 2012-01-25 | 中兴通讯股份有限公司 | Unidirection link detection (UDLD) method and UDLD device |
| CN105656652A (en) * | 2014-11-14 | 2016-06-08 | 中兴通讯股份有限公司 | Service data flow transmission method and device |
| CN204465776U (en) * | 2015-02-15 | 2015-07-08 | 杭州初灵信息技术股份有限公司 | A kind of PTN device merging SDH network and PTN network |
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