CN103685033B - SDN framework is supported packet switch and Circuit-switched general flow table and method - Google Patents
SDN framework is supported packet switch and Circuit-switched general flow table and method Download PDFInfo
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Abstract
SDN framework is supported packet switch and Circuit-switched general flow table and method, relate to the SDN framework in information technology, general flow table includes that switch type territory, circuit commutative field and packet-switched domain, switch type territory include that pure circuit switching, pure packet switch, circuit turn packet switch and packet shifting circuit four kinds of signs of exchange；Business Stream is forwarded to the network controller of key-course by southbound interface；Network controller judges type and the feature of described Business Stream, calculates the forward-path of Business Stream and generates corresponding general flow table；Network controller issues general flow table to the data transfer equipment of data Layer by southbound interface, sets up the forwarding rule of correspondence in data transfer equipment；Business Stream forwards rule to complete packet switch and circuit switching in data transfer equipment according to described.The present invention supports packet switch and circuit switching both technology simultaneously, runs efficient data with one and transmits UNE existing two the basic separate networks of replacement.
Description
Technical field
The present invention relates to SDN (Software Defined Network, the software in information technology
Definition network) specifically framework is to support packet switch and circuit in a kind of SDN framework
The general flow table of exchange and method.
Background technology
Nowadays, big telecom operators and the Internet manufacturer have the most respectively and maintain two sections
The most different basic networks 3/2 layer of IP/Ethernet data network and base of based on packet switch
In Circuit-switched 1/0 layer of TDM (Time Division Multiplexing, time division multiplex)
/ WDM (Wavelength Division Multiplexing, wavelength-division multiplex) transmits net.Due to number
According to net with to transmit net be two diverse networks, both have different architecture, friendship
Change technology, control and administrative mechanism.In a data network, control plane and datum plane is tight
Coupling；And transmit net and keep datum plane and the separation controlled between plane traditionally, therefore
It is the most challenging by two network unifications.
Common data network and the framework form of transmission net layering isolation, except making network in general
Have cost (TCO) remain high, also result in data Layer depend on unduly costliness, high energy consumption,
The most relatively fragile core router, transport layer then needs to provide the configuration that exceeds the quata in a large number
" rigid tubing " links in case of need.It will be apparent that both of which does not possess long-range holding
Continuous property, lacks the utilization of the circuit-switched technology to dynamic scalable.Additionally, transport layer and number
According to unaware no interactions between layer, also imply that bottom transmits network for upper strata based on IP
Business and application demand there is no visuality, it is impossible to the most effective by Automated condtrol plane
Support network dynamic Service.Current telecom operators are caused to open new circuit support clothes
Business is required for spending a few week or several months.
Although, in the more than ten years in past, industry occurs in that unified to packet switch and circuit switching
Intelligentized control method planar technique GMPLS Control together, but
It is only merely under the premise not changing existing IP network control framework, is expanded by simple
Open up distributed route and signaling processing protocol (OSPF-TE, RSVP-TE) controls with circuit
It is exchanged for the transmission network on basis.This distributed control mode is doomed to obtain full process and full network
Unified view, it is difficult to realize the whole network centralized Control and resource coordinating, and it be complicated to add network
Degree, reduces network scalability and reliability and stability.Therefore, have network only to control on framework
Change could really realize data network with transmit net fusion.
The generation of software defined network SDN technology, for supporting that packet switch is with Circuit-switched
It is uniformly controlled, it is achieved data network and the fusion transmitting net provide effective way.SDN framework
The fusion allowing service provider preferably to control to optimize with operating cost and service in principle divides
Group circuit network, and select correct technical combinations to obtain maximum net according to demand for services
Network motility.But it is at the beginning of being born, and only accounts for based on packet switch 3/2 layer
The situation of IP/Ethernet data network, and have ignored based on Circuit-switched 1/0 layer
TDM/WDM transmits network and the application demand of heterogeneous network based on both combinations.
For south orientation interface protocol OpenFlow in current software definition network SDN framework only
Support the limitation of packet switch, be badly in need of invention one and support packet switch and circuit switching simultaneously
New method, to realize SDN technology to data network, transmit network and mixed type net
Generally being suitable for of network, promotes the big fusion of network.
Summary of the invention
For defect present in prior art, it is an object of the invention to provide a kind of SDN
Framework is supported packet switch and Circuit-switched general flow table and method, supports that packet is handed over simultaneously
Change and circuit switching both technology, run efficient data with one and transmission UNE replaces
For existing two basic separate networks.
For reaching object above, the present invention provide a kind of SDN framework is supported packet switch and
Circuit-switched general flow table, including switch type territory, circuit commutative field and packet-switched domain,
Described switch type territory includes that pure circuit switching, pure packet switch, circuit turn packet switch and divide
Group shifting circuit four kinds of signs of exchange；Described circuit commutative field includes that communication network L0/L1 layer is abstract
Input list item and output list item, input list item at least include input port and virtual port,
Output list item at least includes output port and virtual port；Described packet-switched domain includes telecommunications network
The abstract identifier list item of network L2/L2.5/L3/L4-L7 layer and operation list item, identifier list
Item at least include the Ethernet frame head of packet data streams, VLAN tag, multiprotocol label,
IP packet header and higher protocol fields, operation list item determines the packet data streams to matching identification symbol
The process action taked.
On the basis of such scheme, the list item of described circuit commutative field by the optical fiber of L0/L1 layer,
WDM and TDM circuit interconnection behavior is abstract forms；The list item of packet-switched domain by
The Ethernet exchanging of L2/L2.5/L3/L4-L7 layer, multiprotocol label switching, L3 Switching, IP
Route and high-rise process data based on packet header identification and forward that behavior is abstract to be formed.
On the basis of such scheme, when WDM exchanges, the input list item of circuit commutative field
Including input port, input wavelength；Output list item includes output port, output wavelength；Described
Virtual port is not used.
On the basis of such scheme, when TDM exchanges, the input list item of circuit commutative field
Including input interface, TDM signal type, start time slot；Output list item include output port,
TDM signal type, beginning time slot；Described virtual port is not used.
On the basis of such scheme, when circuit switching turns packet switch, in circuit commutative field
The virtual port of output list item is mapped to the operation list item in corresponding packet-switched domain；Packet switch
During shifting circuit exchange, the operation list item in packet-switched domain is mapped in corresponding circuits switching domain defeated
Enter the virtual port of list item.
On the basis of such scheme, the sign in described switch type territory is formed by two combination of bytes,
00 represents pure circuit switching, and 11 represent that pure packet switch, 01 indication circuit exchange turn packet and hand over
Changing, 10 represent the exchange of packet switch shifting circuit.
The present invention also provides for supporting in a kind of SDN framework based on described general flow table that packet is handed over
Changing and Circuit-switched method, SDN framework includes application layer, key-course and data Layer, control
Preparative layer includes network controller, and the northbound interface of network controller connects application layer, southbound interface
Connect data Layer, comprise the steps: that new business flow initial for S1. enters in SDN,
Described Business Stream is forwarded to the network controller of key-course by southbound interface；S2. network controls
Type and the feature of described Business Stream judged by device, calculates the forward-path of described Business Stream,
And generate corresponding general flow table；S3. network controller issues general flow table by southbound interface
To the data transfer equipment of data Layer, set up corresponding with general flow table in data transfer equipment
Forward rule；The most described Business Stream forwards rule to complete in data transfer equipment according to described
Packet switch and circuit switching.
On the basis of such scheme, being achieved in that of described method is arranged uniquely at key-course
One group of network controller, network controller controls data network and biography by southbound interface unified management
Send net, be connected with the collaborative sublayer in key-course by northbound interface；Collaborative sublayer has communication
The overview of network, it is achieved the seamless interactive operation of teleservice and optimization, and will application
The service request of layer is converted into network request and is handed down to network controller.
On the basis of such scheme, being achieved in that of described method arranges two groups at key-course
Separate network controller, is respectively directed to the data network of data Layer and transmits net, and described two
Group network controller is by East and West direction interface or collaborative sublayer real time interaction information, and collaborative sublayer is gathered around
There is the overview of communication network, it is achieved the seamless interactive operation of teleservice and optimization, and
The service request of application layer is converted into network request and is handed down to network controller.
The beneficial effects of the present invention is:
1, the present invention divides by integrating the Circuit-switched cross-connect matrix of L0/L1 and L2/L3/L4
The look-up table of group exchange builds general flow table, and network controller is uniformly controlled the end by general flow table
The forwarding data flow of all types of switching equipment of layer.Simplify also uniform data net and the control transmitting net
And management, merge the data network based on packet switch and the transmission based on circuit switching
Net, and the network service requirement suitable technical combinations of selection provided according to them.
2, the present invention network operator can be allowed to rely on the most merely equipment vendors provide possesses
The closed system of equal functional configuration, considers data network with the angle isolated and transmits net resource,
And the technical limits being across between packet switch and circuit switching, at a facilities network merged
New extra earning service is provided on network by every means, thus brings innovation faster and differentiation
Service.
3, the present invention is in actual applications, can be by communication network and data center network
WDM、OTN、PTN、IP RAN、P-OTN、IP Router、Ethernet Switch
Or Multi-layer switch (IP RAN/IP Router/Ethernet Switch is equipment form
Title, it is impossible to centre adds pause mark and separates) etc. multiple based on circuit switching, packet switch or mixing
The equipment form unification of exchange comes on software defined network SDN framework, it is achieved southbound interface
Agreement is to packet-type business and the full support of Circuit Service.
Accompanying drawing explanation
Fig. 1 is the software defined network SDN layer architecture figure that the present invention applies；
Fig. 2 is to support packet switch and Circuit-switched general flow table in SDN framework of the present invention
Structure chart；
Fig. 3 is that the present invention is uniformly controlled packet switch and the first implementation Circuit-switched
Schematic diagram；
Fig. 4 is that the present invention is uniformly controlled packet switch and Circuit-switched the second implementation
Schematic diagram；
Fig. 5 is that first embodiment of the invention WDM multi-wavelength circuits exchanges exemplary plot；
Fig. 6 is second embodiment of the invention TDM time slot circuit switching exemplary plot；
Fig. 7 is third embodiment of the invention pure packet switch exemplary plot；
Fig. 8 is fourth embodiment of the invention circuit switching and packet switch mutual translation example figure.
Detailed description of the invention
As it is shown in figure 1, the software defined network SDN layer architecture figure applied for the present invention,
It includes application layer, key-course and data Layer, is wherein application layer, covers various different
Network and application (such as application program 1-application program N in figure).According to SDN not
Same application demand, application layer is called the north orientation application programming interface connected with key-course and (is called for short
Northbound interface), abstract at one after network on realize common network service and difference in functionality
Application.Key-course is mainly responsible for processing data and is forwarded the abstracted information of face resource, can support net
Network topology, the collecting and safeguard of status information, and difference is called in control based on application program
Forwarding face resource.Utilize the south orientation DLL that key-course connects, key-course pair with data Layer
Data transfer equipment carries out abstract, obtains data and forwards resource information, generates communication network abstract
View, and it is supplied to upper layer application by northbound interface.Data Layer is responsible for based on general flow table pair
Packet-type and Circuit Service stream carry out processing, forwarding and state collection, its data transfer equipment
Can be ip router based on packet-switch technology, Ethernet switch or protocol converter
Deng, it is possible to it is the equipment such as OTN based on circuit-switched technology, SDH or WDM, more has
It is notably the pattern of fusion equipment of comprehensive two kinds of switching technologies, such as packet enhancement mode optical transfer network
(P-OTN) equipment.
As in figure 2 it is shown, be to support packet and Circuit-switched stream table simultaneously, it is each by data Layer
It is general list item based on stream that the data of class switching equipment forward behavior abstract, mainly includes exchange
Type field, circuit commutative field and three parts of packet-switched domain.Described switch type territory includes pure
Circuit switching, pure packet switch, circuit turn packet switch and packet shifting circuit four kinds of signs of exchange；
In the present embodiment, indicating and formed by two combination of bytes, 00 represents pure circuit switching, and 11 represent
Pure packet switch, 01 indication circuit exchange turns packet switch, and 10 represent packet switch shifting circuit
Exchange.Circuit commutative field is by electricity such as the optical fiber of communication network L0/L1 layer, WDM and TDM
Road interconnection behavior is abstracted into input list item and output list item, inputs with ＜；Output ＞ list item
(＜ IN；OUT ＞) describe, input list item at least includes input port (Input Port)
With virtual port (Virtual Port), output list item at least includes output port (Output Port)
With virtual port (Virtual Port).Exchange specific to WDM, ＜ input can be expressed as
Mouthful, input wavelength；Output port, output wavelength ＞ (＜ Input Port, Input Wavelength；
Output Port, Output Wavelength ＞).TDM exchange can be expressed as ＜ input port,
TDM signal type, starts time slot；Output port, TDM signal type, start time slot ＞
(＜ Input Port, TDM Signal-type, Starting Time-slot；Output Port,
TDM Signal-type, Starting Time-slot ＞)；Visible WDM exchange and TDM hand over
When changing, virtual port (Virtual Port) is not the most used.Described packet-switched domain will communication
The Ethernet exchanging of network L2/L2.5/L3/L4-L7 layer, multiprotocol label switching, L3 Switching,
IP route and high-rise process wait data based on packet header identification to forward behavior to be abstracted into mark
Symbol list item and operation list item, use ＜ identifier；Operation ＞ (＜ IDENTIFIER；ACTION
＞) list item describes.Identifier list item covers the Ethernet frame head of packet data streams
(Ethernet frame), VLAN tag (VLAN tags), multiprotocol label (MPLS
Labels), the L2-L7 such as IP packet header (IP header) and higher protocol fields (L4header)
Layer relevant information, operation list item determines the process being taked the packet data streams of matching identification symbol
Action, specifically include forwarding, abandon, mirror image, the behavior, such as packet switch such as mapping turn electricity
Road exchange (Map to virtual-port).
When pure circuit switching and pure packet switch, general flow table abandons packet-switched domain and electricity respectively
Road switching domain, with foreshortened length, does not use virtual port (Virtual Port)；Circuit turns point
During group exchange, the virtual port exporting list item in circuit commutative field is mapped to corresponding packet-switched domain
In operation list item；During the exchange of packet switch shifting circuit, the operation list item in packet-switched domain reflects
It is mapped to corresponding circuits switching domain inputs the virtual port of list item.
Present invention SDN based on above-mentioned general flow table framework being supported, packet switch and circuit are handed over
The method changed, based on the SDN framework shown in Fig. 1, including application layer, key-course and data
Layer, key-course includes network controller, and the northbound interface of network controller connects application layer, south
To interfacing data layer；Specifically comprise the following steps that
The most initial new business flow enter in SDN (as WDM, SDH, OTN,
L2&L3 Switch, PTN, IP RAN, P-OTN, CR and other network element device receive
Circuit or packet-type Business Stream), owing to not having for this new stream in data Layer forwarding unit
The stream table of amount, described Business Stream is forwarded to the network controller of key-course by southbound interface.
S2. network controller judges type and the feature of described Business Stream, according to upper layer application,
Network strategy, network topology and Internet resources etc. calculate the forward-path of described Business Stream, and
Generate corresponding general flow table.
S3. network controller issues general flow table to all types of number of data Layer by southbound interface
According to forwarding unit, in data transfer equipment, set up the forwarding rule corresponding with general flow table, real
Now the path of new service flow is forwarded and Internet resources distribution.
The most described Business Stream forwards rule to complete packet friendship in data transfer equipment according to described
Change and circuit switching.Wherein, pure circuit switching stream table is: [＜ 00 ＞ ＜ IN；OUT ＞ ＜
＞] (＜ ＞ represent blank)；Pure packet switched streaming table: [＜ 11 ＞ ＜ ＞ ＜
IDENTIFIER；ACTION ＞]；Circuit turns packet switched streaming table: [＜ 01 ＞ ＜ IN；
OUT (Virtual Port) ＞ ＜ IDENTIFIER；ACTION (Virtual Port) ＞]；
Packet shifting circuit exchange current table is: [＜ 10 ＞ ＜ IN (Virtual Port)；OUT ＞ ＜
IDENTIFIER；ACTION (Virtual Port) ＞].
As it is shown on figure 3, be uniformly controlled packet switch and the first reality Circuit-switched for the present invention
Existing mode.Arranging unique one group of network controller Controller at network control layer, it passes through
Southbound interface unified management controls data network based on packet switch and with circuit switching is
The transmission net on basis, by northbound interface and collaborative sublayer (Orchestration Sub-layer)
It is connected.Collaborative sublayer has the overview of global network, by coordinating the behavior of heterogeneous networks
Realize seamless interactive operation and the optimization of teleservice, and the service request of application layer is turned
Change network request into and be handed down to network controller.
As shown in Figure 4, it is uniformly controlled packet switch for the present invention and Circuit-switched the second is real
Existing mode.Network control layer be respectively directed to bottom data net and transmit net arrange two groups the most only
Vertical network controller R-Controller and T-Controller.Each layer network is being carried out respectively
While control, the controller of two-tier network can be real-time by East and West direction interface or collaborative sublayer
Interactive information (such as routing information, link resource information, network topological information etc.), real
Seamless fused controlling between existing multitiered network.
The present invention is described in detail below by specific embodiment.
As it is shown in figure 5, exchange exemplary plot for first embodiment of the invention WDM.WDM ripple
Long Circuit-switched general flow table is [＜ 00 ＞ ＜ input port, input wavelength；Output port,
Output wavelength ＞ ＜ ＞].Assuming that the WDM business that wavelength is λ 3 is handed over by WDM wavelength
No. 2 port inputs of exchange device 1, according to upper layer application, network strategy, network topology and net
Network resource etc. calculates the forward-path of described Business Stream, and generates corresponding general flow table and be
[＜ 00 ＞ ＜ 2, λ 3；4, λ 37 ＞ ＜ ＞], i.e. wavelength be λ 37 WDM business from
No. 4 port outputs of WDM wavelength switching equipment 1.In like manner calculate WDM business to pass through
The general flow table that WDM wavelength switching equipment 2 generates is [＜ 00 ＞ ＜ 4, λ 37；7, λ 12
＞ ＜ ＞]；The most again calculate WDM business raw by WDM wavelength switching equipment 3
The general flow table become is [＜ 00 ＞ ＜ 1, λ 12；32, λ 10 ＞ ＜ ＞]；Until WDM
Multi-wavelength circuits exchange is complete.
As shown in Figure 6, for second embodiment of the invention TDM time slot circuit switching exemplary plot,
The general flow table form of its correspondence is: [＜ 00 ＞ ＜ input port, TDM signal type, open
Beginning time slot；Output port, TDM signal type, start time slot ＞ ＜ ＞].Signal type
It is that the TDM business of 10 is by TDM time gas exchange equipment 1 for STS-3c, beginning time slot
The input of No. 2 ports, be computed its generate corresponding general flow table for [＜ 00 ＞ ＜ 2,
STS-3c, 10；4, STS-3c, 10 ＞ ＜ ＞].Via TDM time gas exchange equipment 2
Forwarding, calculating and generating corresponding general flow table is [＜ 00 ＞ ＜ 5, STS-3c, 10；7, STS-3c,
6 ＞ ＜ ＞].Final encapsulation calculate generate corresponding general flow table be [＜ 00 ＞ ＜ 1,
STS-3c, 6；32, STS-3c, 1 ＞ ＜ ＞], i.e. final encapsulated signal type be STS-3c,
Start in the container that time slot is 1, from No. 32 port outputs of TDM time gas exchange equipment 3.
As it is shown in fig. 7, be third embodiment of the invention pure packet switch exemplary plot, it it is pure packet
Exchange example, the general flow table of its correspondence is: [＜ 11 ＞ ＜ ＞ ＜ identifier；Operation ＞].
The source IP address of tri-packet traffic flows of Web, Video and Voice be all 10.44.64.0 extremely
18, but the Transmission Control Protocol port numbers of Web service stream is 80, the UDP association of Video Business Stream
View port numbers is 1234, and the Transmission Control Protocol port numbers of Voice Business Stream is 5060.Web、
Tri-Business Streams of Video and Voice, after PSE 1 inputs, stamp three respectively
Virtual local area network tags vlan30, vlan50 and vlan75 are distinguish between, and with No. vlan work
For identifier, three Business Streams are forwarded.Article three, Business Stream is in PSE 1
General flow table is followed successively by: [＜ 11 ＞ ＜ ＞ ＜ IP_src=10.44.64.0/18, TCP80；
+ vlan30, Out P2 ＞], [＜ 11 ＞ ＜ ＞ ＜ IP_src=10.44.64.0/18, UDP1234；
+ vlan50, Out P2 ＞] and [＜ 11 ＞ ＜ ＞ ＜ IP_src=10.44.64.0/18, TCP5060；
+ vlan50, Out P2 ＞], it is defeated that the P2 port at PSE 1 synthesizes a Business Stream
Go out.When forwarding via PSE 2, two groups of traffic aggregations of Web and Video one,
Being exported by P3 port, Voice Business Stream is separately divided into one, P5 port export；Article three,
The general flow table of Business Stream is followed successively by: [＜ 11 ＞ ＜ ＞ ＜ vlan30, Out P3 ＞], [＜
11 ＞ ＜ ＞ ＜ vlan50, Out P3 ＞] and [＜ 11 ＞ ＜ ＞ ＜ vlan75, Out P5
＞].Finally, after tri-Business Streams of Web, Video and Voice peel off virtual local area network tags,
Exported by P4, P8 and P1 port of PSE 3 respectively, PSE 3
In the general flow table of three Business Streams be followed successively by: [＜ 11 ＞ ＜ ＞ ＜ vlan30；-vlan,
Out P4 ＞], [＜ 11 ＞ ＜ ＞ ＜ vlan50；-vlan, Out P8 ＞] and [＜ 11 ＞
＜ ＞ ＜ vlan75；-vlan, Out P5 ＞], wherein-vlan represents No. vlan.
As shown in Figure 8, mutually change for fourth embodiment of the invention circuit switching and packet switch
Exemplary plot.Packet switch shifting circuit exchange general flow table is: [＜ 10 ＞ ＜ inputs (Vport)；
Output ＞ ＜ identifier；Operation (being mapped to Vport) ＞]；Circuit switching turns packet switch and leads to
With stream table, [＜ 01 ＞ ＜ inputs；Output (Vport) ＞ ＜ identifier；(reflection is penetrated in operation
To Vport) ＞].The source IP address of tri-packet traffic flows of Web, Video and Voice is all
For 10.44.64.0 to 18, but the Transmission Control Protocol port numbers of Web service stream is 80, Video
The udp protocol port numbers of Business Stream is 1234, the Transmission Control Protocol port numbers of Voice Business Stream
It is 5060.Tri-packet traffic flows of Web, Video and Voice set from packet shifting circuit exchange
After standby input, stamp three virtual local area network tags vlan30, vlan50 and vlan75 respectively
It is distinguish between, and correspondence mappings is converted to virtual port VPort3, VPort7 and VPort9
Circuit Service stream, wherein Video Business Stream is mapped to 3 Circuit Service streams realizations extensively
Broadcast；Its general flow table is respectively as follows: [＜ 10 ＞ ＜ Vport3；11, VC4,1 ＞ ＜
IP_src=10.44.64.0/18, TCP80；+ vlan30, Map to Vport3) ＞], [＜ 10
＞ ＜ Vport7；22, VC4,7 ＞ ＜ IP_src=10.44.64.0/18, UDP1234；+ vlan50,
Map to Vport7) ＞], [＜ 10 ＞ ＜ Vport7；24, VC4,4 ＞ ＜
IP_src=10.44.64.0/18, UDP1234；+ vlan50, Map to Vport7) ＞], [＜
10 ＞ ＜ Vport7；30, VC4,10 ＞ ＜ IP_src=10.44.64.0/18, UDP1234；
+ vlan50, Map to Vport7) ＞], [＜ 10 ＞ ＜ Vport9；33, VC4,1 ＞ ＜
IP_src=10.44.64.0/18, TCP5060；+ vlan75, Map to Vport9) ＞].Warp
Being forwarded by pure circuit switching equipment, its general flow table is: [＜ 00 ＞ ＜ 2, VC4,1；1,
VC4,6 ＞ ＜ ＞], [＜ 00 ＞ ＜ 4, VC4,7；3, VC4,9 ＞ ＜ ＞],
[＜ 00 ＞ ＜ 8, VC4,4；9, VC4,7 ＞ ＜ ＞], [＜ 00 ＞ ＜ 6, VC4,
10；5, VC4,4 ＞ ＜ ＞], [＜ 00 ＞ ＜ 11, VC4,1；11, VC4,1 ＞
＜ ＞].Finally, tri-groups of Circuit Service streams of Web, Video and Voice are in circuit switching
It is reflected in turning PSE and is emitted back towards packet-type Business Stream, peel off virtual local area network tags,
And exported by P8, P1/P2/P3, P4 port respectively.Circuit switching turns the logical of packet switch
With stream table it is: [＜ 01 ＞ ＜ 28, VC4,6；Vport5 ＞ ＜ vlan30；Remap to Vport5,
-vlan, Out P8) ＞], [＜ 01 ＞ ＜ 10, VC4,9；Vport3 ＞ ＜ vlan50；Remap
To Vport3 ,-vlan, Out P1) ＞], [＜ 01 ＞ ＜ 15, VC4,7；Vport8 ＞
＜ vlan50；Remap to Vport8 ,-vlan, Out P2) ＞], [＜ 01 ＞ ＜ 20,
VC4,4；Vport2 ＞ ＜ vlan50；Remap to Vport2 ,-vlan, Out P3) ＞],
[＜ 01 ＞ ＜ 23, VC4,1；Vport7 ＞ ＜ vlan75；Remap to Vport7 ,-vlan,
Out P4) ＞].
The present invention is not limited to above-mentioned embodiment, for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications,
Within these improvements and modifications are also considered as protection scope of the present invention.This specification is not made in detail
The content described belongs to prior art known to professional and technical personnel in the field.
Claims (9)
1. a software defined network SDN framework is supported packet switch and Circuit-switched logical
With stream table, it is characterised in that: include switch type territory, circuit commutative field and packet-switched domain,
Described switch type territory includes that pure circuit switching, pure packet switch, circuit turn packet switch and divide
Group shifting circuit four kinds of signs of exchange；Described circuit commutative field includes that communication network L0/L1 layer is abstract
Input list item and output list item, input list item at least include input port and virtual port,
Output list item at least includes output port and virtual port；Described packet-switched domain includes telecommunications network
The abstract identifier list item of network L2/L2.5/L3/L4-L7 layer and operation list item, identifier list
Item at least include the Ethernet frame head of packet data streams, VLAN tag, multiprotocol label,
IP packet header and higher protocol fields, operation list item determines the packet data streams to matching identification symbol
The process action taked.
2. SDN framework as claimed in claim 1 is supported packet switch and Circuit-switched
General flow table, it is characterised in that: the list item of described circuit commutative field by the optical fiber of L0/L1 layer,
Wave division multiplexing WDM and time division multiplexing tdm circuit cross-overs connect that behavior is abstract to be formed；Packet
The list item of switching domain by the Ethernet exchanging of L2/L2.5/L3/L4-L7 layer, multiprotocol label switching,
L3 Switching, IP route and high-rise process data based on packet header identification forward behavior abstract
Form.
3. SDN framework as claimed in claim 2 is supported packet switch and Circuit-switched
General flow table, it is characterised in that: when WDM exchanges, the input list item bag of circuit commutative field
Include input port, input wavelength；Output list item includes output port, output wavelength；Described void
Intend port not use.
4. SDN framework as claimed in claim 2 is supported packet switch and Circuit-switched
General flow table, it is characterised in that: when TDM exchanges, the input list item bag of circuit commutative field
Include input interface, TDM signal type, start time slot；Output list item include output port,
TDM signal type, beginning time slot；Described virtual port is not used.
5. SDN framework as claimed in claim 1 is supported packet switch and Circuit-switched
General flow table, it is characterised in that: when circuit switching turns packet switch, defeated in circuit commutative field
The virtual port going out list item is mapped to the operation list item in corresponding packet-switched domain；Packet switch turns
During circuit switching, the operation list item in packet-switched domain is mapped in corresponding circuits switching domain input
The virtual port of list item.
6. SDN framework as claimed in claim 1 is supported packet switch and Circuit-switched
General flow table, it is characterised in that: the sign in described switch type territory is formed by two combination of bytes,
00 represents pure circuit switching, and 11 represent that pure packet switch, 01 indication circuit exchange turn packet and hand over
Changing, 10 represent the exchange of packet switch shifting circuit.
7. a SDN framework based on general flow table described in claim 1 being supported, packet is handed over
Changing and Circuit-switched method, SDN framework includes application layer, key-course and data Layer, control
Preparative layer includes network controller, and the northbound interface of network controller connects application layer, southbound interface
Connect data Layer, it is characterised in that comprise the steps:
The most initial new business flow enters in SDN, and described Business Stream is connect by south orientation
Mouth is forwarded to the network controller of key-course；
S2. network controller judges type and the feature of described Business Stream, calculates described industry
The forward-path of business stream, and generate corresponding general flow table；
S3. network controller issues general flow table to the data forwarding of data Layer by southbound interface
Equipment, sets up the forwarding rule corresponding with general flow table in data transfer equipment；
The most described Business Stream forwards rule to complete packet friendship in data transfer equipment according to described
Change and circuit switching.
8. SDN framework as claimed in claim 7 is supported packet switch and Circuit-switched
Method, it is characterised in that: being achieved in that of described method arranges a unique networking at key-course
Network controller, network controller controls data network by southbound interface unified management and transmits net,
It is connected with the collaborative sublayer in key-course by northbound interface；Collaborative sublayer has communication network
Overview, it is achieved the seamless interactive operation of teleservice and optimization, and by the industry of application layer
Business request is converted into network request and is handed down to network controller.
9. SDN framework as claimed in claim 7 is supported packet switch and Circuit-switched
Method, it is characterised in that: described method be achieved in that key-course arrange two groups the most only
Vertical network controller, is respectively directed to the data network of data Layer and transmits net, described two groups of networks
Controller passes through East and West direction interface or collaborative sublayer real time interaction information, and collaborative sublayer has communication
The overview of network, it is achieved the seamless interactive operation of teleservice and optimization, and will application
The service request of layer is converted into network request and is handed down to network controller.
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