CN107911297A - A kind of SDN network band control Path Setup method and apparatus - Google Patents
A kind of SDN network band control Path Setup method and apparatus Download PDFInfo
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- 238000012545 processing Methods 0.000 claims description 16
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
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Abstract
The embodiment of the present invention discloses a kind of SDN network band control Path Setup method and apparatus, is related to the communications field, is able to record the transmission port of OpenFlow switching equipment, to realize that the transmission path of In band band control messages obtains.This method, including：Establish and enable the first flow table, the first flow table is used to indicate to transfer to upper-layer protocol to handle for the message of local IP address purpose IP address；ARP request of the purpose IP address for the IP address of SDN controllers is sent, and after the arp response of the first flow table of matching is received, the port that record receives arp response is uplink exit port；Establish and enable the second flow table, the second flow table is used to indicate to transfer to key-course to handle port discovery message；After the port discovery message of other OpenFlow switching equipment transmission for receiving the second flow table of matching, record the IP address of other OpenFlow switching equipment, the port for receiving discovery message is recorded as downlink exit port corresponding with other OpenFlow switching equipment, and will be seen that message is forwarded from uplink exit port.
Description
Technical field
The embodiment of the present invention is related to the communications field, more particularly to a kind of SDN (Software Defined
Networking, software defined network) network band control Path Setup method and apparatus.
Background technology
SDN controllers are usually using LLDP (Link Layer Discovery Protocol, link layer hair in SDN network
Existing agreement) agreement detects and finds the network topology between switching equipment, ARP (Address are passed through by switching equipment
Resolution Protocol, address resolution protocol) agreement come find switching equipment connection SDN controllers (host).But
The operating system of part server is possible without actively sending ARP request, therefore the simple service relied on where SDN controllers
Device voluntarily issues ARP request to obtain the connection relation of SDN controllers and unreliable.
The business flow list of In-band (in band) network in SDN network is issued by SDN controllers, for controlling message to pass
Defeated control flow table can be established jointly with SDN controllers and OpenFlow switching equipment forwarding strategy or by
OpenFlow switching equipment voluntarily establish forwarding strategy.Matched somebody with somebody when SDN systems by SDN controllers with OpenFlow switching equipment and amounted to
With when establishing forwarding strategy, the mechanism of realization is that first voluntarily establish forwarding strategy makes each OpenFlow to OpenFlow switching equipment
Switching equipment is established with SDN controllers and connected, the control stream of its in-band after OpenFlow switching equipment are connected to controller
Table is laid equal stress on policy distribution of the new root according to SDN controllers by the adapter of SDN controllers, this method during adapter and
OpenFlow switching equipment easily cause the disconnection that control passage connects when wavy, cause OpenFlow switching equipment to depart from whole
The management and control of SDN controllers.And when In-band networks voluntarily establish forwarding strategy by OpenFlow switching equipment, usually issue
Control flow table be hide flow table, invisible to SDN controllers, the control flow table that SDN controllers can not be to In-band carries out pipe
Reason, can not also calculate the path of control message transmissions by In-band network-based control flow tables.
The content of the invention
The embodiment of the present invention provides a kind of SDN network band control Path Setup method and apparatus, is able to record
The transmission port of OpenFlow switching equipment, to realize that the transmission path of In-band band control messages obtains.
First aspect, provide a kind of SDN network band control Path Setup method, including：
OpenFlow switching equipment are established and enable the first flow table, and first flow table is used for instruction and is by purpose IP address
The message of local IP address transfers to upper-layer protocol to handle；
ARP request of the purpose IP address for the IP address of SDN controllers is sent, and is receiving matching first flow table
After arp response, the port that record receives the arp response is uplink exit port；
Establish and enable the second flow table, second flow table is used to indicate to transfer to key-course to handle port discovery message；
After the port discovery message for receiving other OpenFlow switching equipment transmission for matching second flow table, institute is recorded
State the IP address of other OpenFlow switching equipment, receive it is described find message port be recorded as with it is described other
The corresponding downlink exit port of OpenFlow switching equipment, and the discovery message is forwarded from the uplink exit port.
Second aspect, there is provided a kind of OpenFlow switching equipment, including：
Processing unit, for establishing and enabling the first flow table, first flow table is used to indicate that by purpose IP address be this
The message of machine IP address transfers to upper-layer protocol to handle；
Transmitting element, for sending the ARP request for the IP address that purpose IP address is SDN controllers, and is receiving matching
After the arp response of first flow table, the port that record receives the arp response is uplink exit port；
The processing unit, for establishing and enabling the second flow table, second flow table is used to indicate port discovery report
Text transfers to key-course to handle；
Receiving unit, the port discovery that other OpenFlow switching equipment of second flow table are sent is matched for receiving
Message；
The processing unit, is additionally operable to the IP address of record other OpenFlow switching equipment, the reception hair
The port of existing message is recorded as downlink exit port corresponding with other described OpenFlow switching equipment；
The transmitting element, is additionally operable to forward the discovery message from the uplink exit port.
The third aspect, there is provided a kind of SDN network, including above-mentioned OpenFlow switching equipment and SDN controllers.
In such scheme, first, OpenFlow switching equipment are established and enable the first flow table, wherein, the first flow table is used
Upper-layer protocol is transferred to handle for the message of local IP address purpose IP address in instruction；OpenFlow switching equipment send purpose
IP address is the ARP request of the IP address of SDN controllers, and after the arp response of the first flow table of matching is received, record receives
The port of arp response is uplink exit port；Then, OpenFlow switching equipment are established and enable the second flow table, and the second flow table is used
Key-course is transferred to handle port discovery message in instruction；OpenFlow switching equipment receive other of the second flow table of matching
After the port discovery message that OpenFlow switching equipment are sent, the IP address of other OpenFlow switching equipment is recorded, reception
It was found that the port of message is recorded as downlink exit port corresponding with other OpenFlow switching equipment, and it will be seen that message from uplink
Exit port forwards；Due to OpenFlow switching equipment by the above method have recorded message send uplink exit port and
Downlink exit port, therefore such scheme is able to record the transmission port of OpenFlow switching equipment, to realize In-band band internal controls
The transmission path of message processed obtains.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structure chart of SDN network provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of SDN network band control Path Setup method provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the OpenFlow switching equipment provided in an embodiment of the present invention to the pass-through mode of message；
Fig. 4 is a kind of structure chart of SDN switch provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
The system architecture and business scenario of description of the embodiment of the present invention are in order to which more clearly the explanation present invention is implemented
The technical solution of example, does not form the restriction for technical solution provided in an embodiment of the present invention, those of ordinary skill in the art
Understand, with the differentiation of system architecture and the appearance of new business scene, technical solution provided in an embodiment of the present invention is for similar
Technical problem, it is equally applicable.
The technical term of the application is described first as follows：
SDN(Software Defined Network)：Software defined network, is by Stanford Univ USA clean
A kind of new network of Emulex network innovation framework that slate seminar proposes, its core technology are OpenFlow agreements by by the network equipment
Chain of command and data surface separate, it is achieved thereby that the flexible control of network traffics, the innovation for core network and application carry
Good platform is supplied.Based on the SDN of OpenFlow protocol realizations, the data forwarding and key-course of switching equipment be it is separated,
Each new data flow through switching equipment has to pass through SDN controllers and is determined to make forwarding, can be with SDN controllers
These streams are checked according to default rule, the transmission path and stream of data flow are then formulated by SDN controllers
Reason strategy, so as to preferably control network.Due to it is such the characteristics of the SDN network based on OpenFlow agreements it is currently wide
General is applied in each data center.Since data forwarding and key-course separate, and the realization of key-course is concentrated to network
In SDN controllers in, thus there are two sets of networks to need to manage, business datum forwarding network and control message transfers net.
In-band：In-band management pattern, is common network management means, that is, controls message to use system with business datum
One physical channel is transmitted.In-band networks have the characteristics that deployment it is flexible, but its realize complexity and difficulty compared with
It is high.
Out-of-band：Outband management pattern, control message are passed from business datum using different physical channels
It is defeated.Out-of-band is significantly simpler to implement, but disposes and get up to need newly-built one to be individually used for control protocol transmission
Network, this can not meet the requirements under many business scenarios.
The above method is described in detail with reference to specific embodiment.With reference to shown in Fig. 1, the embodiment of the present invention should
For following SDN network, including：More OpenFlow switching equipment, at least a SDN controller, wherein every SDN controller
Control the forwarding data flow of one or more OpenFlow switching equipment；As shown in Figure 1, there is provided a kind of SDN network topology is as schemed
It is shown, including a SDN controller and four OpenFlow switching equipment SW1-SW4, SW1 and SDN controllers and SW2, SW4
It is connected；SW3 is connected with SW2 and SW4.
Based on above-mentioned SDN network, the embodiment of the present invention provides a kind of SDN network band control Path Setup method,
With reference to (the simply corresponding process of summary step wherein in attached drawing, particular content be subject to embodiment record) shown in Fig. 2, including such as
Lower step：
S101, OpenFlow switching equipment are established and enable the first flow table, and the first flow table is used to indicate purpose IP address
Upper-layer protocol is transferred to handle for the message of local IP address.
Before step S101, OpenFlow switching equipment receive the IP address of local IP address and SDN controllers
Configuration information.I.e., it is necessary first to configure the IP address for the SDN controllers that the local ip address of all SW and needs connect, institute
The local ip address for having SW is the same network segment.The IP address of SDN controllers and the local ip address of SW are either same network segment
May also be cross-network segment, if the local ip address of SDN controllers and SW are cross-network segments, it is also necessary to configure local ip address
Gateway is as next-hop.After the local ip address for configuring SW, SW1 (SW2, SW3, SW4) is established and is enabled the first flow table, will
Purpose IP address transfers to upper-layer protocol to handle for the message of local IP address, i.e. itself (SW1, SW2, SW3, SW4) is passed through in forwarding
Message when, if the purpose IP address of message is local ip address, SW1's (SW2, SW3, SW4) itself that message can above be sent
Protocol stack is handled, and is no longer forwarded on other ports.
S102, OpenFlow switching equipment transmission purpose IP address are the ARP request of the IP address of SDN controllers, and
After the arp response for receiving the first flow table of matching, the port that record receives arp response is uplink exit port.
Wherein, the ARP table of SDN controllers, Fig. 1 are may learn by performing step S102, OpenFlow switching equipment
Shown in SW1 due to being directly connected to SDN controllers, it can acquire the ARP table of SDN controllers first, and record SW1 receives ARP
The port of response is uplink exit port Port1.Other SW can progressively study be controlled to SDN after SW1 and SDN controllers establish connection
The ARP table of device processed, records the uplink exit port Port1 for each receiving arp response.The protocol stack cycle of SW1 (SW2, SW3, SW4)
Property transmission purpose IP address for SDN controllers IP address ARP request, untill acquiring the ARP table of SDN controllers.
In Fig. 1, the port1 of the port1 and SW2 of SW1 are shown, wherein other SW establish the mistake of connection with SDN controllers in addition to SW1
Journey is described below.
S103, OpenFlow switching equipment are established and enable the second flow table, and the second flow table is used to indicate port discovery report
Text transfers to key-course to handle.
S104, OpenFlow switching equipment receive the port that other OpenFlow switching equipment of the second flow table of matching are sent
It was found that after message, record the IP address of other OpenFlow switching equipment, receive find message port be recorded as and other
The corresponding downlink exit port of OpenFlow switching equipment, and will be seen that message is forwarded from uplink exit port.
Specifically, before step S104, the timing of OpenFlow switching equipment to all OpenFlow ports of the machine at the same time
Sending port finds message, and port discovery message is customized Ethernet message and carries local IP address.Port discovery message
Can be customized a kind of message of new EtherType in SDN network, it is used to find SDN controllers to OpenFlow
The downlink exit port of switching equipment, the IP address of SW itself, such as the port that SW2 is sent to SW1 are carried in port discovery message
It was found that carrying the IP address of SW2 itself in message, the SW1 for receiving this message identifies the owner of outgoing packet.SW to SDN is controlled
The message of the transmission in device direction is known as uplink message, and the corresponding exit port that message is forwarded from the SW is uplink exit port,
The message transmitted from SDN controllers to SW directions is known as downlink message, it is corresponding message is forwarded from the SW exit port be
Downlink exit port, this customized port discovery message are mainly used for finding the downlink exit port of each SW.After SW starts, write from memory
To all OpenFlow ports of the machine, sending port finds message at the same time during identification.Exemplary, SW1 receives SW2 by port2
The Port Profile message of transmission can determine that downlink the exit port port2, SW1 of corresponding SW2 receives what SW4 was sent by port3
Port Profile message can determine the downlink exit port port3 of corresponding SW4.
In such scheme, first, OpenFlow switching equipment are established and enable the first flow table, wherein, the first flow table is used
Upper-layer protocol is transferred to handle for the message of local IP address purpose IP address in instruction；OpenFlow switching equipment send purpose
IP address is the ARP request of the IP address of SDN controllers, and after the arp response of the first flow table of matching is received, record receives
The port of arp response is uplink exit port；Then, OpenFlow switching equipment are established and enable the second flow table, and the second flow table is used
Key-course is transferred to handle port discovery message in instruction；OpenFlow switching equipment receive other of the second flow table of matching
After the port discovery message that OpenFlow switching equipment are sent, the IP address of other OpenFlow switching equipment is recorded, reception
It was found that the port of message is recorded as downlink exit port corresponding with other OpenFlow switching equipment, and it will be seen that message from uplink
Exit port forwards；Due to OpenFlow switching equipment by the above method have recorded message send uplink exit port and
Downlink exit port, therefore such scheme is able to record the transmission port of OpenFlow switching equipment, to realize In-band band internal controls
The transmission path of message processed obtains.
Wherein, after SDN network band control Path Setup, with reference to shown in Fig. 3, OpenFlow switching equipment are to message
Pass-through mode is specific as follows：
S201, OpenFlow switching equipment are established and enable the 3rd flow table, and the 3rd flow table is used to indicate purpose IP address
Message for the IP address of SDN controllers is forwarded via uplink exit port.
The purpose IP address that S202, OpenFlow switching equipment receive the transmission of other OpenFlow switching equipment is SDN
After the ARP request of the IP address of controller, forwarded according to the 3rd flow table via uplink exit port.
S203, OpenFlow switching equipment are established and enable the 4th flow table, and the 4th flow table is used to indicate purpose IP address
Forwarded for the message of other OpenFlow switching equipment via downlink exit port.
The purpose IP address that S204, OpenFlow switching equipment receive the transmission of SDN controllers is handed over for other OpenFlow
After the arp response of the IP address of exchange device, forwarded according to the 4th flow table via downlink exit port.
Exemplary, by taking SW1 as an example, SW1 can realize turn of uplink message and downlink message by S201-S204
Hair, so after the ARP table that SW1 obtains SDN controllers, SW1 establishes other OpenFlow switching equipment by S201 to be controlled to SDN
The forwarding flow table of device processed, SW1 establish SDN controllers to the forwarding flow table of other OpenFlow switching equipment by S203, specifically
, if by the IP address that the message purpose IP address of SW1 is SDN controllers, this message is forwarded from Port1.If through
The message purpose IP address for crossing SW1 is the IP address of SW2, then this message is forwarded from Port2.So SW1 can be just
Really message of the forwarding SDN controllers to SW2 and SW4.SW2, SW3 and SW4 are controlled by other OpenFlow switching equipment and SDN
Device connection processed, wherein SW2, SW3 are connected by SW1 with SDN controllers, then after SW1 obtains the ARP table of SDN controllers, other
SW is then referred to the ARP table of step S101-S102 study SDN controllers, the purpose IP address that wherein SW2 and SW3 are sent
ARP request for the IP address of SDN controllers is forwarded to SDN controllers by SW1 by step S201, S202, arp response by
SW1 is forwarded to SW2 and SW3 respectively by step S203, S204.
In addition to cause SDN controllers to identify the connection relation with OpenFlow switching equipment in SDN network topology,
This method further includes：If OpenFlow switching equipment are the OpenFlow switching equipment being directly connected to SDN controllers；
OpenFlow switching equipment replace SDN controllers to send packet in messages, and gratuitous ARP is packaged with packet in messages please
Ask and the inbound port of packet in messages is the uplink exit port, so that SDN controllers are identified by packet in messages
Go out the connection relation with OpenFlow switching equipment.
Wherein, indicate that it is straight with SDN controllers by way of order line on the SW1 being directly connected to SDN controllers
Even；For not being connected OpenFlow switching equipment (such as SW2,3,4) with SDN controllers directly, directly connect with SDN controllers
The OpenFlow switching equipment (such as SW1) connect replace SDN controllers to be sent to OpenFlow switching equipment (such as SW2,3)
Packet in messages, specific SW1 can actively replace SDN controllers constantly to be sent by way of packet in freely
ARP request, so that SDN controllers identify the connection relation with OpenFlow switching equipment by packet in messages.
The discovery of SDN network topology, particularly for the topologys of OpenFlow switching equipment can both rely on LLDP agreements, can also be according to
SNMP (Simple Network Management Protocol, Simple Network Management Protocol) etc. is relied to find, can also be in SDN
Controller adds the topology of adjustment OpenFlow switching equipment, the topology of OpenFlow switching equipment wherein in SDN network manually
Discovery can use existing any technology, which is not described herein again.
The embodiment of the present invention provides a kind of OpenFlow switching equipment with reference to shown in Fig. 4, for implementing above-mentioned method
Embodiment, including：
Processing unit 41, for establishing and enabling the first flow table, first flow table is used for instruction and is by purpose IP address
The message of local IP address transfers to upper-layer protocol to handle；
Transmitting element 42, for sending the ARP request for the IP address that purpose IP address is SDN controllers, and is receiving
After the arp response of first flow table enabled with the processing unit 41, the port that record receives the arp response is uplink
Exit port；
The processing unit 41, for establishing and enabling the second flow table, second flow table is used to indicate port discovery
Message transfers to key-course to handle；
Receiving unit 43, the port discovery report that other OpenFlow switching equipment for receiving the second flow table of matching are sent
Text；
The processing unit 41, is additionally operable to the IP address of record other OpenFlow switching equipment, described in receiving
It was found that the port of message is recorded as downlink exit port corresponding with other described OpenFlow switching equipment；
The transmitting element 42, is additionally operable to forward the discovery message from the uplink exit port.
Optionally, the processing unit 41, is additionally operable to establish and enables the 3rd flow table, and the 3rd flow table is used for instruction will
Purpose IP address forwards for the message of the IP address of SDN controllers via the uplink exit port；
The transmitting element 42, is additionally operable to receive the mesh of other OpenFlow switching equipment transmission in the receiving unit
IP address for SDN controllers IP address ARP request after, forwarded according to the 3rd flow table via the uplink exit port
Go out；
The processing unit 41, is additionally operable to establish and enables the 4th flow table, and the 4th flow table is used to indicate destination IP
Address is that the message of other OpenFlow switching equipment is forwarded via the downlink exit port；
The transmitting element 42, is additionally operable to receive the purpose IP address of SDN controllers transmission in the receiving unit 43
After arp response for the IP address of other OpenFlow switching equipment, gone out according to the 4th flow table via the downlink
Port forwards.
Optionally, exchanged if the OpenFlow switching equipment are the OpenFlow being directly connected to the SDN controllers
Equipment；
The transmitting element 42, is additionally operable to replace SDN controllers to send packet in messages, the packet in messages
In to be packaged with gratuitous ARP request and the inbound port of the packet in messages be the uplink exit port so that the SDN is controlled
Device processed identifies the connection relation with the OpenFlow switching equipment by the packet in messages.
Optionally, the receiving unit 43, is additionally operable to receive the IP address of local IP address and the SDN controllers
Configuration information.
Optionally, the transmitting element 42, being additionally operable to timing, sending port is sent out at the same time to all OpenFlow ports of the machine
Existing message, the port discovery message is customized Ethernet message and carries local IP address.
In such scheme, in such scheme, first, OpenFlow switching equipment are established and enable the first flow table, its
In, the first flow table is used to indicate to transfer to upper-layer protocol to handle for the message of local IP address purpose IP address；OpenFlow is handed over
Exchange device sends ARP request of the purpose IP address for the IP address of SDN controllers, and is rung in the ARP for receiving the first flow table of matching
Ying Hou, the port that record receives arp response is uplink exit port；Then, OpenFlow switching equipment are established and enable second
Table, the second flow table are used to indicate to transfer to key-course to handle port discovery message；OpenFlow switching equipment receive matching second
After the port discovery message that other OpenFlow switching equipment of flow table are sent, with recording the IP of other OpenFlow switching equipment
The port for receiving discovery message, is recorded as downlink exit port corresponding with other OpenFlow switching equipment by location, and will be seen that
Message is forwarded from uplink exit port；Due to OpenFlow switching equipment by the above method have recorded message send uplink
Exit port and downlink exit port, therefore such scheme is able to record the transmission port of OpenFlow switching equipment, to realize In-
The transmission path of band band control messages obtains.
In addition, also providing a kind of calculating readable media (or medium), including carry out when executed in above-described embodiment
The computer-readable instruction of the operation of method.
In addition, a kind of computer program product is also provided, including above computer readable media (or medium).
It is to be understood that in various embodiments of the present invention, the size of the sequence number of above-mentioned each process is not meant to perform suitable
The priority of sequence, the execution sequence of each process should be determined with its function and internal logic, without the implementation of the reply embodiment of the present invention
Process forms any restriction.
Those of ordinary skill in the art may realize that each exemplary list described with reference to the embodiments described herein
Member and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical solution.Professional technician
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, can be with
Realize by another way.For example, apparatus embodiments described above are only schematical, for example, the unit
Division, is only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, equipment or unit
Close or communicate to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
In network unit.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units integrate in a unit.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment the method for the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (English full name:Read-only memory, English letter
Claim：ROM), random access memory (English full name：Random access memory, English abbreviation：RAM), magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
- A kind of 1. SDN network band control Path Setup method, it is characterised in that the described method includes：Establish and enable the first flow table, first flow table is used to indicate to transfer to purpose IP address for the message of local IP address Upper-layer protocol processing；ARP request of the purpose IP address for the IP address of SDN controllers is sent, and is receiving the ARP that matches first flow table After response, the port that record receives the arp response is uplink exit port；Establish and enable the second flow table, second flow table is used to indicate to transfer to key-course to handle port discovery message；Receive after matching the port discovery message that other OpenFlow switching equipment of second flow table are sent, record it is described its The IP address of his OpenFlow switching equipment, is recorded as handing over other described OpenFlow the port for finding message is received The corresponding downlink exit port of exchange device, and the discovery message is forwarded from the uplink exit port.
- 2. the method as described in claim 1, it is characterised in that the method further includes：Establish and enable the 3rd flow table, the 3rd flow table is used to indicate that by purpose IP address be the IP address of SDN controllers Message is forwarded via the uplink exit port；After receiving ARP request of the purpose IP address of other OpenFlow switching equipment transmission for the IP address of SDN controllers, Forwarded according to the 3rd flow table via the uplink exit port；Establish and enable the 4th flow table, it is that other described OpenFlow are exchanged that the 4th flow table, which is used to indicate by purpose IP address, The message of equipment is forwarded via the downlink exit port；The purpose IP address for receiving the transmission of SDN controllers is that the ARP of the IP address of other OpenFlow switching equipment is rung Ying Hou, forwards according to the 4th flow table via the downlink exit port.
- 3. method as claimed in claim 2, it is characterised in that if the OpenFlow switching equipment are to be controlled with the SDN The OpenFlow switching equipment that device is directly connected to, the method further include：The OpenFlow switching equipment replace SDN controllers to send packet in messages, are sealed in the packet in messages Inbound port equipped with gratuitous ARP request and the packet in messages is the uplink exit port, so that the SDN controllers Connection relation with the OpenFlow switching equipment is identified by the packet in messages.
- 4. according to claim 1-3 any one of them methods, it is characterised in that it is described establish and enable the first flow table it Before, the method further includes：Receive the configuration information of the IP address of local IP address and the SDN controllers.
- 5. according to the method described in claim 4, it is characterized in that, the method further includes：To all OpenFlow ports of the machine, sending port finds message at the same time for timing, and the port discovery message is customized Ethernet message and carrying local IP address.
- A kind of 6. OpenFlow switching equipment, it is characterised in that including：Processing unit, for establishing and enabling the first flow table, it is the machine IP that first flow table, which is used to indicate purpose IP address, The message of address transfers to upper-layer protocol to handle；Transmitting element, for sending the ARP request for the IP address that purpose IP address is SDN controllers, and is receiving described in matching After the arp response of first flow table, the port that record receives the arp response is uplink exit port；The processing unit, is additionally operable to establish and enables the second flow table, and second flow table is used to indicate port discovery message Key-course is transferred to handle；Receiving unit, the port discovery report that other OpenFlow switching equipment of second flow table are sent is matched for receiving Text；The processing unit, is additionally operable to the IP address of record other OpenFlow switching equipment, is reported the discovery is received The port of text is recorded as downlink exit port corresponding with other described OpenFlow switching equipment；The transmitting element, is additionally operable to forward the discovery message from the uplink exit port.
- 7. OpenFlow switching equipment according to claim 6, it is characterised in thatThe processing unit, is additionally operable to establish and enables the 3rd flow table, and the 3rd flow table is used for instruction and is by purpose IP address The message of the IP address of SDN controllers is forwarded via the uplink exit port；The transmitting element, with being additionally operable to receive the destination IP of other OpenFlow switching equipment transmission in the receiving unit After ARP request of the location for the IP address of SDN controllers, forwarded according to the 3rd flow table via the uplink exit port；The processing unit, is additionally operable to establish and enables the 4th flow table, and the 4th flow table is used for instruction and is by purpose IP address The message of other OpenFlow switching equipment is forwarded via the downlink exit port；The transmitting element, be additionally operable to the receiving unit receive the purpose IP address of SDN controllers transmission for it is described its After the arp response of the IP address of his OpenFlow switching equipment, forwarded according to the 4th flow table via the downlink exit port Go out.
- 8. OpenFlow switching equipment according to claim 7, it is characterised in that if the OpenFlow switching equipment are The OpenFlow switching equipment being directly connected to the SDN controllers；The transmitting element, is additionally operable to replace SDN controllers to send packet in messages, is encapsulated in the packet in messages It is the uplink exit port to have the inbound port of gratuitous ARP request and the packet in messages, so that the SDN controllers lead to Cross the packet in messages and identify connection relation with the OpenFlow switching equipment.
- 9. according to claim 6-8 any one of them OpenFlow switching equipment, it is characterised in thatThe receiving unit, is additionally operable to receive the configuration information of the IP address of local IP address and the SDN controllers.
- 10. OpenFlow switching equipment according to claim 9, it is characterised in that the transmitting element, is additionally operable to timing To all OpenFlow ports of the machine, sending port finds message at the same time, and the port discovery message is customized Ethernet message And carry local IP address.
- 11. a kind of SDN network, it is characterised in that including such as claim 6-10 any one of them OpenFlow switching equipment And SDN controllers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711167097.5A CN107911297B (en) | 2017-11-21 | 2017-11-21 | SDN network in-band control channel establishment method and device |
| PCT/CN2018/115495 WO2019100993A1 (en) | 2017-11-21 | 2018-11-14 | Sdn network in-band control channel establishment method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711167097.5A CN107911297B (en) | 2017-11-21 | 2017-11-21 | SDN network in-band control channel establishment method and device |
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| CN107911297A true CN107911297A (en) | 2018-04-13 |
| CN107911297B CN107911297B (en) | 2020-03-24 |
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| WO2019100993A1 (en) * | 2017-11-21 | 2019-05-31 | 迈普通信技术股份有限公司 | Sdn network in-band control channel establishment method and device |
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| CN113726548B (en) * | 2021-07-19 | 2024-02-02 | 电信科学技术第五研究所有限公司 | Method for automatically discovering two-layer network switching equipment and capable of remotely configuring and managing IP |
| CN114024968B (en) * | 2021-08-20 | 2023-05-26 | 绿盟科技集团股份有限公司 | Message sending method and device based on intermediate equipment and electronic equipment |
| CN115065494B (en) * | 2022-04-02 | 2023-11-14 | 北京北信源软件股份有限公司 | Method, device, equipment and medium for establishing network connection |
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| WO2019100993A1 (en) | 2019-05-31 |
| CN107911297B (en) | 2020-03-24 |
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