CN104734877B - A kind of method, apparatus and system obtaining configuration server information - Google Patents

A kind of method, apparatus and system obtaining configuration server information Download PDF

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Publication number
CN104734877B
CN104734877B CN201310724751.3A CN201310724751A CN104734877B CN 104734877 B CN104734877 B CN 104734877B CN 201310724751 A CN201310724751 A CN 201310724751A CN 104734877 B CN104734877 B CN 104734877B
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China
Prior art keywords
interchanger
configuration
query messages
configuration server
port
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CN201310724751.3A
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CN104734877A (en
Inventor
谈江
赵秀楚
冯强
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Hangzhou Huawei Digital Technologies Co Ltd
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Hangzhou Huawei Digital Technologies Co Ltd
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Priority to CN201310724751.3A priority Critical patent/CN104734877B/en
Priority to PCT/CN2014/094694 priority patent/WO2015096707A1/en
Publication of CN104734877A publication Critical patent/CN104734877A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The embodiment of the present invention provides a kind of method, apparatus and system for obtaining configuration server information, is related to the communications field, OF interchanger can be made to obtain the configuration information of OF configuration server automatically.The method for obtaining configuration server information, comprising: receive the query messages that OF configuration server is sent, the query messages include the parameter for identifying the OF configuration server；The configuration management port of the OF interchanger is set according to the query messages；The configuration information that the OF configuration server is obtained by the configuration management port establishes connection with the OF configuration server.The method, apparatus for obtaining configuration server information and system provided in an embodiment of the present invention are for obtaining information.

Description

A kind of method, apparatus and system obtaining configuration server information
Technical field
The present invention relates to the communications field more particularly to a kind of method, apparatus and system for obtaining configuration server information.
Background technique
OF(Open Flow, open flows) network is data to be controlled and turned based on open flows (Open Flow) agreement A kind of network of hair, including OF interchanger (Switch), OF configuration server and OF controller (Controller).OF interchanger After receiving data packet, the flow stream searching forward rule stored first according to the OF interchanger, if not finding forward rule, The data packet is then transmitted to OF controller, OF controller carries out centralized control to OF network, new stream is generated by OF controller Table carries new forward rule in the flow table, and OF controller gives new flow table issuance to the OF interchanger, so as to OF exchange Machine updates the flow table being locally stored.But before OF interchanger and OF controller establish connection, OF interchanger, which needs first to obtain OF, matches The configuration information of server is set to establish connection with OF configuration server, and further uses OF configuration and matches with management agreement from OF Parameter needed for establishing connection between server acquisition and OF controller is set, to establish connection with OF controller.
In the prior art, OF interchanger must preset the configuration information of OF configuration server, thus according to confidence is matched Breath establishes connection with OF configuration server, if OF interchanger is not previously set the configuration information of OF configuration server, OF is handed over Connection can not be established with OF configuration server by changing planes, and when the quantity of OF interchanger is more, OF configuration server is set by hand Configuration information workload it is very big and inflexible.
Summary of the invention
The embodiment of the present invention provides a kind of method, apparatus and system for obtaining configuration server information, OF can be made to hand over The configuration information for automatic acquisition OF configuration server of changing planes.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, providing a kind of method for obtaining configuration server information, it to be used for open flows OF interchanger, comprising:
The query messages that OF configuration server is sent are received, the query messages include for identifying the OF configuration service The parameter of device；
The configuration management port of the OF interchanger is set according to the query messages；
The configuration information that the OF configuration server is obtained by the configuration management port, with the OF configuration server Establish connection.
With reference to first aspect, the first can in realization mode,
The query messages for receiving OF configuration server and sending, specifically:
The query messages that the OF configuration server is sent are received from the first port of the OF interchanger；Then
The configuration management port that the OF interchanger is set according to the query messages, specifically:
According to the query messages, the configuration management port that the first port is the OF interchanger is set.
Mode can be realized in conjunction with the first, in second of achievable mode,
It is described according to the query messages be arranged the first port be the OF interchanger configuration management port include:
The OF interchanger is inquired with the presence or absence of configured configuration management port；
If the OF interchanger there are configured configuration management port, the configured configuration management port The priority of priority and the first port；
When the priority of the configured configuration management port is less than the priority of the first port, by described the Configuration management port of the Single port as the OF interchanger.
In conjunction with second of achievable mode, the third can in realization mode,
It include: the priority of the OF configuration server in the query messages, then
Before the priority of the configured configuration management port and the priority of the first port, The method also includes:
Priority of the priority of the OF configuration server as the first port is obtained in the query messages.
With reference to first aspect, first mode can be realized to the third, in the 4th kind of achievable mode, the query messages It include: jump limits value, the hop count jumped limits value and be used to indicate the query messages, then
Before the configuration management port that the OF interchanger is arranged according to the query messages, the method is also wrapped It includes:
Determine whether the jump limits value in the query messages is equal to zero；
If the jump limits value in the query messages is equal to zero, the query messages are abandoned；
If the jump limits value in the query messages is not equal to zero, the jump limits value updated in the query messages is current Jump limits value -1.
With reference to first aspect, first to fourth kind of achievable mode, it is described to be matched by described in the 5th kind of achievable mode The configuration information that management port obtains the OF configuration server is set, establishes connection with the OF configuration server, comprising:
Response message is generated, the response message includes the identity of the OF interchanger；
By the configuration management port, the response message is sent to the OF configuration server, in order to the OF Configuration server generates notice message according to the response message, and the notice message includes the configuration of the OF configuration server Information；
The notice message that the OF configuration server is sent is received by the configuration management port；
It is established according to the configuration information of the OF configuration server in the notice message and the OF configuration server Connection.
Second aspect provides a kind of method of offer configuration server information, is used for OF configuration server, comprising:
Query messages are generated, the query messages include the parameter for identifying the OF configuration server；
The query messages are sent to OF interchanger, in order to which the OF interchanger is according to query messages setting The configuration management port of OF interchanger and the configuration information that the OF configuration server is obtained by the configuration management port, with The OF configuration server establishes connection.
In conjunction with second aspect, the first can in realization mode,
It include: the priority of the OF configuration server, the priority of the OF configuration server in the query messages If for the OF interchanger there are configured configuration management port, and the priority of the configured configuration management port Less than the OF configuration server priority when, using the port for receiving the query messages as the OF interchanger Configuration management port, and set the priority of the configuration management port to the priority of the OF configuration server.
In conjunction with second aspect or the first can realize mode, in second of achievable mode, wrapped in the query messages It includes: jumping limits value, the hop count jumped limits value and be used to indicate the query messages, so that the OF interchanger is described When jumping limits value equal to zero, the query messages are abandoned, when the jump limits value is not equal to zero, updating the jump limits value is When front jumping limits value -1.
In conjunction with second aspect, the first to second achievable mode, can be handed over described to OF in realization mode at the third It changes planes after sending the query messages, the method also includes:
The response message that the OF interchanger is sent by the configuration management port is received, the response message includes institute State the identity of OF interchanger；
Notice message is generated according to the response message, the notice message includes the OF configuration server with confidence Breath；
The notice message is sent to the OF interchanger, in order to which the OF interchanger is according in the notice message The configuration information of the OF configuration server and the OF configuration server establish connection.
The third aspect provides a kind of open flows OF interchanger, comprising:
First receiving unit, for receiving the query messages of OF configuration server transmission, the query messages include to be used for Identify the parameter of the OF configuration server；
Setting unit, for the configuration management port of the OF interchanger to be arranged according to the query messages；
First acquisition unit, for obtaining the configuration information of the OF configuration server by the configuration management port, Connection is established with the OF configuration server.
In conjunction with the third aspect, the first can in realization mode,
First receiving unit is specifically used for:
The query messages that the OF configuration server is sent are received from the first port of the OF interchanger；Then
The setting unit is specifically used for:
According to the query messages, the configuration management port that the first port is the OF interchanger is set.
Mode can be realized in conjunction with the first, in second of achievable mode,
The setting unit is specifically used for:
The OF interchanger is inquired with the presence or absence of configured configuration management port；
If the OF interchanger there are configured configuration management port, the configured configuration management port The priority of priority and the first port；
When the priority of the configured configuration management port is less than the priority of the first port, by described the Configuration management port of the Single port as the OF interchanger.
In conjunction with second of achievable mode, the third can in realization mode,
It include: the priority of the OF configuration server in the query messages, then
The OF interchanger further include:
Second acquisition unit, for being obtained in the query messages described in the priority conduct of the OF configuration server The priority of first port.
Mode can be realized to the third in conjunction with the third aspect, first, in the 4th kind of achievable mode, the query messages It include: jump limits value, the hop count jumped limits value and be used to indicate the query messages, then
The OF interchanger further include:
Whether determination unit, the jump limits value for determining in the query messages are equal to zero；
Discarding unit abandons the query messages if being equal to zero for the jump limits value in the query messages；
Updating unit updates in the query messages if being not equal to zero for the jump limits value in the query messages Jumping limits value is when front jumping limits value -1.
In conjunction with the third aspect, first to fourth kind of achievable mode, in the 5th kind of achievable mode, the OF interchanger Further include:
Generation unit, for generating response message, the response message includes the identity of the OF interchanger；
Transmission unit, for sending the response message to the OF configuration server by the configuration management port, In order to which the OF configuration server generates notice message according to the response message, the notice message includes the OF configuration The configuration information of server；
Second receiving unit, for receiving the described logical of the OF configuration server transmission by the configuration management port Accuse message；
Unit is established, for matching according to the configuration information of the OF configuration server in the notice message with the OF It sets server and establishes connection.
Fourth aspect provides a kind of OF configuration server, comprising:
First generation unit, for generating query messages, the query messages include for identifying the OF configuration service The parameter of device；
First transmission unit, for sending the query messages to OF interchanger, in order to which the OF interchanger is according to institute Query messages are stated the configuration management port of the OF interchanger is arranged and obtains the OF configuration by the configuration management port The configuration information of server establishes connection with the OF configuration server.
In conjunction with fourth aspect, the first can in realization mode,
It include: the priority of the OF configuration server, the priority of the OF configuration server in the query messages If for the OF interchanger there are configured configuration management port, and the priority of the configured configuration management port Less than the OF configuration server priority when, using the port for receiving the query messages as the OF interchanger Configuration management port, and set the priority of the configuration management port to the priority of the OF configuration server.
In conjunction with fourth aspect or the first can realize mode, in second of achievable mode, wrapped in the query messages It includes: jumping limits value, the hop count jumped limits value and be used to indicate the query messages, so that the OF interchanger is described When jumping limits value equal to zero, the query messages are abandoned, when the jump limits value is not equal to zero, updating the jump limits value is When front jumping limits value -1.
In conjunction with fourth aspect, the first to second achievable mode, the third can be in realization mode, the OF configuration clothes Business device further include:
Receiving unit, the response message sent for receiving the OF interchanger by the configuration management port are described Response message includes the identity of the OF interchanger；
Second generation unit, it is described for generating notice message according to the received response message of the receiving unit Notice message includes the configuration information of the OF configuration server；
Second transmission unit disappears for sending the notice that second generation unit generates to the OF interchanger Breath, in order to which the OF interchanger is matched according to the configuration information of the OF configuration server in the notice message with the OF It sets server and establishes connection.
5th aspect, provides a kind of communication system, comprising:
At least one OF configuration server and at least one OF interchanger,
The OF configuration server includes for identifying the OF configuration clothes for generating query messages, the query messages The parameter of business device；The query messages are sent to the OF interchanger；
The OF interchanger is used to receive the query messages of OF configuration server transmission；It is set according to the query messages Set the configuration management port of the OF interchanger；By the configuration management port obtain the OF configuration server with confidence Breath, establishes connection with the OF configuration server.
, can be in realization mode at the first in conjunction with the 5th aspect, the OF interchanger is specifically used for:
The OF interchanger is inquired with the presence or absence of configured configuration management port；
If there are configured configuration management ports for the OF interchanger, the OF configuration is obtained in the query messages Priority of the priority of server as first port, the priority of the configured configuration management port with it is described The priority of first port, wherein the first port is the port that the OF interchanger receives the query messages；
When the priority of the configured configuration management port is less than the priority of the first port, by described the Configuration management port of the Single port as the OF interchanger.
Mode can be realized in conjunction with the first of the 5th aspect or the 5th aspect, in second of achievable mode, the OF Interchanger is also used to generate response message, and the response message includes the identity of the OF interchanger, passes through the configuration Management port sends the response message to the OF configuration server；
The OF configuration server be also used to receive the OF interchanger sent by the configuration management port it is described Response message generates notice message according to the response message, and the notice message includes the configuration of the OF configuration server Information sends the notice message to the OF interchanger；
The OF interchanger is also used to receive by the configuration management port described in the OF configuration server transmission Notice message is established according to the configuration information of the OF configuration server in the notice message and the OF configuration server Connection.
The embodiment of the present invention provides a kind of method, apparatus and system for obtaining configuration server information.The acquisition is matched The method for setting server info, comprising: OF interchanger receives the query messages that OF configuration server is sent, and query messages include to use In the parameter of mark OF configuration server；The configuration management port of OF interchanger is set according to query messages, passes through configuration management Port obtains the configuration information of OF configuration server, establishes connection with the OF configuration server.OF interchanger is according to receiving The query messages that send of OF configuration server the configuration management port of the OF interchanger is set, by configuration management port with The OF configuration server establishes connection, the configuration information of OF configuration server is obtained, so as to obtain OF interchanger automatically The configuration information for taking OF configuration server, avoid by hand setting OF configuration server configuration information heavy workload and not enough Flexible problem.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 provides a kind of method flow diagram for obtaining configuration server information for the embodiment of the present invention；
Fig. 2 is provided for the embodiment of the present invention and a kind of is provided the method flow diagram of configuration server information；
Fig. 3 provides another method flow diagram for obtaining configuration server information for the embodiment of the present invention；
Fig. 4 provides a kind of OF schematic network structure for the embodiment of the present invention；
Fig. 5 provides a kind of OF switch architecture schematic diagram for the embodiment of the present invention；
Fig. 6 provides another OF switch architecture schematic diagram for the embodiment of the present invention；
Fig. 7 provides a kind of OF configuration server structural schematic diagram for the embodiment of the present invention；
Fig. 8 provides another OF configuration server structural schematic diagram for the embodiment of the present invention；
Fig. 9 provides a kind of communication system schematic diagram for the embodiment of the present invention；
Figure 10 provides another OF switch architecture schematic diagram for the embodiment of the present invention；
Figure 11 provides another OF switch architecture schematic diagram for the embodiment of the present invention；
Figure 12 provides another OF configuration server structural schematic diagram for the embodiment of the present invention；
Figure 13 provides another OF configuration server structural schematic diagram for the embodiment of the present invention；
Figure 14 provides another communication system schematic diagram for the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of method for obtaining configuration server information, is used for OF interchanger, as shown in Figure 1, Include:
Step 101 receives the query messages that OF configuration server is sent, and the query messages include for identifying the OF The parameter of configuration server.
Optionally, OF interchanger is communicated with OF configuration server by first network, and the first network can be IP(Internet Protocol, Internet protocol) network, it is used for transmission between OF interchanger and OF configuration server and is led to Message needed for letter, the transmission devices such as including router, the router in the first network are connected with each other.OF configuration server is raw At query messages, the query messages are sent to OF interchanger by the first network, which includes for identifying The parameter of OF configuration server is stated, OF interchanger receives described in the transmission of OF configuration server from the first port of the OF interchanger Query messages, the first port are the OF interchanger that OF interchanger is connected with the edge router in the first network Any one port.OF interchanger is connected with the edge router in the first network, and the edge router accesses Router is the router positioned at the first network edge.
It should be noted that the query messages include EUI-64(64-bit Extended Unique Identifier, 64 Bits Expanding unique identifiers), i.e. 64 global identifiers, for OF configuration server described in unique identification Identity；IP address, for identifying the unique identities of OF configuration server, in order to which OF interchanger distinguishes different OF configuration clothes Business device；HL(Hop Limit jumps limitation) value, it is used to indicate the hop count of the query messages；Priority (priority) is used In the priority of mark OF configuration server；MAC(Media Access Control, media access control) address, for marking Know the unique identities of OF configuration server, MAC Address can be also used for the OF equipment such as unique identification OF interchanger, OF controller Unique identities.
Step 102, the configuration management port that the OF interchanger is set according to the query messages.
Disappeared in OF interchanger using the inquiry that the first port of the OF interchanger receives the transmission of OF configuration server After breath, the configuration management port of the OF interchanger is arranged according to the query messages for OF interchanger.Specifically, firstly, OF is handed over It changes planes and inquires the OF interchanger with the presence or absence of configured configuration management port, if there are configured configuration managements for OF interchanger Port obtains priority of the priority of the OF configuration server as the first port in the query messages, than The priority of the configured configuration management port and the priority of the first port, when the configured configuration pipe When the priority of reason port is less than the priority of the first port, using the first port as the configuration of the OF interchanger Management port.
It should be noted that before the configuration management port of the OF interchanger is set according to the query messages, it is first First, OF interchanger is it needs to be determined that whether the jump limits value in the query messages is equal to zero, if the jump in the query messages limits Value is equal to zero, then abandons the query messages, if the jump limits value in the query messages is not equal to zero, updates in the query messages Jump limits value be when front jumping limits value -1.
Step 103, the configuration information that the OF configuration server is obtained by the configuration management port, match with the OF It sets server and establishes connection.
OF interchanger according to the query messages be successfully arranged the OF interchanger configuration management port and then according to The flow stream searching forward rule stored in OF interchanger, the flow table include the forward rule, and the forward rule is OF friendship It changes planes required forward-path when carrying out interacting message between OF controller.If not finding matched flow table, OF Interchanger generates response message, and the response message includes the identity of the OF interchanger.Then, OF interchanger is by being somebody's turn to do The configuration management port of OF interchanger sends the response message to OF configuration server, in order to OF configuration server according to The response message generates notice message, and the notice message includes the configuration information of the OF configuration server, furthermore, OF exchange Machine receives the notice message that OF configuration server is sent by the configuration management port, obtains the OF configuration server Configuration information, connection is established according to the configuration information of the OF configuration server in the notice message and OF configuration server.
So, OF interchanger is arranged the OF according to the query messages that the OF configuration server received is sent and exchanges The configuration management port of machine establishes connection by configuration management port and the OF configuration server, obtains OF configuration server Configuration information, so as to make OF interchanger obtain the configuration information of OF configuration server automatically, avoid by hand setting OF The heavy workload of the configuration information of configuration server and inflexible problem.
The embodiment of the present invention provides a kind of method of offer configuration server information, OF configuration server is used for, such as Fig. 2 institute Show, comprising:
Step 201 generates query messages, and the query messages include the parameter for identifying the OF configuration server.
It should be noted that the query messages include EUI-64, i.e. 64 global identifiers are matched for unique identification OF Set the identity of server；IP address, for identifying the unique identities of OF configuration server, in order to OF interchanger distinguish it is different OF configuration server；HL value is used to indicate the hop count of the query messages；Priority (priority), for identifying OF The priority of configuration server；MAC Address, for identifying the unique identities of OF configuration server, MAC Address be can be also used for only The unique identities of the OF equipment such as one mark OF interchanger, OF controller.
Wherein, if there are configured configuration pipes for OF interchanger for the priority of OF configuration server in the query messages Manage port, and the priority of the configured configuration management port be less than the OF configuration server priority when, OF hand over It changes planes using the port for receiving the query messages as the configuration management port of the OF interchanger, and the configuration is managed The priority of reason port is set as the priority of the OF configuration server.The jump limits value is used to indicate the query messages Hop count, so as to OF interchanger the jump limits value be equal to zero when, abandon the query messages, the jump limits value not When equal to zero, updating the jump limits value is when front jumping limits value -1.
Step 202 sends the query messages to OF interchanger, in order to which the OF interchanger is according to the query messages The configuration management port of the OF interchanger is set and matching for the OF configuration server is obtained by the configuration management port Confidence breath, establishes connection with the OF configuration server.
OF configuration server is communicated with OF interchanger by first network, and the first network can be IP network, It is used for transmission and carries out communicating required message between OF interchanger and OF configuration server, the transmission devices such as including router should Router in first network is connected with each other.After OF configuration server generates query messages, by the first network to OF Interchanger sends the query messages.
It should be noted that OF configuration server generate query messages to OF interchanger send the query messages it Before, OF interchanger needs are actively added specific multicast group after powering on, in order to which OF configuration server is looked into the transmission of OF interchanger Message is ask, so that OF configuration server is communicated with OF interchanger by first network.Firstly, the edge road in first network IGMP(Internet Group Management Protocol, Internet Group Management Protocol are opened by device) function, then, institute It states edge router and sends IGMP REQ(Internet Group according to OF interchanger of the preset time into OF network Management Protocol Request, internet igmpinternet request) message, OF interchanger by with the side Any one port in the port for the OF interchanger that edge router is directly connected to receives the edge router IGMP REQ message, it is any described in port of the OF interchanger by the OF interchanger being directly connected to the edge router A port is to edge router IGMP REP(Internet Group Management Protocol Respond, internet igmpinternet response) message, the edge router receive IGMP REP message after, successfully OF is handed over It changes planes and specific multicast group is added.The router in the first network is opened into PIM-SM(Protocol again Independent Multicast-Sparse Mode, sparse mode independent multicast) function, the router in the first network Multicast forwarding path is established according to the message that PIM-SM agreement and IGMP agreement are got, so that the routing in the first network Device is connected with each other, in order to which OF configuration server sends message to OF interchanger by the first network.The OF network includes First network, at least one OF configuration server and at least one OF interchanger.
After OF configuration server sends the query messages to OF interchanger, OF interchanger receives OF configuration service The configuration management port of OF interchanger, OF exchange are arranged according to the query messages for the query messages that device is sent, OF interchanger After the configuration management port is successfully arranged in machine, according to the flow stream searching forward rule stored in OF interchanger, the inquiry is forwarded Message generates response message if not finding matched flow table, sends the response message to OF configuration server, OF matches It sets server and receives the response message that OF interchanger is sent by the configuration management port, the response message includes the OF Then the identity of interchanger generates notice message according to the response message, the notice message includes the OF configuration clothes The configuration information of business device sends the notice message to OF interchanger, in order to which OF interchanger is according to the institute in the notice message The configuration information and OF configuration server for stating OF configuration server establish connection.
So, firstly, then OF configuration server, which generates query messages, sends the query messages to OF interchanger, In order to which the configuration management port of OF interchanger is arranged according to the query messages in OF interchanger and passes through the configuration management end Mouth obtains the configuration information of the OF configuration server, connection is established with the OF configuration server, so as to exchange OF Machine obtains the configuration information of OF configuration server automatically, avoids the workload of the configuration information of setting OF configuration server by hand Big and inflexible problem.
The embodiment of the present invention provides a kind of method for obtaining configuration server information, for OF interchanger and OF configuration service Device, OF configuration server and OF interchanger are based on OF network and carry out interacting message, and OF network includes first network, it is assumed that the first net Network is IP network, which includes the transmission devices such as router, and is connected with each other between router.As shown in Figure 3, comprising:
Step 301, OF interchanger are actively added specific multicast group after powering on.
Multicast transmission is a kind of communication mode of point-to-multipoint transmission, that is, there is a sender and at least two and receive Person, for the recipient in same multicast group, the multicast address that all recipients use is identical, and one sender is to institute It states at least two recipients and sends message, if the data content of the message is identical, sender need to only generate the number of a message According to packet, the data packet of the message is sent to all recipients that the same multicast group is added, the same multicast group is added All recipients can receive the data packet of the message, i.e. the address of multicast group middle port or identifier is all multicast The address of the destination address that message or data frame are sent, the port of each recipient is the same, is in same multicast group Recipient.The recipient can also send to the router in first network and request, and request is added or exits the multicast Group, the router in first network selectively replicate and transmit the data packet of message, i.e., only by the message in multicast group Data packet be transferred to the recipient of the multicast group, the recipient not in multicast group does not receive the data of the message Packet.
It should be noted that Class D IP address, the Class D IP address range can be used in the purpose IP address of multicast message It is from 224.0.0.0 to 239.255.255.255, i.e., the purpose IP address of the data packet of message is not the IP of a recipient Location, but multicast ip address are an address fields, and there can be no the source IP address fields in IP packet for the D class address.Such as it is single The communication mode for being transmitted as point-to-point transmission is broadcast, is that a data packet is routed to purpose IP address, the list from source IP address The source IP address and purpose IP address for broadcasting transmission are a specific IP address.The same multicast group is added in all recipients Interior, the data packet for carrying the message of multicast group address is transferred to after multicast group by first network to be immediately begun to the multicast group Interior all recipients are transmitted, and all recipients in the multicast group can receive the data of the message Packet.And the recipient in multicast group is dynamically, recipient can be added or leave at any time multicast group.Similarly, MAC Location also must be multicast mac address, and multicast mac address and multicast ip address are corresponding, and the high 24bit of multicast mac address is 0x01005e, the low 23bit of multicast mac address are the low 23bit of multicast ip address.It should be noted that IP address 224.0.0.0~224.0.0.255 is reserved multicast address, i.e., permanent group address, and IP address 224.0.0.0 reservation does not divide Match, other addresses are used for Routing Protocol；IP address 224.0.1.0~224.0.1.255 is public multicast address, be can be used for Internet；IP address 224.0.2.0~238.255.255.255 is the available multicast address of user, i.e., interim group address；IP Location 239.0.0.0~239.255.255.255 is local management multicast address.
Assume that the sender can be OF configuration server in the embodiment of the present invention, the recipient can be OF exchange Machine, it is assumed that OF configuration server carries out interacting message, IP network IP network with OF interchanger in the way of multicast transmission The transmission devices such as including router, the router in the IP network are connected with each other.Pass through in OF interchanger and OF configuration server Before IP network carries out interacting message, OF interchanger needs are actively added specific multicast group after powering on.
Specifically, edge router, that is, the couple in router, is to be located at firstly, edge router opens IGMP function The router at the IP network edge, the router positioned at the IP network center is core router, in practical application, edge routing Device and core router are relative concepts, belong to router, but edge router and core router have it is different big Small and capacity, the core router can be the edge router in the bigger network of opposite IP network.IGMP is interconnection A multicast protocol in fidonetFido family, the multicast protocol include group membership's relationship between multicast member and router Multicast routing protocol between agreement and router and router, the IGMP are group membership's association protocol, are used for and edge road Connection is established between the multicast member being connected directly by device, multicast can be carried out between the multicast member in different segment Multicast group membership is safeguarded in communication, but router needs support multicast functionality, IGMP Information encapsulation in IP packet, In IP packet the protocol number of the IP of IGMP information be 2, the multicast member can at an arbitrary position, any time, sum not Restrictively it is added or exits multicast group.
Then, the edge router sends IGMP according to the OF interchanger into OF network of preset period of time Specific multicast group is added for OF interchanger in REQ message, and the OF network is based on open flows (Open Flow) agreement pair A kind of network that data are controlled and forwarded, including OF interchanger, OF configuration server and OF controller, there are also hand over for OF It changes planes and establishes the IP network of connection and interacting message with OF configuration server, the specific multicast group is that OF interchanger is set in advance The multicast group set, as OF interchanger pre-set multicast address section, and the preset time can be 1 minute or 2 minutes.
It is any one in port of the OF interchanger by the OF interchanger being directly connected to the edge router again After a port receives the IGMP REQ message of the edge router, the OF interchanger with the edge again by routing Any one port described in the port for the OF interchanger that device is directly connected to disappears to the edge router IGMPREP Successfully specific multicast group is added in the OF interchanger by breath.
Step 302, router establish multicast forwarding path.
Assume that the router in the IP network opens PIM-SM function in the embodiment of the present invention, the PIM-SM is because of spy A multicast protocol in fidonetFido family, i.e. multicast routing protocol between router and router, the routing in IP network Device establishes multicast forwarding path according to the information that PIM-SM agreement and IGMP agreement obtain, so that the router in IP network is mutual Connection, in order to which OF configuration server sends message to OF interchanger by the IP network.Router in the IP network is built The detailed process of vertical multicast forwarding path is the prior art, and details are not described herein for the embodiment of the present invention.In subsequent step, OF exchange Machine and the interacting message of OF configuration server are required to the forwarding of router in the IP network.
Step 303, OF configuration server generate query messages.
Query messages include ethernet layer information, IP layers of information, application layer message.The format of the query messages can be as Shown in table 1.
1 query messages format of table
Specifically, as shown in table 1, the application layer message of the query messages includes: EUI-64 field, i.e., 64 global marks Know symbol field, which is used for the identity of unique identification OF configuration server, because when the query messages pass through IP network In router forwarding when, the target MAC (Media Access Control) address for including in the ethernet layer information may be modified as institute by the router The MAC Address of router is stated, therefore the EUI-64 of the identity of unique identification OF configuration server is that the query messages are necessary The field of carrying, the EUI-64 field can be also used for the identity of the OF equipment such as unique identification OF interchanger, OF controller；Version This number (Version) field, for identifying the version information of configuration and management agreement, the configuration and management agreement are OF configuration Server and OF interchanger carry out agreement, the i.e. content including the query messages used in interacting message；Message class Type (Type) field, for identifying the type of message, different values of message types indicates different type of messages in the field, shows Example, if value of message types is designated as query messages for 0, if value of message types is designated as response message for 1, if value of message types It is designated as notice message for 2, therefore, the message type field of the query messages is 0 in embodiments of the present invention；HL value word Section, for identifying the hop count of the query messages, for the field that the query messages must carry, in the HL value field not The different hop count with numerical value query messages；Priority (priority) field, for identifying OF configuration server Priority, the field that must be carried for the query messages；Interchanger list length (Switch list length) field is used The length of interchanger list in instruction configuration and management agreement can use the integer representation more than or equal to 1, for example, should Numerical value is 8 in interchanger list length field, then it represents that there are the information of 8 interchanger lists in configuration and management agreement；School It tests and (Checksum) field, for verifying correctness of the query messages in transmission process.Flag bit (Flags) word Section whether there is MAC Address, MAC Address mask (MAC Mask), the address IPv4, IPv4 address mask for indicating (IPv4Mask), the address IPv6, IPv6 address mask (IPv6Mask), data link address (Data Path ID), data-link Road address mask (Data Path ID Mask) field, the flag bit field can be eight, usually be indicated with 1, with 0 table Show nothing, if the MAC Address, the address IPv4, the address IPv6, data link address in the flag bit field exist, corresponding word Mask (Mask) value all 1 of section, if MAC Address, the address IPv4, the address IPv6, data link in the flag bit Location is not present, then omits the mask field of the corresponding field and the field, and by corresponding positions in flag bit (Flags) field Set 0；Linktype (Link Type) field indicates OF configuration server connection type, link port (Link Port) field Indicate OF configuration server connectivity port, the Linktype field and the chain is not used in query messages in the present embodiment Road port field.
The ethernet layer information includes: Dst MAC(Destination Address Media Access Control, purpose media access control) address field, it is described when the query messages being sent to OF interchanger for identifying The MAC(Media Access Control for the OF interchanger that query messages carry, media access control) address；Src MAC(Source Address Media Access Control, source media access control) address field, it is sent for identifying The MAC Address of the OF configuration server of the query messages.
The IP layers of information includes: Dst IP(Destination Internet Protocol, purpose Internet protocol) Address field, when the query messages being sent to OF interchanger for identifying, the OF that the query messages carry is exchanged The IP address of machine；Src IP(Source Internet Protocol, source internet protocol) address field, match for identifying OF The IP address of server is set, in order to which there are OF interchangers described when at least two OF configuration servers can distinguish different OF Configuration server.
Step 304, OF configuration server send query messages to OF interchanger.
OF configuration server carries out interacting message by IP network with OF interchanger.Inquiry is generated in OF configuration server to disappear After breath, the query messages are sent to OF interchanger by the IP network, in order to which OF interchanger is according to the query messages The configuration management port of the OF interchanger is set and matching for the OF configuration server is obtained by the configuration management port Confidence breath, establishes connection with the OF configuration server.
The configuration management port of the OF interchanger is arranged according to the query messages for step 305, OF interchanger.
After the query messages that OF interchanger receives that OF configuration server is sent by IP network, OF interchanger from this The first port of OF interchanger receives the query messages, and the first port is the edge in the OF interchanger and the IP network Any one port for the OF interchanger that router is connected, the edge router, that is, couple in router are to be located at the IP The router of network edge.
Specifically, firstly, the configuration management port of the OF interchanger is arranged according to the query messages in OF interchanger Before, OF interchanger determines whether the jump limits value in the query messages is equal to zero, and the jump limits value is used to indicate the inquiry The hop count of message.If the jump limits value in the query messages is equal to zero, the query messages are abandoned；If the query messages In jump limits value be not equal to zero, updating jump limits value in the query messages is when front jumping limits value -1.The jump limits value For the integer more than or equal to 1.It is exemplary, it is assumed that when the jump limits value in the query messages is equal to 1, the OF interchanger is logical After crossing the query messages that the first port receives the transmission of OF configuration server, updating the jump limits value is to work as front jumping Limits value -1 reexamines the jump limits value so that the updated jump limits value is 0, because the jump limits value is 0, The query messages are then abandoned, the OF interchanger no longer forwards the query messages；When the jump limits value in the query messages When greater than 1, after the OF interchanger receives the query messages of OF configuration server transmission by first port, institute is updated Stating and jumping limits value is to reexamine the jump limits value when front jumping limits value -1, if the jump limits value -1 is greater than 0, which is handed over It changes planes and forwards the query messages, OF interchanger is every to forward jump limits value described in the primary query messages to subtract 1, until the jump Limits value is that 0, OF interchanger abandons the query messages, no longer forwards the query messages.The embodiment of the present invention is looked into described in assuming Asking the jump limits value in message is 2, then the query messages can be forwarded primary by the OF interchanger in OF network.
Then, the OF switch query OF interchanger whether there is configured configuration management port, if the OF is exchanged There are configured configuration management port, the priority of the OF interchanger configured configuration management port and institutes for machine State the priority of first port.If there are at least two OF configuration servers in OF network, at least two are received in OF interchanger After the query messages that a OF configuration server is sent, the priority and described first of the configured configuration management port The priority of port, when the priority of the configured configuration management port is less than the priority of the first port, the OF Interchanger is using the first port as the configuration management port of the OF interchanger, and by the preferential of the configuration management port Grade is set as the priority of the OF configuration server, when the priority of the configured configuration management port is greater than or equal to The priority of the first port, the OF interchanger is using configured configuration management port the matching as the OF interchanger Set management port.
It should be noted that the configured configuration management port priority and the first port it is excellent Before first grade, OF interchanger can obtain the priority of OF configuration server as the first port in the query messages Priority, the preferential of the configured configuration management port can be obtained in the information that the OF interchanger locally saves Grade, the priority of the configured configuration management port are the query messages that the configured configuration management port receives The priority of the OF configuration server of transmitting terminal.
Particularly, if there are an OF configuration servers in OF network, an OF configuration service is received in OF interchanger After the query messages that device is sent, the priority and the first end of the OF interchanger configured configuration management port The priority of mouth, because the OF that the OF interchanger includes from the query messages that the first port of the OF interchanger receives matches The priority for setting server disappears with the OF interchanger from the inquiry that the configured configuration management port of the OF interchanger receives The priority for the OF configuration server for including in breath is equal, so by comparing to obtain the configured configuration management port Priority is equal with the priority of the first port, then the OF interchanger using the configured configuration management port as The configuration management port of the OF interchanger.
It should be noted that no matter there are have at least two in an OF configuration server or OF network in OF network A OF configuration server, if configured configuration management port is not present in the OF interchanger, which connects described Receive configuration management port of the first port of query messages as the OF interchanger.
Step 306, OF interchanger generate response message according to the query messages.
OF interchanger according to the query messages be successfully arranged the OF interchanger configuration management port and then according to The flow stream searching forward rule stored in the OF interchanger, the forward rule disappear between OF interchanger and OF controller Required forward-path when breath interaction.If finding matched flow table, OF interchanger forwards the query messages according to flow table.If Matched flow table is not found, then OF interchanger generates response message, and the response message includes the identity of the OF interchanger Mark.The embodiment of the present invention assumes that OF interchanger does not find matched flow table, and the OF interchanger generates response message.
The response message includes ethernet layer information, IP layers of information, application layer message.The format of the response message is such as Shown in table 2.
2 response message format of table
Specifically, as shown in table 2, the application layer message of the response message includes: MAC Address field, for indicating The MAC Address of OF interchanger is stated, the field that must be carried for the response message；Flag bit (Flags) field is for mark It is no there are MAC Address, MAC Address mask (MAC Mask), the address IPv4, IPv4 address mask (IPv4Mask), the address IPv6, IPv6 address mask (IPv6Mask), data link address (Data Path ID), data link address mask (Data Path ID Mask) field, which can be eight, usually be indicated with 1, use 0 is indicated without if in the flag bit MAC Address, the address IPv4, the address IPv6, data link address exist, then mask (Mask) value all 1 of respective field, if MAC Address, the address IPv4, the address IPv6, data link address in the flag bit are not present, then omit the corresponding field With the mask field of the field, and corresponding position in flag bit (Flags) field is set 0；Linktype (Link Type) word Section instruction OF configuration server connection type, link port (Link Port) field indicate OF configuration server connectivity port, The Linktype field and the link port field is not used in response message in the present embodiment.The data link address The identity of (Data Path ID) for the mark OF interchanger in OF network, the MAC carried by the interchanger list layer Address generates.
The ethernet layer information includes: Dst MAC Address field, for identify the response message is sent to it is described When OF configuration server, the MAC Address for the OF configuration server that the response message carries；Src MAC Address field is used The MAC Address of the OF interchanger of the response message is sent in mark.
The IP layers of information includes: Dst IP address field, and the response message is sent to the OF for mark and is matched When setting server, the IP address for the OF configuration server that the response message carries；Src IP address field, for identifying Send the IP address of the OF interchanger of the response message.
The application layer message further include: version number (Version) field, for identifying the version of configuration and management agreement Information, it is described configuration and management agreement be OF configuration server and OF interchanger progress interacting message used in agreement, i.e., its In include the response message content；Type of message (Type) field is different in the field for identifying the type of message Value of message types indicates different type of messages, exemplary, if value of message types is designated as query messages for 0, if type of message Value is designated as response message for 1, if value of message types is designated as notice message for 2, therefore, the response disappears in the present embodiment The message type field of breath is 1；HL value field, for identifying the hop count of the response message, in the HL value field not The different hop count with numerical value response message；Priority (priority) field, for identifying the OF configuration service The priority of device；Interchanger list length (Switch list length) field, is used to indicate in configuration and management agreement and hands over It changes planes the length of list, the integer representation more than or equal to 1 can be used；Verification and (Checksum) field, for verifying State correctness of the response message in transmission process；EUI-64 field i.e. 64 overall situation identifier, the EUI-64 is for uniquely marking Know the identity of the OF interchanger, the EUI-64 can be also used for the OF such as unique identification OF configuration server, OF controller and set Standby identity.
Step 307, OF interchanger send response message to OF configuration server.
After OF interchanger generates response message, according to the query messages received, pass through the OF interchanger Configuration management port sends the response message to OF configuration server, in order to which OF configuration server is raw according to the response message At notice message, the notice message includes the configuration information of the OF configuration server, furthermore, OF interchanger is matched by described It sets management port and receives the notice message that OF configuration server is sent, according to the OF configuration server in the notice message Configuration information and OF configuration server establish connection.
It should be noted that receiving query messages there may be at least two OF interchangers in practical application generates response Message, then each OF interchanger sends response message to OF configuration server, and accordingly, there exist at least two difference OF exchanges The response message of machine information.
Step 308, OF configuration server generate notice message according to the response message.
OF configuration server receive response message that the OF interchanger is sent by the configuration management port it Afterwards, notice message is generated according to the response message, the notice message includes the configuration information of the OF configuration server.
The notice message includes ethernet layer information, IP layers of information, application layer message.The format of the notice message is such as Shown in table 3.
3 advertisement message format of table
Specifically, as shown in table 3, the ethernet layer information of the notice message includes: Dst MAC Address field, is used for When the notice message is sent to the OF interchanger by mark, the MAC for the OF interchanger that the notice message carries Location；Src MAC Address field, for identifying the MAC Address for sending the OF configuration server of the notice message.
The IP layers of information includes: Dst IP address field, and the notice message is sent to the OF friendship for identifying When changing planes, the IP address for the OF interchanger that the notice message carries；Src IP address field is matched for identifying the OF Set the IP address of server.
The application layer message includes: version number (Version) field, and the version for identifying configuration and management agreement is believed Breath, the configuration and management agreement are that OF configuration server and OF interchanger carry out agreement used in interacting message, i.e., wherein Content including the notice message；Type of message (Type) field is different in the field to disappear for identifying the type of message Breath types value indicates different type of messages, exemplary, if value of message types is designated as query messages for 0, if value of message types It is designated as response message for 1, if value of message types is 2 to be designated as notice message, therefore, the notice message in the present embodiment Message type field be 2；HL value field, the difference for identifying the hop count of the notice message, in the HL value field The different hop count of numerical value notice message；Priority (priority) field, for identifying the OF configuration server Priority；Interchanger list length (Switch list length) field, is used to indicate in configuration and management agreement and exchanges The length of machine list can use the integer representation more than or equal to 1；Verification and (Checksum) field, it is described for verifying Correctness of the notice message in transmission process；EUI-64 field i.e. 64 overall situation identifier, the EUI-64 is for uniquely indicating The identity of the OF configuration server, the EUI-64 can be also used for uniquely indicating the OF equipment such as OF interchanger, OF controller Identity.
The application layer message includes: flag bit (Flags) field, for indicating MAC Address, MAC Address mask (MAC Mask), the address IPv4, IPv4 address mask (IPv4Mask), the address IPv6, IPv6 address mask (IPv6Mask), data-link Road address (Data Path ID), data link address mask (Data Path ID Mask) field, the flag bit field can be with It is eight, is usually indicated with 1, use 0 is indicated without if MAC Address, the address IPv4 in the flag bit, the address IPv6, data Link address exists, then mask (Mask) value all 1 of respective field, if the MAC Address, IPv4 in the flag bit Location, the address IPv6, data link address are not present, then omit the mask field of the corresponding field and the field, and will mark Corresponding position sets 0 in will position (Flags) field；Linktype (Link Type) field indicates OF configuration server connection type, The network protocol that OF configuration server notice OF interchanger should use when connecting the OF configuration server, such as TCP (Transmission Control Protocol, transmission control protocol), UDP(User Datagram Protocol, user Datagram protocol) etc., for the field that the notice message must carry, link port (Link Port) field indicates OF configuration Server connectivity port, OF configuration server notice OF interchanger connect the network protocol that should be used when the OF configuration server Port numbers, such as TCP port number, UDP port number etc., the field that must be carried for the notice message.Particularly, described logical The interchanger list layer for accusing message carries the information of at least one OF interchanger.
It should be noted that IPv4 is IP(Internet Protocol, Internet protocol) fourth edition, IPv6 is IP The sixth version of (Internet Protocol, Internet protocol) and the next generation optical transmission network of IPv4, IPv6 is by IPv4 IP address increase to 128 by 32, the address IPv4 carried in the notice message is carried according in the notice message MAC Address distribute to obtain the address IPv6 carried in the address IPv4 or the notice message according to the notice message The MAC Address of middle carrying distributes to obtain the address IPv6；Data link address (Data Path ID) acts on phase with MAC Address With the unique identities for identifying the OF interchanger.MAC Address, the address IPv4 or the address IPv6 that the notice message includes Configuration information required for connection is established between the OF interchanger and the OF configuration server.The configuration information is to refer to The port numbers of agreement required for connection and the agreement, example are established between the bright OF interchanger and the OF configuration server If Transmission Control Protocol, udp protocol and the Transmission Control Protocol port numbers, the udp protocol port numbers are for specifying OF configuration server institute The OF interchanger for needing to connect；The notice message includes multiple OF interchanger column surface layer informations, receives the notice and disappears The OF interchanger of breath searches the information to match with the configuration information in the OF interchanger flow table, i.e., the described OF exchange With the OF interchanger list layer letter of flag bit (Flags) beginning to next flag bit (Flags) ending in machine column surface layer information Content is ceased as one, compared with the information of the OF interchanger flow table, if the OF interchanger for receiving the notice message exists The information to match with the configuration information is found in the OF interchanger flow table, then the OF interchanger matches according to Information be attached with the OF configuration server, the information to match includes the OF carried in the notice message Configuration server connection type and OF configuration server connectivity port etc..
Step 309, OF configuration server send notice message to OF interchanger.
After OF configuration server generates notice message, institute is sent to OF interchanger by IP network in a manner of multicast Notice message is stated, after OF interchanger receives the notice message, gets the configuration information of the OF configuration server, so Afterwards, OF interchanger establishes connection according to the configuration information and the OF configuration server.The notice message includes the OF Interchanger and the OF configuration server establish configuration information required for connection.
It is exemplary, as shown in figure 4, the embodiment of the present invention assumes that OF network includes the first OF configuration server 401, the 2nd OF Configuration server 402, the first OF interchanger 403, the 2nd OF interchanger 404 and solid oval indicate first network 405, it is assumed that the One network is IP network, which includes the first router 4051, the second router 4052 and third router 4053.Its In, the first router 4051 is connected with the 2nd OF interchanger 404, and third router 4053 is connected with the first OF interchanger 403, i.e., The first router 4051 and third router 4053 are edge router, and the second router 4052 connects the first OF configuration server 401 and the 2nd OF configuration server 402, and the first router 4051, the second router 4052 and third routing in IP network It is connected with each other between device 4053.
Assuming that the same multicast group, and the first OF interchanger is added in the first OF interchanger 403 and the 2nd OF interchanger 404 403 and the 2nd OF interchanger 404 configured configuration management port priority be the first OF configuration server 401 it is preferential Grade.When the 2nd OF configuration server 402 generation query messages, the first router 4051, second in the IP network can be passed through Router 4052 and third router 4053 give query messages multicast to the first OF interchanger 403 and the 2nd OF interchanger 404, the One OF interchanger 403 receives query messages from the first port of the first OF interchanger 403, the 2nd OF interchanger 404 from this The first port of two OF interchangers 404 receives query messages, it is assumed that the priority of the first OF configuration server 401 is less than the 2nd OF The priority of configuration server 402, then using the first port of the first OF interchanger 403 as configuration management port, by the 2nd OF The first port of interchanger 404 generates response as configuration management port, the first OF interchanger 403 and the 2nd OF interchanger 404 Response message can be sent to the first OF configuration server 401 and the 2nd OF configuration server 402, the first OF configuration by message Server 401 and the 2nd OF configuration server 402 send announcement messages to the first OF according to response message generation notice message Interchanger 403 and the 2nd OF interchanger 404.OF network described in the embodiment of the present invention only schematically illustrates, in practical application It can be other network structures, do not limit this.
It should be noted that specific multicast group, OF configuration server is first added in OF interchanger described in the embodiment of the present invention Query messages are sent by IP network using multicast mode and inquire OF interchanger, as long as the OF interchanger of specific multicast group is added It can be found by OF configuration server, therefore OF interchanger can be according to the configuration of the query messages setting OF interchanger received Then management port is obtained the configuration information of OF configuration server by configuration management port, built with the OF configuration server Vertical connection.Particularly, when there are at least two OF configuration servers, since OF interchanger replies to answering for OF configuration server Answering message is also multicast message, so the OF configuration server in same specific multicast group can receive the multicast response Message, therefore the range of distribution management OF interchanger can be negotiated how between these OF configuration servers, the OF configuration clothes Business device can specify the OF interchanger of each OF configuration server management by preconfigured list, can also pass through and configure Negotiate the OF interchanger of each each Self management of OF configuration server with management agreement.
OF interchanger described in the embodiment of the present invention and OF configuration server carry out the routing forwarding of message by IP network It only schematically illustrates, the routing that other networks with route forwarding function can also be used to carry out message in practical application turns Hair, which is not limited by the present invention.
The method provided in an embodiment of the present invention for obtaining configuration server information, first OF interchanger are actively added after powering on Specific multicast group, the router in IP network establish multicast forwarding path, and then, OF configuration server generates query messages, OF configuration server sends query messages to OF interchanger, after OF interchanger receives query messages, according to the query messages The configuration management port of the OF interchanger is set, and OF interchanger generates response message further according to the query messages, matches to OF It sets server and sends response message, OF configuration server generates notice message according to the response message, sends to OF interchanger Notice message after OF interchanger receives notice message, gets the configuration information of the OF configuration server, finally, OF is handed over It changes planes and connection is established according to the configuration information and the OF configuration server.The notice message include the OF interchanger with The OF configuration server establishes configuration information required for connection.So as to make OF interchanger obtain OF configuration service automatically The configuration information of device avoids the heavy workload of the configuration information of setting OF configuration server by hand and inflexible problem.
The embodiment of the present invention provides a kind of open flows OF interchanger 50, as shown in Figure 5, comprising:
First receiving unit 501, for receiving the query messages of OF configuration server transmission, the query messages include to use In the parameter for identifying the OF configuration server.
Setting unit 502, for the configuration management port of the OF interchanger to be arranged according to the query messages.
First acquisition unit 503, for by the configuration management port obtain the OF configuration server with confidence Breath, establishes connection with the OF configuration server.
So, OF interchanger is arranged the OF according to the query messages that the OF configuration server received is sent and exchanges The configuration management port of machine establishes connection by configuration management port and the OF configuration server, obtains OF configuration server Configuration information, so as to make OF interchanger obtain the configuration information of OF configuration server automatically, avoid by hand setting OF The heavy workload of the configuration information of configuration server and inflexible problem.
First receiving unit 501 is specifically used for:
The query messages that the OF configuration server is sent are received from the first port of the OF interchanger；Then
The setting unit 502 is specifically used for:
According to the query messages, the configuration management port that the first port is the OF interchanger is set.
The setting unit 502 is specifically used for:
The OF interchanger is inquired with the presence or absence of configured configuration management port.
If the OF interchanger there are configured configuration management port, the configured configuration management port The priority of priority and the first port.
When the priority of the configured configuration management port is less than the priority of the first port, by described the Configuration management port of the Single port as the OF interchanger.
It include: the priority of the OF configuration server in the query messages, then
As shown in fig. 6, the OF interchanger 50 further include:
Second acquisition unit 504, for obtaining the priority conduct of the OF configuration server in the query messages The priority of the first port.
The query messages include: jump limits value, the hop count jumped limits value and be used to indicate the query messages, Then
The OF interchanger 50 further include:
Whether determination unit 505, the jump limits value for determining in the query messages are equal to zero.
Discarding unit 506 abandons the query messages if being equal to zero for the jump limits value in the query messages.
Updating unit 507 updates in the query messages if being not equal to zero for the jump limits value in the query messages Jump limits value be when front jumping limits value -1.
The OF interchanger further include:
Generation unit 508, for generating response message, the response message includes the identity of the OF interchanger.
Transmission unit 509, for sending response message to the OF configuration server by the configuration management port, In order to which the OF configuration server generates notice message according to the response message, the notice message includes the OF configuration The configuration information of server.
Second receiving unit 5010, for receiving the logical of the OF configuration server transmission by the configuration management port Accuse message.
Establish unit 5011, for according to the configuration information of the OF configuration server in the notice message with it is described OF configuration server establishes connection.
The embodiment of the present invention provides a kind of OF configuration server 60, as shown in fig. 7, comprises:
First generation unit 601, for generating query messages, the query messages include for identifying the OF configuration clothes The parameter of business device.
First transmission unit 602, for sending the query messages to OF interchanger, in order to the OF interchanger according to The query messages, which are arranged the configuration management port of the OF interchanger and obtain the OF by the configuration management port, matches The configuration information for setting server establishes connection with the OF configuration server.
So, firstly, then OF configuration server, which generates query messages, sends the query messages to OF interchanger, In order to which the configuration management port of OF interchanger is arranged according to the query messages in OF interchanger and passes through the configuration management end Mouth obtains the configuration information of the OF configuration server, connection is established with the OF configuration server, so as to exchange OF Machine obtains the configuration information of OF configuration server automatically, avoids the workload of the configuration information of setting OF configuration server by hand Big and inflexible problem.
It include: the priority of the OF configuration server, the priority of the OF configuration server in the query messages If for the OF interchanger there are configured configuration management port, and the priority of the configured configuration management port Less than the OF configuration server priority when, using the port for receiving the query messages as the OF interchanger Configuration management port, and set the priority of the configuration management port to the priority of the OF configuration server.
It include: jump limits value in the query messages, the forwarding time jumped limits value and be used to indicate the query messages Number abandons the query messages, differs in the jump limits value so that the OF interchanger is when the jump limits value is equal to zero When zero, updating the jump limits value is when front jumping limits value -1.
As shown in figure 8, the OF configuration server 60 further include:
Receiving unit 603, the response message sent for receiving the OF interchanger by the configuration management port, institute State the identity that response message includes the OF interchanger.
Second generation unit 604, for generating notice message, institute according to the received response message of the receiving unit State the configuration information that notice message includes the OF configuration server.
Second transmission unit 605, for sending the notice that second generation unit generates to the OF interchanger Message, in order to which the OF interchanger is according to the configuration information and the OF of the OF configuration server in the notice message Configuration server establishes connection.
The embodiment of the present invention provides a kind of communication system 70, as shown in Figure 9, comprising: at least one is such as OF configuration server 701 and at least one such as OF interchanger 702,
The OF configuration server 701 includes to match for identifying the OF for generating query messages, the query messages Set the parameter of server；The query messages are sent to the OF interchanger；
The OF interchanger 702 is used to receive the query messages of OF configuration server transmission；Disappeared according to the inquiry The configuration management port of the OF interchanger is arranged in breath；Matching for the OF configuration server is obtained by the configuration management port Confidence breath, establishes connection with the OF configuration server.
The OF interchanger 702 is specifically used for:
The OF interchanger is inquired with the presence or absence of configured configuration management port；
If there are configured configuration management ports for the OF interchanger, the OF configuration is obtained in the query messages Priority of the priority of server as the first port, the priority of the configured configuration management port with The priority of the first port, wherein the first port is the port that the OF interchanger receives the query messages；
When the priority of the configured configuration management port is less than the priority of the first port, by described the Configuration management port of the Single port as the OF interchanger.
The OF interchanger 702 is also used to:
Response message is generated, the response message includes the identity of the OF interchanger, passes through the configuration management Port sends response message to the OF configuration server；
The notice message that the OF configuration server is sent is received by the configuration management port；
It is established according to the configuration information of the OF configuration server in the notice message and the OF configuration server Connection；
The OF configuration server 701 is also used to:
Receive the response message that the OF interchanger is sent by the configuration management port；
Notice message is generated according to the response message, the notice message includes the OF configuration server with confidence Breath；
The notice message is sent to the OF interchanger.
The embodiment of the present invention provides a kind of OF interchanger 80, as shown in Figure 10, comprising:
Receiver 801, for receiving the query messages of OF configuration server transmission, the query messages include for identifying The parameter of the OF configuration server.
Processor 802, for the configuration management port of the OF interchanger to be arranged according to the query messages.
The processor 802 be also used to obtain by the configuration management port OF configuration server with confidence Breath, establishes connection with the OF configuration server.
So, OF interchanger is arranged the OF according to the query messages that the OF configuration server received is sent and exchanges The configuration management port of machine establishes connection by configuration management port and the OF configuration server, obtains OF configuration server Configuration information, so as to make OF interchanger obtain the configuration information of OF configuration server automatically, avoid by hand setting OF The heavy workload of the configuration information of configuration server and inflexible problem.
The receiver 801 is specifically used for:
The query messages that the OF configuration server is sent are received from the first port of the OF interchanger；Then
The processor 802 is specifically used for:
According to the query messages, the configuration management port that the first port is the OF interchanger is set.
The processor 802 is specifically used for:
The OF interchanger is inquired with the presence or absence of configured configuration management port.
If the OF interchanger there are configured configuration management port, the configured configuration management port The priority of priority and the first port.
When the priority of the configured configuration management port is less than the priority of the first port, by described the Configuration management port of the Single port as the OF interchanger.
It include: the priority of the OF configuration server in the query messages, then
The processor 802 is also used to:
Priority of the priority of the OF configuration server as the first port is obtained in the query messages.
The query messages include: jump limits value, the hop count jumped limits value and be used to indicate the query messages, Then
The processor 802 is also used to:
Determine whether the jump limits value in the query messages is equal to zero.
If the jump limits value in the query messages is equal to zero, the query messages are abandoned.
If the jump limits value in the query messages is not equal to zero, the jump limits value updated in the query messages is current Jump limits value -1.
The processor 802 is also used to:
Response message is generated, the response message includes the identity of the OF interchanger.
As shown in figure 11, the OF interchanger 80 further includes；
Transmitter 803, for configuring and servicing to the OF by the configuration management port according to the query messages Device sends response message, and in order to which the OF configuration server generates notice message according to the response message, the notice disappears Breath includes the configuration information of the OF configuration server.
The receiver 801 is also used to:
The notice message that the OF configuration server is sent is received by the configuration management port.
The processor 802 is also used to:
It is established according to the configuration information of the OF configuration server in the notice message and the OF configuration server Connection.
The embodiment of the present invention provides a kind of OF configuration server 90, as shown in figure 12, comprising:
Processor 901, for generating query messages, the query messages include for identifying the OF configuration server Parameter.
Transmitter 902, for sending the query messages to OF interchanger, in order to which the OF interchanger is looked into according to Message is ask the configuration management port of the OF interchanger is arranged and obtains the OF configuration service by the configuration management port The configuration information of device establishes connection with the OF configuration server.
So, firstly, then OF configuration server, which generates query messages, sends the query messages to OF interchanger, In order to which the configuration management port of OF interchanger is arranged according to the query messages in OF interchanger and passes through the configuration management end Mouth obtains the configuration information of the OF configuration server, connection is established with the OF configuration server, so as to exchange OF Machine obtains the configuration information of OF configuration server automatically, avoids the workload of the configuration information of setting OF configuration server by hand Big and inflexible problem.
It include: the priority of the OF configuration server, the priority of the OF configuration server in the query messages If for the OF interchanger there are configured configuration management port, and the priority of the configured configuration management port Less than the OF configuration server priority when, using the port for receiving the query messages as the OF interchanger Configuration management port, and set the priority of the configuration management port to the priority of the OF configuration server.
It include: jump limits value in the query messages, the forwarding time jumped limits value and be used to indicate the query messages Number abandons the query messages, differs in the jump limits value so that the OF interchanger is when the jump limits value is equal to zero When zero, updating the jump limits value is when front jumping limits value -1.
As shown in figure 13, the OF configuration server 90 further include:
Receiver 903, the response message sent for receiving the OF interchanger by the configuration management port are described Response message includes the identity of the OF interchanger.
The processor 901 is also used to:
Notice message is generated according to the received response message of the receiver, the notice message includes that the OF matches Set the configuration information of server.
The transmitter 902 is also used to:
Send the notice message that the processor generates to the OF interchanger, in order to the OF interchanger according to The configuration information of the OF configuration server in the notice message and the OF configuration server establish connection.
The embodiment of the present invention provides a kind of communication system 100, as shown in figure 14, comprising: at least one OF configuration server 1001 and at least one OF interchanger 1002,
The OF configuration server 1001 includes to match for identifying the OF for generating query messages, the query messages Set the parameter of server；The query messages are sent to the OF interchanger；
The OF interchanger 1002 is used to receive the query messages of OF configuration server transmission；Disappeared according to the inquiry The configuration management port of the OF interchanger is arranged in breath；Matching for the OF configuration server is obtained by the configuration management port Confidence breath, establishes connection with the OF configuration server.
The OF interchanger 1002 is specifically used for:
The OF interchanger is inquired with the presence or absence of configured configuration management port；
If there are configured configuration management ports for the OF interchanger, the OF configuration is obtained in the query messages Priority of the priority of server as the first port, the priority of the configured configuration management port with The priority of the first port, wherein the first port is the port that the OF interchanger receives the query messages；
When the priority of the configured configuration management port is less than the priority of the first port, by described the Configuration management port of the Single port as the OF interchanger.
The OF interchanger 1002 is also used to:
Response message is generated, the response message includes the identity of the OF interchanger, passes through the configuration management Port sends response message to the OF configuration server；
The notice message that the OF configuration server is sent is received by the configuration management port；
It is established according to the configuration information of the OF configuration server in the notice message and the OF configuration server Connection；
The OF configuration server 1001 is also used to:
Receive the response message that the OF interchanger is sent by the configuration management port；
Notice message is generated according to the response message, the notice message includes the OF configuration server with confidence Breath；
The notice message is sent to the OF interchanger.
The embodiment of the present invention provides a kind of method, apparatus and system for obtaining configuration server information.Firstly, OF is exchanged Machine is actively added specific multicast group after powering on, the router in first network establishes multicast forwarding path, then, OF configuration clothes Business device generates query messages, and OF configuration server sends query messages to OF interchanger, after OF interchanger receives query messages, The configuration management port of the OF interchanger is set according to the query messages, and OF interchanger is generated further according to the query messages Response message sends response message to OF configuration server, and OF configuration server generates notice message according to the response message, Notice message is sent to OF interchanger, after OF interchanger receives notice message, gets the configuration of the OF configuration server Information, finally, OF interchanger establishes connection according to the configuration information and the OF configuration server.The notice message includes The OF interchanger and the OF configuration server establish configuration information required for connection.So as to keep OF interchanger automatic The configuration information for obtaining OF configuration server avoids the heavy workload and not of the configuration information of setting OF configuration server by hand Enough flexible problems.
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, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that the independent physics of each unit includes, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light The various media that can store program code such as disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is 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 (16)

1. a kind of method for obtaining configuration server information, is used for open flows OF interchanger characterized by comprising
The query messages that OF configuration server is sent are received from the first port of the OF interchanger, the query messages include to use In the parameter for identifying the OF configuration server；
According to the query messages, the configuration management port that the first port is the OF interchanger is set；
The configuration information that the OF configuration server is obtained by the configuration management port is established with the OF configuration server Connection；
Wherein, the configuration management port that the OF interchanger is arranged according to the query messages includes:
The OF interchanger is inquired with the presence or absence of configured configuration management port；
If the OF interchanger there are configured configuration management port,
Compare the priority of the configured configuration management port and the priority of the first port；
When the priority of the configured configuration management port is less than the priority of the first port, by the first end Configuration management port of the mouth as the OF interchanger.
2. the method according to claim 1, wherein including: the OF configuration server in the query messages Priority, then
It is described before the priority of the configured configuration management port and the priority of the first port Method further include:
Priority of the priority of the OF configuration server as the first port is obtained in the query messages.
3. according to claim 1 to method described in 2 any one claims, which is characterized in that the query messages include: Limits value is jumped, the jump limits value is used to indicate the hop count of the query messages, then
Before the configuration management port that the OF interchanger is set according to the query messages, the method also includes:
Determine whether the jump limits value in the query messages is equal to zero；
If the jump limits value in the query messages is equal to zero, the query messages are abandoned；
If the jump limits value in the query messages is not equal to zero, updating the jump limits value in the query messages is when front jumping limits Value -1 processed.
4. according to claim 1 to method described in 2 any one claims, which is characterized in that described to pass through the configuration Management port obtains the configuration information of the OF configuration server, establishes connection with the OF configuration server, comprising:
Response message is generated, the response message includes the identity of the OF interchanger；
By the configuration management port, the response message is sent to the OF configuration server, in order to OF configuration Server generates notice message according to the response message, and the notice message includes the OF configuration server with confidence Breath；
The notice message that the OF configuration server is sent is received by the configuration management port；
Connection is established according to the configuration information of the OF configuration server in the notice message and the OF configuration server.
5. a kind of provide the method for configuration server information, it to be used for OF configuration server characterized by comprising
Query messages are generated, the query messages include the parameter for identifying the OF configuration server；
The query messages are sent to OF interchanger, are handed in order to which the OF is arranged according to the query messages in the OF interchanger The configuration management port changed planes and the configuration information that the OF configuration server is obtained by the configuration management port, and it is described OF configuration server establishes connection；
It wherein, include: the priority of the OF configuration server, the priority of the OF configuration server in the query messages If for the OF interchanger there are configured configuration management port, and the priority of the configured configuration management port Less than the OF configuration server priority when, the port of the query messages will be received as the configuration of the OF interchanger Management port, and set the priority of the configuration management port to the priority of the OF configuration server.
6. according to the method described in claim 5, it is characterized in that, including: jump limits value in the query messages, the jump limits Value processed is used to indicate the hop count of the query messages, so that the OF interchanger is when the jump limits value is equal to zero, loses The query messages are abandoned, when the jump limits value is not equal to zero, updating the jump limits value is when front jumping limits value -1.
7. according to method described in claim 5 to 6 any one claim, which is characterized in that described to OF interchanger After sending the query messages, the method also includes:
The response message that the OF interchanger is sent by the configuration management port is received, the response message includes the OF The identity of interchanger；
Notice message is generated according to the response message, the notice message includes the configuration information of the OF configuration server；
The notice message is sent to the OF interchanger, in order to which the OF interchanger is according in the notice message The configuration information of OF configuration server and the OF configuration server establish connection.
8. a kind of open flows OF interchanger characterized by comprising
First receiving unit, for receiving the query messages that OF configuration server is sent from the first port of the OF interchanger, The query messages include the parameter for identifying the OF configuration server；
Setting unit, for the configuration management end that the first port is the OF interchanger to be arranged according to the query messages Mouthful；
First acquisition unit, for obtaining the configuration information of the OF configuration server by the configuration management port, with institute It states OF configuration server and establishes connection；
Wherein, the setting unit is specifically used for:
The OF interchanger is inquired with the presence or absence of configured configuration management port；
If the OF interchanger there are configured configuration management port, the configured configuration management port it is preferential The priority of grade and the first port；
When the priority of the configured configuration management port is less than the priority of the first port, by the first end Configuration management port of the mouth as the OF interchanger.
9. OF interchanger according to claim 8, which is characterized in that include: the OF configuration clothes in the query messages The priority of business device, then
The OF interchanger further include:
Second acquisition unit, for obtaining the priority of the OF configuration server in the query messages as described first The priority of port.
10. according to OF interchanger described in claim 8 to 9 any one claim, which is characterized in that the query messages It include: jump limits value, the hop count jumped limits value and be used to indicate the query messages, then
The OF interchanger further include:
Whether determination unit, the jump limits value for determining in the query messages are equal to zero；
Discarding unit abandons the query messages if being equal to zero for the jump limits value in the query messages；
Updating unit updates the jump limit in the query messages if being not equal to zero for the jump limits value in the query messages Value processed is when front jumping limits value -1.
11. according to OF interchanger described in claim 8 to 9 any one claim, which is characterized in that the OF interchanger Further include:
Generation unit, for generating response message, the response message includes the identity of the OF interchanger；
Transmission unit, for sending the response message to the OF configuration server by the configuration management port, so as to Notice message is generated according to the response message in the OF configuration server, the notice message includes the OF configuration service The configuration information of device；
Second receiving unit disappears for receiving the notice that the OF configuration server is sent by the configuration management port Breath；
Unit is established, for taking according to the configuration information of the OF configuration server in the notice message and OF configuration Business device establishes connection.
12. a kind of OF configuration server characterized by comprising
First generation unit, for generating query messages, the query messages include for identifying the OF configuration server Parameter；
First transmission unit, for sending the query messages to OF interchanger, in order to which the OF interchanger is looked into according to Message is ask the configuration management port of the OF interchanger is arranged and obtains the OF configuration service by the configuration management port The configuration information of device establishes connection with the OF configuration server；
It wherein, include: the priority of the OF configuration server, the priority of the OF configuration server in the query messages If for the OF interchanger there are configured configuration management port, and the priority of the configured configuration management port Less than the OF configuration server priority when, the port of the query messages will be received as the configuration of the OF interchanger Management port, and set the priority of the configuration management port to the priority of the OF configuration server.
13. OF configuration server according to claim 12, which is characterized in that include: to jump limitation in the query messages Value, the hop count jumped limits value and be used to indicate the query messages, so that the OF interchanger is in the jump limits value When equal to zero, the query messages are abandoned, when the jump limits value is not equal to zero, updating the jump limits value is when front jumping limits Value -1 processed.
14. OF configuration server according to claim 12, which is characterized in that the OF configuration server further include:
Receiving unit, the response message sent for receiving the OF interchanger by the configuration management port, the response Message includes the identity of the OF interchanger；
Second generation unit, for generating notice message, the notice according to the received response message of the receiving unit Message includes the configuration information of the OF configuration server；
Second transmission unit, for sending the notice message that second generation unit generates to the OF interchanger, with It is taken convenient for the OF interchanger according to the configuration information of the OF configuration server in the notice message and OF configuration Business device establishes connection.
15. a kind of communication system characterized by comprising at least one OF configuration server and at least one OF interchanger,
The OF configuration server includes for identifying the OF configuration server for generating query messages, the query messages Parameter；The query messages are sent to the OF interchanger；
The OF interchanger is used to receive the query messages of OF configuration server transmission；According to the query messages, institute is set State the configuration management port of OF interchanger；The configuration information of the OF configuration server is obtained by the configuration management port, Connection is established with the OF configuration server；
Wherein, the OF interchanger is specifically used for:
The OF interchanger is inquired with the presence or absence of configured configuration management port；
If there are configured configuration management ports for the OF interchanger, the OF configuration service is obtained in the query messages Priority of the priority of device as first port, the priority and described first of the configured configuration management port The priority of port, wherein the first port is the port that the interchanger receives the query messages；
When the priority of the configured configuration management port is less than the priority of the first port, by the first end Configuration management port of the mouth as the OF interchanger.
16. communication system according to claim 15, which is characterized in that
The OF interchanger is also used to generate response message, and the response message includes the identity of the OF interchanger, leads to The configuration management port is crossed, sends the response message to the OF configuration server；
The OF configuration server is also used to receive the response that the OF interchanger is sent by the configuration management port Message generates notice message according to the response message, and the notice message includes the configuration information of the OF configuration server, The notice message is sent to the OF interchanger；
The OF interchanger is also used to receive the notice that the OF configuration server is sent by the configuration management port Message is established according to the configuration information of the OF configuration server in the notice message and the OF configuration server and is connected It connects.
CN201310724751.3A 2013-12-24 2013-12-24 A kind of method, apparatus and system obtaining configuration server information Expired - Fee Related CN104734877B (en)

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