CN104836688A - Network device and method for virtually configuring underlying equipment - Google Patents
Network device and method for virtually configuring underlying equipment Download PDFInfo
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- CN104836688A CN104836688A CN201510239441.1A CN201510239441A CN104836688A CN 104836688 A CN104836688 A CN 104836688A CN 201510239441 A CN201510239441 A CN 201510239441A CN 104836688 A CN104836688 A CN 104836688A
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Abstract
The invention discloses a network device. The network device comprises a receiving module, a virtual configuring module and a transmitting module, wherein the receiving module is used for receiving a network property parameter transmitted by the underlying equipment; the virtual configuring module is used for virtually configuring the underlying equipment according to the network property parameter and generating virtual configuration information; the transmitting module is used for transmitting the virtual configuration information of the underlying equipment to a controller; and the controller is used for controlling the underlying equipment according to the virtual configuration information. The invention also provides a method for virtually configuring the underlying equipment. Through adoption of the network device and method, the deployment of network underlying equipment can become more flexible.
Description
Technical field
The present invention relates to the communications field, the method for network equipment and virtual configuration underlying device thereof in software defined network (Software DefinedNetwork, SDN).
Background technology
Software defined network is a kind of new network framework, by network bottom layer equipment chain of command and forwarding face being separated, thus achieves the flexible control of network traffics and the flexible deployment of underlying device and software definition.
Current network bottom layer equipment, the resource such as facility information, port information, port number, exchange capacity as SDN switch in SDN equipment is all fixing.But due to different to the demand of SDN switch in practice environment, also different to the demand of SDN switch, such as small scale network, switch part port or resource are by idle, but idle port or resource can not use as an independent SDN switch again; On the other hand, because the scale of network constantly expands, also by making original SDN switch of disposing not to be suitable for, showing as the resources such as port inadequate, making to change more senior SDN switch, cause great waste.
Summary of the invention
In view of this, the object of this invention is to provide a kind of method of network equipment and virtual configuration underlying device thereof, can realize a network bottom layer equipment invents multiple, and multiple underlying device invents one, and then realizes network bottom layer equipment flexible deployment in a network.
The network equipment provided in embodiment of the present invention is applied to software defined network, and described software defined network comprises controller and at least one underlying device, and this network equipment comprises receiver module, virtual configuration module and sending module.The network attribute parameter that receiver module transmits for receiving underlying device; Virtual configuration module is used for carrying out virtual configuration and generating virtual configuration information according to described network attribute parameter to described underlying device; Sending module is used for the virtual configuration information of described underlying device to be sent to described controller, and described controller controls described underlying device according to described virtual configuration information.
Preferably, described receiver module is also for receiving the virtual configuration demand of user, described virtual configuration demand be by virtual for described underlying device for multiple virtual underlying device or by virtual for multiple underlying device be a virtual underlying device, described network attribute parameter comprises the mark number of described underlying device and the port numbers of described underlying device.
Preferably, when described virtual configuration demand be by virtual for described underlying device for multiple virtual underlying device time, the mark number of described underlying device is configured to multiple virtual mark number by described virtual configuration module, described multiple virtual mark number represents multiple virtual underlying device, when described virtual configuration demand be by virtual for multiple underlying device be a virtual underlying device time, the mark number of described underlying device is configured to a virtual mark number by described virtual configuration module, and a described virtual mark number represents a virtual underlying device.
Preferably, described virtual configuration module is also for distributing to described virtual underlying device by unduplicated for the port numbers of described underlying device, and the mark number of described virtual underlying device and port numbers constitute described virtual configuration information.
Preferably, described network equipment is positioned at described controller place or described underlying device place.
The method of the virtual configuration underlying device provided in the another execution mode of the present invention, be applied to software defined network, described software defined network comprises controller, described underlying device is at least one, and the method for described virtual configuration underlying device comprises: receive the network attribute parameter that described underlying device transmits; According to described network attribute parameter, virtual configuration is carried out and generating virtual configuration information to described underlying device; The virtual configuration information of described underlying device is sent to described controller, and described controller controls described underlying device according to described virtual configuration information.
Preferably, the method of described virtual configuration underlying device also comprises: the virtual configuration demand receiving user, described virtual configuration demand be by virtual for described underlying device for multiple virtual underlying device or by virtual for multiple underlying device be a virtual underlying device, described network attribute parameter comprises the mark number of described underlying device and the port numbers of described underlying device.
Preferably, describedly according to network attribute parameter, the step that described underlying device carries out virtual configuration specifically to be comprised: when described virtual configuration demand be by virtual for described underlying device for multiple virtual underlying device time, the mark number of described underlying device is configured to multiple virtual mark number by described virtual configuration module, described multiple virtual mark number represents multiple virtual underlying device, when described virtual configuration demand be by virtual for multiple underlying device be a virtual underlying device time, the mark number of described underlying device is configured to a virtual mark number by described virtual configuration module, a described virtual mark number represents a virtual underlying device.
Preferably, described foundation network attribute parameter comprises further to the step that described underlying device carries out virtual configuration: distribute to described virtual underlying device by unduplicated for the port numbers of described underlying device.
Preferably, described virtual configuration information comprises mark number and the port numbers of described virtual underlying device.
Above-mentioned network equipment is by carrying out virtual configuration to the underlying device in SDN, and can realize an equipment and invent multiple, multiple equipment invents one.And then making network design more flexible, SDN device resource can be utilized more fully.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the applied environment figure of network equipment one execution mode of the present invention.
Fig. 2 is the functional block diagram of network equipment one execution mode of the present invention.
Fig. 3 is the flow chart of method one execution mode of virtual configuration underlying device of the present invention.
Fig. 4 the present invention is directed to the flow chart that Fig. 3 further illustrates.
Main element symbol description
Network equipment 10
Controller 20
Underlying device 30
Receiver module 100
Virtual configuration module 102
Sending module 104
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Be described below in detail embodiments of the invention, the example of embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Fig. 1 is the applied environment schematic diagram of network equipment 10 1 execution mode of the present invention, and its applied environment is SDN environment.As shown in Figure 1, SDN mainly comprises controller 20 and some underlying device 30, and wherein, controller 20 pairs of networks carry out centralized control, realize the function of key-course, and underlying device 30 is responsible for forwarding and the process of data.In the present embodiment, network equipment 10 is between controller 20 and underlying device 30 in truck, and it can be arranged in controller 20 on physical structure, also can be arranged in a certain underlying device 30.In the present embodiment, controller 20 is SDN controller, underlying device 30 for having the network bottom layer equipment of data retransmission function, such as switch, router.
Figure 2 shows that the functional block diagram of network equipment 10 1 execution mode of the present invention.Network equipment 10 comprises receiver module 100, virtual configuration module 102, sending module 104, memory 106 and processor 108, in the present embodiment, module 100 ~ 104 is executable program and is present in respectively in the memory 106 of control appliance 10, and performs relative program to realize the function of above-mentioned module by processor 108.
Receiver module 100 receives the property parameters of underlying device 30.In SDN, once after in underlying device 30 access network, its some property parameters can be issued controller 20 by open flows (openflow) agreement by underlying device 30, comprising procotol (the Internet protocol of underlying device 30, IP) address, media interviews control (Media access control, MAC) information such as address, data path identifier (Datapath Identify, dpid), port number, port title, port numbers.In the present embodiment, the data path identifier (hereinafter we will be referred to as dpid) in underlying device 30 association attributes parameter uniquely represents this underlying device 30.In the present embodiment, the respective attributes parameter that receiver module 100 receives also is stored with the form of tables of data, and this tables of data take dpid as index, directly to should the every other association attributes parameter of underlying device 30, and such as port numbers.
Virtual configuration module 102 carries out virtual configuration according to network attribute parameter to described underlying device 30.In the present embodiment, the property parameters received for receiver module 100 is embodied in the virtual configuration of underlying device 30 in addition virtual, illustrate further, virtual configuration module 102 is that the virtual configuration demand receiving user according to receiver module 100 carries out virtual configuration to underlying device 30.
In the present embodiment, when the virtual configuration demand of user is when being the virtual underlying device of multiple stage by a certain underlying device 30 virtual configuration, dpid in the property parameters of reception is invented multiple virtual dpid by virtual configuration module 102, and with multiple virtual dpid for virtual data table set up in index, simultaneously, multiple virtual underlying device is given by Resourse Distribute, specifically, can by parameter value concrete in property parameters not duplicate allocation to multiple virtual dpid being stored in virtual data table.For example, need according to user, when a underlying device 30 is invented 2 virtual underlying device, then the dpid of 1 underlying device 30 is invented 2 virtual dpid, simultaneously by unduplicated for the port number of underlying device 30 port attribute distribute to two virtual underlying device and be stored to described two with in the virtual dpid virtual data table that is index.
In the present embodiment, when the virtual configuration demand of user is when being a virtual underlying device by multiple stage underlying device 30 virtual configuration, virtual configuration module 102 by receive multiple dpid virtual be a dpid, and with this virtual dpid for tables of data set up in index, the design parameter value of property parameters of the multiple underlying device 30 received is stored into in the virtual dpid virtual data table that is index simultaneously, by multiple underlying device 30 virtual be a virtual underlying device.For example, when there is two underlying device 30 in this SDN, receiver module 100 gets the property parameters of two underlying device 30.By the virtual configuration of virtual configuration module 102, multiple underlying device 30 is virtual as a virtual underlying device, and with virtual dpid for tables of data set up in index, port number in two underlying device 30 port attributes is carried out cumulative using the port as virtual underlying device simultaneously, port numbering increases progressively (as first underlying device has 48 ports by underlying device 30 number order is single from 1, second underlying device has 24 ports, then the port of first underlying device 30 is numbered by 1 to 48, by the port of second underlying device 30 by 49 to 72 numberings, the like, it can be used as the port numbering of virtual underlying device).
The virtual configuration information of virtual configuration module 104 virtual configuration is sent to controller 20 by sending module 104, just judges that it is connected to the virtual underlying device representated by virtual configuration information after described controller 20 receives virtual configuration information.In the present embodiment, controller software (as Ryu, OpenDaylight, Floodlight etc.) preferentially reads the virtual configuration of underlying device 30 when receiving configuration information in resolving, then according to virtualized Command Line Parsing openflow protocol data bag.In other words, namely controller 20 controls the virtual underlying device of virtual configuration.
In the present embodiment, receiver module 100 and sending module 104 are also respectively used to the connection topology obtained and send between each underlying device 30, when designing across forwarding between underlying device 30, calculate according to practical topology situation, the forwarding flow table of each underlying device 30 is configured, packet is forwarded across underlying device 30.
Fig. 3 is the flow chart of network equipment 10 virtual configuration network equipment method one execution mode of the present invention.Wherein this method is by method described in the Implement of Function Module shown in Fig. 2.
In step S300, receiver module 100 receives the property parameters of underlying device 30.In SDN, once after in underlying device 30 access network, its some property parameters can be issued controller 20 by open flows (openflow) agreement by underlying device 30, comprising the procotol (Internetprotocol of underlying device 30, IP) address, media interviews control (Media access control, MAC) information such as address, data path identifier (Datapath Identify, dpid), port number, port title, port numbers.In the present embodiment, the data path identifier (hereinafter we will be referred to as dpid) in underlying device 30 association attributes parameter uniquely represents this underlying device 30.In the present embodiment, the respective attributes parameter that receiver module 100 receives is stored with the form of tables of data, and this tables of data take dpid as index, directly to should the every other association attributes parameter of underlying device 30, and such as port numbers.
In step S302, virtual configuration module 102 carries out virtual configuration according to network attribute parameter to underlying device 30.In the present embodiment, the property parameters received for receiver module 100 is embodied in the virtual configuration of underlying device 30 in addition virtual.For step S302, idiographic flow consults Fig. 4, and wherein Fig. 4 the present invention is directed to the flow chart that Fig. 3 further illustrates, and its method is realized by the functional module shown in Fig. 2 equally.
In step S400, receiver module 102 receives the virtual configuration demand of user.In the present embodiment, because the demand of user is different, the quantity of the underlying device 30 in SDN is also not quite similar, may be one, also may be multiple stage, itself and controller 20 constitute SDN jointly, so the virtual configuration demand of user may be the virtual underlying device of multiple stage by wherein a certain underlying device 30 virtual configuration, also may be by virtual for multiple stage underlying device 30 be a virtual underlying device.
In step S402, it is the virtual underlying device of multiple stage by a certain underlying device 30 virtual configuration that virtual configuration module 102 judges that whether the virtual configuration demand of user is.
In step S404, when the virtual configuration demand of user is when being the virtual underlying device of multiple stage by a certain underlying device 30 virtual configuration, dpid in the property parameters of reception is invented multiple virtual dpid by virtual configuration module 102, and with multiple virtual dpid for virtual data table set up in index.
In step S406, virtual configuration module 102 by parameter value concrete in property parameters not duplicate allocation to multiple virtual dpid being stored in virtual data table.For example, need according to user, when a underlying device 30 is invented 2 virtual underlying device, then the dpid of 1 underlying device 30 is invented 2 virtual dpid, simultaneously by unduplicated for the port of underlying device 30 port attribute distribute to two virtual underlying device and be stored to described two with in the virtual dpid virtual data table that is index.
In step S408, it is a virtual underlying device by multiple stage underlying device 30 virtual configuration that virtual configuration module 102 judges that whether the virtual configuration demand of user is.
In step S410, when the virtual configuration demand of user is when being a virtual underlying device by multiple stage underlying device 30 virtual configuration, virtual configuration module 102 by receive multiple dpid virtual be a dpid, and with this virtual dpid for tables of data set up in index, the design parameter value of property parameters of the multiple underlying device 30 received is stored into in the virtual dpid virtual data table that is index simultaneously, by multiple underlying device 30 virtual be a virtual underlying device.
In step S412, virtual configuration module 102 distributes to a virtual underlying device by unduplicated for the port of multiple underlying device 30.For example, when there is two underlying device 30 in this SDN, receiver module 100 gets the property parameters of two underlying device 30.By the virtual configuration of virtual configuration module 102, multiple underlying device 30 is virtual as a virtual underlying device, and with virtual dpid for tables of data set up in index, port number in two underlying device 30 port attributes is carried out cumulative using the port as virtual underlying device simultaneously, port numbering increases progressively (as first underlying device has 48 ports by underlying device 30 number order is single from 1, second underlying device has 24 ports, then the port of first underlying device 30 is numbered by 1 to 48, by the port of second underlying device 30 by 49 to 72 numberings, the like, it can be used as the port numbering of virtual underlying device).
Separate regression steps S304, the virtual configuration information of virtual configuration module 104 virtual configuration is sent to controller 20 by sending module 104, just judges that it is connected to the virtual underlying device representated by virtual configuration information after described controller 20 receives virtual configuration information.In the present embodiment, preferentially the virtual configuration of underlying device 30 is read during the configuration information that controller software (as Ryu, OpenDaylight, Floodlight etc.) receives in resolving, then according to virtualized Command Line Parsing openflow protocol data bag.In other words, controller 20 controls the virtual underlying device of virtual configuration.
In the present embodiment, receiver module 100 and sending module 104 are also respectively used to the connection topology obtained and send between each underlying device 30, when designing across forwarding between underlying device 30, calculate according to practical topology situation, the forwarding flow table of each underlying device 30 is configured, packet is forwarded across underlying device 30.
In sum, network equipment 10 is by carrying out virtual configuration to the underlying device 30 in SDN, and can realize an equipment and invent multiple, multiple equipment invents one.That is, in real network deployment, a SDN equipment can be invented multiple independently logical device and use by small scale network, also multiple SDN equipment can be invented a SDN equipment to realize network design in large-scale network.Make network design more flexible, SDN device resource can be utilized more fully.
Last it is noted that above execution mode is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to aforementioned embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in aforementioned each execution mode, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each execution mode technical scheme of the present invention.
Claims (10)
1. a method for virtual configuration underlying device, is applied to software defined network, and described software defined network comprises controller, and described underlying device is at least one, it is characterized in that:
Receive the network attribute parameter that described underlying device transmits;
According to described network attribute parameter, virtual configuration is carried out and generating virtual configuration information to described underlying device; And
The virtual configuration information of described underlying device is sent to described controller, and described controller controls described underlying device according to described virtual configuration information.
2. the method for virtual configuration underlying device as claimed in claim 1, it is characterized in that, the method for described virtual configuration underlying device also comprises:
Receive the virtual configuration demand of user, described virtual configuration demand be by virtual for described underlying device for multiple virtual underlying device or by virtual for multiple underlying device be a virtual underlying device, described network attribute parameter comprises the mark number of described underlying device and the port numbers of described underlying device.
3. the method for virtual configuration underlying device as claimed in claim 2, is characterized in that, described foundation network attribute parameter specifically comprises the step that described underlying device carries out virtual configuration:
When described virtual configuration demand be by virtual for described underlying device for multiple virtual underlying device time, the mark number of described underlying device is configured to multiple virtual mark number, described multiple virtual mark number represents multiple virtual underlying device;
When described virtual configuration demand be by virtual for multiple underlying device be a virtual underlying device time, the mark number of described underlying device is configured to a virtual mark number, a described virtual mark number represents a virtual underlying device.
4. the method for virtual configuration underlying device as claimed in claim 3, is characterized in that, described foundation network attribute parameter comprises further to the step that described underlying device carries out virtual configuration:
Described virtual underlying device is distributed to by unduplicated for the port numbers of described underlying device.
5. the method for virtual configuration underlying device as claimed in claim 4, it is characterized in that, described virtual configuration information comprises mark number and the port numbers of described virtual underlying device.
6. a network equipment, is applied to software defined network, and described software defined network comprises controller and at least one underlying device, it is characterized in that:
Receiver module, for receiving the network attribute parameter that described underlying device transmits;
Virtual configuration module, for carrying out virtual configuration and generating virtual configuration information according to described network attribute parameter to described underlying device; And
Sending module, for the virtual configuration information of described underlying device is sent to described controller, described controller controls described underlying device according to described virtual configuration information.
7. network equipment as claimed in claim 6, it is characterized in that, described receiver module is also for receiving the virtual configuration demand of user, described virtual configuration demand be by virtual for described underlying device for multiple virtual underlying device or by virtual for multiple underlying device be a virtual underlying device, described network attribute parameter comprises the mark number of described underlying device and the port numbers of described underlying device.
8. network equipment as claimed in claim 7, is characterized in that:
When described virtual configuration demand be by virtual for described underlying device for multiple virtual underlying device time, the mark number of described underlying device is configured to multiple virtual mark number by described virtual configuration module, and described multiple virtual mark number represents multiple virtual underlying device;
When described virtual configuration demand be by virtual for multiple underlying device be a virtual underlying device time, the mark number of described underlying device is configured to a virtual mark number by described virtual configuration module, and a described virtual mark number represents a virtual underlying device.
9. network equipment as claimed in claim 8, is characterized in that:
Described virtual configuration module is also for distributing to described virtual underlying device by unduplicated for the port numbers of described underlying device, and the mark number of described virtual underlying device and port numbers constitute described virtual configuration information.
10. network equipment as claimed in claim 1, it is characterized in that, described network equipment is positioned at described controller place or described underlying device place.
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