CN102857907A - Equipment abstract in self-organization wireless local area network - Google Patents
Equipment abstract in self-organization wireless local area network Download PDFInfo
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Abstract
The invention relates to an equipment abstract in a self-organization wireless local area network. According to an implementing mode of the equipment abstract, a DHCP (Dynamic Host Configuration Protocol) service is not needed, a managed network device allocates an IP (Internet Protocol) address preserved in a link local address space in a wireless network for itself. The equipment abstract further responses a network frame received from the other network device on the basis of the allocated IP address of the preserved address space. The network frame can be a network flow frame, a control path frame and/or a management frame. The control path frame comprises a sound IP address and a destination IP address one of which corresponds to the self-allocated inside IP address in the preserved address space of the managed network device. The management frame comprises the self-allocated inside IP address of the managed network device and provides management for the managed network device in the wireless network through a single IP address when a virtual controller is configured for the wireless network.
Description
Technical field
The application relates in the ad-hoc wireless digital network device abstract (device abstraction) to the managed network equipment, relate in particular in the situation that in wireless digital networks, does not have DHCP (DHCP) service, the not managed network equipment of configuring static Internet protocol (IP) address, autogamy implicit IP address, for example access point.
Background technology
Wireless digital networks is included in the wireless network that moves under Institute of Electrical and Electric Engineers (IEEE) 802.11 standards, becomes more and more popular and more and more has practicality.Yet thing followed problem is to being subjected to the address allocation problem of managed network.Particularly, having the IP address allows the network equipment to be configured and to manage by the network management user interface by the network user or keeper.In addition, for wireless digital networks in other managed network equipment communicate, the managed network equipment of each in the wireless digital networks needs the IP address.
In the prior art, by manual configuration or DHCP service, this managed network equipment in Internet protocol the 4th version (IPv4) network is carried out IP address assignment.At first, the network user or keeper can manually be each the managed network equipments configuration static ip address in the wireless digital networks.The mode efficient of this manual configuration for the network equipment is not high and for example can lead to errors from artificial input.
The second, when can use the DHCP service in digital wireless network the time, the managed network equipment can be from DHCP service request IP address.The DHCP service is network equipment distributed network parameters from one or more Dynamic Host Configuration Protocol server automatically.When the network equipment that is configured to dhcp client was connected to network, this network equipment sent broadcast query message to Dynamic Host Configuration Protocol server, with from the essential information of Dynamic Host Configuration Protocol server request.IP address pool and information that the Dynamic Host Configuration Protocol server management is relevant with client configuration information, such as default gateway, domain name, name server and other server such as time server etc.After receiving effective request from client device, Dynamic Host Configuration Protocol server is network equipment distributing IP address, distributes the lease information (lease) of the time span of indication allocative efficiency, and distributes other IP configuration parameter, for example subnet mask and default gateway.Usually, the network equipment is initiated above-mentioned query messages immediately after startup.In addition, usually the network equipment can start with wireless digital networks in the communicating by letter of other main frame before finish the distribution of IP address.The DHCP service provides a kind of easy mode to come to be managed network equipment distributing IP address.Yet, in digital wireless network, can always can not obtain the DHCP service, and need extra resource consumption.
As the substitute mode of DHCP service, automatic proprietary Internet protocol addressing (APIPA) is used for specific configuration surroundings in order to client distributing IP address.By APIPA, to serve when unavailable at DHCP, client device is autogamy IP address and subnet mask automatically.Particularly, client device use APIPA automatically is himself interior IP address of configure reserved scope (for example, the IP address range from " 169.254.1.0 " to " 169.254.254.255 ").This client device also is the default category-B subnet mask " 255.255.0.0 " of himself configuration.The APIPA service also makes regular check on whether there is Dynamic Host Configuration Protocol server.If detect Dynamic Host Configuration Protocol server in network, then APIPA stops, and Dynamic Host Configuration Protocol server replaces APIPA networking address with the address of dynamic assignment.APIPA is generally used for having the small-sized configuration surroundings of non-route formula of limited client.But APIPA is client device configuration IP address under a few cases only usually, and is not used in managing network device, and can not construct and the complete network of operation function.
In addition, stateless address automatically disposes (SLAAC) and typically uses in Internet protocol the 6th version (IPv6) network.Owing to have SLAAC, when finding that by this (ICMPv6) router of internet control message protocol sixth version message is connected to the IPv6 network, the IPv6 network equipment can automatically carry out self-configuring.When first connection arrived network, the IPv6 network equipment sent the multicast request message to the link-local router and asks its configuration parameter.If be suitably configured, as response, router returns the router advertisement packet that comprises the network layer configuration parameter for this multicast request.In the IPv6 network, " fe80: :/10 " piece is preserved for the IP address and automatically disposes.Yet, SLAAC do not provide for the administration interface on the main frame that is coupled to the managed network equipment by cable network transparent, remain for implicit IP address in the address space of internal network communication in advance.Therefore, SLAAC can not provide succinct, friendly management of user's interface for the network user and/or keeper.In addition, SLAAC and be not suitable for the IPv4 network.
If when IPv6 SLAAC was inapplicable for application, wireless digital networks can be used the state configuration that has of DHCP the 6th version (DHCPv6), perhaps main frame can be disposed statically.Similarly, use above-mentioned DHCP or the static IP of discussing with reference to IPv4 to dispose DHCPv6 and the static IP configuration in the IPv6 network to their self-replications.
Summary of the invention
An aspect according to the application discloses a kind of like this method, and it can comprise:
Need not the dynamic host configuration protocol DHCP service, the IP address of the network equipment in the described network equipment distribute links local address space, wherein, the described network equipment is configuring static IP address not; And
IP address based in the described link local address space that distributes responds the network frame that receives from another equipment.
According to another aspect of the application, a kind of like this system is disclosed, it can comprise:
Processor;
Network interface;
Distributor gear is coupled to described processor, do not having in the situation of dynamic host configuration protocol DHCP service, and the IP address of described distributor gear in the network equipment distribute links local address space, wherein, the described network equipment is configuring static IP address not; And
Response means is coupled to described processor, and based on the IP address in the described link local address space of distributing, described response means responds the network frame that receives from another equipment.
Description of drawings
Can understand better the application's content with reference to following description and corresponding accompanying drawing, wherein, these are described and accompanying drawing is used for schematically describing this application's execution mode.
Figure 1A shows the illustrative radio digital network environment according to the application's execution mode;
Figure 1B is another illustrative radio digital network environment according to the application's execution mode;
Fig. 2 shows the schematic diagram according to the schematic IP address assignment of the application's execution mode;
Fig. 3 A is for being used for illustrating the flow chart according to the abstract processing of exemplary device of the application's execution mode;
Fig. 3 B for be used for illustrating according to the application's execution mode, at the flow chart of the subsequent treatment of the abstract processing of exemplary device shown in Fig. 3 A; And
Fig. 4 shows according to block diagram the application's execution mode, that be used for the system of device abstract processing.
Embodiment
In the following description, the purpose of understanding has for convenience provided some concrete details.Yet, it should be appreciated by those skilled in the art that in the situation of neither one or a plurality of detail or other component combination, also can be implemented in the described concept of the application and technology.In other case study on implementation, do not provide known realization or operation to avoid hiding in this application disclosed each embodiment.Should be appreciated that the application's content has covered and fallen into the interior modification that might occur of the application's spirit and scope, has been equal to and variant.
General introduction
The application's execution mode relates to for to the device abstract at the managed network equipment of ad-hoc wireless digital network, relate in particular in the wireless digital networks in the situation that does not have the DHCP service, the not managed network equipment of configuring static IP address, autogamy implicit IP address, for example access point.
The application's execution mode provides needs less human intervention, the scheme of configuration and managing network device in wireless network.By the scheme that provides herein, the managed network equipment determines whether the configuration DHCP service, and if so, then this managed network equipment further determines whether and can obtain the IP address by the DHCP service.If static IP configuration and DHCP dispose when unavailable, the managed network equipment is after starting or restarting, IP address in the link local address space in the autogamy wireless network, and one or more other the managed network equipments in wireless network send the IP address conflict inspection request that comprises its autogamy IP address.If the managed network equipment detects address conflict, will be for himself redistributing other IP address in this link local address space.In case the managed network equipment determine with wireless network in the IP address of miscellaneous equipment do not conflict the IP address time, this managed network equipment is implicit IP address with the IP address configuration of this autogamy.This IP address can but be not limited to IPv4 address and/or IPv6 address.Should be noted that above-mentioned link local address space can remain for internal network communication in advance, therefore, the managed network equipment does not need extra independent address or the reservation address pool reserved.In addition, unavailable and carry out manual configuration when improper by the network manager as DHCP, the link local address space is generally used for the automatic self-configuring of client device.For example, in the IPv4 network, the link local address space can be the APIPA space, comprises that " 169.254.1.0 " is to the address of " 169.254.254.255 "; In the IPv6 network, the link local address space can be the SLAAC address space, and it is reserved " fe80: :/10 " piece and automatically disposes for the IP address.
Based on implicit IP address, the managed network equipment then can respond the network frame that receives from another network equipment.In some embodiments, by network traffics are forwarded to the cable network that the managed network equipment is coupled from wireless client device, the managed network equipment responds to network frame.In some embodiments, as the response to network frame, the managed network equipment is in response to the control path frame that is received from another managed network equipment, and wherein this another managed network equipment also has the certainly distribution implicit IP address in the same reservation address space.Particularly, control path frame comprise the source address corresponding with this another managed network equipment and with the managed network equipment from purpose IP address corresponding to the inside IP that distributes.In one embodiment, this control path frame is sent to the second managed network equipment from the first managed network equipment, and to the second its software image version of managed network device requests and/or type.After the request that receives from the first managed network equipment, the second managed network equipment sends another control path frame that comprises the response of this request.After the response that receives from the second managed network equipment, the first managed network equipment check with the software image version of determining himself and/or type whether with that obtain from response frame, relevant with second managed network equipment software image version and/or type compatibility.In some embodiments, by in response to the management frames from another network equipment, the managed network equipment responds to network frame, thereby so that this another network equipment can dispose, monitor and/or manage the managed network equipment by management interface.In one embodiment, another network equipment is connected to cable network, and has distributed the IP address outside the headspace.
Subsequently, the managed network equipment participates in the Virtual Controller selection.The managed network equipment determines whether it is selected as the Virtual Controller for WLAN (wireless local area network) (WLAN).When if the managed network equipment is selected as the Virtual Controller of this WLAN, this managed network equipment further need to determine whether Virtual Controller IP configuration based on the configuration of this WLAN.If necessary, then this managed network equipment is that it oneself asks and receive the Virtual Controller IP address assignment of reserving outside the address space.
After distributing implicit IP address and/or Virtual Controller IP address to the managed network equipment, the managed network equipment can begin for example as the access point among the WLAN or Virtual Controller operation.Should be noted that this network possesses complete function, and the network equipment can be by host services management and configuration after finishing this processing.In addition, should also be noted that a plurality of managed network equipments from the angle of host server by abstract, this is because host server can be managed a plurality of network equipments by single ip address, and does not need to know the implicit IP address of each managed network equipment.
Computing environment
Figure 1A shows the illustrative radio digital network environment according to the application's execution mode.Figure 1A comprises that being coupled to cable network connects 110 controller 120 and server 130.In addition, Figure 1A comprises a plurality of managed network equipments 140, includes but not limited to access point 142, access point 144, access point 146 and the network printer 148 etc.Some managed network equipments, for example access point 144, and access point 146 and the network printer 148 are coupled to cable network and connect 110.Other managed network equipment, for example access point 142, are indirectly coupled to wired connection 110 by wireless connections 150, and wired connection 110 has the managed network equipment that directly is linked into wired connection 110.In addition, Figure 1A comprises a plurality of client devices 160, includes but not limited to client 162 and client 164.
Figure 1B shows another illustrative radio digital network environment according to the application's execution mode.Figure 1B comprises WLAN (wireless local area network) (WLAN) 100, is coupled to the server 130 of the access point 120 among the WLAN 100 by cable network connection 110.In this schematic network environment, all other managed network equipments 140 are coupled to access point 120 by wireless connections 150.The managed network equipment 140 includes but not limited to access point 142, access point 144, access point 146 and the network printer 148.In addition, Figure 1A comprises a plurality of client devices 160, includes but not limited to user side 162 and user side 164.
As shown in Figure 1A and 1B, typically have two kinds of network equipments in the WLAN framework, i.e. the managed network equipment 140 and client device 160." the managed network equipment " is often referred to and serves one or more client devices and by the network equipment of controller or the host server any user interface management by offering the network manager.For example, in Figure 1A, access point 142,144 and 146 can be by controller 120 management and configuration.
On the other hand, " client device " is often referred to the arbitrary network equipment that receives service from one or more managed network equipments.Client device is disposed and management by the network user, and can not be by the controller management in the network.For example, in Figure 1A and 1B, client device 162 (notebook) and client device 164 (smart phone) all are the example of client device 160.In addition, client device 160 can include but not limited to a upper PC, panel computer, personal digital assistant (PDA), game console (gaming console) and can pass through for example any miscellaneous equipment of the wireless protocol communications of IEEE 802.11 agreements.Client device can be that fix, that move or portable.Should be noted that in the wireless network term, stand, client device and the frequent Alternate of node, and do not have strict difference.
Traditionally, when client device has limited network connection (that is, can only communicate with other client device that uses the implicit IP address in the same subset), can distribute implicit IP address for client device.Yet, in these client devices, use implicit IP address can't allow the network manager when these client devices of management, to carry out device abstract, the network that possesses complete function can not be provided.The application's execution mode has provided and has been used for the network manager disposed and managed the managed network equipment in the situation that does not have the DHCP service improved procedure.Device abstract when disclosed system has not only provided equipment control in this article, and provided the network that possesses complete function.
By reserving the device abstract of autogamy implicit IP address in the address space
Fig. 2 shows explanation according to the schematic diagram of the schematic IP address configuration of the application's execution mode.In the present embodiment, the distribution of the IPv4 network address is illustrated, and the particular network address space is used for the implicit IP address distribution.But, disclosed method and system can be used in any IP addressing situation, and can use different IP network address spaces, inside under the disclosed spirit of the application not departing from.
In some embodiments, the managed network equipment of each in the ad hoc deployed wireless networks needs unique IP address to support the inner track control of each communication between devices.But, this unique IP address need not to be obtained by the outside or manage.Each managed network equipment can distribute implicit IP address for self, and it is the address space of the special reservation of internal network communication that this IP address belongs to.For example, the 169.254.X.X address space in the IPv4 network.Particularly, the managed network equipment can be implemented Hash (hash) algorithm to himself media interviews control (MAC) address, and detects IP address conflict by managed network equipment broadcast address analysis protocol (ARP) request to other autogamy IP address in same reservation address space.If the managed network equipment detects IP address conflict, then this managed network equipment with rollback and based on its MAC Address again for self distributing another to implement the IP address of hash algorithm gained.By using the autogamy addressing, behind normal the startup, the managed network equipment of a plurality of self-organizings can be as single entities.
A. starting state
According to some execution modes, at starting state, the managed network equipment of a cover is connected to same 2 layer networks.According to some execution modes, the managed network equipment can provide some basic service.For example, in the managed network equipment of self-organizing can become by automatic selection mechanism the Virtual Controller (or manager) of other managed network equipment.Note, under starting state, do not support external management system.
According to some execution modes, the managed network equipment can initially be broadcasted the default-service set identifier (SSID) with open safety, and the client Dynamic Host Configuration Protocol server that can connect obtains DHCP IP address and opens administration interface for self-organizing network by the uniform resource locator (URL) of internal security.According to a kind of execution mode, administration interface is based on the administration interface of network.According to another kind of execution mode, administration interface is the order line administration interface.According to another kind of execution mode, administration interface can utilize ancillary technique to think that Disabled user provides better accessibility.
According to some execution modes, by using administration interface, the user can set up a plurality of SSID for the private wireless networks network of certainly forgiving.A SSID represents the title of a WLAN.Be to realize communication each other, all wireless devices on WLAN must use same SSID.These SSID can support multiple auth type; for example; open authentication; WiFi protection access wildcard (WPA-PSK) or WiFi protection access 2 wildcards (WPA2-PSK); wired equivalent privacy (WEP); the IEEE 802.1x that is used for inner remote customer dialing authentication system (RADIUS) server is used for the MAC authentication of internal radius server etc.In these self-closings, private wireless networks network, client device can obtain IP by DHCP, and uses internal security URL to visit managing user interface (UI).But client device can not be connected to any other equipment in the cable network, but can interconnect between each client device.Only for the purpose of illustration, the client device (for example, client device 162) that is connected to self-closing, private network can have following configuration:
According to some execution modes, by administration interface, the SSID that can set up another kind of type is professional to realize the bridge between wireless client device and the cable network.Each SSID under the network bridge mode can be mapped to different virtual LAN (VLAN) label in the cable network.Client device can utilize the existing DHCP service among wired VLAN, perhaps uses static IP to intercom mutually or to communicate by letter with the miscellaneous equipment in the cable network.Similar with above-mentioned management SSID, this SSID can support same auth type set.But this SSID cannot be used to equipment control.Only for the purpose of illustration, the client device (for example, client device 164) that is connected to network bridge mode SSID can have following configuration:
After creating self-defining SSID, the part in the managed network equipment but be not all can break from wireless network to connect and be deployed as the managed network equipment of ad-hoc wireless.For example, in Figure 1A, access point 142 decoupling zero and be coupled to access point 144 by wireless connections 150 from cable network 110.Access point 144 has wired connection and as the wireless mesh access point.As another embodiment, in Figure 1B, all access points except access point 120 (comprising access point 142,144 and 146) are from cable network 110 decoupling zeros.
B. the network service that moves
Only by using autogamy IP address, self-organizing network can be so that the network of operation has all-IP connects and provide the reason of these services as follows.
The first, default and private SSID only need to be at client device and user interface but not connectivity is provided between the cable network.Therefore, according to the disclosed execution mode of the application, by DHCP relay, can be sent to management access point or Virtual Controller in the self-organizing network from the DHCP traffic of wireless client device.According to some execution modes, management access point or Virtual Controller have the built-in Dynamic Host Configuration Protocol server that distributes client address.In addition, each managed network equipment (for example, access point) also will be for internal security URL (for example, " instant.arubanetworks.com ") domain name system (DNS) query parse be the autogamy IP address of management access point or Virtual Controller, thereby the user of client device can the Access Management Access interface.In addition, all managed network equipments will for from all address resolution protocols (ARP) of client device request carry out ARP proxy, and the MAC Address that will manage access point or Virtual Controller places answer.According to some execution modes, from any broadcast traffic of client device, except DHCP and ARP request, all abandoned.Therefore, the communication of all between client device will at first arrive management access point or Virtual Controller.In case management access point or Virtual Controller receive client traffic, it can identify this flow is inner, and by any 2 layer networks forwarding mechanism with this traffic forwarding to the purpose subscriber equipment.
The second, owing on each managed network equipment, all move radius server, therefore support IEEE 802.1x and MAC authentication to internal radius server.In addition, user's voucher and/or certificate file also are stored on each managed network equipment (for example, access point) this locality.The managed network equipment uses loopback address (for example, 127.0.0.1) to carry out Extensible Authentication Protocol (EAP), and be independent of the IP address class type for managed network equipments configuration.
The 3rd, when SSID between wireless client device and cable network during the bridge joint flow, Frame does not need by any managed network equipment.Equally, Frame needn't be by the default VLAN (VLAN) of the managed network equipment.Therefore, the managed network equipment among the self-organizing WLAN is that intercommunication uses reservation IP address (for example, " 169.254.x.x ") can not affect client device and the cable network that can use different address spaces.Even the miscellaneous equipment in the network has used same reservation address space, these equipment also need to support same conflict resolution protocol, thereby any conflict all will automatically be detected and solve.
The 4th, provide the all-IP connectivity owing to reserve IP address space (for example, " 169.254.x.x ") at managed LA Management Room, and need not to consider that these equipment are to connect by wired or wireless link, thereby can support wireless mesh.
The complementary network service of C. enabling by Virtual Controller
According to some execution modes, for complementary network service (for example, RADIUS or 3 layers of forwarding) is provided, the keeper can be the independent IP address (being called " Virtual Controller IP ") of whole self-organizing network configuration in administration interface.This IP address will only be positioned to one of them of the managed network equipment among the WLAN, and as default (or local) VLAN.After Virtual Controller was enabled, the managed network equipment (for example, access point) can be supported the complementary network set of service.For example:
The first, the SSID under network bridge mode and the default VLAN can pass through internal security URL Access Management Access interface.
The second, the SSID of " privately owned " type transmits and network address translation by carry out 3 layers between wireless network and cable network, can additionally support the access to cable network.In addition, client device can be communicated by letter with the network equipment on cable network and/or the Internet, and but, its flow will flow through management access point or the Virtual Controller of packet being carried out source NAT.This has evaded the risk that cable network is subject to broadcast storm, and so that network can be supported visitor's internet access.
The 3rd, can support following Additional Verification type: 1) to the IEEE 802.1x of external radius server; 2) MAC to external radius server authenticates; 3) external forced network gateway (captive portal); And 4) in default VLAN, be used for visitor SSID and be used for the inside captive portals of network bridge mode SSID.
The 4th, can also support external management system by the Virtual Controller of enabling in the network.
The D.IP allocation example
Fig. 2 shows the IP allocation example according to the application's execution mode.Fig. 2 comprises three hurdles, and namely equipment 220, address style 240, and IP address 260.Notice that IP described herein distributes the only purpose for illustrating, can adopt other distribution according to principle described herein.With reference to Figure 1A, controller 120 can be assigned with static ip address " 192.168.1.1 "; Server 130 can be assigned with static ip address " 192.168.1.4 "; The network printer 148 can be assigned with static ip address " 192.168.1.3 " etc.
In addition, in one embodiment, access point 146 is chosen as the Virtual Controller in the network, access point 146 be assigned with virtual controlling IP (static ip address of distributed outside " 192.168.1.99 ") and implicit IP address " 169.254.a.b " (access point 146 autogamys, and can be used for and other access point between the control path communication).According to present embodiment, other access point of the non-Virtual Controller of this network only uses the autogamy implicit IP address of reserving in the address space.For example, access point 144 has autogamy implicit IP address " 169.254.c.d ", and access point 146 has autogamy implicit IP address " 169.254.e.f. ".In some embodiments, from the one-way hash function of media interviews control (MAC) address related with each managed network equipment, obtain each implicit IP address, be used for identifying uniquely each managed network equipment of WLAN.
But, should be noted that among the WLAN must not have Virtual Controller.Therefore, according to some execution modes, when not having Virtual Controller among the WLAN, access point 142 can only have autogamy implicit IP address " 169.254.a.b ", and need not to have any static virtual controller IP.
In addition, when having Virtual Controller among the WLAN, can provide additional network service.For example, can in network, provide radius server also to be its configuring static IP address (for example, " 196.168.1.4 ").In addition, also can in network, provide mandatory services device (captive server) also to dispose another static ip address (for example, " 196.128.1.5 ") for it.
When enabling the complementary network service by Virtual Controller, the wireless client device on the visitor SSID (for example, the client device among Figure 1A 162) can carry out following configuration:
When enabling the complementary network service by Virtual Controller, the wireless client device on the network bridge mode SSID (for example, the client device among Figure 1A 164) can carry out following configuration:
The device abstract process
Fig. 3 A and 3B show the exemplary device abstract process according to the application's execution mode.In operation, the managed network equipment such as access point etc. starts (operation 310).The described system of the application determines whether to be managed network equipments configuration static ip address (operation 315).If so, system will use static ip address as the IP address of the managed network equipment, and wherein, static ip address is usually by network manager's manual configuration.
If be not managed network equipments configuration static ip address, then the described system of the application further determines whether to be managed network equipments configuration DHCP service (operation 320).If the configuration DHCP service, then whether the described systems inspection of the application can obtain IP address (operation 325) from the DHCP service.If so, then system uses the IP address that obtains from the DHCP service as the IP address of the managed network equipment.
If the DHCP service is unavailable, and do not give managed network equipments configuration static ip address, then the managed network equipment will be in the reservation address space autogamy IP address that is used for internal network communication (operation 330).The managed network equipment is with backward other managed network equipment, be included in the one or more managed network equipment of autogamy implicit IP address in the identical reservation address space, broadcasting IP address conflict inspection request (operation 335), for example address resolution protocol (ARP) request.Then the managed network equipment determines whether to detect IP address conflict (operation 340).If detect IP address conflict, the IP address of autogamy before then the managed network equipment is forbidden being configured to reserve its implicit IP address in the address space, and by another IP address in the identical reservation address space of selection again autogamy IP address (operation 330).According to some execution modes, the managed network equipment calculates Hash to himself MAC Address and determines the autogamy IP address of self according to Hash result.If the managed network equipment detects IP address conflict, then the managed network equipment will calculate another through the IP address of Hash according to its MAC Address.The managed network equipment will repeat this autogamy process until the implicit IP address of other the managed network equipment in selected IP address and the network does not detect conflicts.
With reference now to Fig. 3 B,, the managed network equipment is configured to its implicit IP address to reserve the autogamy IP address (operation 345) in the address space subsequently.According to some execution modes, this managed network equipment other managed network equipment in network is carried out Virtual Controller and is selected (operation 350).The managed network equipment determines whether it is chosen as the Virtual Controller of network (operation 355).If so, whether managed network equipment Sampling network needs Virtual Controller IP configuration (operation 360).If necessary, the managed network equipment obtains Virtual Controller IP and distributes (operation 365), and starts Virtual Controller operation (operation 370).If the managed network equipment is not chosen as Virtual Controller, if perhaps network does not need Virtual Controller IP configuration, then the managed network equipment will start its network service operation, for example, and access point operation (operation 375).
The device abstract system
Fig. 4 is the block diagram that illustrates according to the system that is used for device abstract of the application's execution mode.As the nodal operation in the wireless digital networks, the managed network equipment 400 comprises: at least one or a plurality of wireless aerial 405 that can send and/or receive radio signals, can with the network interface 410 of cable network or wireless communication, the memory 430 that can process the processor 420 of computations and can store instruction and data.In addition, the managed network equipment 400 also comprises receiving mechanism 440, distributor gear 450, determines mechanism 460, transmitting mechanism 470, response means 480 and transmit mechanism 490, and these mechanisms are coupled in processor and the memory in the managed network equipment 400.The managed network equipment 400 can be used as FTP client FTP or server system or can be used as the client and server end in distributed computing environment (DCE) or cloud computing environment.
Wireless aerial 405 can be the known or existing any electric parts that receive signal, includes but not limited to transistor, capacitor, resistor, multiplexer, distribution, register, diode or other the known or following electric parts that will know.
Network interface 410 can be any communication interface, includes but not limited to modulator-demodulator, token ring interface, Ethernet interface, wireless IEEE 802.11 interfaces, cellular radio interface, satellite transmission interface or is used for any other interface of coupling network equipment.
Processor 420 can comprise one or more microprocessors and/or network processing unit.Memory 430 can comprise memory unit, such as dynamic random access memory (DRAM), static RAM (SRAM) etc.In one embodiment, the one or more implicit IP address of memory 430 storage, wherein, each implicit IP address is all unique relevant with the interior managed network equipment of WLAN (wireless local area network) (WLAN).Virtual Controller can be physical entity or the logic entity that can process the function set in the wireless mesh network.In one embodiment, implicit IP address derives from media interviews control (MAC) address of the one-way hash function relevant with the managed network equipment, the managed network equipment among the unique identification of the implicit IP address WLAN.
Receiving mechanism 440 receives one or more network frames by network interface 410.The network frame that receives can include but not limited to request and/or response, beacon frame, management frames, control path frame etc., as described in the application.In some embodiments, be selected as the Virtual Controller of wireless network in response to the managed network equipment 400, receiving mechanism 440 can receive the Virtual Controller IP address assignment for the managed network equipment 400.
Distributor gear 450 distributes the implicit IP address of the reservation address space that is used for internal network communication in the wireless network to the managed network equipment 400.In some embodiments, distributor gear 450 distributes implicit IP address in the situation that does not have the DHCP service.Particularly, in one embodiment, can't obtain from the DHCP service in response to definite IP address, distributor gear 450 distributes the address.In some embodiments, in response to not being any static IPs of the managed network equipment 400 configurations, distributor gear 450 distributes implicit IP address.In some embodiments, in response to detecting IP address conflict between the managed network equipment 400 and other managed network equipment, distributor gear 450 is assigned as different implicit IP address in the same address space that internal network communication reserves to the managed network equipment 400 again.Particularly, distributor gear 450 can be carried out the Hash to media interviews control (MAC) address relevant with the managed network equipment 450, and obtains implicit IP address from Hash result.
Determine that mechanism 460 can determine whether to have disposed static ip address for the managed network equipment 400.In addition, determine that mechanism 460 can determine whether to have disposed the DHCP service for the managed network equipment 400.In one embodiment, in response to having disposed the DHCP service for the managed network equipment 400, determining that mechanism 460 also can determine whether can be from DHCP service acquisition IP address.In some embodiments, determine that mechanism 460 can determine whether to have IP address conflict between the managed network equipment 400 and other the managed network equipment in same WLAN.Particularly, determine that mechanism 460 checks IP address conflict by sending address resolution protocol (ARP) request to other managed network equipment, wherein said other managed network equipment has also distributed the IP address certainly at the same reservation address space that is used for internal network communication.In addition, determine that mechanism 460 can determine the Virtual Controller whether managed network equipment 400 is selected as for wireless network.
Transmitting mechanism 470 sends network frames, network frame include but not limited to control the path frame or to the response of control path frame, management frames or to the response of management frames, be received from the network traffics frame of wireless client device etc.In some embodiments, transmitting mechanism 470 broadcasting or multileaving network frames.In other embodiments, transmitting mechanism 470 sends network frame to the network equipment of the specific network equipment such as access point, controller, router or any other type.In some embodiments, for example when the managed network equipment 400 was communicated by letter with other the managed network equipment in the wireless network, transmitting mechanism 470 sent network frame by radio network interface or wireless aerial.In other embodiments, when the Network that for example will be received from wireless client device when the managed network equipment 400 was transmitted to cable network, transmitting mechanism 470 sent network frame by wired network interface.
Response means 480 can based on the implicit IP address that has distributed of reserving in the address space, respond the network frame that receives from another network equipment.Particularly, in some embodiments, response means 480 is by responding network frame in response to the control path frame that receives from another managed network equipment, and wherein said another managed network equipment has in same reservation address space from the implicit IP address that distributes.Control path frame can comprise corresponding to the source IP address of described another managed network equipment with corresponding to the purpose IP address of distributor gear 450 from the inside IP that distributes.In some embodiments, response means 480 is by responding network frame in response to the management frames from described another network equipment, thereby makes this another network equipment be configured, to monitor and/or to manage the managed network equipment by administration interface.In one embodiment, described another network equipment is connected to cable network and distributing IP address outside reserving address space.
By with receiving mechanism 440, distributor gear 450, determine the co-operate of mechanism 460, transmitting mechanism 470 and response means 480, transmit mechanism 490 and network traffics can be forwarded to cable network from wireless client device, the managed network equipment 400 is coupled in this cable network by network interface 410.
According to the application's execution mode, the network service that the managed network equipment 400 provides includes but not limited to: to inside and/or outer remote subscriber dialing Verification System (RADIUS) server carry out IEEE (IEEE) 802.1x authentication; To inside and/or external radius server carry out MAC authentication; Provide built-in DHCP (DHCP) to serve to distribute the IP address of wireless client device; The internal security administration interface; 3 layers of forwarding; Wireless network and be coupled to network address translation (NAT) service between the cable network of the network equipment; Inside and/or external forced network gateway; And the external management system etc. that is used for the network equipment of management wireless network.It should be noted that in some embodiments, enable the subset (for example RADIUS or 3 layers of forwarding) of above-mentioned network service, the system manager can be the independent IP address of whole ad-hoc wireless net configuration by administration interface.Only come into force on one of managed network equipment in WLAN in independent IP address, described equipment is selected as the Virtual Controller of wireless network, and be positioned on default (or local) VLAN (VLAN).Because enabling of Virtual Controller, the managed network equipment of all in the wireless network (for example access point) can exchange the subset of support network services at least by the communication of a plurality of controls path frame.
The application can realize in hardware, software or its combination.Understand such as this area, work under the control of the target software that disclosed hardware platform can move in other operating systems of LINUX variant operating system or suitable embedded device among the application.The application can realize in the centralized mode in a computer system, and the distributed mode that perhaps is dispersed on the computer system of some interconnection of being coupled to network with different elements realizes.The typical combination of hardware and software can be the access point with computer program, and this computer program makes it carry out method as herein described being loaded and carrying out timed unit.
The application can also be embedded in the mode of nonvolatile in the computer-readable recording medium, this computer-readable recording medium comprises all features that method as herein described can be carried out, and this computer-readable recording medium can be carried out these methods in being loaded into computer system the time.Computer program herein refers to the expression of a series of instructions of any language, code or symbol, it is intended to make the system with information processing capability directly to carry out specific function, perhaps carries out specific function after following steps one or both of: a) be transformed into another kind of language codes or symbol; B) reproduce with the different material form.
Herein, " access point " (AP) generally refers to for any known or acceptance point that may become afterwards known suitable wireless access technology.Particularly, term AP is not intended to be restricted to the AP based on IEEE 802.11.AP generally is used for making wireless device be connected to cable network by various communication standards.
Herein, " WLAN (wireless local area network) " (WLAN) (for example generally refers to use some wireless distribution modes, wireless frequency expansion or wireless OFDM) link the communication network of two or more equipment, and generally be provided to the connection of the Internet by access point; Thereby be provided at the mobility that keeps network connection in the local area network (LAN) coverage for the user.
Herein, term " mechanism " generally refers to provide the parts of the system or equipment of one or more functions, includes but not limited to software part, electronic unit, mechanical part, electromechanical component etc.
Herein, term " execution mode " generally refers to in exemplary and nonrestrictive mode embodiments of the present invention being described.
It will be appreciated by those skilled in the art that above-described embodiment and execution mode are exemplary, and do not limit the application's scope.The above-described embodiment that after reading specification and studying accompanying drawing, it will be apparent to those skilled in the art and whole arrangements of execution mode, strengthen, be equal to and improvement is included in true spirit of the present invention and the scope.Therefore, following appending claims has comprised all such modifications of falling in the application's true spirit and the scope, arranged and has been equal to.
Although described the present invention according to different execution modes, the present invention should not only limit to the execution mode of these descriptions, but may be embodied as interior modification and the change of spirit and scope of appended claims.It is illustrative and not restrictive that specification should be considered to.
Claims (24)
1. method comprises:
Need not the dynamic host configuration protocol DHCP service, the IP address of the network equipment in the described network equipment distribute links local address space, wherein, the described network equipment is configuring static IP address not; And
IP address based in the described link local address space that distributes responds the network frame that receives from another equipment.
2. the method for claim 1, wherein described IP address comprises Internet protocol the 4th version IPv4 address or Internet protocol the 6th version IPv6 address.
3. method as claimed in claim 2, wherein, described link local address space comprises that automatic proprietary Internet protocol addressing APIPA space or stateless address dispose the SLAAC address space automatically.
4. the method for claim 1 also comprises:
The described network equipment determines whether to have disposed described DHCP service; And
If be configured the DHCP service, determine whether and to obtain the IP address from described DHCP service.
5. the method for claim 1 also comprises:
IP address conflict inspection request is sent to one or more other network equipments; And
If detect IP address conflict, the described network equipment is redistributed IP addresses different in the link local address space.
6. the method for claim 1, wherein described network frame is from the control path frame that described another network equipment receives,
Wherein, the IP address of distributing is corresponding to the purpose IP address in the described network frame, and described network frame comprises the source IP address in the described reservation link local address space of distributing to described another network equipment.
7. the method for claim 1, wherein described network frame is the management frames that receives from described another network equipment, and described another network equipment has been assigned with the IP address outside the described reservation link local address space.
8. method as claimed in claim 7 also comprises:
The described network equipment determines whether to be selected as the controller for a plurality of network equipments of described wireless network; And
If the described network equipment is selected as controller, then receive the IP address assignment that is used for described controller.
9. method as claimed in claim 8, wherein, the IP address assignment that is used for described controller that obtains is static ip address, the described network equipment is implicit IP address for the IP address of himself distribution.
10. method as claimed in claim 9, wherein, the described network equipment provides following one or more services:
To inside and/or outer remote subscriber dialing Verification System RADIUS carry out IEEE802.1x authentication;
Carry out the MAC authentication to inner and/or outside RADIUS;
Built-in dynamic host configuration protocol DHCP service is provided, is wireless client device distributing IP address;
The internal security administration interface;
The 3rd layer of forwarding;
Described wireless network and be coupled to network address translation NAT service between the cable network of the described network equipment;
Inside and/or external forced network gateway; And
External management system for the network equipment of managing described wireless network.
11. the method for claim 1 also comprises:
The described network equipment is forwarded to the cable network that is coupled in the described network equipment with network traffics from wireless client device.
12. method as claimed in claim 7 wherein, is used single ip address by described another network equipment, manages the network equipment that has been assigned with the IP address in the described reservation link local address space in the described wireless network.
13. a system comprises:
Processor;
Network interface;
Distributor gear is coupled to described processor, do not having in the situation of dynamic host configuration protocol DHCP service, and the IP address of described distributor gear in the network equipment distribute links local address space, wherein, the described network equipment is configuring static IP address not; And
Response means is coupled to described processor, and based on the IP address in the described link local address space of distributing, described response means responds the network frame that receives from another equipment.
14. system as claimed in claim 13, wherein, described IP address comprises Internet protocol the 4th version IPv4 address or Internet protocol the 6th version IPv6 address.
15. system as claimed in claim 14, wherein, described link local address space comprises that automatic proprietary Internet protocol addressing APIPA space or stateless address dispose the SLAAC address space automatically.
16. system as claimed in claim 13 further comprises:
Determine mechanism, be coupled to described processor, described definite mechanism determines whether to have disposed described DHCP service,
Wherein, if be configured the DHCP service, then described definite mechanism further determines whether and can obtain the IP address from described DHCP service.
17. system as claimed in claim 13 also comprises:
Transmitting mechanism is coupled to described processor, and described transmitting mechanism sends to one or more other network equipments in the described wireless network with IP address conflict inspection request,
Wherein, if detect IP address conflict, then described distributor gear is redistributed by the described network equipment and is reserved different IP address in the link local address space.
18. system as claimed in claim 13, wherein, described network frame is from the control path frame that described another network equipment receives,
Wherein, the IP address of distributing is corresponding to the purpose IP address in the described network frame, and described network frame comprises the source IP address in the described reservation link local address space of distributing to described another network equipment.
19. system as claimed in claim 13, wherein, described network frame is the management frames that receives from described another network equipment, and described another network equipment has been assigned with the IP address outside the described reservation link local address space.
20. system as claimed in claim 19, wherein, described definite mechanism determines further whether the described network equipment is selected as the controller for a plurality of network equipments of described wireless network,
Described system also comprises:
Receiving mechanism is coupled to described processor, if the described network equipment is selected as controller, then described receiving mechanism receives the IP address assignment that is used for described controller.
21. system as claimed in claim 20, wherein, the IP address assignment that is used for described controller that obtains is static ip address, and the described network equipment is implicit IP address for the IP address that himself distributes.
22. system as claimed in claim 21, wherein, the described network equipment provides following one or more services:
To inside and/or outer remote subscriber dialing Verification System RADIUS carry out IEEE802.1x authentication;
Carry out the MAC authentication to inner and/or outside RADIUS;
Built-in dynamic host configuration protocol DHCP service is provided, is wireless client device distributing IP address;
The internal security administration interface;
The 3rd layer of forwarding;
Described wireless network and be coupled to network address translation NAT service between the cable network of the described network equipment;
Inside and/or external forced network gateway; And
External management system for the network equipment of managing described wireless network.
23. system as claimed in claim 13 also comprises:
Transmit mechanism, be coupled in described processor, described forwarding mechanism is forwarded to the cable network that is coupled in the described network equipment with network traffics from wireless client device.
24. system as claimed in claim 19 wherein, uses single ip address by described another network equipment, manages the network equipment that has been assigned with the IP address in the described reservation link local address space in the described wireless network.
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| CN 201110180250 CN102857907A (en) | 2011-06-30 | 2011-06-30 | Equipment abstract in self-organization wireless local area network |
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| CN 201110180250 CN102857907A (en) | 2011-06-30 | 2011-06-30 | Equipment abstract in self-organization wireless local area network |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103237093A (en) * | 2013-04-17 | 2013-08-07 | 厦门亿联网络技术股份有限公司 | Self-adaptive IP (internet protocol) address acquiring method |
| CN106027696A (en) * | 2016-07-20 | 2016-10-12 | 上海斐讯数据通信技术有限公司 | Method and WIFI device for providing spare IP address |
| CN106302853A (en) * | 2016-08-11 | 2017-01-04 | 青岛海信宽带多媒体技术有限公司 | A kind of method carrying out network configuration and terminal thereof |
| CN108023973A (en) * | 2017-11-13 | 2018-05-11 | 下代互联网重大应用技术（北京）工程研究中心有限公司 | The method and device of cloud net interconnection based on geographical coordinate configuration of IP v6 addresses |
| WO2020199797A1 (en) * | 2019-04-04 | 2020-10-08 | 乐鑫信息科技（上海）股份有限公司 | Node conflict detection method and apparatus, device, and storage medium |
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2011
- 2011-06-30 CN CN 201110180250 patent/CN102857907A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103237093A (en) * | 2013-04-17 | 2013-08-07 | 厦门亿联网络技术股份有限公司 | Self-adaptive IP (internet protocol) address acquiring method |
| CN106027696A (en) * | 2016-07-20 | 2016-10-12 | 上海斐讯数据通信技术有限公司 | Method and WIFI device for providing spare IP address |
| CN106302853A (en) * | 2016-08-11 | 2017-01-04 | 青岛海信宽带多媒体技术有限公司 | A kind of method carrying out network configuration and terminal thereof |
| CN106302853B (en) * | 2016-08-11 | 2019-09-17 | 青岛海信宽带多媒体技术有限公司 | A kind of method and its terminal carrying out network configuration |
| CN108023973A (en) * | 2017-11-13 | 2018-05-11 | 下代互联网重大应用技术（北京）工程研究中心有限公司 | The method and device of cloud net interconnection based on geographical coordinate configuration of IP v6 addresses |
| WO2020199797A1 (en) * | 2019-04-04 | 2020-10-08 | 乐鑫信息科技（上海）股份有限公司 | Node conflict detection method and apparatus, device, and storage medium |
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