WO2016184317A1 - 一种对ap进行配置的方法、装置和系统 - Google Patents

一种对ap进行配置的方法、装置和系统 Download PDF

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Publication number
WO2016184317A1
WO2016184317A1 PCT/CN2016/081217 CN2016081217W WO2016184317A1 WO 2016184317 A1 WO2016184317 A1 WO 2016184317A1 CN 2016081217 W CN2016081217 W CN 2016081217W WO 2016184317 A1 WO2016184317 A1 WO 2016184317A1
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WIPO (PCT)
Prior art keywords
configuration
fingerprint
parameter
information
service
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PCT/CN2016/081217
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English (en)
French (fr)
Inventor
邓高亮
李月
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阿里巴巴集团控股有限公司
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Publication of WO2016184317A1 publication Critical patent/WO2016184317A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/12—Avoiding congestion; Recovering from congestion
    • H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0861—Network architectures or network communication protocols for network security for authentication of entities using biometrical features, e.g. fingerprint, retina-scan
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a method, an apparatus, and a system for configuring an AP.
  • WLAN Wireless Local Area Networks
  • AC Access Controller, Wireless Controller
  • AP Access Point
  • the AC is responsible for managing and controlling the AP.
  • the AP provides wireless clients to the LAN. Bridge function.
  • cloud AC is the development trend of the future AC.
  • the so-called cloud AC is to put the functions of AC management and control into the cloud, that is, deploy an AC cluster in the cloud, and the ACs in the AC cluster can Reflected as virtual AC (vAC).
  • vAC virtual AC
  • Each AP can share the AC cluster.
  • This architecture is characterized by low cost, easy management, virtualization, and scalable network architecture. It is very convenient for wireless network transformation and expansion, which can effectively reduce IT cost and network complexity.
  • the present invention provides a method, apparatus, and system for configuring an AP to reduce configuration difficulty and maintenance cost in a cloud AC environment.
  • the present invention provides a method for configuring an access point AP, the method comprising:
  • the AC in the cloud access controller AC cluster After receiving the configuration request of the AP, the AC in the cloud access controller AC cluster requests and acquires configuration information for the AP from the network management device.
  • the AC is a discovery request that the load sharer LB receives the AP. After the packet is received, it is allocated to the AP from the cloud AC cluster.
  • the method further includes: the AC and the AP establish a control and configuration protocol CAPWAP tunnel of the wireless access point;
  • the AC receives a configuration request of the AP through the CAPWAP tunnel.
  • the method further includes:
  • the AC After receiving the configuration update information from the network management device for the AP, the AC sends the configuration update information to the AP.
  • the method further includes:
  • the AC receives the operation information sent by the AP, and sends the operation information to the network management device.
  • the AC saves configuration information for the AP
  • the configuration parameter fingerprint generated by the AC is locally generated and configured to generate a configuration parameter fingerprint, and the generated configuration parameter fingerprint is determined. Whether the configuration parameter fingerprints carried by the configuration request are consistent, if yes, the indication information that does not need to be updated is returned to the AP; if not, the locally saved configuration information for the AP is sent to the AP.
  • the configuration parameter fingerprint includes a fingerprint of each service subtype parameter, and each of the service subtype parameter fingerprints uses the sub-types after the configuration information of the AP is divided into subtypes according to the service type.
  • Whether the fingerprint of the configuration parameter generated by the judgment is consistent with the fingerprint of the configuration parameter carried in the configuration request includes: comparing whether the fingerprint of each service subtype parameter generated by the AC and the fingerprint of each service subtype parameter carried by the configuration request are consistent ;
  • the service subtype configuration information corresponding to the inconsistent service subtype parameter fingerprint is sent to the AP in the locally saved configuration information of the AP.
  • the configuration parameter fingerprint further includes a global service parameter fingerprint, where the global service parameter fingerprint is generated by using all the service subtype parameter fingerprints, or is directly generated by using the configuration information of the AP;
  • the method further includes:
  • the method further includes:
  • the AC parses the configuration parameter fingerprint from the vendor specific payload Vendor Specific Payload of the configuration request.
  • the present invention also provides a method for configuring an access point AP, the method comprising:
  • the network management device receives the configuration request for the AP sent by the AC in the cloud AC cluster;
  • the configuration information for the AP is returned to the AC, so that the AC sends the configuration information to the AP.
  • the method further includes:
  • the network management device records an association relationship between the AC and the AP
  • the method further includes:
  • the network management device receives the operation information of the AP reported by the AC.
  • the present invention also provides a method for configuring an access point AP, the method comprising:
  • the AP After the AP is disconnected from the AC in the cloud AC cluster and re-establishes the connection, the AP generates configuration parameter fingerprints by using the configuration information of the AP, and sends a configuration request including the configuration parameter fingerprint to the AC.
  • generating configuration parameter fingerprints by using configuration information of the AP includes:
  • the service subtype parameter fingerprints are generated by using the configuration information of each subtype.
  • generating the configuration parameter fingerprint by using the configuration information of the AP further includes:
  • the global service parameter fingerprint is generated by using all the service subtype parameter fingerprints or directly using the configuration information of the AP.
  • the configuration parameter fingerprint is carried in a Vendor Specific Payload of the configuration request.
  • the present invention also provides an apparatus for configuring an AP, the apparatus is disposed in an AC in a cloud AC cluster, and the apparatus includes: a first interaction unit and a second interaction unit;
  • the first interaction unit is configured to receive a configuration request of the AP, and configure a configuration letter obtained by the second interaction unit The information is sent to the AP through a configuration response;
  • the second interaction unit is configured to request, after the first interaction unit receives the configuration request of the AP, the configuration information for the AP to the network management device.
  • the AC is allocated by the LB to the AP from the cloud AC cluster after receiving the discovery request packet of the AP.
  • a channel establishing unit is configured to establish a CAPWAP tunnel between the AC and the AP;
  • the first interaction unit receives a configuration request of the AP through the CAPWAP tunnel.
  • the second interaction unit is further configured to receive configuration update information of the network management device for the AP;
  • the first interaction unit is further configured to send the configuration update information to the AP.
  • the first interaction unit is further configured to receive operation information sent by the AP;
  • the second interaction unit is further configured to send the operation information to the network management device.
  • the device further includes:
  • a maintenance unit configured to save configuration information for the AP
  • a fingerprint processing unit configured to: after the AC is disconnected from the AP and re-established the connection, if the first interaction unit receives the configuration request of the AP, use the maintenance unit to save the AP
  • the configuration information generates a configuration parameter fingerprint, and determines whether the generated configuration parameter fingerprint is consistent with the configuration parameter fingerprint carried in the configuration request.
  • the first interaction unit is further configured to: if the judgment result of the fingerprint processing unit is consistent, return indication information that does not need to be configured to be updated to the AP; if not, save the AP for the AP The configuration information is sent to the AP.
  • the configuration parameter fingerprint includes a fingerprint of each service subtype parameter
  • the fingerprint processing unit is configured to: after the configuration information of the AP is divided into subtypes according to the service type, respectively generate the fingerprints of the service subtype parameters by using the configuration information of each subtype; and compare each service sub-generated by the AC Whether the type parameter fingerprint and the fingerprint of each service subtype parameter carried by the configuration request are consistent;
  • the first interaction unit is further configured to: if the comparison result of the fingerprint processing unit is consistent, return indication information that is not required to be configured to the AP; if not, save the AP for the AP In the configuration information, the service subtype configuration information corresponding to the inconsistent service subtype parameter fingerprint is sent to the AP.
  • the configuration parameter fingerprint further includes a global service parameter fingerprint
  • the fingerprint processing unit is further configured to generate the global service parameter fingerprint by using all the service subtype parameter fingerprints, or directly generate the global service parameter fingerprint by using the AP configuration information; and compare each of the AC generated And determining whether the global service parameter fingerprint generated by the AC is consistent with the global service parameter fingerprint carried by the configuration request, before the service sub-type parameter fingerprint and the service sub-type parameter fingerprint of the configuration request are consistent;
  • the first interaction unit is further configured to: if the determination result of the fingerprint processing unit is consistent, perform the returning indication information that does not need to be configured to be updated to the AP; if not, continue to perform the separately comparing the Whether the fingerprint of each service subtype parameter generated by the AC and the fingerprint of each service subtype parameter carried by the configuration request are consistent.
  • the device further includes:
  • a parsing unit configured to parse the configuration parameter fingerprint from the Vendor Specific Payload of the configuration request, and provide the configuration parameter fingerprint to the fingerprint processing unit.
  • the present invention also provides an apparatus for configuring an AP, the apparatus being disposed in a network management apparatus, the apparatus comprising:
  • a receiving unit configured to receive a configuration request for an AP sent by an AC in a cloud AC cluster
  • a sending unit configured to return configuration information for the AP to the AC, so that the AC sends the configuration information to the AP.
  • the device further includes:
  • a recording unit configured to record an association relationship between the AC and the AP
  • the sending unit is further configured to send configuration update information for the AP to the AC according to the association relationship, so that the AC sends the configuration update information to the AP.
  • the receiving unit is further configured to receive operation information of the AP reported by the AC.
  • the present invention also provides an apparatus for configuring an AP, the apparatus is disposed on an AP, and the apparatus includes:
  • a fingerprint generating unit configured to generate a configuration parameter fingerprint by using configuration information of the AP after the AP is disconnected from the AC in the cloud AC cluster and re-established the connection;
  • a sending unit configured to send, to the AC, a configuration request that includes the configuration parameter fingerprint
  • a receiving unit configured to receive indication information that the AC returns without configuration update or configuration information for the AP.
  • the fingerprint generating unit is specifically configured to: after the configuration information of the AP is divided into subtypes according to the service type, respectively generate the business subtype parameter fingerprints by using the configuration information of each subtype.
  • the fingerprint generating unit is further configured to generate a global service parameter fingerprint by using all the service subtype parameter fingerprints or directly using the configuration information of the AP.
  • the sending unit carries the configuration parameter fingerprint in a Vendor Specific Payload of the configuration request.
  • the present invention also provides a system for configuring an AP, the system comprising: a network management device, a cloud AC cluster, and an AP.
  • the management function of the AP is completed by the unified network management device.
  • the AC After receiving the configuration request of the AP, the AC requests and acquires configuration information for the AP from the network management device, and returns. Give the AP.
  • This configuration eliminates the need to configure AP configuration information on all ACs in the cloud AC cluster. You only need to configure the configuration information of the AP in the network management device and then send the configuration information to the AP. This reduces the configuration difficulty and maintenance cost. .
  • Figure 1 is a system architecture diagram on which the present invention is based
  • FIG. 3 is a schematic diagram of a format of a vendor specific load according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of an apparatus installed in an AC according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of an apparatus installed in a network management apparatus according to an embodiment of the present invention.
  • FIG. 6 is an apparatus for setting an AP according to an embodiment of the present invention.
  • the core idea of the present invention is to remove the management function of the AP to the AP in the AC cluster, and only maintain the control function of the AC to the AP, and unify the management functions of the AP to the AP to ensure that the configuration of the AP is unified. .
  • FIG. 1 is a system architecture diagram based on the present invention.
  • the system mainly includes: a cloud AC cluster, a network management device, an LB (load balancer), and an AP.
  • network management device, LB and cloud AC set The clusters are set in the cloud.
  • the network management device, LB, and cloud AC clusters can be located on the same server or on different servers.
  • the ACs in the cloud AC cluster can also be located on the same server or on different servers. Can be located in different areas, such as some AC located in Beijing, some AC located in Shanghai and so on.
  • the cloud AC cluster and the LB can be deployed on a virtual machine of a public cloud (a public cloud usually refers to a cloud environment provided by a service provider based on a public network), and at this time, each AC in the cloud AC cluster It is in the form of a virtual AC (vAC).
  • vAC virtual AC
  • the LB can also exist in the form of a cluster, and load balancing can also be implemented within the LB cluster.
  • the "cloud” referred to in the embodiment of the present invention refers to a software platform adopting application virtualization technology, through which various types of commonly used software can be encapsulated in an independent virtualized environment.
  • the cloud AC cluster is the AC software cluster in the virtualized environment, and each AC in the cluster exists in the form of virtualization software.
  • the network management device includes the following functions:
  • the configuration information for the AP is returned to the vAC.
  • vAC mainly includes the following functions:
  • the configuration request for the AP saved locally by the vAC is used to generate the configuration parameter fingerprint by using the locally saved configuration information for the AP. And determining whether the generated configuration parameter fingerprint is consistent with the configuration parameter fingerprint carried in the configuration request. If they are consistent, the indication information that does not need to be updated is returned to the AP; if not, the locally saved configuration for the AP is saved. Information is sent to the AP.
  • LB mainly includes the following functions:
  • each vAC in the AC cluster Regularly obtain information about each vAC in the AC cluster, such as load information and version information.
  • the LB can obtain information about each vAC in the AC cluster from the network management platform.
  • the LB can allocate an AC to the AP according to the load balancing principle. It can further combine other factors, such as whether the AP is connected to the vAC and the connection fails, the distance between the AP and the vAC, the software version of the AP and the vAC, and whether the AP and the vAC belong to the same carrier. ,and many more.
  • the AP mainly includes the following functions:
  • the configuration parameter fingerprint is generated by using the configuration information of the vAC, and the configuration parameter fingerprint is carried in the configuration request and sent to the vAC.
  • FIG. 2 is a flowchart of a method according to an embodiment of the present invention. As shown in FIG. 2, the method may include the following steps:
  • a discovery request packet is sent to the LB.
  • the address information of the LB may be pre-configured on the AP, and the AP sends a discovery request message to the LB according to the address information.
  • the domain name can be directed to the LB cluster.
  • the address information of the LB can be any LB in the LB cluster, or the load in the LB cluster is small.
  • LB that is, load balancing can be implemented in the LB cluster, and the load sharing is implemented on the domain name resolution server). It can also be the LB closest to the AP in the LB cluster, and so on.
  • the LB allocates a vAC to the AP from the cloud AC cluster according to the load sharing principle.
  • the information about each vAC in the cloud AC cluster can be obtained periodically, including load information, and can also include Version information, etc.
  • each vAC can periodically report its own related information to the network management device, and the network management device is responsible for managing each device in the network, and the LB periodically acquires information about each vAC from the network management device.
  • the architecture does not require direct connection between the LB and each vAC, which facilitates management and maintenance.
  • the LB can also directly obtain relevant information from each vAC.
  • the vAC can be allocated to the AP according to the load balancing principle.
  • the foregoing load information may include, but is not limited to, one or any combination of CPU utilization, memory utilization, bandwidth utilization, and uplink rate of the AP.
  • the uplink rate of the AP refers to the ratio of the number of APs currently connected in the vAC to the number of APs that the vAC can accommodate.
  • other principles can be combined, for example, assigning the vAC to the AP closest to the AP, and assigning the vAC with the same software version to the AP.
  • the LB carries the address information of the allocated vAC in the discovery response packet and returns it to the AP.
  • the AP parses the address information of the vAC from the discovery response packet, and establishes a connection with the vAC according to the address information in 204, that is, establishes a CAPWAP tunnel.
  • the process of establishing a CAPWAP tunnel between an AP and a vAC is not described in detail.
  • the AP sends a configuration request to the vAC.
  • the vAC sends a configuration request to the network management device.
  • the vAC only has the control function for the AP, that is, the control of the CAPWAP tunnel between the AP and the vAC, and the management function is detached, and the management function is completed by the network management device, such as configuring the AP, managing the wireless terminal, and the like.
  • the network management device returns configuration information for the AP to the vAC through a configuration response.
  • the network management device provides a management interface to the network administrator, and the network administrator configures the AP through the management interface, that is, the network management device acquires configuration information for the AP through the management interface, and stores and maintains the information locally.
  • the configuration information for the AP is returned to the vAC.
  • the configuration information of all the APs is uniformly configured and maintained on the network management device, and only needs to be delivered to the vAC that the AP accesses, and the configuration information of the AP is not required to be configured and maintained on all the vACs.
  • it can reduce the complexity and maintenance costs, on the other hand, it can effectively ensure the global unification.
  • the vAC sends the configuration information of the AP to the AP, and the AP uses the configuration information to perform local configuration, and the online connection succeeds.
  • the network management device maintains the association relationship between the vAC and the AP. If the network administrator updates the configuration of the AP, the vAC associated with the AP can be learned according to the association relationship, and the configuration update information is sent to the associated The vAC sends the configuration update information to the AP, and the AP updates the local configuration by using the configuration update information.
  • the AP reports the running information to the associated vAC during the running process.
  • the interaction between the AP and the vAC is performed through the CAPWAP tunnel.
  • the vAC reports the running information of the AP to the network management device, so that the network administrator can grasp the running information of each AP through the management interface.
  • a configuration request is sent to the vAC. Because the vAC needs to know whether the AP configuration and the local configuration are consistent, if all the configuration information is reported to the vAC for comparison, the data volume of the configuration request is very large, and a preferred implementation manner is provided for the embodiment of the present invention, that is, The configuration parameter fingerprint is carried in the configuration request sent by the AP to the vAC.
  • the configuration parameter fingerprint carried by the vAC comparison configuration request is consistent with the configuration parameter fingerprint generated by using the locally saved configuration parameter information for the AP. If yes, step 213 is performed, and the indication information that the configuration update is not required is returned to the AP. If not, execute 214 to return the locally saved configuration information for the AP to the AP.
  • the configuration parameter fingerprint may include a global service parameter fingerprint and each service subtype parameter fingerprint.
  • the vAC and the AP use the same method in generating the global service parameter fingerprint and the fingerprint of each service subtype parameter.
  • the process of generating the fingerprint of each service subtype parameter may include:
  • the AP configuration information is divided into subtypes according to the service type.
  • the AP configuration information is divided into subtypes such as radio frequency parameters, wireless service parameters, public network connection methods, and security configuration parameters.
  • the fingerprint algorithm is used to generate the fingerprint of each subtype business parameter.
  • the fingerprint algorithm can adopt algorithms such as MD5 and HASH.
  • the global business parameter business fingerprint can be generated by using the fingerprint algorithm of all business subtype parameter fingerprints, or can be directly generated by using the fingerprint configuration information of the AP.
  • the configuration information of the AP is divided into N subtypes according to the service type, and the configuration information of each subtype is identified as APPCFG_1 to APPCFG_N, and each type of configuration information is used to calculate a 128-bit fingerprint by using the MD5 algorithm, respectively, for each service.
  • the sub-type parameter fingerprints are identified as MD5_1 to MD5_N, and the N-128-bit fingerprints are calculated by the MD5 algorithm to obtain a 128-bit global service parameter fingerprint, which is identified as MD5_0.
  • the AP carries MD5_0 and MD5_1 to MD5_N in the configuration request and sends it to the vAC.
  • the vAC uses the locally stored configuration information for the AP to generate a global service parameter fingerprint, which is identified as MD5_0', and each service subtype parameter fingerprint is identified as MD5_1' to MD5_N'. Then, first compare whether the global business parameter fingerprints are consistent, that is, whether MD5_0 and MD5_0' are consistent, if they are consistent, The configuration information of the AP is consistent with the configuration information of the AP stored in the vAC, and the indication information that does not need to be updated is returned to the AP. If they are inconsistent, compare the fingerprints of each service subtype parameter separately, that is, compare MD5_1 with MD5_1', MD5_2 and MD5_2', ..., MD5_N and MD5_N'. You only need to return the configuration information corresponding to the inconsistent service subtype parameter fingerprint to the AP.
  • the configuration parameter fingerprint may not include the global service parameter fingerprint, and only includes the business subtype parameter fingerprint.
  • the vAC compares the fingerprints of the service sub-type parameters and the fingerprints of the service sub-type parameters carried in the configuration request, and then returns the configuration information corresponding to the inconsistent service sub-type parameter fingerprints to the AP. If all of them are consistent, the VAC returns to the AP. There is no need to configure updated instructions.
  • the above configuration request may carry a configuration parameter fingerprint by adding a Vendor Specific Payload.
  • the Vendor Specific Payload format may adopt a format as shown in FIG.
  • the Vendor Identifier field is used to identify the Vendor Specifi Payload, and the Element ID is used to distinguish the sub-attributes in the Vendor Identifier field.
  • the global service parameter fingerprint field is used to carry the global service parameter fingerprint. Carry the fingerprint of each business subtype parameter.
  • the apparatus may include: a first interaction unit 01 and a second interaction unit 02, and may further include a channel establishment unit 03, a maintenance unit 04, a fingerprint processing unit 05, and a parsing unit 06.
  • the functions of each component are as follows:
  • the first interaction unit 01 is responsible for interacting with the AP, including: receiving the configuration request of the AP; and sending the configuration information acquired by the second interaction unit 02 to the AP by using the configuration response.
  • the second interaction unit 02 is responsible for interacting with the network management apparatus, and after the first interaction unit 01 receives the configuration request of the AP, requests and acquires configuration information for the AP from the network management apparatus.
  • the channel establishment unit 03 is responsible for establishing a CAPWAP tunnel between the AC and the AP.
  • the first interaction unit 01 receives the configuration request of the AP through the CAPWAP tunnel, and sends configuration information to the AP.
  • the second interaction unit 02 receives the configuration update information of the network management device for the AP, and the first interaction unit 01 sends the configuration update information to the AP.
  • the AP will report the running information
  • the first interaction unit 01 receives the running information sent by the AP
  • the second interactive unit 02 sends the running information to the network management device.
  • the configuration information for the AP is maintained by the maintenance unit 04, and the configuration information for the AP is saved. After the AC is disconnected from the AP and re-established the connection, if the first interaction unit 01 receives the configuration request of the AP, it refers to The texture processing unit 05 generates a configuration parameter fingerprint by using the configuration information for the AP saved by the maintenance unit 04, and determines whether the generated configuration parameter fingerprint is consistent with the configuration parameter fingerprint carried by the configuration request.
  • the first interaction unit 01 returns the indication information that does not need to be configured to be updated to the AP; if not, the configuration information for the AP saved by the maintenance unit 04 is sent to the AP.
  • the configuration parameter fingerprint may include a fingerprint of each service subtype parameter, and may further include a global service parameter fingerprint.
  • the fingerprint processing unit 05 divides the configuration information of the AP into subtypes according to the service type, and then generates the fingerprints of the subtypes of each service by using the configuration information of each subtype; Whether the fingerprint of each service subtype parameter generated by the AC and the fingerprint of each service subtype parameter carried in the configuration request are consistent.
  • the algorithm used by the fingerprint processing unit 05 in generating the fingerprint may include, but is not limited to, an MD5 or HASH algorithm or the like.
  • the first interaction unit 01 If the comparison result of the fingerprint processing unit 05 is the same, that is, the configuration information for the AP saved by the AP and the AC is consistent, the first interaction unit 01 returns the indication information that does not need to be updated to the AP; if not, the first interaction The unit 01 sends the service subtype configuration information corresponding to the inconsistent service subtype parameter fingerprint to the AP in the configuration information of the AP that is saved by the maintenance unit 04.
  • the fingerprint processing unit 05 may generate the global service parameter fingerprint by using all the service sub-type parameter fingerprints after generating the service sub-type parameter fingerprints by using the foregoing manner. Or directly use the configuration information of the AP to generate a global business parameter fingerprint. Before comparing the fingerprints of the service sub-type parameters generated by the AC and the fingerprints of the service sub-type parameters carried in the configuration request, it is further determined whether the global service parameter fingerprint generated by the AC is consistent with the global service parameter fingerprint carried in the configuration request.
  • the configuration information for the AP saved by the AP and the AC is consistent, and the first interaction unit 01 returns the indication information that does not need to be updated to the AP. If the information is inconsistent, the fingerprints of the service sub-type parameters generated by the AC and the fingerprints of the service sub-type parameters carried in the configuration request are consistent.
  • the configuration parameter fingerprint can be carried in the Vendor Specific Payload of the configuration request. Therefore, the parsing unit 06 can parse the configuration parameter fingerprint from the Vendor Specific Payload of the configuration request, and provide the configuration parameter fingerprint to the AP. Fingerprint processing unit 05.
  • FIG. 5 is a structural diagram of an apparatus installed in a network management apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus may include: a receiving unit 11 and a sending unit 12, and may further include a recording unit 13. Each component The main functions are as follows:
  • the receiving unit 11 is responsible for receiving a configuration request for the AP sent by the AC in the cloud AC cluster.
  • the sending unit 12 is responsible for returning configuration information for the AP to the AC so that the AC sends the configuration information to the AP.
  • the AP can use this configuration information for local configuration.
  • the device has a management interface for the network administrator, and the network administrator can configure the AP through the management interface.
  • the recording unit 13 is responsible for recording the association relationship between the AC and the AP, that is, the AC transmitting the configuration request and the association relationship between the APs to which the configuration request is directed.
  • the sending unit 12 may send the configuration update information for the AP to the AC according to the association relationship, so that the AC sends the configuration update information to the AP.
  • the AP can perform local configuration updates based on the configuration update information.
  • the receiving unit 11 receives the running information of the AP reported by the AC.
  • FIG. 6 is an apparatus for setting an AP according to an embodiment of the present invention. As shown in FIG. 6, the apparatus may include: a fingerprint generating unit 21, a sending unit 22, and a receiving unit 23.
  • the sending unit 22 When the AP is powered on, the sending unit 22 first sends a discovery request message to the LB.
  • the discovery request packet may be sent to the LB according to the pre-configured IP address of the LB, or may be sent to the LB according to the pre-configured domain name directed to the LB.
  • the latter implementation manner is adopted. In this manner, multiple LBs can be configured to share the same domain name.
  • the domain name server performs domain name resolution, the domain name server can return one of the LB address information to the AP according to the load balancing policy.
  • the receiving unit 23 then receives the address information of the AC allocated by the LB for the AP, and the sending unit 22 requests the AC to establish a CAPWAP tunnel according to the address information of the AC. After the tunnel is established, the sending unit 22 may send a configuration request to the AC, and receive configuration information sent by the AC through the receiving unit 23, perform local configuration, and complete online.
  • the fingerprint generating unit 21 may generate the configuration parameter fingerprint by using the configuration information of the AP.
  • the transmitting unit 22 transmits a configuration request including a configuration parameter fingerprint to the AC.
  • the receiving unit 23 receives the indication information that the AC returns without configuration update or the configuration information for the AP.
  • the fingerprint generating unit 21 may divide the configuration information of the AP into subtypes according to the service type, and generate the fingerprints of the service subtype parameters by using the configuration information of each subtype.
  • the configuration request sent by the sending unit 22 may carry only the service subtype parameter fingerprints.
  • the fingerprint generating unit 21 generates a fingerprint of each service subtype parameter.
  • all business subtype parameter fingerprints can be utilized or the global service parameter fingerprint can be generated by directly using the configuration information of the AP.
  • the configuration request sent by the sending unit 22 carries a global service parameter fingerprint and each service subtype parameter fingerprint.
  • the sending unit 22 may carry the configuration parameter fingerprint in the Vendor Specific Payload of the configuration request.
  • the method and apparatus provided by the present invention can have the following advantages:
  • the management function of the AP is performed by the unified network management device. It is not necessary to configure the configuration information of the AP on all the ACs in the cloud AC cluster.
  • the AC associated with the AP can reduce the configuration difficulty and maintenance cost.
  • the AP When the AP and the AC are reconnected, the AP generates a configuration parameter fingerprint containing the fingerprint of each service subtype parameter, and sends the configuration parameter fingerprint to the AC.
  • the AC uses the locally stored AP configuration information to generate the subtype parameters of each service.
  • the configuration parameter of the fingerprint is compared with the fingerprint of the configuration parameter sent by the AP. If the configuration is consistent, the AC does not need to send configuration information to the AP. If the configuration is inconsistent, the configuration information of the inconsistent service subtype parameter fingerprint is sent to the AP.
  • the AP updates the information, which reduces the amount of information sent to the AP and saves network traffic.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

Abstract

本发明提供了一种对接入点(AP)进行配置的方法、装置和系统，其中方法包括：云端接入控制器(AC)接收到AP的配置请求后，向网络管理装置请求并获取针对所述AP的配置信息；将获取的所述配置信息通过配置响应发送给所述AP。在本发明中，对AP的管理功能由统一的网络管理装置完成，无需在云端AC集群中所有AC上都配置AP的配置信息，仅需要在网络管理装置统一配置AP的配置信息然后下发给AP关联的AC即可，降低了配置难度和维护成本。

Description

一种对AP进行配置的方法、装置和系统
本申请要求2015年05月15日递交的申请号为201510250925.6、发明名称为“一种对AP进行配置的方法、装置和系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及网络通信技术领域，特别涉及一种对AP进行配置的方法、装置和系统。
背景技术
WLAN(虚拟局域网，Wireless Local Area Networks)主要由AC(Access Controller，无线控制器)和AP(Access Point，无线接入点)组成，其中AC负责管理和控制AP，AP提供无线客户端到局域网的桥接功能。
在WLAN网络逐渐成为独立网络的今天，云AC是未来AC的发展趋势，所谓云AC就是将AC管理和控制的功能放到云端，即在云端部署一个AC集群，该AC集群中的各AC可以体现为虚拟AC(vAC)。各AP可以共享该AC集群。这种架构具有低成本、易管理、虚拟化、可伸缩网络架构等特点，在无线网络改造和扩容时都非常方便，可以有效地降低IT成本和网络复杂性。
由于各AP共享云端的AC集群，即AP连接哪个AC是不确定的，因此需要在所有AC上都进行AP配置并保存AP的配置信息。这种方式配置麻烦，成本高且容易出现一致性问题，尤其是在修改AP配置的时候。
发明内容
有鉴于此，本发明提供了一种对AP进行配置的方法、装置和系统，以便于在云AC环境下降低配置难度和维护成本。
具体技术方案如下：
本发明提供了一种对接入点AP进行配置的方法，该方法包括：
云端接入控制器AC集群中的AC接收到AP的配置请求后，向网络管理装置请求并获取针对所述AP的配置信息；
将获取的所述配置信息通过配置响应发送给所述AP。
根据本发明一可选实施方式，所述AC是负载分担器LB接收到所述AP的发现请求 报文后，从所述云端AC集群中为所述AP分配的。
根据本发明一可选实施方式，该方法还包括：所述AC与所述AP建立无线接入点的控制和配置协议CAPWAP隧道；
所述AC通过所述CAPWAP隧道接收所述AP的配置请求。
根据本发明一可选实施方式，该方法还包括：
所述AC接收到来自网络管理装置针对所述AP的配置更新信息后，将所述配置更新信息发送给所述AP。
根据本发明一可选实施方式，该方法还包括：
所述AC接收所述AP发送的运行信息，将所述运行信息发送给网络管理装置。
根据本发明一可选实施方式，所述AC保存针对所述AP的配置信息；
所述AC与所述AP连接断开并重新建立连接后，如果接收到AP的配置请求，则利用所述AC本地保存的针对所述AP的配置信息生成配置参数指纹，判断生成的配置参数指纹与所述配置请求携带的配置参数指纹是否一致，如果一致，则返回无需配置更新的指示信息给所述AP；如果不一致，则将本地保存的针对所述AP的配置信息发送给所述AP。
根据本发明一可选实施方式，所述配置参数指纹包括各业务子类型参数指纹，所述各业务子类型参数指纹是将所述AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成的；
所述判断生成的配置参数指纹与所述配置请求携带的配置参数指纹是否一致包括：分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致；
如果不一致，则将本地保存的针对所述AP的配置信息中，不一致的业务子类型参数指纹对应的业务子类型配置信息发送给所述AP。
根据本发明一可选实施方式，所述配置参数指纹还包括全局业务参数指纹，所述全局业务参数指纹是利用所有业务子类型参数指纹生成的，或者直接利用所述AP的配置信息生成的；
在分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致之前，还包括：
判断所述AC生成的全局业务参数指纹与所述配置请求携带的全局业务参数指纹是否一致，如果一致，则执行所述返回无需配置更新的指示信息给所述AP；如果不一致， 则继续执行所述分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致的步骤。
根据本发明一可选实施方式，该方法还包括：
所述AC从所述配置请求的供应商特定载荷Vendor Specific Payload中解析得到配置参数指纹。
本发明还提供了一种对接入点AP进行配置的方法，该方法包括：
网络管理装置接收到云端AC集群中AC发送的针对AP的配置请求；
将针对所述AP的配置信息返回给所述AC，以便所述AC将所述配置信息发送给所述AP。
根据本发明一可选实施方式，该方法还包括：
所述网络管理装置记录所述AC与所述AP的关联关系；
依据所述关联关系，将针对所述AP的配置更新信息发送给所述AC，以便所述AC将所述配置更新信息发送给所述AP。
根据本发明一可选实施方式，该方法还包括：
所述网络管理装置接收所述AC上报的所述AP的运行信息。
本发明还提供了一种对接入点AP进行配置的方法，该方法包括：
AP与云端AC集群中的AC连接断开并重新建立连接后，利用所述AP的配置信息生成配置参数指纹，并向所述AC发送包含所述配置参数指纹的配置请求；
接收所述AC返回的无需配置更新的指示信息或针对所述AP的配置信息。
根据本发明一可选实施方式，利用所述AP的配置信息生成配置参数指纹包括：
将所述AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成各业务子类型参数指纹。
根据本发明一可选实施方式，利用所述AP的配置信息生成配置参数指纹还包括：
利用所有业务子类型参数指纹或者直接利用所述AP的配置信息生成全局业务参数指纹。
根据本发明一可选实施方式，所述配置参数指纹携带在配置请求的Vendor Specific Payload中。
本发明还提供了一种对AP进行配置的装置，该装置设置于云端AC集群中的AC，该装置包括：第一交互单元和第二交互单元；
所述第一交互单元，用于接收AP的配置请求；将所述第二交互单元获取的配置信 息通过配置响应发送给所述AP；
所述第二交互单元，用于在所述第一交互单元接收到AP的配置请求后，向网络管理装置请求并获取针对所述AP的配置信息。
根据本发明一可选实施方式，所述AC是LB接收到所述AP的发现请求报文后，从所述云端AC集群中为所述AP分配的。
根据本发明一可选实施方式，通道建立单元，用于建立所述AC与所述AP之间的CAPWAP隧道；
所述第一交互单元通过所述CAPWAP隧道接收所述AP的配置请求。
根据本发明一可选实施方式，所述第二交互单元，还用于接收网络管理装置针对所述AP的配置更新信息；
所述第一交互单元，还用于将所述配置更新信息发送给所述AP。
根据本发明一可选实施方式，所述第一交互单元，还用于接收所述AP发送的运行信息；
所述第二交互单元，还用于将所述运行信息发送给网络管理装置。
根据本发明一可选实施方式，该装置还包括：
维护单元，用于保存针对所述AP的配置信息；
指纹处理单元，用于在所述AC与所述AP连接断开并重新建立连接后，如果所述第一交互单元接收到AP的配置请求，则利用所述维护单元保存的针对所述AP的配置信息生成配置参数指纹，判断生成的配置参数指纹与所述配置请求携带的配置参数指纹是否一致；
所述第一交互单元，还用于如果所述指纹处理单元的判断结果为一致，则返回无需配置更新的指示信息给所述AP；如果不一致，则将所述维护单元保存的针对所述AP的配置信息发送给所述AP。
根据本发明一可选实施方式，所述配置参数指纹包括各业务子类型参数指纹；
所述指纹处理单元，具体用于将所述AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成各业务子类型参数指纹；分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致；
所述第一交互单元，还用于如果所述指纹处理单元的比较结果为一致，则返回无需配置更新的指示信息给所述AP；如果不一致，则将所述维护单元保存的针对所述AP的配置信息中，不一致的业务子类型参数指纹对应的业务子类型配置信息发送给所述AP。
根据本发明一可选实施方式，所述配置参数指纹还包括全局业务参数指纹；
所述指纹处理单元，还用于利用所有业务子类型参数指纹生成所述全局业务参数指纹，或者直接利用所述AP的配置信息生成所述全局业务参数指纹；在分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致之前，还用于判断所述AC生成的全局业务参数指纹与所述配置请求携带的全局业务参数指纹是否一致；
所述第一交互单元，还用于如果所述指纹处理单元的判断结果为一致，则执行所述返回无需配置更新的指示信息给所述AP；如果不一致，则继续执行所述分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致。
根据本发明一可选实施方式，该装置还包括：
解析单元，用于从所述配置请求的Vendor Specific Payload中解析得到配置参数指纹，并将所述配置参数指纹提供给所述指纹处理单元。
本发明还提供了一种对AP进行配置的装置，该装置设置于网络管理装置，该装置包括：
接收单元，用于接收云端AC集群中AC发送的针对AP的配置请求；
发送单元，用于将针对所述AP的配置信息返回给所述AC，以便所述AC将所述配置信息发送给所述AP。
根据本发明一可选实施方式，该装置还包括：
记录单元，用于记录所述AC与所述AP的关联关系；
所述发送单元，还用于依据所述关联关系，将针对所述AP的配置更新信息发送给所述AC，以便所述AC将所述配置更新信息发送给所述AP。
根据本发明一可选实施方式，所述接收单元，还用于接收所述AC上报的所述AP的运行信息。
本发明还提供了一种对AP进行配置的装置，该装置设置于AP，该装置包括：
指纹生成单元，用于在所述AP与云端AC集群中的AC连接断开并重新建立连接后，利用所述AP的配置信息生成配置参数指纹；
发送单元，用于向所述AC发送包含所述配置参数指纹的配置请求；
接收单元，用于接收所述AC返回的无需配置更新的指示信息或针对所述AP的配置信息。
根据本发明一可选实施方式，所述指纹生成单元，具体用于将所述AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成各业务子类型参数指纹。
根据本发明一可选实施方式，所述指纹生成单元，还用于利用所有业务子类型参数指纹或者直接利用所述AP的配置信息生成全局业务参数指纹。
根据本发明一可选实施方式，所述发送单元将所述配置参数指纹携带在配置请求的Vendor Specific Payload中。
本发明还提供了一种对AP进行配置的系统，该系统包括：网络管理装置、云端AC集群和AP。
由以上技术方案可以看出，在本发明中，对AP的管理功能由统一的网络管理装置完成，AC接收到AP的配置请求后，向网络管理装置请求并获取针对AP的配置信息，并返回给AP。这种方式使得无需在云端AC集群中所有AC上都配置AP的配置信息，仅需要在网络管理装置统一配置AP的配置信息然后下发给AP关联的AC即可，降低了配置难度和维护成本。
附图说明
图1为本发明所基于的系统架构图；
图2为本发明实施例提供的方法流程图；
图3为本发明实施例提供的供应商特定载荷的格式示意图；
图4为本发明实施例提供的设置于AC中的装置结构图；
图5为本发明实施例提供的设置于网络管理装置的装置结构图；
图6为本发明实施例提供的设置于AP的装置。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面结合附图和具体实施例对本发明进行详细描述。
本发明的核心思想在于，将AC集群中AC对AP的管理功能抽离，仅保留AC对AP的控制功能，将AC对AP的管理功能统一到网络管理装置，从而保证对AP的配置全局统一。
图1为本发明所基于的系统架构图，如图1中所示，该系统主要包括：云端AC集群、网络管理装置、LB(负载均衡器)和AP。其中，网络管理装置、LB和云端AC集 群均设置于云端，网络管理装置、LB和云端AC集群可以位于同一服务器，也可以分别位于不同的服务器，云端AC集群中的各AC同样可以位于同一服务器，也可以分别位于不同的服务器，甚至可以位于不同的区域，例如有的AC位于北京、有的AC位于上海等等。作为一种优选的实施方式，云端AC集群和LB可以部署于公有云(公有云通常指服务提供商基于公有网络为用户提供的云端环境)的虚拟机上，此时云端AC集群中的各AC以虚拟AC(vAC)的形式存在，后续实施例中均以vAC为例进行描述。另外，为了提高LB设备的可靠性，LB也可以以集群的形式存在，并且在LB集群内部也可以实现负载均衡。
本发明实施例中所涉及的“云端”指的是采用应用程序虚拟化技术的软件平台，通过该平台，各类常用软件都能够在独立的虚拟化环境中被封装起来。云端AC集群就是在该虚拟化环境中的AC软件集群，该集群中的各AC以虚拟化软件形式存在。
网络管理装置包括以下功能：
1)负责管理所有AP的配置。一方面提供面向网络管理者的管理接口，通过该管理接口获得网络管理者对AP的配置信息，另一方面提供面向云端AC集群中各vAC的接口。
2)接收vAC发送的针对AP的配置请求时，将针对该AP的配置信息返回给该vAC。
3)收集vAC上报的AP的运行信息。
4)记录vAC与AP之间的关联关系，依据该关联关系，将针对AP的配置更新信息发送给与该AP关联的vAC。
vAC主要包括以下功能：
1)与AP建立连接，即与AP建立CAPWAP(无线接入点的控制和配置协议)隧道。
2)接收到AP的配置请求后，向网络管理装置请求并获取针对该AP的配置信息，并通过配置响应将该配置信息发送给该AP。
3)收集AP上的运行信息并上报到网络管理平台。
4)将来自网络管理装置针对AP的配置更新信息，发送给该AP。
5)保存针对AP的配置信息。
6)与AP的连接断开并重新建立连接后，如果接收到AP的配置请求，则利用vAC本地保存的针对该AP的配置请求，则利用本地保存的针对该AP的配置信息生成配置参数指纹，判断生成的配置参数指纹与配置请求携带的配置参数指纹是否一致，如果一致，则返回无需配置更新的指示信息给AP；如果不一致，则将本地保存的针对该AP的配置 信息发送给该AP。
LB主要包括以下功能：
1)定时获取AC集群中各vAC的相关信息，例如负载信息、版本信息等。该LB可以从网络管理平台获取AC集群中各vAC的相关信息。
2)接收AP发送的发现请求报文，从云端AC集群中为发送发现请求报文的AP分配vAC。LB可以依据负载均衡原则为AP分配AC，还可以进一步结合其他因素，诸如AP是否连接过该vAC且连接失败、AP与vAC的距离、AP与vAC的软件版本、AP与vAC是否属于同一运营商，等等。
3)将分配的AC的地址信息返回给AP。
AP主要包括以下功能：
1)向LB发送发现请求报文。
2)接收LB为AP分配的vAC地址信息，依据该地址信息，向vAC请求建立连接，即协商建立CAPWAP隧道。
3)与vAC建立连接后向vAC发送配置请求。
4)接收vAC发送的配置信息或配置更新信息，进行本地配置。
5)向vAC上报运行信息，该运行信息可以定时向vAC上报。
6)与vAC连接断开并重新建立连接后，利用本身的配置信息生成配置参数指纹，将配置参数指纹携带在配置请求中发送给vAC。
图2为本发明实施例提供的方法流程图，如图2中所示，该方法可以包括以下步骤：
AP上电启动后，在201中，向LB发送发现请求报文。
在本发明实施例中，可以在AP上预先配置LB的地址信息，AP依据该地址信息向LB发送发现请求报文。
除了该方式之外，还存在一种优选的方式，即在AP上预先配置指向LB的域名，对该域名进行解析得到LB的地址信息，向LB发送发现请求报文。这种方式可以解决LB的单点问题，即该域名可以指向LB集群，解析得到的LB的地址信息可以是该LB集群中任意一个工作正常的LB，也可以是该LB集群中负载较小的LB(即可以在LB集群中实现负载分担，该负载分担在域名解析服务器上实现控制)，也可以是该LB集群中距离AP最近的LB，等等。
在202中，LB依据负载分担原则，从云端AC集群中为AP分配vAC。
可以定时获取云端AC集群中各vAC的相关信息，主要包括负载信息，还可以包括 版本信息等。LB在获取vAC的相关信息时，各vAC可以定时上报自身的相关信息给网络管理装置，网络管理装置负责对网络中的各设备进行管理，LB定时从网络管理装置获取各vAC的相关信息，这种架构无需LB与各vAC之间直接进行连接，方便管理和维护。当然，也可以LB直接从各vAC获取相关信息。
本步骤中可以依据负载均衡原则，优选当前负载小的vAC分配给AP。其中上述负载信息可以包括但不限于：CPU利用率、内存利用率、带宽利用率以及AP的上线率中的一种或任意组合。AP的上线率指的是该vAC中当前连接的AP数量与该vAC可容纳的AP数量的比值。除了依据负载均衡原则之外，还可以结合其他原则，例如：优先为AP分配距离AP最近的vAC；优先为AP分配软件版本一致的vAC；优先为AP分配属于同一网络运营商的vAC。
在203中，LB将分配的vAC的地址信息携带在发现响应报文中返回给AP。
AP从发现响应报文中解析出vAC的地址信息，在204中，依据该地址信息与vAC建立连接，即建立CAPWAP隧道。AP与vAC建立CAPWAP隧道的过程不做详述。
在205中，AP向vAC发送配置请求。
在206中，vAC向网络管理装置发送配置请求。在本发明中vAC中仅具备对AP的控制功能，即AP与vAC间CAPWAP隧道的控制，而将管理功能脱离，管理功能由网络管理装置完成，诸如配置AP、管理无线终端等。
在207中，网络管理装置将针对该AP的配置信息通过配置响应返回给vAC。
网络管理装置面向网络管理者提供有管理接口，网络管理者通过该管理接口对AP进行配置，即网络管理装置通过该管理接口获取针对AP的配置信息并在本地进行存储和维护。当接收到vAC针对某AP的配置请求时，将针对该AP的配置信息返回给vAC。
这种方式使得所有AP的配置信息统一在网络管理装置上配置和维护，并仅需要下发给AP接入的vAC即可，而无需在所有vAC上都配置和维护AP的配置信息。显然一方面能够降低复杂程度和维护成本，另一方面也能够有效地保证全局统一。
在208中，vAC将针对AP的配置信息下发给该AP，AP利用该配置信息进行本地配置，上线成功。
另外，在网络管理装置中会维护vAC与AP之间的关联关系，如果网络管理员更新对AP的配置，则依据该关联关系就可以获知该AP关联的vAC，将配置更新信息发送给关联的vAC，由该vAC将配置更新信息下发给AP，AP利用配置更新信息，更新本地配置。
在209中，AP在运行过程中上报运行信息给关联的vAC。
在AP与vAC之间建立CAPWAP隧道之后，上述AP与vAC之间的交互都通过该CAPWAP隧道进行。
在210中，vAC将AP的运行信息上报给网络管理装置，这样网络管理者通过管理接口就能够掌握各AP的运行信息。
如果AP与vAC之间的CAPWAP隧道断开后又重新建立，则在211中，向vAC发送配置请求。由于vAC需要知道AP配置和本地配置是否一致，如果将所有配置信息都上报给vAC进行比较，会使得配置请求的数据量非常大，针对此本发明实施例提供了一种优选地实施方式，即在AP向vAC发送的配置请求中携带配置参数指纹。
在212中，vAC比较配置请求携带的配置参数指纹与利用本地保存的针对该AP的配置信息生成的配置参数指纹是否一致，如果一致，则执行213，向AP返回无需配置更新的指示信息。如果不一致，则执行214，将本地保存的针对该AP的配置信息返回给AP。
上述配置参数指纹可以包括全局业务参数指纹和各业务子类型参数指纹。vAC和AP在生成全局业务参数指纹和各业务子类型参数指纹时采用的方式一致。
具体地，各业务子类型参数指纹的生成过程可以包括：
首先将AP的配置信息按照业务类型分成子类型。例如将AP的配置信息分成诸如射频参数、无线服务参数、公网连接方式、安全配置参数等子类型。
然后分解利用各子类型的配置信息采用指纹算法生成各子类型业务参数指纹。其中指纹算法可以采用诸如MD5、HASH等算法。
全局业务参数业务指纹可以利用所有业务子类型参数指纹采用指纹算法生成，也可以直接利用AP的配置信息采用指纹算法生成。
举个例子，将AP的配置信息按照业务类型分为N个子类型，各子类型的配置信息标识为APPCFG_1至APPCFG_N，将每类配置信息分别用MD5算法计算出128位的指纹，分别为各业务子类型参数指纹，标识为MD5_1至MD5_N，再用MD5算法对这N个128位的指纹进行计算，得到128位的全局业务参数指纹，标识为MD5_0。AP将MD5_0以及MD5_1至MD5_N携带在配置请求中发送给vAC。
vAC采用相同的方式，利用本地存储的针对该AP的配置信息生成全局业务参数指纹，标识为MD5_0’，各业务子类型参数指纹，标识为MD5_1’至MD5_N’。然后，先比较全局业务参数指纹是否一致，即比较MD5_0与MD5_0’是否一致，如果一致， 则说明AP的配置信息与vAC存储的该AP的配置信息一致，向AP返回无需配置更新的指示信息。如果不一致，则再分别比较各业务子类型参数指纹，即分别将MD5_1与MD5_1’比较，MD5_2与MD5_2’比较，…，MD5_N与MD5_N’比较。仅需要将不一致的业务子类型参数指纹对应的配置信息返回给AP即可。
除了上述方式之外，配置参数指纹也可以不包括全局业务参数指纹，仅包括各业务子类型参数指纹。vAC逐一比较生成的各业务子类型参数指纹与配置请求携带的各业务子类型参数指纹，然后将不一致的业务子类型参数指纹对应的配置信息返回给AP即可，如果全都一致，则向AP返回无需配置更新的指示信息。
上述配置请求可以通过增加Vendor Specific Payload(供应商特定载荷)来携带配置参数指纹，举个例子，Vendor Specific Payload的格式可以采用如图3中所示的格式。其中的Vendor Identifier(供应商标识)字段用于标识Vendor Specifi Payload，Element ID(元素标识)用于区分Vendor Identifier字段中的子属性，全局业务参数指纹字段用于携带全局业务参数指纹，其他字段分别携带各业务子类型参数指纹。
图4为本发明实施例提供的设置于AC中的装置结构图，用于完成上述方法实施例中vAC的功能，该AC是LB接收到AP的发现请求报文后，从云端AC集群中为AP分配的。如图4中所示，该装置可以包括：第一交互单元01和第二交互单元02，还可以包括通道建立单元03、维护单元04、指纹处理单元05和解析单元06。各组成单元的功能如下：
第一交互单元01负责与AP进行交互，包括：接收AP的配置请求；将第二交互单元02获取的配置信息通过配置响应发送给AP。
第二交互单元02负责与网络管理装置进行交互，包括：在第一交互单元01接收到AP的配置请求后，向网络管理装置请求并获取针对AP的配置信息。
通道建立单元03负责建立AC与AP之间的CAPWAP隧道，第一交互单元01通过CAPWAP隧道接收AP的配置请求，并向AP下发配置信息。
如果网络管理装置对AP进行配置更新，则上述第二交互单元02接收网络管理装置针对AP的配置更新信息，由第一交互单元01将配置更新信息发送给AP。
AP会将运行信息进行上报，上述第一交互单元01接收AP发送的运行信息，由第二交互单元02将运行信息发送给网络管理装置。
对于针对AP的配置信息由维护单元04负责维护，保存针对AP的配置信息。在AC与AP连接断开并重新建立连接后，如果第一交互单元01接收到AP的配置请求，则指 纹处理单元05利用维护单元04保存的针对AP的配置信息生成配置参数指纹，判断生成的配置参数指纹与配置请求携带的配置参数指纹是否一致。
如果指纹处理单元05的判断结果为一致，则第一交互单元01返回无需配置更新的指示信息给AP；如果不一致，则将维护单元04保存的针对AP的配置信息发送给AP。
其中，上述的配置参数指纹可以包括各业务子类型参数指纹，还可以进一步包括全局业务参数指纹。
对于配置参数指纹仅包括各业务子类型参数指纹的情况，指纹处理单元05将AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成各业务子类型参数指纹；分别比较AC生成的各业务子类型参数指纹和配置请求携带的各业务子类型参数指纹是否一致。指纹处理单元05在生成指纹时采用的算法可以包括但不限于：MD5或HASH算法等。
如果指纹处理单元05的比较结果为一致，即AP端和AC端保存的针对该AP的配置信息一致，则第一交互单元01返回无需配置更新的指示信息给AP；如果不一致，则第一交互单元01将维护单元04保存的针对AP的配置信息中，不一致的业务子类型参数指纹对应的业务子类型配置信息发送给AP。
对于配置参数指纹包括各业务子类型参数指纹和全局业务参数指纹的情况，指纹处理单元05在利用上述的方式生成各业务子类型参数指纹后，可以利用所有业务子类型参数指纹生成全局业务参数指纹，或者直接利用AP的配置信息生成全局业务参数指纹。在分别比较AC生成的各业务子类型参数指纹和配置请求携带的各业务子类型参数指纹是否一致之前，进一步判断AC生成的全局业务参数指纹与配置请求携带的全局业务参数指纹是否一致。
如果指纹处理单元05的判断结果为一致，则说明AP端和AC端保存的针对该AP的配置信息一致，第一交互单元01返回无需配置更新的指示信息给AP。如果不一致，则继续执行分别比较AC生成的各业务子类型参数指纹和配置请求携带的各业务子类型参数指纹是否一致。
由于AP在发送配置参数指纹时，可以将配置参数指纹携带在配置请求的Vendor Specific Payload中，因此解析单元06可以从配置请求的Vendor Specific Payload中解析得到配置参数指纹，并将配置参数指纹提供给指纹处理单元05。
图5为本发明实施例提供的设置于网络管理装置的装置结构图，如图5中所示，该装置可以包括：接收单元11和发送单元12，还可以包括记录单元13。其中各组成单元 的主要功能如下：
接收单元11负责接收云端AC集群中AC发送的针对AP的配置请求。
发送单元12负责将针对AP的配置信息返回给AC，以便AC将配置信息发送给AP。AP就能够利用该配置信息进行本地配置。
另外，该装置具有面向网络管理者的管理接口，网络管理者可以通过该管理接口对AP进行配置。记录单元13负责记录AC与AP的关联关系，即发送配置请求的AC以及该配置请求所针对的AP之间的关联关系。当网络管理者通过上述管理接口对AP的配置信息进行更新后，发送单元12可以依据上述关联关系，将针对AP的配置更新信息发送给AC，以便AC将配置更新信息发送给AP。AP就能够根据该配置更新信息进行本地的配置更新。
由于AP在运行过程中会将运行信息发送给AC，由AC上报给网络管理装置，因此接收单元11会接收到AC上报的AP的运行信息。
图6为本发明实施例提供的设置于AP的装置，如图6中所示，该装置可以包括：指纹生成单元21、发送单元22和接收单元23。
当AP上电启动时，发送单元22会首先向LB发送发现请求报文。可以依据预先配置的LB的IP地址，向LB发送发现请求报文，也可以依据预先配置的指向LB的域名，向LB发送发现请求报文。优选后一种实现方式，这种方式可以配置多个LB共享同一个域名，域名服务器进行域名解析时，可以依据负载均衡策略，向AP返回其中一个LB的地址信息。
然后接收单元23接收LB为该AP分配的AC的地址信息，发送单元22依据该AC的地址信息，向AC请求建立CAPWAP隧道。当隧道建立后，发送单元22可以向AC发送配置请求，并通过接收单元23接收AC发送的配置信息，进行本地配置，完成上线。
在AP与云端AC集群中的AC连接断开并重新建立连接后，指纹生成单元21可以利用AP的配置信息生成配置参数指纹。
发送单元22向AC发送包含配置参数指纹的配置请求。
接收单元23接收AC返回的无需配置更新的指示信息或针对AP的配置信息。
具体地，指纹生成单元21可以将AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成各业务子类型参数指纹。发送单元22发送的配置请求中可以仅携带各业务子类型参数指纹。
还存在另外一种实现方式，即指纹生成单元21除了生成各业务子类型参数指纹之 外，还可以利用所有业务子类型参数指纹或者直接利用AP的配置信息生成全局业务参数指纹。发送单元22发送的配置请求中携带全局业务参数指纹和各业务子类型参数指纹。
发送单元22在发送配置参数指纹时，可以将配置参数指纹携带在配置请求的Vendor Specific Payload中。
由以上描述可以看出，本发明提供的方法和装置可以具备以下优点：
1)本发明中，对AP的管理功能由统一的网络管理装置完成，无需在云端AC集群中所有AC上都配置AP的配置信息，仅需要在网络管理装置统一配置AP的配置信息然后下发给AP关联的AC即可，降低了配置难度和维护成本。
2)AP与AC在断开后重连时，生成包含各业务子类型参数指纹的配置参数指纹，将配置参数指纹发送给AC，AC利用本地存储的AP的配置信息生成包含各业务子类型参数指纹的配置参数指纹，并与AP发送的配置参数指纹进行比对，如果一致，AC无需下发配置信息给AP；如果不一致，仅需要将不一致的业务子类型参数指纹对应的配置信息下发给AP进行更新，减少了下发给AP的信息量，节约了网络流量。
在本发明所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。

Claims (33)

  1. 一种对接入点AP进行配置的方法，其特征在于，该方法包括：
    云端接入控制器AC集群中的AC接收到AP的配置请求后，向网络管理装置请求并获取针对所述AP的配置信息；
    将获取的所述配置信息通过配置响应发送给所述AP。
  2. 根据权利要求1所述的方法，其特征在于，所述AC是负载分担器LB接收到所述AP的发现请求报文后，从所述云端AC集群中为所述AP分配的。
  3. 根据权利要求1或2所述的方法，其特征在于，该方法还包括：所述AC与所述AP建立无线接入点的控制和配置协议CAPWAP隧道；
    所述AC通过所述CAPWAP隧道接收所述AP的配置请求。
  4. 根据权利要求1所述的方法，其特征在于，该方法还包括：
    所述AC接收到来自网络管理装置针对所述AP的配置更新信息后，将所述配置更新信息发送给所述AP。
  5. 根据权利要求1所述的方法，其特征在于，该方法还包括：
    所述AC接收所述AP发送的运行信息，将所述运行信息发送给网络管理装置。
  6. 根据权利要求1所述的方法，其特征在于，所述AC保存针对所述AP的配置信息；
    所述AC与所述AP连接断开并重新建立连接后，如果接收到AP的配置请求，则利用所述AC本地保存的针对所述AP的配置信息生成配置参数指纹，判断生成的配置参数指纹与所述配置请求携带的配置参数指纹是否一致，如果一致，则返回无需配置更新的指示信息给所述AP；如果不一致，则将本地保存的针对所述AP的配置信息发送给所述AP。
  7. 根据权利要求6所述的方法，其特征在于，所述配置参数指纹包括各业务子类型参数指纹，所述各业务子类型参数指纹是将所述AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成的；
    所述判断生成的配置参数指纹与所述配置请求携带的配置参数指纹是否一致包括：分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致；
    如果不一致，则将本地保存的针对所述AP的配置信息中，不一致的业务子类型参数指纹对应的业务子类型配置信息发送给所述AP。
  8. 根据权利要求7所述的方法，其特征在于，所述配置参数指纹还包括全局业务参数指纹，所述全局业务参数指纹是利用所有业务子类型参数指纹生成的，或者直接利用所述AP的配置信息生成的；
    在分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致之前，还包括：
    判断所述AC生成的全局业务参数指纹与所述配置请求携带的全局业务参数指纹是否一致，如果一致，则执行所述返回无需配置更新的指示信息给所述AP；如果不一致，则继续执行所述分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致的步骤。
  9. 根据权利要求6、7或8所述的方法，其特征在于，该方法还包括：
    所述AC从所述配置请求的供应商特定载荷Vendor Specific Payload中解析得到配置参数指纹。
  10. 一种对接入点AP进行配置的方法，其特征在于，该方法包括：
    网络管理装置接收到云端AC集群中AC发送的针对AP的配置请求；
    将针对所述AP的配置信息返回给所述AC，以便所述AC将所述配置信息发送给所述AP。
  11. 根据权利要求10所述的方法，其特征在于，该方法还包括：
    所述网络管理装置记录所述AC与所述AP的关联关系；
    依据所述关联关系，将针对所述AP的配置更新信息发送给所述AC，以便所述AC将所述配置更新信息发送给所述AP。
  12. 根据权利要求10或11所述的方法，其特征在于，该方法还包括：
    所述网络管理装置接收所述AC上报的所述AP的运行信息。
  13. 一种对接入点AP进行配置的方法，其特征在于，该方法包括：
    AP与云端AC集群中的AC连接断开并重新建立连接后，利用所述AP的配置信息生成配置参数指纹，并向所述AC发送包含所述配置参数指纹的配置请求；
    接收所述AC返回的无需配置更新的指示信息或针对所述AP的配置信息。
  14. 根据权利要求13所述的方法，其特征在于，利用所述AP的配置信息生成配置参数指纹包括：
    将所述AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成各业务子类型参数指纹。
  15. 根据权利要求14所述的方法，其特征在于，利用所述AP的配置信息生成配置参数指纹还包括：
    利用所有业务子类型参数指纹或者直接利用所述AP的配置信息生成全局业务参数指纹。
  16. 根据权利要求13、14或15所述的方法，其特征在于，所述配置参数指纹携带在配置请求的Vendor Specific Payload中。
  17. 一种对AP进行配置的装置，该装置设置于云端AC集群中的AC，其特征在于，该装置包括：第一交互单元和第二交互单元；
    所述第一交互单元，用于接收AP的配置请求；将所述第二交互单元获取的配置信息通过配置响应发送给所述AP；
    所述第二交互单元，用于在所述第一交互单元接收到AP的配置请求后，向网络管理装置请求并获取针对所述AP的配置信息。
  18. 根据权利要求17所述的装置，其特征在于，所述AC是LB接收到所述AP的发现请求报文后，从所述云端AC集群中为所述AP分配的。
  19. 根据权利要求17所述的装置，其特征在于，通道建立单元，用于建立所述AC与所述AP之间的CAPWAP隧道；
    所述第一交互单元通过所述CAPWAP隧道接收所述AP的配置请求。
  20. 根据权利要求17所述的装置，其特征在于，所述第二交互单元，还用于接收网络管理装置针对所述AP的配置更新信息；
    所述第一交互单元，还用于将所述配置更新信息发送给所述AP。
  21. 根据权利要求17所述的装置，其特征在于，所述第一交互单元，还用于接收所述AP发送的运行信息；
    所述第二交互单元，还用于将所述运行信息发送给网络管理装置。
  22. 根据权利要求17所述的装置，其特征在于，该装置还包括：
    维护单元，用于保存针对所述AP的配置信息；
    指纹处理单元，用于在所述AC与所述AP连接断开并重新建立连接后，如果所述第一交互单元接收到AP的配置请求，则利用所述维护单元保存的针对所述AP的配置信息生成配置参数指纹，判断生成的配置参数指纹与所述配置请求携带的配置参数指纹是否一致；
    所述第一交互单元，还用于如果所述指纹处理单元的判断结果为一致，则返回无需 配置更新的指示信息给所述AP；如果不一致，则将所述维护单元保存的针对所述AP的配置信息发送给所述AP。
  23. 根据权利要求22所述的装置，其特征在于，所述配置参数指纹包括各业务子类型参数指纹；
    所述指纹处理单元，具体用于将所述AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成各业务子类型参数指纹；分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致；
    所述第一交互单元，还用于如果所述指纹处理单元的比较结果为一致，则返回无需配置更新的指示信息给所述AP；如果不一致，则将所述维护单元保存的针对所述AP的配置信息中，不一致的业务子类型参数指纹对应的业务子类型配置信息发送给所述AP。
  24. 根据权利要求23所述的装置，其特征在于，所述配置参数指纹还包括全局业务参数指纹；
    所述指纹处理单元，还用于利用所有业务子类型参数指纹生成所述全局业务参数指纹，或者直接利用所述AP的配置信息生成所述全局业务参数指纹；在分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致之前，还用于判断所述AC生成的全局业务参数指纹与所述配置请求携带的全局业务参数指纹是否一致；
    所述第一交互单元，还用于如果所述指纹处理单元的判断结果为一致，则执行所述返回无需配置更新的指示信息给所述AP；如果不一致，则继续执行所述分别比较所述AC生成的各业务子类型参数指纹和所述配置请求携带的各业务子类型参数指纹是否一致。
  25. 根据权利要求22、23或24所述的装置，其特征在于，该装置还包括：
    解析单元，用于从所述配置请求的Vendor Specific Payload中解析得到配置参数指纹，并将所述配置参数指纹提供给所述指纹处理单元。
  26. 一种对AP进行配置的装置，该装置设置于网络管理装置，其特征在于，该装置包括：
    接收单元，用于接收云端AC集群中AC发送的针对AP的配置请求；
    发送单元，用于将针对所述AP的配置信息返回给所述AC，以便所述AC将所述配置信息发送给所述AP。
  27. 根据权利要求26所述的装置，其特征在于，该装置还包括：
    记录单元，用于记录所述AC与所述AP的关联关系；
    所述发送单元，还用于依据所述关联关系，将针对所述AP的配置更新信息发送给所述AC，以便所述AC将所述配置更新信息发送给所述AP。
  28. 根据权利要求26或27所述的装置，其特征在于，所述接收单元，还用于接收所述AC上报的所述AP的运行信息。
  29. 一种对AP进行配置的装置，该装置设置于AP，其特征在于，该装置包括：
    指纹生成单元，用于在所述AP与云端AC集群中的AC连接断开并重新建立连接后，利用所述AP的配置信息生成配置参数指纹；
    发送单元，用于向所述AC发送包含所述配置参数指纹的配置请求；
    接收单元，用于接收所述AC返回的无需配置更新的指示信息或针对所述AP的配置信息。
  30. 根据权利要求29所述的装置，其特征在于，所述指纹生成单元，具体用于将所述AP的配置信息按业务类型分成子类型后，分别利用各子类型的配置信息生成各业务子类型参数指纹。
  31. 根据权利要求30所述的装置，其特征在于，所述指纹生成单元，还用于利用所有业务子类型参数指纹或者直接利用所述AP的配置信息生成全局业务参数指纹。
  32. 根据权利要求29、30或31所述的装置，其特征在于，所述发送单元将所述配置参数指纹携带在配置请求的Vendor Specific Payload中。
  33. 一种对AP进行配置的系统，其特征在于，该系统包括：网络管理装置、云端AC集群和AP；
    所述网络管理装置包括如权利要求26或27所述的装置；
    所述云端AC集群中的各AC包括如权利要求17至24任一权项所述的装置；
    所述AP，用于向所述AP连接的AC发送配置请求，接收AC返回的配置信息。
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