CN101808014B - Thin AP architecture-based network management scheme and system thereof - Google Patents
Thin AP architecture-based network management scheme and system thereof Download PDFInfo
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Abstract
The invention provides a thin AP architecture-based network management scheme and a system thereof. The network management scheme comprises the following steps that: (1), a network management server transmits an snmp query request to an AC; (2), after receiving the snmp query quest, an snmpd on the AC informs a tunneld on the AC of needing to acquire query information through inter-process communication; (3), the tunneld on the AC informs an AP of requesting to acquire the query information through a management tunnel; (4), AP generates an snmp response by simulating the AC, wherein the source address of the snmp response is an AC uplink address, the destination address is a network management server address, and the data is the query information; and then the AP encapsulates the snmp response and the management tunnel into a message and transmits the message to the AC; and (5), the AC performs tunnel decapsulation on the received message, and forwards the message to the network management server. By using the scheme of the invention, the performance pressure of the AC can be reduced.
Description
Technical field
The present invention relates to a kind of network management scheme and system thereof based on thin AP (WAP) framework.
Background technology
Thin AP is for fat AP.Fat AP is a wireless router, realizes wireless user's access network management and service.Thin AP has simplified the function of AP; Evolving to the centralized control framework that is made up of jointly AC and AP from the AP of single autonomy (is thin AP architecture; With reference to RFC4118); Need be used with AC (Radio Access Controller), access control (comprise differentiate and secure communication) and mobile management, Radio Frequency Management etc. are separated from single AP, by AC centralized control in addition.
Mib (management information bank) inquiry based on thin AP at present has two kinds of schemes.
Fig. 1 shows first kind of mib query scheme based on thin AP of prior art.Fig. 2 shows the form of the message in each step among Fig. 1.
With reference to Fig. 1, tunneld is that AC goes up the tunnel management process, is responsible for accomplishing the management to AP, receives the statistical information of AP.Snmpd is that AC goes up the snmp agent process, is responsible for communicating by letter with NM server, converts statistical information into the snmp form and sends to NM server.The operating process that realizes the mib inquiry is following.
In step (1), the snmpd of NM server on AC sends the snmp inquiry, to obtain a certain mib information.The message that sends comprises MAC field, IP field, UDP field, data field.Wherein, in the MAC field, source MAC is a NM server, and purpose MAC is AC, and vlan information is optional.In the IP field, source IP is a NM server, and purpose IP is AC, and protocol number is UDP (UDP).For the UDP field, destination interface and source port are with reference to network management protocol.
In step (2), after the last snmpd of AC received the snmp inquiry, tunneld need obtain statistical information through the interprocess communication notice.
In step (3), the last tunneld of AC requires to obtain mib information through management tunnel notice AP.The message that sends comprises MAC field, IP field, UDP, tunnel field, data field.In the MAC field, source MAC is AC, and purpose MAC is AP, and vlan information is optional.In IP information, source IP is AC, and purpose IP is AP, and protocol number is UDP; For the UDP field, destination interface and source port are with reference to tunnel protocol (be assumed to be the capwap agreement, then source port is 5246, and destination interface is 32768); The tunnel field can be tunnels such as capwap, ipip, gre
In step (4), AP reports AC through management tunnel with corresponding statistical information.Message format in the step (4) is the same with message format in the step (3), and the content of each field is different.Message in step (4) comprises MAC field, IP field, UDP, tunnel field, data field.In the MAC field, source MAC is AP, and purpose MAC is AC, and vlan information is optional.In the IP field, source IP is AP, and purpose IP is AC, and protocol number is UDP.For the UDP field, destination interface and source port are with reference to tunnel (tunnel) agreement (be assumed to be the capwap agreement, then source port is 32768, and destination interface is 5246).For the tunnel field, can be tunnels such as capwap, ipip, gre.The information that data field needs for inquiry.
In step (5), the last tunneld of AC passes to snmpd through interprocess communication with statistical information after receiving the statistical information that AP reports.
In step (6), the last snmpd of AC converts statistical information into the snmp form, sends to NM server.Step (6) is the same with the message format of step (1), and each field contents is different.In step (6), message comprises MAC field, IP field, UDP field, data field.Wherein, in the MAC field, source MAC is AC, and purpose MAC is a NM server, and vlan information is optional.In the IP field, source IP is AC, and purpose IP is a NM server, and protocol number is UDP, and for the UDP field, destination interface and source port are with reference to network management protocol.
Fig. 3 shows second kind of mib query scheme based on thin AP of prior art.Fig. 4 shows the form of the message in each step among Fig. 3.
With reference to Fig. 3, tunneld is that AC goes up the tunnel management process, is responsible for accomplishing the management to AP, receives the statistical information of AP.Snmpd is that AC goes up the snmp agent process, is responsible for communicating by letter with NM server, converts statistical information into the snmp form and sends to NM server.The operating procedure that realizes the mib inquiry is following.
In step (1), AP regularly reports statistical information to AC through management tunnel, and the last tunneld of AC receives local cache after the statistical information.Message comprises MAC field, IP field, UDP field, tunnel field, data field.Wherein, in the MAC field, source MAC is AP, and purpose MAC is AC, and vlan information is optional.In the IP field, source IP is AP, and purpose IP is AC, and protocol number is UDP, and for the UDP field, destination interface and source port are with reference to Tunnel agreement (be assumed to be the capwap agreement, then source port is 32768, and destination interface is 5246).For the tunnel field, can be tunnels such as capwap, ipip, gre.The information that data field needs for inquiry.
In step (2), NM server sends the snmp inquiry, to obtain a certain mib information.The message that sends comprises MAC field, IP field, UDP field, data field.Wherein, in the MAC field, source MAC is a NM server, and purpose MAC is AC, and vlan information is optional.In the IP field, source IP is a NM server, and purpose IP is AC, and protocol number is UDP (UDP).For the UDP field, destination interface and source port are with reference to network management protocol.
In step (3), after the last snmpd of AC received the snmp inquiry, tunneld need obtain statistical information through the interprocess communication notice.
In step (4), the last tunneld of AC finds out the statistical information that NM server is wanted from the statistical information that preserve this locality, pass to snmpd through interprocess communication.
In step (5), the last snmpd of AC converts statistical information into the snmp form, sends to NM server.Step (5) is the same with the message format of step (2), and each field contents is different.In step (5), message comprises MAC field, IP field, UDP field, data field.Wherein, in the MAC field, source MAC is AC, and purpose MAC is a NM server, and vlan information is optional.In the IP field, source IP is AC, and purpose IP is a NM server, and protocol number is UDP, and for the UDP field, destination interface and source port are with reference to network management protocol.
Fig. 5 shows the scheme that reports of the trap message based on thin AP of the prior art.As shown in Figure 3, tunneld is that AC goes up the tunnel management process, is responsible for accomplishing the management to AP, receives the statistical information of AP.Snmpd is that AC goes up the snmp agent process, is responsible for communicating by letter with NM server, converts statistical information into the snmp form and sends to NM server.The operating procedure that realization trap reports is following.
In step (1), AP reports trap information through management tunnel to AC.Message comprises MAC field, IP field, UDP field, tunnel field, data field.Wherein, in the MAC field, source MAC is AP, and purpose MAC is AC, and vlan information is optional.In the IP field, source IP is AP, and purpose IP is AC, and protocol number is UDP, and for the UDP field, destination interface and source port are with reference to tunnel agreement (be assumed to be the capwap agreement, then source port is 32768, and destination interface is 5246).For the tunnel field, can be tunnels such as capwap, ipip, gre.
In step (2), the last tunneld of AC passes to snmpd through interprocess communication with trap information.
In step (3), the last snmpd of AC sends to NM server with the trap information translation for the snmp form.In step (3), message comprises MAC field, IP field, UDP field, data field.Wherein, in the MAC field, source MAC is AC, and purpose MAC is a NM server, and vlan information is optional.In the IP field, source IP is AC, and purpose IP is a NM server, and protocol number is UDP, and for the UDP field, destination interface and source port are with reference to network management protocol.
Reporting in the scheme of above-mentioned mib query scheme and trap message; AC receives statistical information or the trap of AP; After separating tunnel encapsulation, also need give snmpd with data through interprocess communication, snmpd need be the snmp form of NM server with data transaction.This causes AC performance pressure big.
Therefore, need provide a kind of and satisfy scheme and the system that reduces AC performance pressure under the webmaster demand prerequisite of thin AP architecture.
Summary of the invention
The object of the present invention is to provide a kind of network management scheme and framework thereof that can reduce AC performance pressure.
According to an aspect of the present invention, a kind of network management scheme based on thin AP architecture is provided, has comprised the steps: step (1), NM server will send the snmp query requests and send to AC; Step (2) after the last snmpd of AC receives the snmp query requests, need be obtained Query Information through process through the tunneld on the interprocess communication notice AC; Step (3), AC last tunneld notify AP through management tunnel, requires to obtain Query Information; Step (4), AP simulation AC generates the snmp response, and the source address of said snmp response is that AC goes up row address, and destination address is the NM server address, and data are Query Information, AP adds management tunnel with the snmp response and is packaged into message then, sends to AC; Step (5), AC is transmitted to NM server after the message of receiving is separated tunnel encapsulation.
Said Query Information is mib information or trap information.
In step (3), AC is through tunnel scheduling, with NM server address, the last row address of AC, need information inquiring to notify to AP.
According to a further aspect in the invention, a kind of network management system based on thin AP architecture is provided, has comprised AP, AC, NM server; Wherein, when AP when AC receives the Query Information request of NM server, AP simulation AC generates the snmp response; The source address of said snmp response is that AC goes up row address; Destination address is the NM server address, the information that data need for inquiry, and AP responds snmp and adds management tunnel and be packaged into message then; Send to AC, AC is transmitted to NM server after the message of receiving is separated tunnel encapsulation.Wherein, said Query Information is mib information or trap information.
Description of drawings
Through the description of exemplary embodiment of the present being carried out below in conjunction with accompanying drawing, above-mentioned and other purposes of the present invention and characteristics will become apparent, wherein:
Fig. 1 shows first kind of mib query scheme based on thin AP of the prior art;
Fig. 2 shows the message format in each step among Fig. 1;
Fig. 3 shows second kind of mib query scheme based on thin AP of the prior art;
Fig. 4 shows the message format in each step among Fig. 3;
Fig. 5 shows the trap based on thin AP of the prior art and reports scheme;
Fig. 6 shows the message format in each step among Fig. 5;
Fig. 7 shows according to network management scheme and the system thereof based on thin AP of the present invention;
Fig. 8 shows the message format in each step among Fig. 7.
Embodiment
Below, specify embodiments of the invention with reference to accompanying drawing.
Fig. 7 shows according to network management scheme and the system thereof based on thin AP of the present invention.Fig. 8 shows the message format in each step among Fig. 7.
With reference to figure 7, tunneld is that AC goes up the tunnel management process, is responsible for accomplishing the management to AP, receives the statistical information of AP.Snmpd is that AC goes up the snmp agent process, is responsible for and network management communication, converts statistical information into the snmp form and sends to webmaster.
The operating procedure of mib query scheme is following.
In step (1), the snmpd of NM server on AC sends the snmp inquiry, to obtain a certain mib information.In step (2), after the last snmpd of AC received the snmp inquiry, tunneld need obtain statistical information through the interprocess communication notice.In step (3), the last tunneld of AC requires to obtain mib information through management tunnel notice AP.Above-mentioned steps is identical with step (1), (2), (3) in first scheme of the prior art, and message format is also identical, no longer is repeated in this description.
In step (4), AP simulation AC generates the snmp response, and source address is that AC goes up row address, and destination address is the NM server address, and data are the information that the mib inquiry needs, and then the snmp response of forging is added the management tunnel encapsulation, sends to AC.Message comprises MAC field, IP field, UDP, tunnel field, data field.In the MAC field, source MAC is AP, and purpose MAC is AC, and vlan information is optional.In the IP field, source IP is AP, and purpose IP is AC, and protocol number is UDP.For the UDP field, destination interface and source port are with reference to tunnel agreement (be assumed to be the capwap agreement, then source port is 32768, and destination interface is 5246).For the tunnel field, can be tunnels such as capwap, ipip, gre.
Message in the step (4) and message difference of the prior art are data field.The data field here also comprises internal layer information.Internal layer information comprises: (source MAC is AC to the MAC field; Purpose MAC is a NM server; Vlan information is optional), IP field (source IP is AC, and purpose IP is a NM server), UDP field (protocol number is UDP, and destination interface and source port are with reference to network management protocol), data field (being Mib information).
Step (5), AC receives behind the message and handles according to the normal tunnel forwarding process, send protocol stack to be transmitted to NM server after separating tunnel encapsulation.Particularly, AC will separate tunnel encapsulation from the message that AP receives, obtain the information in the data field, that is, the internal layer information that comprises in the data field directly is transmitted to NM server then.
Equally, this mode is also taked in reporting of trap information.
In step (6), after AP produced trap information, simulation AC generated the snmp response, and the source address of snmp response is that AC goes up row address, and destination address is the NM server address, and data are the information that the trap inquiry needs; Then the snmp response of forging is added the management tunnel encapsulation, send to AC.The Mib data of message in data field in message in the step (6) and the step (4), other are just the same.That is, the data field in the internal layer information is a trap information.
Step (7), AC receives behind the message and handles according to the normal tunnel forwarding process, send protocol stack to be transmitted to NM server after separating tunnel encapsulation.Except the Mib data, the field in other fields and the step (5) is just the same.
In such scheme, AC notifies NM server address, the last row address of AC, mib Query Information to AP through the management tunnel scheduling.AP simulation AC generates the snmp response message, and source address is that AC goes up row address, and destination address is the NM server address, and data are the information (or trap information) that the mib inquiry needs; After then the snmp response of forging being added the management tunnel encapsulation, send to AC, transmit by normal data by AC and handle, be transmitted to NM server.
According to technical scheme of the present invention, satisfying under the webmaster demand prerequisite of thin AP architecture, having reduced the step and the snmpd that give snmpd with data through interprocess communication need be the step of the snmp of NM server with data transaction, has reduced AC performance pressure.
Though be that example is described with mib information and trap information above, according to technical scheme of the present invention, encapsulated information is not limited to mib information and trap information in the snmp response.The information that is transmitted to NM server after any other need be encapsulated by AC all can be issued AC according to encapsulating after the former reason AP simulation AC generation snmp according to the present invention response then.
Although illustrated and described some embodiments of the present invention, it should be appreciated by those skilled in the art, under the situation that does not break away from principle of the present invention and spirit, can make change in an embodiment.Scope of the present invention is limited claim and equivalent thereof.
Claims (6)
1. the network management method based on thin AP architecture comprises the steps:
Step (1), NM server sends to Radio Access Controller with the snmp query requests;
Step (2) after snmpd receives the snmp query requests on the Radio Access Controller, need be obtained Query Information through the tunneld on the interprocess communication notice Radio Access Controller;
Step (3), the tunneld on the Radio Access Controller requires to obtain Query Information through management tunnel notice AP;
Step (4); AP artificial antenna access controller generates the snmp response; The source address of said snmp response is a row address on the Radio Access Controller, and destination address is the NM server address, and data are Query Information; AP adds management tunnel with snmp response and is packaged into message then, sends to Radio Access Controller;
Step (5), Radio Access Controller are transmitted to NM server after the message of receiving is separated tunnel encapsulation,
Wherein, Tunneld is the tunnel management process on the Radio Access Controller; Be responsible for accomplishing the management to AP, receive the statistical information of AP, snmpd is the snmp agent process on the Radio Access Controller; Be responsible for communicating by letter, convert statistical information into the snmp form and send to NM server with NM server.
2. like the network management method in the claim 1, wherein, said Query Information is mib information or trap information.
3. like the network management method in the claim 1, wherein, in step (3), Radio Access Controller is through the tunnel scheduling, with row address on NM server address, the Radio Access Controller, need information inquiring to notify to AP.
4. the network management method based on thin AP architecture comprises the steps:
Step (1), after AP produced statistical information, the artificial antenna access controller generated the snmp response, and source address is a row address on the Radio Access Controller, and destination address is the NM server address, and data are statistical information; Then the snmp response of forging is added the management tunnel encapsulation, send to Radio Access Controller;
Step (2), Radio Access Controller are transmitted to NM server after the message of receiving is separated tunnel encapsulation.
5. the network management system based on thin AP architecture comprises AP, Radio Access Controller, NM server, wherein,
When AP when Radio Access Controller receives the Query Information request of NM server; AP artificial antenna access controller generates the snmp response, and the source address of said snmp response is a row address on the Radio Access Controller, and destination address is the NM server address; The information that data need for inquiry; AP adds management tunnel with snmp response and is packaged into message then, sends to Radio Access Controller, and Radio Access Controller is transmitted to NM server after the message of receiving is separated tunnel encapsulation.
6. like the network management system in the claim 5, wherein, said Query Information is mib information or trap information.
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| CN102480759B (en) * | 2010-11-25 | 2014-11-05 | 中兴通讯股份有限公司 | Network-management realizing method and system on basis of fit wireless access point architecture |
| CN102164419B (en) * | 2011-05-09 | 2014-01-29 | 北京傲天动联技术股份有限公司 | Dispatching method for data packets of multi-rate wireless network, and equipment using same |
| CN102970684B (en) * | 2012-11-20 | 2015-07-15 | 无锡乾煜信息技术有限公司 | System for planning AP (Access Point) frequency point use in AP high-density region in WLAN (Wireless Local Area Network) |
| CN104038360A (en) * | 2013-03-07 | 2014-09-10 | 深圳国人通信有限公司 | Network management realization system and network management realization method based on novel access controller architecture |
| CN105848168B (en) * | 2015-01-16 | 2019-08-02 | 新华三技术有限公司 | A kind of method and device managing wireless access point AP |
| CN105515825B (en) * | 2015-11-25 | 2018-11-30 | 成都广达新网科技股份有限公司 | A kind of SNMP simulator and its test method for network management volume test |
| CN105516121B (en) * | 2015-12-03 | 2018-10-30 | 迈普通信技术股份有限公司 | The method and system that AC is communicated with AP in WLAN |
| CN110351142B (en) * | 2019-07-18 | 2022-02-22 | 迈普通信技术股份有限公司 | Network equipment management method, equipment and system |
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| WO2006083897A2 (en) * | 2005-02-03 | 2006-08-10 | Intel Corporation | Method and system of network management software architectures for mobile broadband wireless networks |
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