CN1549499A - Proxy network management realizing method based on SNMP protocol - Google Patents
Proxy network management realizing method based on SNMP protocol Download PDFInfo
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Abstract
The method for implementing proxy network administration based on SNMP protocol in distributed network communication equipment system is characterized by that in the distributed network communication system a proxy network administration server is set, and on said proxy network administration server a public network IP address and a private network IP address are distributed simultaneously, the private network IP address is set on the administrated equipment, the network administration station can utilize public network IP address and proxy network administration server to implement route, the between of proxy network administration server, and administrated equipment can utilize private network IP address to implement route, the proxy network administration server can be used for process and repeat the SNMP message to implement the communication between network administration station and administrated equipment. Said invention provides an economic and effective method for implementing network administration of network element in the distributed network communication system.
Description
Technical field
The present invention relates to a kind of implementation method of agent network management, relate in particular in a kind of distributed network communication device systems implementation method based on the agent network management of snmp protocol.
Background technology
Nearly all network communication equipment has all possessed Simple Network Management Protocol SNMP at present, it is Simple Network Management Protocol Network Management Function, the SNMP network management system is by network management workstation NMS, be that Network Management Station forms with the OAMAgent SNMP Agent that operates on the managed device, be that snmp protocol by standard communicates between SNMP Agent and the NMS, the SNMP network management system can be finished the functions such as configuration management, performance management and fault management to managed device.
For distributed network communicating system, as WLAN (wireless local area network) WLAN, it is WirelessLocal Area Network network system, operator can be at many hot zones of each urban planning when carrying out the wlan network construction, and arrange the wireless access point AP of some as required at each hot zones, be Access Point, these AP equipment and other network equipments have been formed a huge distributed network, all need to carry out network management for each the AP equipment in the network.
In such distributed network communication system, want to realize that to the SNMP webmaster of each network element wherein, the way that adopts has two classes at present:
1. on each network element, dispose public network IP address, though can realize the remote centralized management like this, because the quantity of network element is a lot, so can take a lot of public network IP address, present public network IP address resources is at full stretch, and therefore the cost of this way is very big.
2. on network element, dispose private network IP address, set up network management workstation to realize network management to all network elements in this focus in each hot spot region, so not only can cause the resource distribution of network management workstation too to waste, and can't realize the remote centralized management.
Summary of the invention
The implementation method that the purpose of this invention is to provide a kind of agent network management based on snmp protocol, solving in the prior art the waste of public network IP address and can't realize the shortcoming of remote centralized management, for the network management of network element in the distributed network communication system provides a kind of cost-effective implementation method.
The implementation method of the agent network management based on snmp protocol of the present invention is, in the distributed network communication system, the agent network management server is set, on this agent network management server, dispose public network IP address and private network IP address simultaneously, managed device configuration private network IP address, network management workstation is realized route by public network IP address and agent network management server, realize route by private network IP address between agent network management server and the managed device, by of processing and the forwarding of agent network management server, finish communicating by letter between network management workstation and the managed device to the SNMP message;
Described network management workstation is during by the management information bank on the agent network management server access managed device, structure SNMP proxy requests message, and this request message sent to the agent network management server, comprise the SNMP message in the community field in the described SNMP proxy requests message and transmitted needed additional information, the agent network management server is after receiving the SNMP request message, according to the new SNMP request message of additional information generation wherein, and it is forwarded on the real managed device, managed device returns the SNMP back message using to the agent network management server, the agent network management server recovers the raw information in the back message using, and it is forwarded on the corresponding network management workstation;
Described additional information comprises the work IP address of SNMP Agent on SNMP Agent is supported on the managed device SNMP version number and community and the managed device and udp port number;
Described agent network management server is after receiving the SNMP request message, request message is carried out the ASN.1 decoding, parse additional information wherein, and the relevant raw information in the record proxy requests message, revise version and community field in the original SNMP request message according to the additional information that parses, and request-id is numbered again, again carry out ASN.1 coding back and generate new SNMP request message, and new SNMP request message is forwarded on the real managed device, and information such as the correlation behavior of the SNMP request message transmitted of record and request-id;
When described agent network management server carries out the ASN.1 decoding to request message the community field is carried out validity check, if have the proxy requests sign in the community field, then think SNMP proxy requests message, otherwise handle as common SNMP request message;
Described community field is the form of proxy@vx@cstring@addr@port, then think SNMP proxy requests message, described proxy@ prefix is the sign of proxy requests message, the SNMP version number that vx is on the managed device to be supported, cstring is the community character string on the managed device, and addr and port are respectively the work IP address of SNMP Agent on the managed device and udp port number;
Described managed device receives from carrying out corresponding management information bank accessing operation after the SNMP of the agent network management server request, structure SNMP back message using, back message using is issued the agent network management server, receive the SNMP back message using that returns on the described agent network management server, mate in the information of being preserved according to the request-id field in the back message using decoding back, if the match is successful, then recover the version in this message, relevant field such as community and request-id original value, again carry out the coding of message, be forwarded to then on the corresponding network management workstation;
When described request-id field is mated,, then abandon this message if coupling is unsuccessful in the information of being preserved;
If alarm or fault take place on the described managed device, then send SNMP Trap message to the agent network management server in real time, after receiving, the agent network management server again this SNMP Trap message is forwarded to network management workstation.
Beneficial effect of the present invention is: in the present invention, because the interface between agent network management server and the network management workstation, and the interface between agent network management server and the managed device is the snmp protocol interface of standard, so the implementation method based on the agent network management of snmp protocol that the present invention proposes does not all have specific (special) requirements to managed device and network management workstation, only need in existing equipment, to select an equipment get final product, for the network management of network element in the distributed network communication system provides a kind of cost-effective implementation method as the agent network management server.
Specifically, the present invention has following advantage:
1. saved a large amount of public network IP address; Need on every managed devices, all not dispose public network IP address, have only the agent network management server just to take public network IP address.
2. satisfied the requirement of telemanagement and centralized management, need network management workstation be set in managed device this locality, network management workstation can centralized configuration, realizes telemanagement and monitoring to network by the agent network management server.
3. in the present invention, interface between agent network management server and the network management workstation and and managed device between interface be the SNMP interface of standard, have extraordinary versatility and flexibility, be applicable in the various systems that form by distributed network communication equipment.
4. the principle of the invention is simple, and development difficulty is little, and investment cycle is short.
Description of drawings
Fig. 1 a is the form schematic diagram of SNMP request message;
Fig. 1 b is the PDU form schematic diagram of SNMP request message;
Fig. 2 is the administrative model schematic diagram of agent network management of the present invention;
Fig. 3 is the handling process schematic diagram of agent network management server among the present invention.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
WLAN devices is when reality operation networking, general wireless access point AP and the access controller AC of adopting, be Access Controller, AP is the more and relatively dispersion that distributes as number of devices, for the consideration of saving the IP address, usually be configured to private network IP address on the AP, AC is as concentrating and control appliance that user radio inserts, realize user's authentication, functions such as management and record keeping, the AC number of devices is less relatively, and device distribution is relatively concentrated, the network side interface configuration of AC is a public network IP address, user side interface is configured to private network IP address, and user side interface links to each other with the Ethernet interface of AP by wired mode, can and AP between communicate.Because the network management center of operator is positioned on the public network, the route between AC and the network management center can reach, but is private net address because AP goes up, and the route between the network management center is unreachable.
Apparatus factor based on above-mentioned actual operation, in the present invention, shown in Fig. 2, adopt AC as SNMP agent network management server S NMP Proxy Agent, AP is as real managed device SNMP Proxy Target, on set agent network management server S NMP Proxy Agent, dispose public network IP address and private network IP address simultaneously, managed device SNMP Proxy Target configuration private network IP address, network management workstation NMS realizes route by public network IP address and agent network management server, realize route by private network IP address between agent network management server and the managed device, by of processing and the forwarding of agent network management server, finish communicating by letter between network management workstation and the managed device to the SNMP message.
The agent network management server is as the bridge between network management workstation and the managed device, mainly play the effect of handling and transmitting the SNMP message, be forwarded on the corresponding managed device after the SNMP request message that receives from network management workstation handled, be forwarded on the NMS after the SNMP back message using that managed device is returned is handled.
As shown in Figure 3, its concrete handling process is as follows:
Network management workstation is during by the management information bank on the agent network management server access managed device, structure SNMP proxy requests message, and this request message sent to the agent network management server, the form of SNMP proxy requests message still strictly observes the form of standard SNMP message, the form of whole SNMP message as shown in Figure 1a, protocol Data Unit PDU wherein, the form that is Protocol Data Unit is shown in Fig. 1 b, at dissimilar SNMP PDU, as GetRequest PDU, GetNextRequest PDU, SetRequest PDU etc., all observe the PDU form shown in Fig. 1 b, PDU type field identification their type, the request object identifier OID that is bound among the variable Bindings list variable-bindings of proxy requests message, be that ObjectIdentifier is the OID example on the real managed device, the form of the community field in the described SNMP proxy requests message also comprises transmits needed additional information, reflection managed device information, the work IP address of SNMP Agent and udp port number on the SNMP version number that is supported as SNMP Agent on the managed device and community and the managed device.
The agent network management server is after receiving the SNMP request message, request message is carried out the ASN.1 decoding, because existing common SNMP Agent exists on the agent network management server, has simultaneously the OAMAgent function again, therefore, the agent network management server must be distinguished normal SNMP request or SNMP proxy requests to the SNMP request message that receives, and this differentiation work is to realize by the parsing to the community field in the SNMP request message.
At first the community field is carried out validity check,, then think SNMP proxy requests message, otherwise handle as common SNMP request message if having the proxy requests sign in the community field; The community field is the form of proxy@vx@cstring@addr@port, then think SNMP proxy requests message, wherein the proxy@ prefix is the sign of proxy requests message, the SNMP version number that vx is on the managed device to be supported, value is v1 or v2, cstring is the community character string on the managed device, addr and port are respectively the work IP address of SNMPAgent on the managed device and udp port number, and SNMP proxy requests message will be forwarded to this IP address and port by the agent network management server; The agent network management server parses goes out the additional information in the SNMP request message, and the relevant raw information in the record proxy requests message, revise version and community field in the original SNMP request message according to the additional information that parses, and request-id is numbered again, again carry out ASN.1 coding back and generate new SNMP request message, and new SNMP request message is forwarded on the real managed device, correspondingly be provided with and wait for the timer that receives the managed device back message using, and information such as the correlation behavior of the SNMP request message transmitted of record and request-id finish this time SNMP processing of request in Proxy overall situation control chained list.
Managed device receives from carrying out corresponding management information bank accessing operation after the SNMP of the agent network management server request, structure SNMP back message using, back message using is issued the agent network management server, receive the SNMP back message using that returns on the described agent network management server, mate in the information that Proxy overall situation control chained list is preserved according to the request-id field in the back message using decoding back, if the match is successful, then recover the version in this message, relevant field such as community and request-id original value, again carry out the coding of message, be forwarded to then on the corresponding network management workstation; If coupling is unsuccessful, illustrate that this back message using is overtime, then abandon this message.
If alarm or fault take place on the managed device, illustrate and produce certain alarm on certain managed device of hanging under the agent network management server, then send SNMP Trap message to the agent network management server in real time, will not change the content in this SNMP Trap message after at this moment the agent network management server receives and directly this SNMP Trap message is forwarded to network management workstation.
Claims (9)
1. implementation method based on the agent network management of snmp protocol, it is characterized in that: in the distributed network communication system, the agent network management server is set, on this agent network management server, dispose public network IP address and private network IP address simultaneously, managed device configuration private network IP address, network management workstation is realized route by public network IP address and agent network management server, realize route by private network IP address between agent network management server and the managed device, by of processing and the forwarding of agent network management server, finish communicating by letter between network management workstation and the managed device to the SNMP message.
2. the implementation method of the agent network management based on snmp protocol according to claim 1, it is characterized in that: described network management workstation is during by the management information bank on the agent network management server access managed device, structure SNMP proxy requests message, and this request message sent to the agent network management server, comprise the SNMP message in the community field in the described SNMP proxy requests message and transmitted needed additional information, the agent network management server is after receiving the SNMP request message, according to the new SNMP request message of additional information generation wherein, and it is forwarded on the real managed device, managed device returns the SNMP back message using to the agent network management server, the agent network management server recovers the raw information in the back message using, and it is forwarded on the corresponding network management workstation.
3. the implementation method of the agent network management based on snmp protocol according to claim 2 is characterized in that: described additional information comprises the work IP address of SNMP Agent on SNMP Agent is supported on the managed device SNMP version number and community and the managed device and udp port number.
4. according to the implementation method of claim 2 or 3 described agent network managements based on snmp protocol, it is characterized in that: described agent network management server is after receiving the SNMP request message, request message is carried out the ASN.1 decoding, parse additional information wherein, and the relevant raw information in the record proxy requests message, revise version and community field in the original SNMP request message according to the additional information that parses, and request-id is numbered again, again carry out ASN.1 coding back and generate new SNMP request message, and new SNMP request message is forwarded on the real managed device, and information such as the correlation behavior of the SNMP request message transmitted of record and request-id.
5. the implementation method of the agent network management based on snmp protocol according to claim 4, it is characterized in that: when described agent network management server carries out the ASN.1 decoding to request message the community field is carried out validity check, if have the proxy requests sign in the community field, then think SNMP proxy requests message, otherwise handle as common SNMP request message.
6. the implementation method of the agent network management based on snmp protocol according to claim 5, it is characterized in that: described community field is the form of proxy@vx@cstring@addr@port, then think SNMP proxy requests message, described proxy@ prefix is the sign of proxy requests message, the SNMP version number that vx is on the managed device to be supported, cstring is the community character string on the managed device, and addr and port are respectively the work IP address of SNMP Agent on the managed device and udp port number.
7. the implementation method of the agent network management based on snmp protocol according to claim 4, it is characterized in that: described managed device receives from carrying out corresponding management information bank accessing operation after the SNMP of the agent network management server request, structure SNMP back message using, back message using is issued the agent network management server, receive the SNMP back message using that returns on the described agent network management server, mate in the information of being preserved according to the request-id field in the back message using decoding back, if the match is successful, then recover the version in this message, relevant field such as community and request-id original value, again carry out the coding of message, be forwarded to then on the corresponding network management workstation.
8. the implementation method of the agent network management based on snmp protocol according to claim 7 is characterized in that: when described request-id field is mated in the information of being preserved, if coupling is unsuccessful, then abandon this message.
9. according to the implementation method of claim 5 or 6 or 7 or 8 described agent network managements based on snmp protocol, it is characterized in that: if alarm or fault take place on the described managed device, then send SNMP Trap message to the agent network management server in real time, again this SNMP Trap message is forwarded to network management workstation after the agent network management server receives.
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| WO2005122471A1 (en) * | 2004-06-08 | 2005-12-22 | Huawei Technologies Co., Ltd. | A snmp-based asynchronous communication mechanism process method |
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| CN106941527A (en) * | 2017-03-15 | 2017-07-11 | 网宿科技股份有限公司 | Shifting method and its system in a kind of data transfer |
| CN107154872A (en) * | 2017-05-05 | 2017-09-12 | 烽火通信科技股份有限公司 | The method and system of distributed asynchronous management telecommunication apparatus based on snmp protocol |
| CN109218064A (en) * | 2017-07-07 | 2019-01-15 | 普天信息技术有限公司 | network management system and management method |
| CN109889384A (en) * | 2019-02-22 | 2019-06-14 | 北京邮电大学 | A method of NAT, which is carried out, using snmp protocol passes through managing intranet equipment |
| CN111600744A (en) * | 2020-04-08 | 2020-08-28 | 深圳震有科技股份有限公司 | Multi-board control method, system and storage medium based on SNMP |
| CN111600744B (en) * | 2020-04-08 | 2022-08-23 | 深圳震有科技股份有限公司 | Multi-board control method, system and storage medium based on SNMP |
| CN117221396A (en) * | 2023-10-26 | 2023-12-12 | 深圳市拓普泰尔科技有限公司 | Network data interaction method, device, system, storage medium and computer equipment |
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