CN101778126A - Method and system for automatic configuration of server for remote management of user front-end equipment - Google Patents
Method and system for automatic configuration of server for remote management of user front-end equipment Download PDFInfo
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Abstract
The invention discloses a method for remote management of customer premises equipment (CPE) by an automatic configuration server (ACS) through a private network, which comprises the following steps that: the CPE sends registration messages to the ACS through NAT, the NAT packages the registration messages, and when the ACS confirms that the CPE is in a private network after receiving the registration messages, the IP address of the CPE is converted into a public network IP address through NAT conversion, and a backward link request message are sent to the CPE through the public network IP address, thereby realizing the remote management of the CPE. The invention also discloses a system for remote management of the CPE by the ACS through a private network. When in use, the method and the system can reduce the load of the equipment, simplify the processing, and improve the efficiency of the ACS in the remote management of the CPE.
Description
Technical field
The present invention relates to the telemanagement field, be meant the method and system of a kind of Automatic Configuration Server (ACS) pass through private net remote management of user front-end equipment (CPE) especially.
Background technology
TR069 is one of agreement of formulating of the DSL Forum of International Standards Organization, and full name is customer headend equipment wide area network management agreement (CPE WAN, Customer Premise Equipment Wide Lan), and this agreement is used for communicating by letter between CPE and the ACS.The TR069 basic procedure issues the telemanagement order for ACS to CPE alternately, and to the process of CPE realization management, described telemanagement order comprises version, configuration etc.
Stipulate in the CPE WAN management agreement: the first, CPE can be at any time initiates and being connected of ACS by the ACS address; The second, ACS can require CPE to use connection request (ConnectionRequest) notifying mechanism to initiate and being connected of ACS at any time, and realization is to the telemanagement of CPE.Between CPE and the ACS alternately based on ICP/IP protocol, wherein, described telemanagement comprise to cpe device upgrade, to the automatic configuration of CPE, to the monitoring of CPE state and performance and diagnostic operation or the like, but, the dependence condition of this mechanism is: CPE has ACS by the accessible IP of route address, i.e. the IP address of public network.ACS can be when CPE registers first, the IP address of record CPE.
When CPE is registered to ACS first, send logon message to ACS, described logon message comprises the IP address of CPE, and ACS can preserve the IP address of the CPE in the message get off.When CPE is in the private network environment, there is network address translation (NAT between CPE and the ACS, Network Address Translators) equipment, in this case, the logon message that CPE will include self IP address earlier sends to NAT device, and NAT device is the NAT public network IP address with the IP address transition of CPE, and described being converted to encapsulates this logon message, the public network IP address that uses the NAT conversion afterwards sends to ACS as source address with the logon message after the encapsulation; The IP address information that includes CPE under the private network environment in the logon message after the encapsulation.After ACS receives logon message after the encapsulation, parse the IP address information of CPE under the private network environment wherein, and store.
CPE sends logon message by NAT to ACS, and ACS can be directly sends response message to CPE immediately according to the transmission address of logon message, if ACS need carry out telemanagement to CPE, comprises telemanagement message in the response message, thereby realizes telemanagement.If ACS does not need CPE is carried out telemanagement, the content of response message is empty, CPE finishes to communicate by letter with ACS, after a period of time, when ACS need to CPE carry out telemanagement the time, ACS sends out a reverse connection request message to the IP address of the CPE that self stores, but because the IP address that this IP address is CPE under the private network environment, rather than public network IP address, therefore, the reverse connection request message of ACS can't be forwarded and arrive CPE in the private network by NAT, and CPE can't report connection request notice message, and ACS can't realize the telemanagement to CPE.
For this problem, in the WT-111 agreement of DSL Forum a kind of solution has been proposed, be the simple traversal mode (STUN of User Datagram Protoco (UDP) to NAT, Simple Traversal of UDP ThroughNetwork Address Translators), this method requires CPE that the STUN client is installed, the integrated STUN Server of ACS makes that by STUN mechanism ACS can cross-over NAT equipment.The specific implementation flow process of this scheme may further comprise the steps as shown in Figure 1:
Here, the source address of the logon message after described being judged as: ACS relatively encapsulates and the IP address of the CPE in the logon message, if the address is identical, the IP address of the CPE in the logon message is a public network IP address, execution in step 105; If the address difference, then the IP address of the CPE in the logon message is private network IP address, and ACS starts the STUN server, and issues the parameter configuration of STUN to the STUN of CPE client, comprises the transmission cycle of UDP message, execution in step 103;
Concrete, the STUN server of ACS sends response message to NAT, that is: the InformAtOnce value is 1; NAT sends to CPE with response message; If do not need CPE to initiate to connect, ACS sends response, and the InformAtOnce value is 0;
CPE sends connection request notice message by NAT to ACS, and ACS replys response message immediately according to the address that sends connection request notice message, and described response message comprises telemanagement message, thereby realizes the telemanagement to CPE.
But this scheme has following weak point:
The first, CPE need install the STUN client, and ACS needs integrated STUN server, has increased the burden of equipment and the complexity of handling problem;
The second, ACS and CPE formally carry out the TR069 basic procedure mutual before, need CPE to send extra UDP message to ACS, increased the burden of ACS system, reduced the communication efficiency between ACS and the CPE.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method and system of a kind of ACS telemanagement CPE, can effectively reduce the burden of system, simplifies the processing procedure of ACS telemanagement CPE, improves treatment effeciency.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the method for a kind of Automatic Configuration Server ACS pass through private net remote management of user front-end equipment CPE, CPE sends logon message to ACS;
ACS receives when determining that CPE is in private network behind the logon message, and the IP address transition of CPE is become public network IP address through the NAT conversion, sends reverse connection request message by public network IP address to CPE, realizes the telemanagement to CPE.
In the such scheme, described ACS determines that CPE is in private network and specifically comprises: ACS reads the source address of the logon message of encapsulation, resolves logon message, read the IP address of CPE in the logon message, source address that comparison is read and the IP address of CPE, both determine that CPE is in private network not simultaneously.
In the such scheme, described IP address transition with CPE becomes public network IP address to be: ACS replaces with the IP address of the CPE of preservation the public network IP address of NAT conversion.
Also comprise in the such scheme: IP address, the port numbers of the CPE of IP address, port numbers and the correspondence thereof of NAT record ACS; Describedly send reverse connection request message to CPE by public network IP address, specifically comprise: ACS adopts public network IP address to send reverse connection request message via NAT to CPE, after NAT receives message, IP address, port numbers according to the IP address of the ACS of self record, port numbers and corresponding CPE thereof send to CPE with message; After CPE receives, send connection request notice message to ACS; ACS receives that the back answer comprises the response message of telemanagement message, realizes the telemanagement to CPE.
Also comprise in the such scheme: when determining that CPE is in public network, ACS adopts the IP address of CPE directly to send reverse connection request message to CPE, requires CPE to send connection request notice message.
In the such scheme, described by public network IP address before CPE sends reverse connection request message, this method further comprises: ACS replys response message for empty to CPE, finishes the communication process with CPE.
The present invention also provides the system of a kind of ACS pass through private net telemanagement CPE, comprising:
CPE is used to send logon message, receives reverse connection request message, sends connection request notice message;
NAT is used to receive the logon message that CPE sends, and this logon message is encapsulated send to ACS;
ACS, being used to receive the logon message after the encapsulation that NAT sends, determining that CPE is in private network, be the public network IP address of changing through NAT with the private network IP address transition of CPE, and adopt public network IP address to send reverse connection request message to CPE, realize telemanagement to CPE.
In the such scheme, ACS further comprises: logon message processing module and judge module; Wherein, the logon message processing module is used to read the source address of the logon message of encapsulation, resolves logon message, and the IP address of reading and preserving CPE sends to judge module with the IP address of source address and CPE; Judge module, the IP address of source address that is used for relatively reading and CPE, both differences determine that CPE is in private network.
In the such scheme, ACS also comprises: address conversion module and message transmission module; Wherein, address conversion module is used for the IP address of CPE that the logon message processing module is preserved, replaces with the public network IP address of NAT conversion; Message transmission module is used for the public network IP address according to the logon message processing module, sends connection request message to CPE.
In the such scheme, ACS, specifically be used for replying response message for empty to CPE, need behind the communication process of end and CPE CPE is realized telemanagement, send reverse connection request message to public network IP address via NAT, receive the connection request notice message of the CPE transmission of NAT forwarding, reply the response message that comprises telemanagement message, realize telemanagement CPE; Accordingly, NAT is further used for IP address, port numbers according to the IP address, port numbers of the ACS of record and corresponding CPE thereof, and connection request message is sent to CPE, and the connection request that CPE is sent sends to ACS.
This shows, the method and system of ACS pass through private net telemanagement CPE provided by the present invention, with the private network IP address transition of CPE is public network IP address, make ACS can adopt the public network IP address after the conversion directly to carry out information interaction by NAT and CPE, do not need extra install software, thereby reduced the burden of system; Owing to do not need additionally to send datagram, can simplify processing procedure, improve treatment effeciency.
Description of drawings
Fig. 1 realizes the flow chart of ACS pass through private net telemanagement CPE for adopting STUN mechanism;
Fig. 2 is the realization flow schematic diagram of ACS pass through private net telemanagement CPE of the present invention;
Fig. 3 forms schematic diagram for the system of ACS pass through private net telemanagement CPE of the present invention.
Embodiment
Basic thought of the present invention is: CPE sends logon message via NAT to ACS, when ACS determines that CPE is in private network, with the private network IP address transition of CPE is public network IP address, directly communicate by letter with CPE by the public network IP address after the conversion by NAT, require CPE to send connection request notice message, realize telemanagement CPE.
The method specific implementation flow process of ACS pass through private net telemanagement CPE of the present invention may further comprise the steps as shown in Figure 2:
CPE is first during start-up logging, can send logon message TCP BOOTSTRAP Inform to ACS, show that CPE registers to ACS first, the source address of logon message is the IP address of CPE, destination address is the IP address of ACS, therefore, comprise in the described logon message: the IP address of CPE, version information of CPE or the like;
NAT carries out encapsulate forwarded to ACS with the logon message that CPE sends, and the source address of encapsulation post-registration message is the public network IP address of NAT conversion, and destination address is the IP address of ACS; Simultaneously, IP address, the port numbers of the CPE of the IP address of NAT record ACS, port numbers and correspondence thereof.
In this step, ACS receives the logon message of encapsulation, reads the source address of the logon message of encapsulation, and the public network IP address of NAT conversion is just resolved logon message, the IP address of writing down and reading the CPE in the logon message;
Described judgement is specially: whether ACS compares the IP address of public network IP address that is read and the CPE that reads identical, if identical, illustrates that CPE is in public network, and then execution in step 204; Otherwise, illustrate that CPE is in private network, then execution in step 203.
Here, described conversion is specially: ACS replaces the IP address of the CPE of record with the public network IP address that reads.
The destination address of described response message is the transmission address of logon message, if response message is empty, the communication process that CPE and ACS set up finishes.If response message comprises to CPE and issues telemanagement message, then can realize telemanagement to CPE.
In this step, when CPE was in private network, ACS adopted public network IP address to send reverse connection request message via NAT to CPE, and the source address of message is the IP address of ACS, and destination address is the public network IP address of the NAT conversion of ACS record; NAT receives message, and IP address and the IP address of port numbers and CPE and the corresponding relation of port numbers according to the ACS of self record send to CPE with message;
After CPE receives, send connection request notice message InformConnectReq uest to ACS; ACS replys response message Inform Response immediately, and described response message comprises telemanagement message, thereby realizes the telemanagement to CPE;
When CPE was in public network, ACS adopted the IP address of CPE directly to send reverse connection request message to CPE, and CPE sends connection request notice message, thereby realized the telemanagement to CPE.
For realizing said method, the present invention also provides the system of a kind of ACS pass through private net telemanagement CPE, comprising: CPE 31, NAT 32, and key is also to comprise ACS 33; Wherein,
Wherein, described logon message comprises: the IP address of CPE 31, the version information of CPE 31 etc.;
NAT 32, receive the logon message that CPE 31 sends, and this logon message is carried out encapsulate forwarded give ACS33; Also be used to write down the IP address, port numbers of ACS and IP address, the port numbers of corresponding CPE thereof;
Wherein, the source address of the logon message after the encapsulation is the public network IP address of NAT 32;
ACS 33, be used to receive the logon message after the encapsulation that NAT 32 transmits, when determining that CPE 31 is in private network, with the private network IP address transition of CPE 31 is public network IP address, can adopt public network IP address to send reverse connection message, require CPE 31 to send connection request notice message, realize telemanagement CPE.
Further, ACS 33 specifically comprises: logon message processing module 331, judge module 332, address conversion module 333 and message transmission module 334; Wherein,
Logon message processing module 331, be used to read the source address of encapsulation post-registration message, i.e. the public network IP address of NAT 32 conversions is resolved logon message, read and preserve the IP address of CPE 31, and the source address of the logon message that reads and the IP address of CPE 31 are sent to judge module 332;
ACS33 specifically is used for, it is empty replying response message to CPE, need behind the communication process of end and CPE CPE is realized telemanagement, public network IP address to the NAT conversion sends reverse connection request message, receive the connection request notice message of the CPE transmission of NAT forwarding, answer comprises the response message of telemanagement message, realizes the telemanagement to CPE 31.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for an Automatic Configuration Server ACS pass through private net remote management of user front-end equipment CPE, CPE sends logon message to ACS; It is characterized in that this method also comprises:
ACS receives when determining that CPE is in private network behind the logon message, and the IP address transition of CPE is become public network IP address through the NAT conversion, sends reverse connection request message by public network IP address to CPE, realizes the telemanagement to CPE.
2. method according to claim 1 is characterized in that, described ACS determines that CPE is in private network and specifically comprises:
ACS reads the source address of the logon message of encapsulation, resolves logon message, the IP address of reading CPE in the logon message, and source address that comparison is read and the IP address of CPE, both determine that CPE is in private network not simultaneously.
3. method according to claim 2 is characterized in that, described IP address transition with CPE becomes public network IP address to be: ACS replaces with the IP address of the CPE of preservation the public network IP address of NAT conversion.
4. according to claim 1,2 or 3 described methods, it is characterized in that this method also comprises: IP address, the port numbers of the CPE of IP address, port numbers and the correspondence thereof of NAT record ACS;
Describedly send reverse connection request message to CPE, specifically comprise by public network IP address:
ACS adopts public network IP address to send reverse connection request message via NAT to CPE, and after NAT received message, IP address, port numbers according to the IP address of the ACS of self record, port numbers and corresponding CPE thereof sent to CPE with message; After CPE receives, send connection request notice message to ACS; ACS receives that the back answer comprises the response message of telemanagement message, realizes the telemanagement to CPE.
5. according to claim 1,2 or 3 described methods, it is characterized in that this method also comprises: when determining that CPE is in public network, ACS adopts the IP address of CPE directly to send reverse connection request message to CPE, requires CPE to send connection request notice message.
6. according to claim 1,2,3 described methods is characterized in that, described by public network IP address before CPE sends reverse connection request message, this method further comprises:
It is empty that ACS replys response message to CPE, finishes the communication process with CPE.
7. the system of an ACS pass through private net telemanagement CPE comprises:
CPE is used to send logon message, receives reverse connection request message, sends connection request notice message;
NAT is used to receive the logon message that CPE sends, and this logon message is encapsulated send to ACS;
It is characterized in that this system also comprises:
ACS, being used to receive the logon message after the encapsulation that NAT sends, determining that CPE is in private network, be the public network IP address of changing through NAT with the private network IP address transition of CPE, and adopt public network IP address to send reverse connection request message to CPE, realize telemanagement to CPE.
8. system according to claim 7 is characterized in that ACS further comprises: logon message processing module and judge module; Wherein,
The logon message processing module is used to read the source address of the logon message of encapsulation, resolves logon message, and the IP address of reading and preserving CPE sends to judge module with the IP address of source address and CPE;
Judge module, the IP address of source address that is used for relatively reading and CPE, both differences determine that CPE is in private network.
9. system according to claim 8 is characterized in that ACS also comprises: address conversion module and message transmission module; Wherein,
Address conversion module is used for the IP address of CPE that the logon message processing module is preserved, replaces with the public network IP address of NAT conversion;
Message transmission module is used for the public network IP address according to the logon message processing module, sends connection request message to CPE.
10. according to claim 7,8 or 9 described systems, it is characterized in that,
ACS, specifically be used for replying response message for empty to CPE, need behind the communication process of end and CPE CPE is realized telemanagement, send reverse connection request message to public network IP address via NAT, receive the connection request notice message of the CPE transmission of NAT forwarding, answer comprises the response message of telemanagement message, realizes the telemanagement to CPE;
Accordingly, NAT is further used for IP address, port numbers according to the IP address, port numbers of the ACS of record and corresponding CPE thereof, and connection request message is sent to CPE, and the connection request that CPE is sent sends to ACS.
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| CN114640648A (en) * | 2020-12-16 | 2022-06-17 | 华为技术有限公司 | Method, system and related equipment for ACS to pass through NAT equipment |
| CN113242521A (en) * | 2021-07-13 | 2021-08-10 | 深圳市艾伯通信有限公司 | TR 069-based message optimization processing method and system |
| CN115665220A (en) * | 2022-12-22 | 2023-01-31 | 阿里巴巴（中国）有限公司 | Customer premises equipment management system |
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Application publication date: 20100714 |