CN102111304A - Method for system for detecting modems in batches - Google Patents
Method for system for detecting modems in batches Download PDFInfo
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- CN102111304A CN102111304A CN2009102470941A CN200910247094A CN102111304A CN 102111304 A CN102111304 A CN 102111304A CN 2009102470941 A CN2009102470941 A CN 2009102470941A CN 200910247094 A CN200910247094 A CN 200910247094A CN 102111304 A CN102111304 A CN 102111304A
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Abstract
The invention provides a method and a system for detecting modems in batches. The method comprises the following steps that: a test device sends a message A to a digital subscriber line access multiplexer (DSLAM) through a network card A, wherein the message A is forwarded to a user port N of a switch from the user port N of the DSLAM through the modem and is finally sent to a network card B; the test device sends the message B to the switch through the network card B, wherein the message B is forwarded to the user port N of the DSLAM from the user port N of the switch through the modem and is finally sent to the network card A; and the test device compares weather the message A sent by the network card A and the message A received by the network card B are the same, compares whether the message B sent by the network card B and the message B sent by the network card A are the same, and judges whether the current Nth modem fails. In the method, only one computer, one switch and one DSLAM are used for finishing the concurrent test and check of a plurality of the modems, so that hardware cost is saved and detection efficiency is improved.
Description
Technical field
The present invention relates to the broadband network termination fault diagnosis technology, relate in particular to the method and system of a kind of batch detection modulator-demodulator (Modem).
Background technology
Extensive use along with the xDSL broadband, the use amount of xDSL Modem is also increasing, and according to statistics, the whole world has 6,400 ten thousand DSL subscribers approximately at the beginning of 2009, that is to say that nearly 6,400 ten thousand DSL (Digital Subscriber Line Digital Subscriber Line) Modem uses.The thing followed then is all can have a large amount of Modem to reprocess every year.
In the Modem that reprocesses, according to detection, it is intact in fact that 60%～70% Modem is arranged, and does not need to keep in repair.Return to producer after at present these Modem are collected by operator or Operation and Maintenance Center carries out manual detection.
The method of manual detection is as follows at present:
Can lead to the MODEM management address by PING; Can PING the server address of the logical DSLAM first line of a couplet; Check whether activate; Check whether activation rate is up to standard; Detect packet drop; Check whether version is up-to-date; Need roasting for a long time machine under some situation, with the stability of Authentication devices.
Such flow process detects a Modem needs 10 minutes at least, and the testing staff much operates on computers, dig-ins computer monitor, observes the output result.
This process checks that for a spot of Modem problem is little, but then has serious efficiency to reprocessing quantity when bigger, and working strength is also than higher.
Summary of the invention
The invention provides the method and system of a kind of batch detection Modem, only just can finish Modem is carried out concurrent test, roasting machine with 1 computer, 1 switch and 1 DSLAM.
In order to solve the problems of the technologies described above, the invention provides the method for a kind of batch detection modulator-demodulator (Modem), comprise: testing apparatus sends message A by network interface card A to digital subscriber line access multiplex (DSLAM), message A is by the user port N of DSLAM, be forwarded to the user port N of switch through Modem, be sent to described network interface card B at last; Testing apparatus sends message B by network interface card B to switch, and message B is by the user port N of switch, and the user port N through Modem is forwarded to DSLAM is sent to described network interface card A at last; Whether described testing apparatus contrast is identical with the message A that is received by network interface card B by the message A that network interface card A sends, and whether contrast is identical with the message B that is received by network interface card A by the message B that network interface card B sends, thereby whether the up-downgoing communication of judging current N road Modem goes wrong.
Further, described testing apparatus connects the first line of a couplet port of DSLAM by network interface card A, by trunking (Trunk) mouth of network interface card B connection switch, the user port of Modem is connected with the user port N of DSLAM, and the Ethernet interface of Modem is connected with switch ports themselves N.
Further, described message A is that the MAC Address of network interface card B, MAC Address and VLAN (Vlan) ID that source MAC is network interface card A are the message of N+1 for sending destination media access control (MAC) address; Described message B is that MAC Address, the source MAC of network interface card A is that MAC Address and the VLanID of network interface card A is the message of N+1 for sending destination-mac address.
Further, after the first line of a couplet port of DSLAM receives message A, VLanID according to message A is assigned to message A on the user port N of DSLAM, and be forwarded to the user port N of switch by the Modem that links to each other with user port N, described switch sends to message A the network interface card B of described testing apparatus according to the destination-mac address of message A; After the Trunk mouth of switch receives message B, VLanID according to message B is assigned to message B on the user port N of switch, and being forwarded to the user port N of DSLAM by the Modem that links to each other with user port N, described DSLAM sends to the network interface card A of described testing apparatus according to the destination-mac address of message B.
Further, the network interface card B of described testing apparatus is preset as the IP address with the Modem same network segment, and network interface card A is set to the IP address of non-Modem same network segment.
Further, each user port of DSLAM joins VLanID in label (tag) mode and equals among the VLan of its port numbers+1, and first line of a couplet port joins among all user port VLan of DSLAM in the tag mode; The user port of switch connection Modem joins VLanID in the tag mode and equals among the VLan of its port numbers+1, all simultaneously ports all join among the VLan in no label (untag) mode, and the Trunk mouth joins among all user port VLan of switch in the tag mode.
Further, also comprise: switch is closed other ports except that switch Trunk mouth and the user port N that is connected Modem, clears up address resolution protocol (Arp) table of this machine; Described testing apparatus is by WEB agreement or telnet service standard agreement and Modem communication, obtain state information and the configuration information of Modem, if can't get access to described state information and/or configuration information, described state information analyzed by perhaps described testing apparatus and/or configuration information does not meet preset standard, judges that then this Modem damages.
In order to solve the problems of the technologies described above, the present invention also provides the system of a kind of batch detection modulator-demodulator (Modem), comprising: testing apparatus, digital subscriber line access multiplex (DSLAM), Modem and switch; Described testing apparatus connects DSLAM by network interface card A, connects switch by network interface card B, and Modem is connected with the user port N of DSLAM and the user port N of switch respectively; Wherein, described testing apparatus, message B that message A that is used to contrast the message A that sent by network interface card A and is received by network interface card B and contrast are sent by network interface card B and the message B that receives by network interface card A, and know according to comparing result whether the up-downgoing communication of current N road Modem goes wrong; Described message A is that testing apparatus sends to DSLAM by network interface card A, and by the user port N of DSLAM, the user port N through Modem is forwarded to switch is sent to described network interface card B at last; Described message B is that testing apparatus sends to switch by network interface card B, and by the user port N of switch, the user port N through Modem is forwarded to DSLAM is sent to described network interface card A at last.
Further, described testing apparatus by the first line of a couplet port of network interface card A connection DSLAM, connects trunking (Trunk) mouth of switch by network interface card B, the user port of Modem is connected with the user port N of DSLAM, and the Ethernet interface of Modem is connected with switch ports themselves N.
Further, described switch is used to close other ports except that switch Trunk mouth and the user port N that is connected Modem, and the address resolution protocol of this machine of cleaning (Arp) table, notifies described testing apparatus; Described testing apparatus is used for obtaining state information and the configuration information of Modem by WEB agreement or telnet service standard agreement and Modem communication; If can't get access to described state information and/or configuration information, perhaps analyze described state information and/or configuration information and do not meet preset standard, judge that then this Modem damages.
The method and system of batch detection Modem provided by the invention, only just can finish Modem is carried out concurrent test and roasting machine with 1 computer, 1 switch and 1 DSLAM, thereby saved hardware cost greatly, and can detect many Modem simultaneously, improved detection efficiency.
Description of drawings
Fig. 1 is system's connection diagram of the embodiment of the invention;
Fig. 2 is the testing apparatus schematic diagram in the test macro of the embodiment of the invention;
Fig. 3 is the Modem state-detection flow chart of the embodiment of the invention;
Fig. 4 is the Modem communication function testing process figure of the embodiment of the invention.
Embodiment
Below will cooperate graphic and embodiment describes embodiments of the present invention in detail, by this to the present invention how the application technology means implementation procedure that solves technical problem and reach the technology effect can fully understand and implement according to this.
At first form test macro, as shown in Figure 1, comprising: testing apparatus, DSLAM, Modem, switch;
Testing apparatus (uses computer among the present invention, but be not limited to this) go up 2 network interface cards are installed, wherein a network interface card A (being called WAN-NIC) connects the first line of a couplet port of DSLAM by netting twine, (this port is called the Trunk mouth of switch to certain port of another piece network interface card B (being called LAN-NIC) connection switch, being generally the port of switch ports themselves maximum, is port 24 among Fig. 1).DSL subscriber's port of Modem is connected with the user-side port N of DSLAM, and the Ethernet card of Modem is connected with switch ports themselves N;
The LAN-NIC network interface card of computer is preset as the IP address with the Modem same network segment, and the WAN-NIC network interface card is preset as the IP address of non-Modem same network segment;
Each user port of DSLAM joins VLanID in the tag mode and equals among the VLan of its port numbers+1, and the upper united mouth of DSLAM joins among all user port VLan in the tag mode;
The port of switch connection Modem joins VLanID in the tag mode and equals among the VLan of its port numbers+1, all simultaneously ports all join among the VLan in the untag mode, and Trunk mouth (generally being exactly the port of switch ports themselves maximum) joins among all user port VLan in the tag mode.
Detect the Modem state information method on N road:
Close except that switch Trunk mouth be connected the N road port other ports, clear up the Arp table of this machine;
The computer expert crosses WEB, Telnet or other agreements and Modem communication, obtains status information of equipment, configuration information; Analyze data,, or can't get access to parameter at all, illustrate that then Modem damages if find that parameter is not up to standard.
Detect the Modem link downgoing communication functional method on N road:
It is that LAN-NIC MAC Address, source MAC are that WAN-NIC MAC Address and VLanID are the message of N+1 that the computer expert crosses WAN-NIC transmission destination-mac address;
After these messages arrived DSLAM, DSLAM sent to this message on the user port on N road according to its VLanID;
This message is forwarded to switch by Modem, and switch sends to this message on the LAN-NIC of computer according to destination-mac address;
The computer contrast is sent by WAN-NIC and by the message that LAN-NIC receives, can know whether current N road Modem goes wrong, if message is identical, illustrates that normally, if different, explanation goes wrong.
Detect the Modem link uplink communication functional method on N road:
It is that WAN-NIC MAC Address, source MAC are that LAN-NIC MAC Address and VLanID are the message of N+1 that the computer expert crosses LAN-NIC transmission destination-mac address;
After this message arrived switch, switch sent to this message on the user port on N road according to its VLanID;
This message is transmitted by Modem, enters DSLAM, and DSLAM is forwarded to the WAN-NIC of test computer according to its destination-mac address;
The computer contrast is sent by LAN-NIC and by the message that WAN-NIC receives, can know whether current N road Modem goes wrong, if message is identical, illustrates that normally, if different, explanation goes wrong.
Below describe with an application example
The hardware of this batch testing system is formed with reference to Fig. 1,2 network interface cards are installed on a computer, network interface card (WAN side network interface card wherein, corresponding network interface card A) connects the upper united mouth of DSLAM by netting twine, another piece network interface card (LAN side network interface card, corresponding network interface card B) be connected with switch, switch is connected with Modem again, and Modem is by adding the user port that is connected to DSLAM apart from device.
Attention: the communication of computer and switch can be shown by telnet mode or snmp protocol as Fig. 1, also can be connected with the serial ports of computer by the Console port of switch.
Embodiment:
Modem can be operated under two layer models, and as long as two layers of work are normal, if this Modem has three layer models, can affirm that so substantially three layer models also are normal;
Consider it is that present DSLAM is the IP kernel, the user port of DSLAM is tied on the different VLan.
The batch detection device architecture of installing in the computer, as shown in Figure 2:
Main control module: comprise GUI being provided and finishing the main business control logic, call each module and finish system works;
Configuration module: the parameter that the user port that the configuration of the network interface card of installing on the management computer, DSLAM set needs when connecting speed and other operations.Because in the system a lot of piece network interface cards are arranged, system need know which piece network interface card is used as WAN-NIC (WAN side network interface card), which piece network interface card is as LAN-NIC (LAN side network interface card).Obtain the MAC Address of all these network interface cards;
The Modem interface module: nearly all Modem provides the local management interface of Web mode at present, therefore, this module package is by the whole bag of tricks of Http protocol access Modem, comprise: login, open Modem from particular Web page, from web page contents, obtain state information, upgrading Modem configuration file, upgrading firmware or the like;
The Modem state detection module: after getting access to parameter by the Modem interface module, these parameters are analyzed, and handled accordingly, as finding redaction is arranged, then call Modem edition upgrading function and upgrade, the handling process of this module is referring to Fig. 3;
Link detecting module: utilize the transmission that WinPCAP (Windows Packet Capture packet capture) storehouse provides and receive original packet function, send the MAC Address that destination-mac address is set to want to send to certain network interface card by WAN-NIC and LAN-NIC, different VLanID is set, make packet can pass through different Modem, the final packet that receives by contrast, thus whether detect Modem working properly;
Reports module: show test results historical statistics information or the like.
Specifically, as shown in Figure 3, comprising the detection method of Modem state information:
Step 100 is obtained on the switch all connection status Link Status of ports, knows which port is connected with Modem, generates the port table of a connection Modem;
Step 101 is closed the whole ports except that the Trunk mouth;
Step 102, the end condition of setting Modem status checkout: check out the Modem that is connected with all of the port;
Step 103, N port of enabled switch cleared up this machine Arp table;
Step 104 is carried out the Ping operation to the IP address of the Modem that links to each other with this N port;
Step 105, if the Ping of this Modem is operated successfully, then execution in step 106, if the Ping operation failure, then execution in step 112;
Step 106 connects Modem by Web interface (Web agreement);
Step 107, whether detect connection successful, if success, then execution in step 108, otherwise, execution in step 112;
Step 108 reads Modem version information and line state information;
Step 109, whether detect link foundation successful, if success, execution in step 110, otherwise, execution in step 112;
Step 110 detects the speed that connects and whether reaches default standard value, if then execution in step 111, otherwise, execution in step 112;
Step 111 judges that the state information of this Modem that links to each other with the N port is normal, execution in step 113;
Step 112 judges that this Modem that links to each other with the N port damages, and notes the reason of fault, execution in step 113;
Step 113 is closed this N port;
Step 114, the end condition of the Modem status checkout of setting according to step 102, after having detected all Modem, execution in step 115;
Step 115, the testing result of output Modem.
Specifically, as shown in Figure 4, comprising the detection method of Modem communication function:
Step 200 is obtained the LinkUp port list from switch;
Step 201 is noted the current time that test begins;
Step 202, set the end condition that circulation is given out a contract for a project: the message of all Modem all sends and finishes;
Step 203, generating a band VLanID is the Ping Request bag of N, and destination-mac address is the MAC Address of LAN network interface card, and source MAC is the MAC Address of WAN network interface card, the address of also containing bag simultaneously in the content of this bag also is recorded in the address of bag in the message tabulation;
Step 204, generating a band VLanID is the Ping Replay bag of N, and destination-mac address is the MAC Address of WAN network interface card, and source MAC is the MAC Address of LAN network interface card, the address of also containing bag simultaneously in the content of this bag also is recorded in the address of bag in the message tabulation;
Step 205 is called the WinPCAP function and is sent 2 messages;
Step 206, the end condition that the circulation of setting according to step 202 is given out a contract for a project, when the message of all Modem all send finish after, execution in step 207;
Step 207, time-delay certain hour (some milliseconds);
Time-delay herein is excessive for fear of sending message amount, if do not delay time, just is equivalent to give out a contract for a project with maximum rate, might surpass the actual bandwidth of network interface card, causes packet loss;
Step 208 is upgraded the interface progress and is shown;
Step 209 checks whether reach the testing time, if do not have, and redirect execution in step 202; If arrive execution in step 210;
Step 210 was delayed time 2 seconds;
Check to send the result after transmission finishes at once and the successful message of actual transmission just might occur and be not mistaken as and receive successfully, so need certain time-delay;
Step 211 is analyzed the message tabulation, and the Ping Request that compares bag and Ping Replay bag obtain testing result;
Step 212, the cleaning data discharge internal memory.
Its functional description with aforesaid device is corresponding, and weak point is not given unnecessary details at this one by one with reference to the narration of said apparatus part.
Though the disclosed execution mode of the present invention as above, yet described content is not in order to direct qualification protection scope of the present invention.Any the technical staff in the technical field of the invention under the prerequisite that does not break away from the disclosed spirit and scope of the present invention, can do a little change what implement in form and on the details.Protection scope of the present invention still must be as the criterion with the scope that appending claims was defined.
Claims (10)
1. the method for a batch detection modulator-demodulator (Modem) is characterized in that, comprising:
Testing apparatus sends message A by network interface card A to digital subscriber line access multiplex (DSLAM), and message A is by the user port N of DSLAM, and the user port N through Modem is forwarded to switch is sent to described network interface card B at last; Testing apparatus sends message B by network interface card B to switch, and message B is by the user port N of switch, and the user port N through Modem is forwarded to DSLAM is sent to described network interface card A at last;
Whether described testing apparatus contrast is identical with the message A that is received by network interface card B by the message A that network interface card A sends, and whether contrast is identical with the message B that is received by network interface card A by the message B that network interface card B sends, thereby whether the up-downgoing communication of judging current N road Modem goes wrong.
2. the method for claim 1 is characterized in that,
Described testing apparatus is by the first line of a couplet port of network interface card A connection DSLAM, and by trunking (Trunk) mouth of network interface card B connection switch, the user port of Modem is connected with the user port N of DSLAM, and the Ethernet interface of Modem is connected with switch ports themselves N.
3. method as claimed in claim 2 is characterized in that,
Described message A is that the MAC Address of network interface card B, MAC Address and VLAN (Vlan) ID that source MAC is network interface card A are the message of N+1 for sending destination media access control (MAC) address; Described message B is that MAC Address, the source MAC of network interface card A is that MAC Address and the VLanID of network interface card A is the message of N+1 for sending destination-mac address.
4. method as claimed in claim 3 is characterized in that,
After the first line of a couplet port of DSLAM receives message A, VLanID according to message A is assigned to message A on the user port N of DSLAM, and be forwarded to the user port N of switch by the Modem that links to each other with user port N, described switch sends to message A the network interface card B of described testing apparatus according to the destination-mac address of message A;
After the Trunk mouth of switch receives message B, VLanID according to message B is assigned to message B on the user port N of switch, and being forwarded to the user port N of DSLAM by the Modem that links to each other with user port N, described DSLAM sends to the network interface card A of described testing apparatus according to the destination-mac address of message B.
5. method as claimed in claim 3 is characterized in that,
The network interface card B of described testing apparatus is preset as the IP address with the Modem same network segment, and network interface card A is set to the IP address of non-Modem same network segment.
6. method as claimed in claim 3 is characterized in that,
Each user port of DSLAM joins VLanID in label (tag) mode and equals among the VLan of its port numbers+1, and first line of a couplet port joins among all user port VLan of DSLAM in the tag mode;
The user port of switch connection Modem joins VLanID in the tag mode and equals among the VLan of its port numbers+1, all simultaneously ports all join among the VLan in no label (untag) mode, and the Trunk mouth joins among all user port VLan of switch in the tag mode.
7. method as claimed in claim 3 is characterized in that, also comprises:
Switch is closed other ports except that switch Trunk mouth and the user port N that is connected Modem, clears up address resolution protocol (Arp) table of this machine;
Described testing apparatus is by WEB agreement or telnet service standard agreement and Modem communication, obtain state information and the configuration information of Modem, if can't get access to described state information and/or configuration information, described state information analyzed by perhaps described testing apparatus and/or configuration information does not meet preset standard, judges that then this Modem damages.
8. the system of a batch detection modulator-demodulator (Modem) is characterized in that, comprising: testing apparatus, digital subscriber line access multiplex (DSLAM), Modem and switch;
Described testing apparatus connects DSLAM by network interface card A, connects switch by network interface card B, and Modem is connected with the user port N of DSLAM and the user port N of switch respectively;
Wherein, described testing apparatus, message B that message A that is used to contrast the message A that sent by network interface card A and is received by network interface card B and contrast are sent by network interface card B and the message B that receives by network interface card A, and know according to comparing result whether the up-downgoing communication of current N road Modem goes wrong; Described message A is that testing apparatus sends to DSLAM by network interface card A, and by the user port N of DSLAM, the user port N through Modem is forwarded to switch is sent to described network interface card B at last; Described message B is that testing apparatus sends to switch by network interface card B, and by the user port N of switch, the user port N through Modem is forwarded to DSLAM is sent to described network interface card A at last.
9. system as claimed in claim 8 is characterized in that,
Described testing apparatus, by the first line of a couplet port of network interface card A connection DSLAM, by trunking (Trunk) mouth of network interface card B connection switch, the user port of Modem is connected with the user port N of DSLAM, and the Ethernet interface of Modem is connected with switch ports themselves N.
10. system as claimed in claim 8 is characterized in that,
Described switch is used to close other ports except that switch Trunk mouth and the user port N that is connected Modem, and the address resolution protocol of this machine of cleaning (Arp) table, notifies described testing apparatus;
Described testing apparatus is used for obtaining state information and the configuration information of Modem by WEB agreement or telnet service standard agreement and Modem communication; If can't get access to described state information and/or configuration information, perhaps analyze described state information and/or configuration information and do not meet preset standard, judge that then this Modem damages.
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