CN1323520C - Broad-band insertion service apparatus dialing testing method - Google Patents
Broad-band insertion service apparatus dialing testing method Download PDFInfo
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- CN1323520C CN1323520C CNB021119252A CN02111925A CN1323520C CN 1323520 C CN1323520 C CN 1323520C CN B021119252 A CNB021119252 A CN B021119252A CN 02111925 A CN02111925 A CN 02111925A CN 1323520 C CN1323520 C CN 1323520C
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Abstract
The present invention discloses a dialing and testing method for a broadband server. In the method, a plurality of virtual network cards are simulated on a physical network card of a test computer, and different MAC addresses are set for different virtual network cards; the physical network card sends out frames with non-congenetic MAC addresses, receives all frames from a broadband access server and distributes the frames from the broadband access server to each of the virtual network cards to complete the dialing test for the broadband access server. If the method of the present invention is adopted, the on-line conditions of scores of even hundreds of users can be simultaneously simulated with one cheap test computer and one network card under the condition of no extra hardware investment; if a plurality of test computers are used, the real simultaneous on-line scenes of hundreds of users can be simulated in a laboratory, which reduces the testing cost for the broadband access server and accelerates the test.
Description
Technical field
The present invention relates to the method for testing of the BAS Broadband Access Server of a kind of employing PPPOE (Peer-Peer Protocol over Ethernet is based on the end-to-end protocol of Ethernet) technology, belong to the field tests of data communications equipment.
Background technology
At present, testing broad-band access server, tester's usual way are by a computer, and dialing, transmission data, disconnection connect, circulation carrying out repeatedly.A computer that has a network interface card once can only be set up a connection, if simulate a plurality of users, just need use multiple computers.Like this, in the laboratory, the environment of at all can't user that is virtually reality like reality surfing the Net, can't find potential system defect, can operate as normal as surpass 100 o'clock systems at number of users, number of users surpass 1000 o'clock system works what states, system number of users surpass how many times can collapse, when surpassing 1000 above users the systematic function of BAS Broadband Access Server as how, these situations can't be tested in the laboratory at all, are unpractical because test in the laboratory with 1000 computers simultaneously.Even some special-purpose testers are arranged, price is also very expensive, will increase the research and development expense of BAS Broadband Access Server greatly.
The patent No. is the United States Patent (USP) " Network access server testing system andmethodology " of US6243832, proposed a kind ofly to pass through a test computer and use many modulator-demodulators, simulate a plurality of users simultaneously, by telephone network, concurrently by host computer system of Narrowband Access Server visit.But for the BAS Broadband Access Server that adopts new PPPOE technology, need test computer to be connected to server and to realize functional test by the PPPOE communication mode by network interface card, and the method that this patent is mentioned is only applicable to the test of Narrowband Access Server, can't carry out the system testing of BAS Broadband Access Server.
Summary of the invention
The technical problem that the present invention solves is to propose a kind of broad-band insertion service apparatus dialing testing method, under the situation that does not increase the additional hardware input, adopt a cheap test computer and a network interface card, simulate the situation of tens even up to a hundred user's online simultaneously, if, just can simulate the real situation that hundreds and thousands of users surf the Net simultaneously with several test computers.Like this, in the laboratory, just can test fully, can reduce the testing expense of BAS Broadband Access Server greatly, can accelerate testing progress simultaneously BAS Broadband Access Server.
The present invention proposes a kind of broad-band insertion service apparatus dialing testing method, may further comprise the steps:
1) physical network card of test computer is set to mix mode of operation, and initiates a plurality of threads, disposes the parameter of each thread, and each thread corresponds to a Microsoft Loopback Adapter;
2) physical network card all ethernet frames that will receive filter, if the target MAC (Media Access Control) address of this ethernet frame equals the MAC Address of some Microsoft Loopback Adapters, then this frame are sent to this Microsoft Loopback Adapter and handle, otherwise this frame is abandoned;
3) each Microsoft Loopback Adapter is found the stage by PPPOE separately, obtains the PPPOE Session ID (session id) of this Microsoft Loopback Adapter in this session; By the PPP session stage, obtain the IP address that BAS Broadband Access Server is distributed to this Microsoft Loopback Adapter then;
4) test computer allows a plurality of Microsoft Loopback Adapter concurrent runnings simultaneously, carries out the IP layer with tested BAS Broadband Access Server and communicates by letter;
5) when the test of a Microsoft Loopback Adapter need be ended, this Microsoft Loopback Adapter sent the PADT frame, discharged resource and finished test.
The present invention is by the physical network card of test computer, the multi-user that is virtually reality like reality situation that dials up on the telephone, real subscriber dialing online sight is reproduced in the laboratory, thereby, accomplish the in vitro abundant test of BAS Broadband Access Server with lower testing cost input.
Description of drawings
Fig. 1 is the PPPOE communication flow diagram;
Fig. 2 is the flow chart that Microsoft Loopback Adapter of the present invention is finished to dial up on the telephone;
Fig. 3 is a method of testing schematic diagram of the present invention;
Fig. 4 is the BAS Broadband Access Server protocol architecture figure that adopts the PPPOE technology.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further described:
Introduce the process that test computer dials up on the telephone by network interface card earlier:
PPP over Ethernet (PPPoE) agreement is to relay the PPP frame information in Ethernet, and the technology that provides the PPP on the Ethernet to connect.Ppp protocol has the function of authentification of user and notice IP address.
With reference to PPPOE communication flow diagram shown in Figure 1, PPPOE communication comprises to be found and two stages of PPP session, the discovery stage is stateless Client/Server pattern, and purpose is the ethernet address that obtains the PPPOE terminating end, and sets up a unique PPPOE SESSION_ID.The discovery stage just enters the PPP session stage of standard after finishing.
There are four steps in the discovery stage, comprising: an initiation packet of host broadcast (PADI); One or more access concentrators send divide into groups (PADO); Main frame sends unicast session request grouping (PADR); The access concentrator of selecting sends one and confirms grouping (PADS).When main frame receives the confirmation grouping, main frame can begin to carry out the PPP session stage.Confirm grouping when access concentrator sends out, access concentrator can begin to carry out the PPP session stage.Finish when this stage, the two ends of communication all obtain the ethernet mac address of PPPOE SESSION_ID and opposite end, can unique together definition PPPOE session.
In case the PPPOE session begins, PPP information just can send with any other PPP packing forms.All ethernet frames all are clean cultures.
After the PPPOE between user and the access server sets up, just can set up the PPP session in the above.
Foundation by the PPP session is divided into three phases: LCP negotiation, authentication, ipcp negotiation.
LCP consults mainly to finish the negotiation of some link road characteristic and authentication mode, and after LCP consulted successfully, the user initiated authentication request according to the authentication mode of consulting to access server, and the mode of authentification of user generally adopts PAP or CHAP mode.
PAP is twice handshake authentication, and password is expressly.The pap authentication process is as follows: the dial user sends the user name and password to access server, and access server goes to check whether this user is arranged by radius protocol to radius server, and whether password is correct, sends corresponding response then.
CHAP is the three-way handshake authentication, and password is a ciphertext.The CHAP dial user sends user name to access server, access server sends some messages that produce at random, give by the dial user, the dial user encrypts with the MD5 algorithm with the password of oneself, pass ciphertext back, access server uses the user password of obtaining from radius server to reach message MD5 algorithm for encryption at random, compares the ciphertext of the two, according to the response of success of comparative result return authentication or failure.
Pass through a shared key between access server and the radius server with encrypted test mode communication.
In authentication phase, if in customer data base for this user name has disposed the IP address, then radius server returns to access server with this IP address, the IP address of surfing the Net and using as this user.
If the user does not also obtain the IP address in authentication phase, just need consult the IP address at ipcp phase.In general, when operator provides access service for the user, a collection of IP address should be arranged, be the IP address pool, the user surfs the Net needed IP address just from therewith, when the user surfs the Net, an IP address is distributed in the secondary IP address pond, and when the user was off line, this IP address was returned to address pool.When operator opens access service, the IP address pool is configured in the access server, at ipcp phase, access server secondary IP address pond distributes the IP address of a free time to give the user, as the IP address of user's online.If there has not been available IP address, then ipcp negotiation failure is closed PPP and is connected, and In the view of the user, then is the dialing failure, and ISP temporarily can not provide access service for him.
Introduce broad-band insertion service apparatus dialing testing method of the present invention more in detail, just with of the detailed realization of a test computer by physical network card simulation multi-user online:
Ethernet is a radio network, the network interface card of on an Ethernet, working, if its mode of operation is arranged on promiscuous mode (network interface card that is operated under the promiscuous mode is accepted the frame that all flow through this network interface card), it just can receive frames all on the Ethernet so, and no matter this frame is whose is issued.
Know that from the process that PPPOE dials up on the telephone after the PPPOE discovery stage finished, the both sides that carry out PPPOE communication determined that the other side's method is, obtain the ethernet address of PPPOE SESSION_ID and opposite end, so promptly can uniquely determine a PPPOE session.
During from ethernet frame of network interface card transmission, the source MAC of ethernet frame and target MAC (Media Access Control) address all are to fill as required, and not require that source MAC is necessary for the MAC Address that the Home Network jig has according to the needs of communication.So for BAS Broadband Access Server, if the source MAC difference of the ethernet frame that it is received, it thinks that promptly this is from different network interface cards.
Dial up on the telephone with a network interface card simulation multi-user, key is to send the frame with different source MACs from same network interface card, and the frame that receives is managed effectively.
Detailed implementation procedure with reference to method of testing of the present invention shown in Figure 2 is as follows:
(1) on the computer of test usefulness, initiate a plurality of threads (according to the configuration of computer, the decision thread what), each thread is that a Microsoft Loopback Adapter is (from each thread being used for test process, it is equivalent to a network interface card, externally independently communicates by letter).
Each Microsoft Loopback Adapter has following configuration parameter:
◆ the MAC Address of Microsoft Loopback Adapter (by tester's configuration);
◆ the IP address of Microsoft Loopback Adapter (distributing) by BAS Broadband Access Server;
◆ the Session ID address of Microsoft Loopback Adapter (distributing) by access concentrator;
◆ the Internet user's of Microsoft Loopback Adapter correspondence username and password (by tester's configuration)
(2) network interface card is set to promiscuous mode, with reference to network interface card reception shown in Figure 3 all frames from BAS Broadband Access Server.The filtering frames distribution module filters the frame that receives, if the MAC Address of the frame that receives is identical with the MAC Address of some Microsoft Loopback Adapters, then this frame is forwarded to this Microsoft Loopback Adapter (being thread) and handles.
Process according to above-mentioned dial user's online, each Microsoft Loopback Adapter is when sending PADI, PADR grouping, source MAC wherein should be the MAC Address of user configured Microsoft Loopback Adapter, and the Session_ID of Microsoft Loopback Adapter is returned in the affirmation grouping (PADS) that the access concentrator of selection sends.
In communication process after this, Microsoft Loopback Adapter adopts the MAC Address and the Session_ID of the Microsoft Loopback Adapter of configuration, promptly can proper communication.
(3) after this enter the PPP session stage, each Microsoft Loopback Adapter adopts user configured username and password to authenticate, and after authentication success, it distributes to the IP address of its Microsoft Loopback Adapter to return to the user by BAS Broadband Access Server.
(4) with reference to PPPOE protocol architecture figure shown in Figure 4, can adopt protocol stack and corresponding message format based on PPPOE, carry out the communication of IP layer, its IP address adopts the IP address of Microsoft Loopback Adapter as source IP address.
When (5) communication was ended, by the PADT frame that Microsoft Loopback Adapter sends, its source MAC and Session_ID adopted the value of the correspondence of distributing to Microsoft Loopback Adapter.
Pass through said process, can simulate the situation that many users surf the Net simultaneously with many test computers, adopt and repeatedly to dial and operation such as broken string, stability that can the testing broad-band access server etc., and can many testers on multiple computers, test simultaneously, the cost that adopts is very low, but can accelerate test process greatly.
Claims (5)
1. a broad-band insertion service apparatus dialing testing method is characterized in that, comprises following treatment step:
1) physical network card of test computer is set to mix mode of operation, and initiates a plurality of threads, disposes the parameter of each thread, and each thread corresponds to a Microsoft Loopback Adapter;
2) physical network card all ethernet frames that will receive filter, if the target MAC (Media Access Control) address of this ethernet frame equals the MAC Address of some Microsoft Loopback Adapters, then this frame are sent to this Microsoft Loopback Adapter and handle, otherwise this frame is abandoned;
3) each Microsoft Loopback Adapter is found the stage by PPPOE separately, obtains the PPPOE Session ID of this Microsoft Loopback Adapter in this session; By the PPP session stage, obtain the IP address that BAS Broadband Access Server is distributed to this Microsoft Loopback Adapter then;
4) test computer allows a plurality of Microsoft Loopback Adapter concurrent runnings simultaneously, communicates with tested BAS Broadband Access Server;
5) when the test of a Microsoft Loopback Adapter need be ended, this Microsoft Loopback Adapter sent the PADT frame, discharged resource and finished test.
2. broad-band insertion service apparatus dialing testing method according to claim 1 is characterized in that, the parameter of each thread of configuration in the described step 1 comprises: the Microsoft Loopback Adapter MAC Address that configuration has nothing in common with each other, the username and password of configuration virtual network interface card correspondence.
3. broad-band insertion service apparatus dialing testing method according to claim 1 is characterized in that, the PPPOE discovery stage specifically may further comprise the steps in the described step 3:
A) initiation packet PADI of Microsoft Loopback Adapter broadcasting;
B) one or more access concentrators of BAS Broadband Access Server send the PADO that divides into groups;
C) Microsoft Loopback Adapter sends unicast session request grouping PADR;
D) described access concentrator sends an affirmation grouping PADS.
4. according to claim 1 or 3 described broad-band insertion service apparatus dialing testing methods, it is characterized in that the PPP session stage may further comprise the steps in the described step 3:
E) LCP consults;
F) authentication;
G) ipcp negotiation.
5. broad-band insertion service apparatus dialing testing method according to claim 4, it is characterized in that, when Microsoft Loopback Adapter and BAS Broadband Access Server communicate in the described step 4, Microsoft Loopback Adapter adopts the MAC Address of configuration, and the parameter PP POE Session ID and the IP address that obtain in the step 3 communicate.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021119252A CN1323520C (en) | 2002-05-30 | 2002-05-30 | Broad-band insertion service apparatus dialing testing method |
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| CNB021119252A CN1323520C (en) | 2002-05-30 | 2002-05-30 | Broad-band insertion service apparatus dialing testing method |
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| CN1462131A CN1462131A (en) | 2003-12-17 |
| CN1323520C true CN1323520C (en) | 2007-06-27 |
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| CNB021119252A Expired - Fee Related CN1323520C (en) | 2002-05-30 | 2002-05-30 | Broad-band insertion service apparatus dialing testing method |
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