CN100426759C - Method for detecting digital user line cut-in multiplexing device protocol processing performance - Google Patents
Method for detecting digital user line cut-in multiplexing device protocol processing performance Download PDFInfo
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Abstract
The present invention relates to a method for detecting DSLAM protocol processing performance so as to an uplink port of the DSLAM supports the protocol supported by an XDSL port; two detection ports of a detection instrument are respectively connected to the two uplink ports of the DSLAM, and a plurality of channels of service connection are established between the two uplink ports of the DSLAM; utilizing the detection instrument simulates a superior device and a user; various protocol messages are sent to one of the uplink ports and respectively sent to each channel of service connection between the two uplink ports; the detection instrument receives and observes the protocol message returned from the DSLAM, and judges the different kinds of performance of the DSLAM. The present invention reduces the cost of detection as well as reduces the requirement to detection space and conveniently realizes simulation detection under the condition of a great number of users.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the protocol processes performance test methods of a kind of Digital Subscriber Line Access Multiplexer (DSLAM).
Background technology
DSLAM (Digital Subscriber Line Access Multiplexer, be Digital Subscriber Line Access Multiplexer) major function be with a large amount of xDSL (x Digital Subscriber Line, it is x Digital Subscriber Line, comprising ADSL, VDSL, SHDSL or the like) user's business converges, and sends to upper level equipment by uplink port then; Simultaneously, the business that will send from the upper level equipment that uplink port receives is distributed, and sends to each user by the xDSL terminal.The uplink port of DSLAM equipment may be an Ethernet interface, also may be ATM (asynchronous transfer mode) interface, perhaps has this two kinds of interfaces simultaneously.
Along with the continuous development of technology, DSLAM equipment also needs to finish increasing protocol processes function except needs are finished basic service convergence distribution function.For example in IPTV (Internet Protocol Television) business, DSLAM equipment need be finished the processing of IGMP (Internet Group Management Protocol).The networking of IPTV business as shown in Figure 1, TV among the figure (TV) inserts the XDSL terminal by STB (set-top box), when xDSL user need watch the program of certain channel, can send add this program multicast group the IGMP message to DSLAM equipment.DSLAM equipment need be handled this message, and whether analyze this user has the authority of watching this program.If the user has authority, and DSLAM equipment also do not add this program multicast group, then sends the IGMP member's report message that adds this program multicast group to higher level equipment by uplink port.In general, this IGMP member's report message of upwards sending of DSLAM equipment is identical with that IGMP member's report message that xDSL user sends to DSLAM equipment.Simultaneously, if the user has authority, DSLAM equipment can send to this xDSL user with the program data stream of this channel of receiving from uplink port.
When xDSL user no longer needs to watch the program of this channel, can send leave this program multicast group IGMP leave message to DSLAM equipment.DSLAM equipment need be handled this message, and the program data stream that stops this channel will to receive from uplink port sends to this xDSL user.Simultaneously, check whether also have other user watching the program of this channel,, then send the IGMP leave message that leaves this program multicast group to higher level equipment by uplink port if do not have.
Therefore, the handling property of variety of protocol just becomes the important component part of DSLAM equipment performance.The for example maximum xDSL number of users that can support of certain agreement, certain protocol massages number that can handle each second or the like.Because it is very big that DSLAM equipment inserts number of users, so the protocol processes performance of test DSLAM equipment becomes an important process under large user's amount situation.
Test the protocol processes performance of DSLAM equipment under large user's amount situation, the most direct method is to test according to the practical situations of DSLAM equipment, and Test Networking figure as shown in Figure 2.On DSLAM equipment, between each xDSL terminal and uplink port, set up professional a connection respectively as normal service application.Then, utilize tester (as adopting network performance tester devices such as SmartBits, AX/4000) to simulate higher level equipment and xDSL user.The different test ports of tester are connected respectively on the uplink port and each xDSL terminal of DSLAM equipment, send the variety of protocol message with tester to the xDSL terminal then, receive and observe the protocol massages that xDSL terminal and DSLAM equipment send to tester simultaneously, and judge the various performances of DSLAM device processes protocol massages in view of the above.
With the top IPTV business of mentioning is example, if test DSLAM equipment is for the IGMP member's report message of xDSL user's transmission and the handling property of IGMP leave message, test environment as shown in Figure 2 be can build, multicast user's (being STB and TV) and higher level equipment (being the video bearer network) simulated with tester.Then, alternately send IGMP member report message and IGMP leave message from the test port that is connected to the xDSL terminal to the xDSL terminal with tester; Simultaneously, by IGMP member's report message and the IGMP leave message that the test port that is connected to DSLAM equipment upstream Interface receives and record DSLAM equipment sends, observe its quantity and whether equate to the message amount that the xDSL terminal sends with tester.In test process, improve constantly the speed of tester transmission message, till the message amount of message amount that tester receives less than its transmission, then the speed of tester transmission this moment message has just reached the processing limit of DSLAM equipment, and just DSLAM equipment is for the IGMP member's report message of xDSL user's transmission and the handling property of IGMP leave message.What it should be noted that in test that message that each test port sends adds/leave must be different multicast group, otherwise DSLAM equipment only can send message to tester when receiving the message that first test port sends.
The shortcoming of above-mentioned prior art is:
1, because the xDSL user that DSLAM equipment is supported is very many, an equipment can reach thousands of users.According to top method of testing, at first need tester that thousands of test ports are provided, and only tens of the test port quantity of a general tester, this just means need use tens testers simultaneously, and cost is very high.
2, test need be used thousands of xDSL terminals simultaneously, need take the very big test space.
3, test need be between DSLAM equipment and the test terminal, connect thousands of cables respectively between test terminal and the tester, and the test environment building is loaded down with trivial details and make mistakes easily.
The another kind of scheme that prior art is tested on DSLAM equipment, is set up many professional connections (connecting as the PVC permanent virtual circuit) as shown in Figure 3 between an xDSL terminal and uplink port.Then, utilize tester to simulate higher level equipment and xDSL user.The different test ports of tester are connected respectively on the uplink port and xDSL terminal of DSLAM equipment, send the variety of protocol message to the xDSL terminal then.Each bar business that the message that sends need send to respectively between xDSL terminal and the uplink port connects, and with user of a professional connection simulation, simulates the situation that a plurality of users receive protocol massages with this.Receive and observe the protocol massages that xDSL terminal, DSLAM equipment send out simultaneously, and judge the various performances of DSLAM device processes protocol massages in view of the above.
With the top IPTV business of mentioning is example.If test DSLAM equipment is for the IGMP member's report message of xDSL user's transmission and the handling property of IGMP leave message, test environment as shown in Figure 3 be can build, multicast user's (being STB and TV) and higher level equipment (being the video bearer network) simulated with tester.Then, alternately send IGMP member report message and IGMP leave message from the test port that is connected to the xDSL terminal to the xDSL terminal with tester.It should be noted that, many professional connections between an xDSL terminal and uplink port, have been set up this moment, every professional the connection is used to simulate an xDSL user, therefore tester needs to send simultaneously the message that adds/leave a plurality of multicast group, and guarantees that the message that adds each multicast group is carried by professional a connection respectively.Simultaneously, by IGMP member's report message and the IGMP leave message that the test port that is connected to DSLAM equipment upstream Interface receives and record DSLAM equipment sends, observe its quantity and whether equate to the message amount that the xDSL terminal sends with tester.In test process, improve constantly the speed of tester transmission message, till the message amount of message amount that tester receives less than its transmission, then the speed of tester transmission this moment message has just reached the processing limit of DSLAM equipment, and just DSLAM equipment is for the IGMP member's report message of xDSL user's transmission and the handling property of IGMP leave message.
Still there is following shortcoming in this method:
1, the quantity that connects of the business that in general can set up between xDSL terminal and the uplink port on the DSLAM equipment seldom generally is no more than 10, and every professional connection is used to simulate an xDSL user.Therefore, the number of users that adopts this method of testing to simulate can not surpass 10 yet, is difficult to simulate the situation of large user's amount.
2, xDSL terminal is can the loaded service flow limited, so the quantity of the protocol massages that can transmit in the unit interval is also very limited.When carrying out the such test event of certain protocol massages number that DSLAM equipment can handle each second, the processing limit that possible protocol massages flow does not reach DSLAM equipment has as yet just surpassed the bearing capacity of xDSL terminal, causes the actual performance of the system that can't test out.
Summary of the invention
Technical problem to be solved by this invention is: overcome prior art carry out DSLAM when test testing cost height, engaged test space big, be difficult to simulate the deficiency that the large user measures examination etc., a kind of method for detecting digital user line cut-in multiplexing device protocol processing performance is provided, when reducing testing cost, reduce test space demand, also realize that easily the large user measures the simulation test of situation.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
This method for detecting digital user line cut-in multiplexing device protocol processing performance may further comprise the steps:
Make the uplink port of Digital Subscriber Line Access Multiplexer support the agreement that the Digital Subscriber Line port is supported;
Two test ports of tester are connected respectively on two uplink ports of described Digital Subscriber Line Access Multiplexer, and between two uplink ports, set up many professional connections;
Utilize tester to simulate higher level equipment and user, send the variety of protocol message to one of them uplink port, and described variety of protocol message sent to each bar between two uplink ports on professional the connection, the protocol massages that tester returns according to Digital Subscriber Line Access Multiplexer is judged the performance of Digital Subscriber Line Access Multiplexer processing protocol message.
If sending the uplink port of protocol massages is Ethernet interface, so every business VLAN of being connected this port appointment has nothing in common with each other, and the virtual local area network tags of the service message of transmission also has nothing in common with each other; Digital Subscriber Line Access Multiplexer is judged with corresponding business according to the virtual local area network tags of the message that receives and is connected to come bearing message, connects thereby message is sent to different business respectively.
If sending the uplink port of protocol massages is the asynchronous transfer mode mouth, so every business virtual path ident value/VPI value of being connected this port appointment has nothing in common with each other, virtual path ident value/VPI the value of the service message that sends also has nothing in common with each other, Digital Subscriber Line Access Multiplexer is judged with corresponding business according to the virtual path ident value/VPI value of the message that receives and is connected to come bearing message, connects thereby message is sent to different business respectively.
The higher level equipment of described tester simulation is the video bearer network equipment, and described user is the multicast user.
Alternately send Internet Group Management Protocol member report message and Internet Group Management Protocol leave message from the test port that is connected to one of them uplink port to Digital Subscriber Line Access Multiplexer with tester, simultaneously, by Internet Group Management Protocol member's report message and the Internet Group Management Protocol leave message that the test port that is connected to another uplink port receives and the record Digital Subscriber Line Access Multiplexer sends, observe its quantity and whether equate to test to the message amount that first uplink port sends with tester.
In test process, improve constantly the speed of tester transmission message, till the message amount of message amount less than its transmission that tester receives, then the speed of tester transmission this moment message has just been reacted Digital Subscriber Line Access Multiplexer for the Internet Group Management Protocol member's report message of Digital Subscriber Line user transmission and the handling property of Internet Group Management Protocol leave message.
Beneficial effect of the present invention is: the present invention relaxs the restriction, and the agreement that the original xDSL port of uplink port support of DSLAM equipment is just supported is connected respectively to two test ports of tester on two uplink ports of DSLAM equipment, tests.Only need a tester can carry out the DSLAM performance test, reduced testing cost, and do not needed a large amount of xDSL terminals and thing followed cable connection work, reduce test space demand, reduce test environment building amount.
Utilize the present invention can finish the simulation that the large user measures situation, the customer volume of simulation can reach the maximum xDSL number of terminals that can support of DSLAM equipment; Can finish the protocol massages test of big flow, test traffic can reach the protocol processes limit of DSLAM equipment.
Description of drawings
Fig. 1 is the networking structure schematic diagram of IPTV business;
Fig. 2 is a prior art Test Networking schematic diagram;
Fig. 3 is the another kind of Test Networking schematic diagram of prior art;
Fig. 4 is a Test Networking schematic diagram of the present invention.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
In general, DSLAM equipment all has a more than uplink port, and can set up the professional connection of a lot of bars between two uplink ports, and quantity surpasses the xDSL terminal quantity that DSLAM equipment is supported.But do not support those agreements and business that the xDSL port is supported owing to have actual application value, uplink port.For example, the user just can not receive STB and TV and watch the IPTV program on the uplink port, because uplink port does not support to connect the IGMP multicast member.The DSLAM equipment of each producer, each model all is different, but has generally all limited uplink port, makes it the agreement of not supporting that the xDSL port is just supported.
The present invention at first makes amendment to the software of DSLAM equipment, makes the same agreement of supporting that original xDSL port is just supported of uplink port of DSLAM equipment, as connecting IGMP multicast member or the like.This point is not difficult, because just supported these agreements in the software of DSLAM equipment originally, just for the consideration to practical situations, regulation has only the support of xDSL port, and uplink port is not supported.Because if the software of DSLAM equipment was not originally supported certain agreement, the xDSL port of DSLAM equipment just can not supported this agreement yet so, so just there is no need to test the DSLAM equipment handling property of agreement hereto yet.
In the variety of protocol processing module of DSLAM device software, can judge the type and the port that receives message of the protocol massages that needs processing, if find that type of message is the message that xDSL user just can send, and the port that receives message is not the xDSL port, will think and make mistakes and message is directly abandoned, disregard.The present invention only need revise this judgement, makes that type of message is the message that xDSL user just can send, and the port that receives message is when being uplink port, and dropping packets does not still give normal process.With the IGMP agreement is example, and amended DSLAM software is when uplink port receives IGMP member's report message, and DSLAM equipment need be handled this message, and whether the user who analyzes this uplink port has the authority of watching this program.If the user has authority, and DSLAM equipment also do not add this program multicast group, then sends the IGMP member's report message that adds this program multicast group to higher level equipment.Simultaneously, if the user has authority, DSLAM equipment can send to this uplink port user with the program data stream of this channel of receiving from upstream plant.
On this basis, the scheme of test is set up many professional connections as shown in Figure 4 between two uplink ports on the DSLAM equipment, then, utilize tester to simulate higher level equipment and xDSL user.Setting up professional the connection is the function that DSLAM equipment oneself just has originally, and the user sets up the professional order that connects by execution just can set up professional connection.Every professional the connection is used to simulate a user, if being used for that uplink port of analog subscriber port is Ethernet interface, so every business VLAN of being connected this end appointment must have nothing in common with each other; If being used for that uplink port of analog subscriber port is the ATM mouth, so every business VPI/VCI of being connected this end appointment must have nothing in common with each other.
Two test ports of tester are connected respectively on two uplink ports of DSLAM equipment and (adopt original tester, as adopt network performance tester devices such as SmartBits, AX/4000), that uplink port to analog subscriber port sends variety of protocol message then.If being used for that uplink port of analog subscriber port is Ethernet interface, the VLAN label of the service message of Fa Songing must have nothing in common with each other so; If being used for that uplink port of analog subscriber port is the ATM mouth, the VPI/VCI of the service message of Fa Songing must have nothing in common with each other so.Because DSLAM equipment is to judge and come bearing message with the professional connection of which bar according to the VLAN label of the message that receives or VPI/VCI, therefore just message can be sent to different business so respectively and connect.The present invention simulates a user with professional a connection, simulates the situation that a plurality of users receive protocol massages with this, receives and observes the protocol massages that DSLAM equipment sends out simultaneously, and judge the various performances of DSLAM device processes protocol massages in view of the above.
With the top IPTV business of mentioning is example.If test DSLAM equipment is for the IGMP member's report message of xDSL user's transmission and the handling property of IGMP leave message, can build test environment as Fig. 4, simulate multicast user's (being STB and TV) and higher level equipment (being the video bearer network) with tester.Then, alternately send IGMP member report message and IGMP leave message from the test port that is connected to one of them uplink port to DSLAM equipment with tester.It should be noted that, many professional connections between two uplink ports, have been set up this moment, every professional the connection is used to simulate an xDSL user, therefore tester needs to send simultaneously the message that adds/leave a plurality of multicast group, and guarantees that the message that adds each multicast group is carried by professional a connection respectively.Simultaneously, by IGMP member's report message and the IGMP leave message that the test port that is connected to another upstream Interface receives and record DSLAM equipment sends, observe its quantity and whether equate to the message amount that first uplink port sends with tester.In test process, improve constantly the speed of tester transmission message, till the message amount of message amount that tester receives less than its transmission, then the speed of tester transmission this moment message has just reached the processing limit of DSLAM equipment, and just DSLAM equipment is for the IGMP member's report message of xDSL user's transmission and the handling property of IGMP leave message.What it should be noted that in test that message that each test port sends adds/leave must be different multicast group, otherwise DSLAM equipment only can send message to tester when receiving the message that first test port sends.
The present invention is owing to only need two test ports, and therefore a tester can satisfy testing requirement, and testing cost is lower.And owing to do not need to use the xDSL terminal, test space demand is not high, only needs simultaneously to connect two test cables, and test environment building amount is also very little.
The designed use of DSLAM equipment uplink port is to converge the professional of all xDSL users and send higher level equipment to, need in the practical application to set up respectively for one or more professional the connection from uplink port to each xDSL terminal, therefore the xDSL terminal quantity of professional number of connection with regard to supporting above DSLAM equipment that uplink port can be set up gone up in design, therefore can simulate the situation of large user's amount fully.Simultaneously, the service traffics bearing capacity of DSLAM equipment uplink port is very high, therefore can finish the protocol massages test of big flow fully.
Those skilled in the art do not break away from essence of the present invention and spirit, can there be the various deformation scheme to realize the present invention, the above only is the preferable feasible embodiment of the present invention, be not so limit to interest field of the present invention, the equivalence that all utilizations specification of the present invention and accompanying drawing content are done changes, and all is contained within the interest field of the present invention.
Claims (6)
1, a kind of method for detecting digital user line cut-in multiplexing device protocol processing performance is characterized in that, may further comprise the steps:
Make the uplink port of Digital Subscriber Line Access Multiplexer support the agreement that the Digital Subscriber Line port is supported;
Two test ports of tester are connected respectively on two uplink ports of described Digital Subscriber Line Access Multiplexer, and between two uplink ports, set up many professional connections;
Utilize tester to simulate higher level equipment and user, send the variety of protocol message to one of them uplink port, and described variety of protocol message sent to each bar between two uplink ports on professional the connection, the protocol massages that tester returns according to Digital Subscriber Line Access Multiplexer is judged the performance of Digital Subscriber Line Access Multiplexer processing protocol message.
2, method for detecting digital user line cut-in multiplexing device protocol processing performance according to claim 1, it is characterized in that: if send the uplink port of protocol massages is Ethernet interface, so every business VLAN of being connected this port appointment has nothing in common with each other, and the virtual local area network tags of the service message of transmission also has nothing in common with each other; Digital Subscriber Line Access Multiplexer is judged with corresponding business according to the virtual local area network tags of the message that receives and is connected to come bearing message, connects thereby message is sent to different business respectively.
3, method for detecting digital user line cut-in multiplexing device protocol processing performance according to claim 1, it is characterized in that: if send the uplink port of protocol massages is the asynchronous transfer mode mouth, so every business virtual path ident value/VPI value of being connected this port appointment has nothing in common with each other, virtual path ident value/VPI the value of the service message that sends also has nothing in common with each other, Digital Subscriber Line Access Multiplexer is judged with corresponding business according to the virtual path ident value/VPI value of the message that receives and is connected to come bearing message, connects thereby message is sent to different business respectively.
4, according to claim 1,2 or 3 described method for detecting digital user line cut-in multiplexing device protocol processing performance, it is characterized in that: the higher level equipment of described tester simulation is the video bearer network equipment, and described user is the multicast user.
5, method for detecting digital user line cut-in multiplexing device protocol processing performance according to claim 4, it is characterized in that: alternately send Internet Group Management Protocol member report message and Internet Group Management Protocol leave message from the test port that is connected to one of them uplink port to Digital Subscriber Line Access Multiplexer with tester, simultaneously, by Internet Group Management Protocol member's report message and the Internet Group Management Protocol leave message that the test port that is connected to another uplink port receives and the record Digital Subscriber Line Access Multiplexer sends, observe its quantity and whether equate to test to the message amount that first uplink port sends with tester.
6, method for detecting digital user line cut-in multiplexing device protocol processing performance according to claim 5, it is characterized in that: in test process, improve constantly the speed of tester transmission message, till the message amount of message amount less than its transmission that tester receives, then the speed of tester transmission this moment message has just been reacted Digital Subscriber Line Access Multiplexer for the Internet Group Management Protocol member's report message of Digital Subscriber Line user transmission and the handling property of Internet Group Management Protocol leave message.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512717A (en) * | 2002-12-28 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Network test equipment system and method |
| CN1538671A (en) * | 2003-04-14 | 2004-10-20 | 华为技术有限公司 | Digital user line broad band business testing method |
| WO2005079106A1 (en) * | 2004-02-06 | 2005-08-25 | Tyco Electronics Raychem Sa | Connection architecture for xdsl broaband networks |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512717A (en) * | 2002-12-28 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Network test equipment system and method |
| CN1538671A (en) * | 2003-04-14 | 2004-10-20 | 华为技术有限公司 | Digital user line broad band business testing method |
| WO2005079106A1 (en) * | 2004-02-06 | 2005-08-25 | Tyco Electronics Raychem Sa | Connection architecture for xdsl broaband networks |
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