CN105897494A - Testing method of network transmission rate - Google Patents
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- CN105897494A CN105897494A CN201510037437.7A CN201510037437A CN105897494A CN 105897494 A CN105897494 A CN 105897494A CN 201510037437 A CN201510037437 A CN 201510037437A CN 105897494 A CN105897494 A CN 105897494A
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Abstract
The present invention provides a testing method of a network transmission rate. The method is applied to a network transmission detection system which comprises a computer and at least one network device to be tested. The computer and the network device to be tested are connected through a control line. The network device to be tested is at least provided with a first interface to be tested and a second interface to be tested. The external parts of the interfaces to be tested are connected through a back connection line. According to the method, the computer executes a step of cleaning the package number of the package counter in each interface to be tested, a step of setting the interface to be tested as a same virtual area network, a step of allowing the network device to be tested to orderly send a packet with a fixed length from each interface to be tested and starting to transmit packets in a flooding transmission mode, a step of reading the packet number of each interface to be tested, and a step of calculating the change of the packet number in a predetermined time, and thus obtaining the network transmission rate of each interface to be tested.
Description
Technical field
The present invention relates to the method for testing of a kind of network transmission speed, espespecially a kind of method of testing is to fill at a network under test
Put after reaching circuit full load condition, start this network under test device is carried out the test of network transmission speed, with more smart
The network transmission speed really being screened out on it between each described interface to be measured whether conformance with standard, and then avoid network under test
By detection, in the test process of user, asking of below standard standard is but there is in device in the case of circuit does not reaches and is fully loaded with
Topic.
Background technology
Pressing, in recent years, along with significantly improving of the network communications technology, the network service such as wideband network and fiber optic network sets
Standby be the most gradually popularized in daily life and work, and along with user for data transmission efficiency requirement by
Gradually improving, dealer researches and develops or improves network communication device miscellaneous (such as: router, network the most painstakingly
Exchanger, the webserver etc.), make each described network communication device and relevant peripheral product more optimize, to meet
The market demand.It is said that in general, before described network communication device is pushed out of market, described network must first be led to by dealer
T unit carries out test functionally, to guarantee that described network communication device has good transmission usefulness, but, dealer
Find that described network communication device, when circuit does not reaches fully loaded, passes through test, at user to respectively even if original
When described network communication device carries out selftest, but may find that the problem not reaching testing standard, accordingly, invention
People thinks, makes described network communication device after reaching the state that circuit is fully loaded, proceeds by the survey of network transmission speed
Examination, inherently makes test result the most accurate.
Looking into, existing test mode mainly can generally be divided into following four kinds:
One, loopback test (Loopback Test):
Loopback test is the central processing unit (CPU) making the network communication device communication interface to this network communication device
Send the test packets of specific format, treat that this test packets is recycled to this central authorities by the communication interface of this network communication device
After processor, this central processing unit i.e. carries out content verification to this test packets.Look into, in this kind of loopback test mode,
This central processing unit is in addition to the transmission path that must check this test packets, it is necessary to inspection passes from this network communication device
Give this test packets to the direct memory access (DMA) (Direct Memory Access is called for short DMA) of this central processing unit
Transfer rate the most normal？Accordingly, the major defect of this kind of loopback test mode is that this central processing unit on the one hand must
This test packets must be produced, on the other hand this test packets must also be carried out content verification, therefore, easily cause line
Road bottleneck, the transfer rate causing this test packets is slower or unstable, and then makes test result incorrect.
Two, saturation testing (Saturation Test):
Saturation testing is to make whole communication interfaces of a network communication device be at same virtual network (Virtual
Local Area Network, is called for short VLAN), then, the central processing unit (CPU) making this network communication device is right
The communication interface of this network communication device sends different size of test packets, and makes this network communication device broadcast
(broadcast) described test packets, finally, treats that this network communication device reaches under the situation that circuit is fully loaded, these central authorities
Processor begins to carry out described test packets first check, and during waiting a predetermined detection after, reexamine at this
The test packets of mistake whether is received in during predetermined detection？Looking into, in this kind of saturation testing mode, these central authorities process
Transmission path and the circuit of this test packets mainly checked by device, and its advantage is to make network system can bear more aforementioned loopback
Test higher load, therefore, relatively have the ability to detect the mistake that can start to occur under high-speed transfer state and problem,
But, its shortcoming is because fleeing the various test packets varied in size in network system, causes cannot or being difficult to accurately
Verify the correct transfer rate of each described communication interface, and make test result the most preferable.
Three, snakelike test (Snake Test):
Snakelike test is to make whole communication interfaces of a network communication device distribute in a pair wise manner different virtual
Network (VLAN), and the most sequentially travelling across VLAN connects and is concatenated into snakelike, to make the central authorities of this network communication device
Processor sends test packets to first communication interface of this network communication device, and makes this test packets can sequentially warp
By follow-up communication interface, it is transferred to last communication interface, due to, in this kind of snakelike test mode, still
So need to be produced this test packets by the central processing unit of this network communication device, to carry out fully loaded detection, therefore, Chang Hui
Because the function of the central processing unit of this network communication device itself limits, it is impossible to producing enough test packets, cause cannot
The circuit making this network communication device reaches fully loaded, and occurs impotentia to detect under high-speed transfer state and can start to occur
Mistake and problem.
Four, external testing (External Test):
External testing is under the network environment being same as aforementioned snakelike test, by an external dedicated detection board, right
This network communication device sends test packets, is fully loaded with though this method of testing can make this network communication device reach circuit,
And it is able to verify that the function of this virtual network, but, owing to the cost of this external dedicated detection board is the highest, and
Manpower and time cost must be paid, it is carried out periodic maintenance and maintenance, therefore and does not meets economic benefit.
Therefore, how to improve for existing test mode, to using general computer, network service can be made
Device does not only reach the state that circuit is fully loaded, and then can be screened out more accurately on network communication device not reaching network transmission
The communication interface of speed standard, becomes the present invention and desires most ardently the major issue of solution at this.
Summary of the invention
Because existing test mode has aforesaid problem, inventor is by feat of practical experience for many years, and warp
After crossing experiment repeatedly and test, finally design the method for testing of a kind of network transmission speed of the present invention, to energy
By the present invention, it is effectively improved one or more disappearances aforesaid.
One purpose of the present invention, is to provide the method for testing of a kind of network transmission speed, and the method is that application is to a network
Transmission detecting system, this detecting system includes a computer and at least one network under test device (such as: switch hub),
Being to be connected with each other by a control line between this computer and this network under test device, this network under test device is at least provided with one
One interface to be measured and one second interface to be measured, the outside of this first interface to be measured and this second interface to be measured is by one time
Wiring or tool (loopback cable or fixture), interconnect, to make this first interface to be measured send out
The package gone out, can be sent to this second interface to be measured, then the inside via this network under test device by this tieback line,
It is transmitted back to this first interface to be measured, and repeatedly performs the transmission action of package；The method is to make this computer perform following step
Rapid: first, remove the data of a package enumerator on each described interface to be measured；By this first interface to be measured and this
Two interface settings to be measured are same virtual region network (VLAN)；Make this network under test device from each described to be measured
Interface sequentially sends out the package of regular length, and starts, in the way of flooding transmission (flooding), to perform an envelope
Bag transmission action；This means, the package that this first interface to be measured sends, this second interface to be measured after receiving, because of
The two is in identical virtual region network, this package can via the inside of this network under test device, be forwarded to this first
Interface to be measured, more sequentially via this first interface to be measured, send to this second interface to be measured, vice versa；So,
Repeatedly perform aforementioned transmission action, this first interface to be measured and the second interface to be measured can be made to progressively reach what circuit was fully loaded with
State；After the state that circuit to be achieved is fully loaded, in testing time for the first time, read respectively this first interface to be measured and
Package quantity in the package enumerator of this second interface to be measured, and each described package quantity record respectively that will be read
It is one first initial number and one second initial number；Wait a scheduled period；Then at a second time testing time, point
Do not read the package quantity in the package enumerator of this first interface to be measured and this second interface to be measured, and will be read
Each described package quantity is recorded as one first final amt and one second final amt respectively；Complete aforementioned twice test
After, described interface to be measured is removed from virtual region network, makes this network under test device stop flooding transmission；Calculate
Within this scheduled period this first interface to be measured and the second interface to be measured transfer rate (that is, package transmission amount per second,
(first final amt the-the first initial number)/scheduled period, and (second final amt the-the second initial number)
/ the scheduled period), and judge whether this first interface to be measured and the second interface to be measured can be to be measured because of this most accurately
Circuit, seasonal pulse agitator or the instability of other element in network equipment, and occur packet transmission rates inconsistent
Problem.
Another object of the present invention, is to provide the method for testing of another kind of network transmission speed, and the method is that application is to one
Network transmission detecting system, this detecting system includes a computer and at least one network under test device, and this computer is to be measured with this
Being to be connected with each other by a control line between network equipment, this network under test device is at least provided with one first interface to be measured and
Second interface to be measured, this first interface to be measured and this second interface to be measured are in an interface group to be measured, and this is first to be measured
The outside of interface and this second interface to be measured is to load one first tieback tool and one second tieback tool respectively, should with order
The package that first interface to be measured sends, can be transmitted back to this first interface to be measured by this first tieback tool, then via
The inside of this network under test device, is sent to this second interface to be measured, then, the package that this second interface to be measured sends,
This second interface to be measured, then the inside via this network under test device can be transmitted back to by this second tieback tool, pass
Deliver to this first interface to be measured, and repeatedly perform the transmission action of package；The method is to make this computer perform the following step:
First, the data of a package enumerator on this first interface to be measured are removed；By this first interface to be measured and this second treat
Surveying interface setting is same virtual region network；This network under test device is made sequentially to send out from each described interface to be measured
The package of regular length, and start, in the way of flooding transmission, to perform package transmission action；Circuit to be achieved is fully loaded with
After state, in testing time first time, read the package quantity in the package enumerator of this first interface to be measured, and
This package quantity read is recorded as one first initial number；Wait a scheduled period；Then at a second time test
Time, read the package quantity in the package enumerator of this first interface to be measured, and this package quantity note that will be read
Record is one first final amt；And according to this first initial number and the first final amt, calculate within this scheduled period
The network transmission speed of this first interface to be measured.
So, owing to the method for testing of the present invention is a network under test device after reaching the state that circuit is fully loaded, just make
This network under test device carries out the test of network transmission speed, therefore, the method for testing of the present invention can more accurately screening
Go out the network under test device of the below standard standard of network transmission speed, to avoid network under test device in the situation of circuit underload
Under by detection, but have the problem of below standard standard to produce in the test process of user；Additionally, the test of the present invention
Method is to be transmitted and forwarding behavior with less package number by flooding mode, to alleviate the negative of central processing unit
Carry, and can the most stably reach the state that circuit is fully loaded.
For just, the purpose of the present invention, step and effect thereof can be done and further recognize and understand by your juror,
Hereby coordinate graphic for embodiment, describe in detail as follows.
Accompanying drawing explanation
Fig. 1 is the flow chart of method of testing of the present invention；
Fig. 2 is that the first preferred embodiment of method of testing of the present invention loads back wiring schematic diagram；
Fig. 3 is that other preferred embodiments of method of testing of the present invention load tieback tool schematic diagram；And
Fig. 4 be method of testing of the present invention other preferred embodiments in schematic flow sheet.
Symbol description:
Network under test device ... 3
Interface group to be measured ... 31
First interface to be measured ... 311
Second interface to be measured ... 313
Tieback line ... 33
First tieback tool ... 35
Second tieback tool ... 37
Detailed description of the invention
The present invention is the method for testing of a kind of network transmission speed, and the method is to apply to a network transmission detecting system,
Referring to shown in Fig. 1 and 2, in first preferred embodiment of the present invention, this detecting system includes a computer and at least
One network under test device 3, in this preferred embodiment, this network under test device 3 is a switch hub, this electricity
Being to be connected with each other by a control line between brain and this network under test device 3, this network under test device 3 is at least provided with one
One interface 311 to be measured and one second interface 313 to be measured, in this preferred embodiment, this first interface 311 to be measured and
This second interface 313 to be measured is in an interface group 31 to be measured, and the outside of this interface group 31 to be measured is by a tieback
Line 33 (loopback cable), interconnects；And this method of testing makes this computer perform the following step:
(201) refer to Fig. 1, shown in 2, first, first remove the package counting on this first interface 311 to be measured
The package incremental data of device；
(202) refer to Fig. 1 again, shown in 2, this first interface 311 to be measured and this second interface 313 to be measured are set
It is set to same virtual region network (Virtual Local Area Network is called for short VLAN)；
(203) refer to Fig. 1 again, shown in 2, (first treats from each described interface to be measured to make this network under test device 3
Survey interface the 311, second interface 313 to be measured) sequentially send out the package of regular length, and start to flood transmission
(flooding) mode, performs package transmission action；This means, the package that this first interface 311 to be measured sends,
After being received by this second interface 313 to be measured, because of both be in identical virtual region network, this package can be treated via this
Survey the inside of network equipment 3, be forwarded to this first interface 311 to be measured, more sequentially via this first interface 311 to be measured,
Sending to this second interface 313 to be measured, vice versa；So, repeatedly perform aforesaid transmission action, can be made this
First interface 311 to be measured and the second interface 313 to be measured progressively reach the state that circuit is fully loaded；
(204) Fig. 1 is referred to again, shown in 2, it is judged that whether circuit reaches fully loaded state, if so, enters step
(205)；If it is not, then return to step (203) to continue executing with aforesaid package transmission action, until circuit reaches full
The state carried；
(205) refer to Fig. 1 again, shown in 2, after the state that circuit to be achieved is fully loaded, in testing time for the first time,
Read the package quantity in the package enumerator of this first interface 311 to be measured, and this package quantity record that will be read
It it is one first initial number；
(206) refer to Fig. 1 again, shown in 2, wait a scheduled period；
(207) refer to Fig. 1 again, shown in 2, then at a second time testing time, read this first interface 311 to be measured
Package enumerator in package quantity, and this package quantity read is recorded as one first final amt；And
(208) refer to Fig. 1 again, shown in 2, according to this first initial number and the first final amt, calculate at this
(that is, package transmission amount per second, (first for the network transmission speed of this first interface 311 to be measured in scheduled period
Whole quantity the-the first initial number)/(for the second time testing time-for the first time testing time)).
So, owing to the method for testing of the present invention is a network under test device 3 after reaching the state that circuit is fully loaded,
This network under test device 3 is made to carry out the test of network transmission speed, therefore, the method for testing of the present invention can be more accurately
It is screened out the network under test device of the below standard standard of network transmission speed, to avoid network under test device at circuit underload
In the case of by detection, but have the problem of below standard standard to produce in the test process of user；Additionally, the present invention
Method of testing is to be transmitted and forwarding behavior with less package number by flooding mode, to alleviate central processing unit
Load, and can the most stably reach the state that circuit is fully loaded.
Also, in other preferred embodiments of the present invention, refer to shown in Fig. 1,2,4, this method of testing is reaching
After the state that circuit is fully loaded, also comprise the following steps:
(401) the package incremental data of a package enumerator on this second interface 313 to be measured is removed；
(402), after the state that circuit to be achieved is fully loaded, in this testing time first time, this second interface to be measured is read
Package quantity in the package enumerator of 313, and this package quantity read is recorded as one second initial number；
(403) scheduled period is waited；
(404) then at this second time testing time, the package in the package enumerator of this second interface 313 to be measured is read
Quantity, and this package quantity read is recorded as one second final amt；And
(405) according to this second initial number and the second final amt, calculate within this scheduled period this and second to be measured connect
Network transmission speed between mouth 313.
So, can be by network transmission speed and between this first interface 311 to be measured and this second interface 313 to be measured
The difference of standard value, it may be judged whether have the problem generation that the network transmission speed of interface to be measured is unstable, separately, this standard
Value is that tester restrains a fixed ideal network transmission rate value in advance at ideal transmission profile.
Separately, in another preferred embodiment of the present invention, refer to shown in Fig. 1,2,3, this first interface to be measured
311 and the outside of this second interface 313 to be measured also can load one first tieback tool 35 respectively and one second tieback is controlled
Tool 37 (loopback fixture), then perform the method for testing of the present invention, this network under test device 3 also can be made to reach
The state that circuit is fully loaded, in the case of stating step (203) the most before execution, makes this first interface 311 to be measured
Send package, by this first tieback tool 35, be transmitted back to this first interface 311 to be measured, owing to this first to be measured connects
Mouth 311 and this second interface 313 to be measured are in identical virtual region network, and therefore package treats survey grid via this again
The inside of network device 3, is sent to this second interface 313 to be measured, and then, this second interface 313 to be measured sends package,
By this second tieback tool 37, it is transmitted back to this second interface 313 to be measured, then via in this network under test device 3
Portion, is sent to this first interface 311 to be measured, and repeatedly performs the transmission action of package, so, also can make this first
Interface 311 to be measured and the second interface 313 to be measured progressively reach the state that circuit is fully loaded, and user can be according to the most both
Some tieback lines 33 or described tieback tool (first tieback tool the 35, second tieback tool 37), select to set
Put back into the mode connect, extra special-thread or tool need not be used in order to carry out network test.
Separately, in another preferred embodiment of the present invention, referring to shown in Fig. 1,2,3 again, dealer also can complete
After the step of the final amt reading each described package, in the case of stating step (208) before execution, carry out simultaneously
The following step: by described interface to be measured (first interface the 311, second interface 313 to be measured to be measured) from virtual region net
Network removes, and makes this network under test device 3 stop flooding transmission.To check whether each described package enumerator has not
Good package produces, and then judges that this first interface 311 to be measured and this second interface 313 to be measured whether can accurately
Because of the circuit in this network under test device 3, seasonal pulse agitator or the instability of other element, and there is package transmission speed
The problem that rate is inconsistent.
Separately, in the another embodiment of the present invention, refer to Fig. 1, shown in 2 and 3, this network under test device
3 are additionally provided with multiple first interface 311 to be measured and multiple second interface 313 to be measured, each described first interface 311 to be measured
With corresponding each described second interface 313 to be measured in an interface group 31 to be measured, and each described first interface 311 to be measured
And the outside of each described second interface 313 to be measured is to load this tieback line 33 or described tieback tool (the first tieback is controlled
Tool the 35, second tieback tool 37), performing each described first interface 311 to be measured and corresponding each described the
When two interfaces 313 to be measured are set as the step of same virtual region network, this method of testing also comprises the following steps:
Each described first interface 311 to be measured of different interface group 31 correspondences to be measured and corresponding each described second to be measured are connect
Mouth 313 is set as different virtual region networks.
Press, the above, only presently preferred embodiments of the present invention, but, the interest field that the present invention is advocated, not
Be confined to this, press, those skilled in the art, according to the technology contents that disclosed herein, can think easily and equivalence
Change, all should belong to the protection category without departing from the present invention.
Claims (8)
1. a method of testing for network transmission speed, the method is to apply to a network transmission detecting system, and it is special
Levying and be, this detecting system includes a computer and at least one network under test device, between this computer and this network under test device
Being to be connected with each other by a control line, this network under test device connects at least provided with one first interface to be measured and one second are to be measured
Mouthful, this first interface to be measured and this second interface to be measured are in an interface group to be measured, and the outside of this interface group to be measured is
Interconnected by a tieback line, with the package making this first interface to be measured send, can by this tieback line,
It is sent to this second interface to be measured, then the inside via this network under test device, is transmitted back to this first interface to be measured, and
Repeatedly perform the transmission action of package；The method is to make this computer perform the following step:
First, the data of a package enumerator on this first interface to be measured are removed；
It is same virtual region network by this first interface to be measured and this second interface setting to be measured；
Make this network under test device sequentially send out the package of regular length from each described interface to be measured, and start with flooding
The mode of transmission, performs package transmission action；
After the state that circuit to be achieved is fully loaded, in testing time first time, read the package meter of this first interface to be measured
Package quantity in number device, and this package quantity read is recorded as one first initial number；
Wait a scheduled period；
Then at a second time testing time, read the package quantity in the package enumerator of this first interface to be measured, and will
This package quantity read is recorded as one first final amt；And
According to this first initial number and the first final amt, calculate the net of this first interface to be measured within this scheduled period
Network transfer rate.
2. method of testing as claimed in claim 1, it is characterised in that also comprise the following steps:
Remove the data of a package enumerator on this second interface to be measured；
In this testing time first time, read the package quantity in the package enumerator of this second interface to be measured, and by institute
This package quantity read is recorded as one second initial number；
Then at this second time testing time, read the package quantity in the package enumerator of this second interface to be measured, and will
This package quantity read is recorded as one second final amt；And
According to this second initial number and the second final amt, calculate the net of this second interface to be measured within this scheduled period
Network transfer rate.
3. method of testing as claimed in claim 1 or 2, it is characterised in that this network under test device is additionally provided with many
Individual first interface to be measured and multiple second interface to be measured, each described first interface to be measured is treated with corresponding each described second
Surveying interface is in an interface group to be measured, and the outside of each described interface group to be measured is by this tieback line, interconnects mutually
Being connected together, this method of testing also comprises the following steps:
It is not by each described first interface to be measured corresponding for different interface group to be measured and each described second interface setting to be measured
Same virtual region network.
4. method of testing as claimed in claim 3, it is characterised in that read the final of each described package completing
After the step of quantity, this method of testing also comprises the following steps: to remove described interface to be measured from virtual region network,
And make this network under test device stop flooding transmission.
5. a method of testing for network transmission speed, the method is to apply to a network transmission detecting system, and it is special
Levying and be, this detecting system includes a computer and at least one network under test device, between this computer and this network under test device
Being to be connected with each other by a control line, this network under test device connects at least provided with one first interface to be measured and one second are to be measured
Mouthful, this first interface to be measured and this second interface to be measured are in an interface group to be measured, and this first interface to be measured and this
The outside of two interfaces to be measured is to load one first tieback tool and one second tieback tool respectively, to make this first to be measured connect
The package that mouth sends, can be transmitted back to this first interface to be measured by this first tieback tool, then via this network under test
The inside of device, is sent to this second interface to be measured, then, the package that this second interface to be measured sends, can be by being somebody's turn to do
Second tieback tool, is transmitted back to this second interface to be measured, then the inside via this network under test device, be sent to this
One interface to be measured, and repeatedly perform the transmission action of package；The method is to make this computer perform the following step:
First, the data of a package enumerator on this first interface to be measured are removed；
It is same virtual region network by this first interface to be measured and this second interface setting to be measured；
Make this network under test device sequentially send out the package of regular length from each described interface to be measured, and start with flooding
The mode of transmission, performs package transmission action；
After the state that circuit to be achieved is fully loaded, in testing time first time, read the package meter of this first interface to be measured
Package quantity in number device, and this package quantity read is recorded as one first initial number；
Wait a scheduled period；
Then at a second time testing time, read the package quantity in the package enumerator of this first interface to be measured, and will
This package quantity read is recorded as one first final amt；And
According to this first initial number and the first final amt, calculate the net of this first interface to be measured within this scheduled period
Network transfer rate.
6. method of testing as claimed in claim 5, it is characterised in that also comprise the following steps:
Remove the data of a package enumerator on this second interface to be measured；
In this testing time first time, read the package quantity in the package enumerator of this second interface to be measured, and by institute
This package quantity read is recorded as one second initial number；
Then at this second time testing time, read the package quantity in the package enumerator of this second interface to be measured, and will
This package quantity read is recorded as one second final amt；And
According to this second initial number and the second final amt, calculate the net of this second interface to be measured within this scheduled period
Network transfer rate.
7. the method for testing as described in claim 5 or 6, it is characterised in that this network under test device is additionally provided with many
Individual first interface to be measured and multiple second interface to be measured, each described first interface to be measured is treated with corresponding each described second
Surveying interface is in an interface group to be measured, and the outside of each described first interface to be measured and each described second interface to be measured is point
Not loading this first tieback tool and this second tieback tool, this method of testing also comprises the following steps:
It is not by each described first interface to be measured corresponding for different interface group to be measured and each described second interface setting to be measured
Same virtual region network.
8. method of testing as claimed in claim 7, it is characterised in that read the final of each described package completing
After the step of quantity, this method of testing also comprises the following steps: to remove described interface to be measured from virtual region network,
And make this network under test device stop flooding transmission.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120472A (en) * | 2018-07-26 | 2019-01-01 | 新华三信息安全技术有限公司 | A kind of interface rate preparation method and device |
| CN109962824A (en) * | 2017-12-26 | 2019-07-02 | 新汉股份有限公司 | High-speed network appliance and its self test method |
| CN112422355A (en) * | 2019-08-21 | 2021-02-26 | 明泰科技股份有限公司 | Network transmission detection system |
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| CN109120472B (en) * | 2018-07-26 | 2020-11-20 | 新华三信息安全技术有限公司 | Interface rate obtaining method and device |
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| CN112422355B (en) * | 2019-08-21 | 2022-06-28 | 明泰科技股份有限公司 | Network transmission detection system |
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