CN105099813B - Data verification method and device based on ethernet test instrument - Google Patents
Data verification method and device based on ethernet test instrument Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
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Abstract
The invention proposes a kind of data verification method and device based on ethernet test instrument, should data verification method based on ethernet test instrument comprise determining that the type of test frame that user sends；According to the type of test frame, data verification method corresponding with the type of test frame is selected to verify test frame.The present invention passes through the type for the test frame for determining that user sends, data verification method corresponding with the type of test frame is selected to verify test frame, realize the type of the test frame according to required transmission, dynamic sets the strategy of method of calibration, so as to realize full packet verification to any ethernet frame.
Description
Technical field
The present invention relates to data processing fields, it particularly relates to a kind of data check side based on ethernet test instrument
Method and device.
Background technique
Ethernet test instrument be it is a kind of be injected into equipment under test for generating ethernet network flow, and by analysis from quilt
The Ethernet that measurement equipment returns obtains the special test equipment of equipment under test information.
Currently, in the use process of ethernet test instrument, it is sometimes desirable to carry out entire test frame and verify, for detecting
Whether ethernet frame in the transmission process of test environment (especially 2 layers of environment) by being changed.The method of verification can be random
Selection, such as double byte used by IP header check negate addition or CRC check.
Fig. 1 shows the whole realization method for wrapping verification full in the case where tape test domain, is exactly the first character from packet
Section starts, before calculating test domain always, i.e., 101 and 102 part in figure, then the check value (verification being calculated
With) addition in test domain 103 104 position, recalculated when receiving test frame the check value that full packet verifies and with
Check value comparison in test domain, judges whether information is changed.
This method has a problem, if being exactly to need to calculate packet content comprising TCP, ICMP etc. in test bag to verify
The agreement of value, the cycle calculations situation that just will appear check value lead to not realize the full packet verification on conventional meaning.It is assisted with TCP
For view, in order to illustrate the problem, as shown in Fig. 2, the packet header of test bag is subdivided into layer 2-3 packet header 201 and the packet header TCP
202, Transmission Control Protocol requires to carry out TCP packet full packet verification, and range is verified as shown in 208, and dynamic is needed to calculate TCP check value,
And it is filled into 205 positions in TCP header.Since conventional full packet check value is to calculate from the first character section of packet to test domain
A byte before beginning, once so TCP check value changes, the full packet check value in test domain is also changed correspondingly, and then TCP
Check value needs to change again, then full packet check value is caused to change, repeatedly.For clear explanation, occur herein 2 layers, 3 layers
Corresponding to the data link layer and network layer in OSI7 layer model.
In order to solve the above-mentioned technical problem, there are two types of solutions at present.
The scheme of the prior art one:
As shown in figure 3, ethernet frame itself defines FCS check value, which is in the transmission path by ethernet frame
Each equipment is calculated and is added to last four bytes of ethernet frame, and FCS value essence is a kind of CRC check, data road
Whether after each of diameter equipment receives an ethernet frame, it is correct to first check for FCS value, is considered one if correct
A effective ethernet frame, intermediate equipment can make any change to the frame, then recalculate FCS value, and addition arrives last four
A byte is simultaneously sent.
Since FCS value is to be recalculated the value by each equipment individual inspiration in data path and be added to postamble, institute
It is also impossible to detected by FCS value even if being changed with ethernet frame.
The scheme of the prior art two:
Whens the upper-layer protocol (such as TCP ICMP) etc. for occurring needing to carry out protocol package full content verification, put
Full packet verification is abandoned, the packet content authentication part in test domain is filled out 0, such whole network packet only needs to verify comprising IP, the school TCP
It tests, is not in the case where needing cycle calculations.
The shortcomings that this technical solution is if the ethernet frame contains upper-layer protocol as similar TCP, due to not having
There is the full packet verification of progress, is (for example target MAC (Media Access Control) address is changed) that can not be detected to certain mistakes.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For the problems in the relevant technologies, the present invention proposes a kind of data verification method and dress based on ethernet test instrument
It sets.
To realize the above-mentioned technical purpose, according to an aspect of the invention, there is provided it is a kind of based on ethernet test instrument
Data verification method.
The data verification method, comprising:
Determine the type for the test frame that user sends；
According to the type of test frame, data verification method corresponding with the type of test frame is selected to carry out school to test frame
It tests.
In addition, in the case where needing to verify the protocol contents in addition to network layer to physical layer of test frame,
Then only 2 layers of information of test frame are verified.
In addition, when not needing the case where verifying to the protocol contents in addition to network layer to physical layer of test frame
Under, then full packet verification is carried out to test frame.
In addition, 2 layers of information of test frame carry out verification include:
The check value for calculating test frame, obtains the first check value；
First check value is added in the test domain of test frame；
The test frame for being added to the first check value is received, and calculates the check value of 2 layers of information of the test frame and wraps school entirely
The check value tested respectively obtains the second check value and third check value；
First check value is compared with the second check value.
In addition, including: to the full packet verification of test frame progress
The check value for calculating test frame, obtains the 4th check value；
4th check value is added in the test domain of test frame；
The test frame for being added to the 4th check value is received, and calculates the check value of 2 layers of information of the test frame and wraps school entirely
The check value tested respectively obtains the 5th check value and the 6th check value；
4th check value is compared with the 6th check value.
In addition, being obtained in a register corresponding with the type of test frame according to the type of the test frame of user's selection
Type and verification coverage area are verified, the verification type and every kind of verification verified to test frame is stored in register
The corresponding verification coverage area of type.
According to another aspect of the present invention, a kind of data calibration device based on ethernet test instrument is provided.
The data calibration device, comprising:
Determining module, the type of the test frame for determining user's transmission；
Correction verification module selects data verification method corresponding with the type of test frame for the type according to test frame
Test frame is verified.
In addition, correction verification module is further used for, when needing in the agreement in addition to network layer to physical layer to test frame
In the case that appearance is verified, then only 2 layers of information of test frame are verified.
In addition, correction verification module is further used for, when not needing the agreement in addition to network layer to physical layer to test frame
In the case that content is verified, then full packet verification is carried out to test frame.
In addition, correction verification module further comprises:
First computational submodule obtains the first check value for calculating the check value of test frame；
First addition submodule, for the first check value to be added in the test domain of test frame；
First receiving submodule, for receiving the test frame for being added to the first check value；
Second computational submodule, for calculating the check value of 2 layers of information of the test frame and the check value of full packet verification, point
The second check value and third check value are not obtained；
First Comparative sub-module, for the first check value to be compared with the second check value.
In addition, correction verification module further comprises:
Third computational submodule obtains the 4th check value for calculating the check value of test frame；
Second addition submodule, for the 4th check value to be added in the test domain of test frame；
Second receiving submodule, for receiving the test frame for being added to the 4th check value；
4th computational submodule, for calculating the check value of 2 layers of information of the test frame and the check value of full packet verification, point
The 5th check value and the 6th check value are not obtained；
Second Comparative sub-module, for the 4th check value to be compared with the 6th check value.
In addition, obtaining module, the type of the test frame for being selected according to user obtains and test frame in a register
The corresponding verification type of type and verification coverage area, are stored with the verification type verified to test frame in register,
And the corresponding verification coverage area of every kind of verification type.
The present invention passes through the type for the test frame for determining that user sends, and selects data corresponding with the type of test frame school
Proved recipe method verifies test frame, realizes the type of the test frame according to required transmission, and dynamic sets the plan of method of calibration
Slightly, verification is wrapped entirely so as to realize to any ethernet frame.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram for wrapping the data frame of verification entirely in the prior art；
Fig. 2 is the structural schematic diagram for wrapping the test frame containing Transmission Control Protocol of verification entirely in the prior art；
Fig. 3 is the structural schematic diagram of the test frame in the prior art for defining FCS verification；
Fig. 4 is the structural schematic diagram of ethernet test frame according to an embodiment of the present invention；
Fig. 5 is the flow chart of the data verification method according to an embodiment of the present invention based on ethernet test instrument；
Fig. 6 is the block diagram of the data verification method device according to an embodiment of the present invention based on ethernet test instrument.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
Fig. 4 is the structural schematic diagram of ethernet test frame according to an embodiment of the present invention.The network packet include: 2 layers of information,
3 layers of information, 4 layers of information and 4 layers of payload.By taking typical TCP/IP network as an example, as shown in figure 4, IP layers have IP verifications, school
It tests range and covers IP head, TCP has TCP check, and verification range covers the entire part of TCP packet, so for such
Network packet, when carrying out full packet verification, the part of missing also only has 2 layers of information.So if test is surrounded by TCP etc. and needs
The case where entire protocol contents being verified, then in the verification that the verification value part of test domain only includes 2 layers of check information
Value (only carries out the verification of 2 layers of information), otherwise verifies with regard to carrying out conventional full packet, and verification range is that packet header adds payload.
According to described above, the embodiment provides a kind of data verification methods based on ethernet test instrument.
As shown in figure 5, the data verification method according to an embodiment of the present invention based on ethernet test instrument includes:
Step S501 determines the type for the test frame that user sends；
Step S503 selects data verification method corresponding with the type of test frame to survey according to the type of test frame
Examination frame is verified.
Wherein, in the case where needing the protocol contents in addition to network layer to physical layer to test frame to verify,
Then only 2 layers of information of test frame are verified, as in test bag contain Transmission Control Protocol the case where.Such situation can be indicated
For the first situation, correspond to the type of the first test frame.
In addition, when not needing the case where verifying to the protocol contents in addition to network layer to physical layer of test frame
Under, then full packet verification is carried out to test frame.Such situation can be marked as second situation, correspond to another inhomogeneity
The test frame of type, table are second of test frame.
Wherein, when the test frame to the first seed type verifies, verification packet is carried out to 2 layers of information of test frame
It includes:
The check value for calculating test frame, obtains the first check value；
First check value is added in the test domain of test frame；
The test frame for being added to the first check value is received, and calculates the check value of 2 layers of information of the test frame and wraps school entirely
The check value tested respectively obtains the second check value and third check value；
First check value is compared with the second check value.
In addition, being carried out when full packet verifies to test frame when the test frame to second of type verifies
Step includes:
The check value for calculating test frame, obtains the 4th check value；
4th check value is added in the test domain of test frame；
The test frame for being added to the 4th check value is received, and calculates the check value of 2 layers of information of the test frame and wraps school entirely
The check value tested respectively obtains the 5th check value and the 6th check value；
4th check value is compared with the 6th check value.
In addition, the type for the test frame that can be selected according to user during determining the type of test frame, is being deposited
Verification type corresponding with the type of test frame and verification coverage area are obtained in device, are stored in the register to test frame
The verification type verified and the corresponding verification coverage area of every kind of verification type.
In order to which technical solution of the present invention is more clearly understood, below with specific embodiment to technology of the invention
Scheme is further elaborated.
Technical solution of the present invention can be realized by the method for soft or hard combination.It to realize the present invention, must be in tester
Complete wraps is defined in hardware system and verifies control register, which includes that the type of verification and each verification type correspond to
Verification coverage area and verification covering range, wherein verification type can be made by the position that is verified to test frame
To distinguish, such as verification only will be carried out to 2 layers of information and be defined as the first kind, corresponding verification coverage area is 2 layers of information
Position or preceding 14 bytes；The full packet verification of progress is defined as Second Type, corresponding verification coverage area is for head and only
Lotus or entire packet.
Specific steps can be implemented as follows:
1. the test ethernet frame type that user sends required for selecting in software interface；
2. software is according to the full packet verification control register of test frame type setting that user selects；
3. hardware calculates check value according to the type of full packet verification control register and is added in test domain；
4. tester can be calculated simultaneously in receive process two kinds of verifications and, one is the verification of 2 layers of information and, one is
It is complete to wrap the verification verified and then select one corresponding with test domain according to the setting in test domain；
5. by step 4 it is counted verification with in test domain verification with compare, come judge ethernet frame whether
It is changed in transmission process.
According to an embodiment of the invention, additionally providing a kind of data calibration device based on ethernet test instrument.
As shown in fig. 6, the data calibration device according to an embodiment of the present invention based on ethernet test instrument includes:
Determining module 61, the type of the test frame for determining user's transmission；
Correction verification module 62 selects data check side corresponding with the type of test frame for the type according to test frame
Method verifies test frame.
In addition, correction verification module 62 is further used for, when needing the agreement in addition to network layer to physical layer to test frame
In the case that content is verified, then only 2 layers of information of test frame are verified.
In addition, correction verification module 62 is further used for, when not needing the association in addition to network layer to physical layer to test frame
In the case that view content is verified, then full packet verification is carried out to test frame.
In addition, correction verification module 62 further comprises:
First computational submodule (not shown) obtains the first check value for calculating the check value of test frame；
First addition submodule (not shown), for the first check value to be added in the test domain of test frame；
First receiving submodule (not shown), for receiving the test frame for being added to the first check value；
Second computational submodule (not shown), what check value and full packet for calculating 2 layers of information of the test frame verified
Check value respectively obtains the second check value and third check value；
First Comparative sub-module (not shown), for the first check value to be compared with the second check value.
In addition, correction verification module 62 further comprises:
Third computational submodule (not shown) obtains the 4th check value for calculating the check value of test frame；
Second addition submodule (not shown), for the 4th check value to be added in the test domain of test frame；
Second receiving submodule (not shown), for receiving the test frame for being added to the 4th check value；
4th computational submodule (not shown), what check value and full packet for calculating 2 layers of information of the test frame verified
Check value respectively obtains the 5th check value and the 6th check value；
Second Comparative sub-module (not shown), for the 4th check value to be compared with the 6th check value.
In addition, the device can also include:
Module (not shown) is obtained, the type of the test frame for selecting according to user is obtained in a register and tested
The corresponding verification type of the type of frame and verification coverage area, are stored with the verification class verified to test frame in register
Type and the corresponding verification coverage area of every kind of verification type.
To sum up, by means of above-mentioned technical proposal of the invention, by determining the type of test frame that user sends, selection with
The corresponding data verification method of the type of test frame verifies test frame, realizes according to the test frame of required transmission
Type, dynamic set the strategy of method of calibration, so as to realize full packet verification to any ethernet frame.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of data verification method based on ethernet test instrument characterized by comprising
Determine the type for the test frame that user sends；
According to the type of the test frame, select data verification method corresponding with the type of the test frame to the test
Frame is verified；
In the case where needing to verify protocol contents of the test frame in addition to network layer to physical layer, then only to institute
2 layers of packet header for stating test frame are verified.
2. the data verification method according to claim 1 based on ethernet test instrument, which is characterized in that when not needing pair
In the case that protocol contents of the test frame in addition to network layer to physical layer are verified, then the test frame is carried out complete
Packet verification；
Wherein, it is described it is full packet verification include: since the first character section of packet calculate to test domain before a byte, then
The check value being calculated adds the filling position in the test domain.
3. the data verification method according to claim 1 based on ethernet test instrument, which is characterized in that described to described
2 layers of packet header of test frame carry out verification
The check value for calculating 2 layers of packet header of test frame when sending, obtains the first check value；
First check value is added in the test domain of the test frame；
The test frame for being added to first check value is received, and calculates the check value in 2 layers of packet header of the test frame and wraps school entirely
The check value tested respectively obtains the second check value and third check value；Wherein, the full packet verification includes: from first of packet
Byte calculates a byte before starting to test domain, and the check value being calculated then is added filling out in the test domain
Fill position；
First check value is compared with second check value.
4. the data verification method according to claim 2 based on ethernet test instrument, which is characterized in that described to described
Test frame carries out full packet verification
The check value for calculating the test frame obtains the 4th check value；
4th check value is added in the test domain of the test frame；
The test frame for being added to the 4th check value is received, and calculates the check value in 2 layers of packet header of the test frame and wraps school entirely
The check value tested respectively obtains the 5th check value and the 6th check value；
4th check value is compared with the 6th check value.
5. the data verification method according to claim 1 based on ethernet test instrument, which is characterized in that further packet
It includes:
According to the type of the test frame of user selection, obtain in a register corresponding with the type of the test frame
Verification type and verification coverage area, be stored with the verification type verified to the test frame in the register, with
And the corresponding verification coverage area of every kind of verification type.
6. a kind of data calibration device based on ethernet test instrument characterized by comprising
Determining module, the type of the test frame for determining user's transmission；
Correction verification module selects data check corresponding with the type of the test frame for the type according to the test frame
Method verifies the test frame；
The correction verification module is further used for, when need to protocol contents of the test frame in addition to network layer to physical layer into
In the case where row verification, then only 2 layers of packet header of the test frame are verified.
7. the data calibration device according to claim 6 based on ethernet test instrument, which is characterized in that the calibration mode
Block is further used for, when not needing the case where verifying to protocol contents of the test frame in addition to network layer to physical layer
Under, then full packet verification is carried out to the test frame；
Wherein, it is described it is full packet verification include: since the first character section of packet calculate to test domain before a byte, then
The check value being calculated adds the filling position in the test domain.
8. the data calibration device according to claim 6 based on ethernet test instrument, which is characterized in that the calibration mode
Block further comprises:
First computational submodule obtains the first check value for calculating the check value of the test frame；
First addition submodule, for first check value to be added in the test domain of the test frame；
First receiving submodule, for receiving the test frame for being added to first check value；
Second computational submodule, for calculating the check value of 2 layers of header packet information of the test frame and the check value of full packet verification, point
The second check value and third check value are not obtained；Wherein, the full packet verification includes: to calculate from the first character section of packet to test
Domain start before a byte, the check value that is calculated then is added the filling position in the test domain；
First Comparative sub-module, for first check value to be compared with second check value.
9. the data calibration device according to claim 7 based on ethernet test instrument, which is characterized in that the calibration mode
Block further comprises:
Third computational submodule obtains the 4th check value for calculating the check value of the test frame；
Second addition submodule, for the 4th check value to be added in the test domain of the test frame；
Second receiving submodule, for receiving the test frame for being added to the 4th check value；
4th computational submodule, for calculating the check value in 2 layers of packet header of the test frame and the check value of full packet verification, respectively
To the 5th check value and the 6th check value；
Second Comparative sub-module, for the 4th check value to be compared with the 6th check value.
10. the data calibration device according to claim 6 based on ethernet test instrument, which is characterized in that further packet
It includes:
Module is obtained, the type of the test frame for selecting according to the user obtains and the test in a register
The corresponding verification type of the type of frame and verification coverage area, are stored in the register and verify to the test frame
Verification type and the corresponding verification coverage area of every kind of verification type.
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