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How to get ethernet packet directly from adaper in labview6.1
hui
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10-04-2002 02:28 PM
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I want to get the ethernet packet directly from adaper directly. Which control or function should I use?
John Lum
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10-05-2002 09:59 PM
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If you really need to work with raw ethernet frames, I think you'll want to turn to something outside of built-in LabVIEW functionality.
One approach would be to purchase or download dedicated packet-capture (aka packet sniffer, network monitor) software that provides a developer API (e.g. a DLL with various packet access/filtering/analysis functions), then access that API from LabVIEW (e.g. by using the Call Library Function Node).
Here's one such piece of software, called WinPCap:
http://winpcap.polito.it/
You didn't give many details about your application.
So, I'm going to get up on my soapbox for a moment and urge you to reconsider whether you really need to go this low-level. I'd suggest carefully defining your goal and making sure you can't a
chieve it with higher-level functions like TCP Read and TCP Write in LabVIEW.
Best Regards,
John Lum
National Instruments
One approach would be to purchase or download dedicated packet-capture (aka packet sniffer, network monitor) software that provides a developer API (e.g. a DLL with various packet access/filtering/analysis functions), then access that API from LabVIEW (e.g. by using the Call Library Function Node).
Here's one such piece of software, called WinPCap:
http://winpcap.polito.it/
You didn't give many details about your application.
So, I'm going to get up on my soapbox for a moment and urge you to reconsider whether you really need to go this low-level. I'd suggest carefully defining your goal and making sure you can't a
chieve it with higher-level functions like TCP Read and TCP Write in LabVIEW.
Best Regards,
John Lum
National Instruments
10-07-2002 10:35 AM
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John,
My project requires the raw ethernet capture and sending because we use our own propritory protocol rather than TCP/IP.
Your answer is exactly what I want. Here is coming two more:
1. Does Ni plan to add capture raw ethernet packet function in further Labview release?
2. Is there any existing VI or function I can download or buy to get the raw ethernet packet instead of building from scrach from .dll lib?
Thanks a lot.
My project requires the raw ethernet capture and sending because we use our own propritory protocol rather than TCP/IP.
Your answer is exactly what I want. Here is coming two more:
1. Does Ni plan to add capture raw ethernet packet function in further Labview release?
2. Is there any existing VI or function I can download or buy to get the raw ethernet packet instead of building from scrach from .dll lib?
Thanks a lot.
John Lum
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10-07-2002 12:52 PM
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Hui,
Answers to your questions:
1. I won't pretend that I know every detail of the LabVIEW product roadmap, but I know enough about the product philosophy that I think it's very unlikely that this would ever be a built-in feature with LabVIEW.
2. Some third-party might have produced such a thing, but I'm not aware of it. I did a search on the Info-LabVIEW archives (another discussion forum for LabVIEW users), and found this, which agrees pretty well with what I've suggested:
http://messages.info-labview.org/2002/06/04/03.html
You might try browsing or searching through the third-party Alliance integrators on the NI Web site (ni.com/alliance) to see if anyone has existing products that are similar to what you need.
Regards,
John
Answers to your questions:
1. I won't pretend that I know every detail of the LabVIEW product roadmap, but I know enough about the product philosophy that I think it's very unlikely that this would ever be a built-in feature with LabVIEW.
2. Some third-party might have produced such a thing, but I'm not aware of it. I did a search on the Info-LabVIEW archives (another discussion forum for LabVIEW users), and found this, which agrees pretty well with what I've suggested:
http://messages.info-labview.org/2002/06/04/03.html
You might try browsing or searching through the third-party Alliance integrators on the NI Web site (ni.com/alliance) to see if anyone has existing products that are similar to what you need.
Regards,
John
