What method are you using to send the packets? What is the performance on
your machine of the sendcap and tg programs, provided in the WinPcap
developer's pack?

Loris

----- Original Message ----- 
From: "Areg Alimian" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, August 11, 2003 5:12 AM
Subject: [WinPcap-users] Limitation with Transmitting frames using WinPcap


I'm using npf.sys to send ethernet II frames out ethernet NIC.  I did
some extensive measurements with the transmission rate and it appears
that the maximum frame rate I can get with 64 byte frames is ~600 frames
per second.

Increasing the frame size to 1024 Bytes also allows my to send about
500+ frames per second.



Is this a limitation of the NPF driver?  If I increase the driver buffer
size for queueing frames, would it affect the rates?

The measurements were taken on a 1.6Mhz Laptop running Win2K with 500Mb
of RAM.



Any input would be much appreciated.



-Areg Alimian




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