[Winpcap-users] winpcap on vista.

[Gianluca Varenni]

Packets can be dropped for a number of reasons, including
- excessive CPU load on the machine
- cheap network cards and high traffic rates
- WinPcap based applications not able to keep up with the traffic rate.

What is the traffic rate we are talking about?
Are you dumping the packets to disk in your application?

Have a nice day
GV


From: Amir Aharon 
Sent: Thursday, February 25, 2010 11:28 AM
To: winpcap-users at winpcap.org 
Subject: Re: [Winpcap-users] winpcap on vista.


the phenomenon I see is that while browsing local file system, my application misses packets that should have been delivered, meaning per each command frame that is being send a response will be return but sometimes response is being dropped. I don't mean that the application stopped to receive anymore packets from that point .

 

I have capture the traffic using WireShark and verified the responses are not there also.

 

it happens on 3 different vista platform, we have one vista system that seems to works fine - we are searching for the differences.

 

this happens in WinPcap 4.0.2 and 4.1.1

 

thanks.

Amir.

 

 

From: winpcap-users-bounces at winpcap.org [mailto:winpcap-users-bounces at winpcap.org] On Behalf Of Gianluca Varenni
Sent: Thursday, February 25, 2010 6:43 PM
To: winpcap-users at winpcap.org
Subject: Re: [Winpcap-users] winpcap on vista.

 

There are no known issues about it.

 

Are you saying that you have a Vista machine, you are sending ethernet frames thru winpcap, and when you browse the local file system on that machine, your transmit application stops sending packets or packets are not transmitted properly?

 

Does it happen on one single machine or on different machines (all running Vista)?

 

Which version of WinPcap are you using?

 

Have a nice day

GV

 

From: Amir Aharon 

Sent: Thursday, February 25, 2010 4:16 AM

To: winpcap-users at winpcap.org 

Subject: [Winpcap-users] winpcap on vista.

 

 

Hi,

We uses WinPcap on windows(XP, vista & 7) for transmitting raw Ethernet frames to control devices on a local closed network.

However we have notice that RX raw Ethernet frames are being dropped, on vista only, when we browse the local file system.

 

Are there any known issues regarding this mysterious phenomenon?

 

thanks, 

Amir.

 


     Amir Aharon
      SW Team Leader 

      Waves Audio Ltd
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      Fax: +972 3 6084056
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