> -----Original Message-----
> From: Weijie Zhang [mailto:community-noreply@qnx.com]
> Sent: March-18-09 12:58 PM
> To: general-networking
> Subject: RE: Odd TCP/IP transmission
> 
> Is it running on vmware (vmnet bridging through one nic)? I had noticed
> similar traffic I suspected the vmware driver.

I wish it was but no it`s a real machine and the network driver ( e1000 ) is setup to run at priority 100, which is the 
highest priority of all threads/processes aside qconn.

This driver e1000, actually intel Pro 1000 PCIe has been giving us grief for a long time.  What worries me is that in 
the sample I send the packet going to 10.121.207.4 are the first packets going to it in, how can it loose a packets (out
 of 4)after the communication has been idle for close to 400ms.  In the 10 seconds prior to the "incident" there was 
only 90 packets logged.  

The log I sent were taken out of a bigger file.  I have 10 seconds of data before that, in which I  can`t see any 
communication between .101 and .4 so I can`t see sequence 4294961152.

That begin said, this problem happened after a system provide by a third party was send changed from a XP box to a Vista
 box.  


> 
> Thanks
> Weijie
> 
> 
> -----Original Message-----
> From: Sean Boudreau [mailto:community-noreply@qnx.com]
> Sent: March 18, 2009 12:13 PM
> To: general-networking
> Subject: Re: Odd TCP/IP transmission
> 
> On Wed, Mar 18, 2009 at 11:29:47AM -0400, Mario Charest wrote:
> > Find attached a wireshark capture session.  Seems like QNX (6.3.2) is
> doing something odd, the same ACK is send 5 times. Packet 9 being the
> first one.
> >
> > Is this normal?
> 
> It's normal if we lost a packet.  Looks like the other end sent
> a bunch of data at sequence 4294961152 and kept going but we lost
> the one at 4294961152 so we continue to ack the last byte we got
> which eventually causes the other end to back up and resend.
> 
> -seanb
> 
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