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To: <cipe-l,AT,inka,DOT,de>
Subject: Re: Fw: Packet waits until another packet arrives before sending
From: "Nick Fisk" <nick.fisk,AT,btinternet,DOT,com>
Date: Tue, 30 Dec 2003 10:12:55 -0000
References: <>

Well its good that somebody else is having a similar problem. I say similar,
since my tunnel is like this right from the start, not just after heavy load

Anyway like you said, lets hope somebody has a solution


----- Original Message -----
From: "Jürgen K. Zick" <juergen.zick,AT,ifa,DOT,uni-kassel,DOT,de>
To: "Nick Fisk" <nick.fisk,AT,btinternet,DOT,com>
Sent: Tuesday, December 30, 2003 8:15 AM
Subject: Re: Fw: Packet waits until another packet arrives before sending

Hi Nick,

well, I have the experience, but not always. It happens when the tunnel was
used for some time with heavy load and then, suddenly, this effect starts.
And even worse, when I try to restart the CIPE service, sometimes the
machine gets a blue screen and reboots ...
Really have no idea how to sort out and to trace the problem down to the
source. But I would think that it might be some queue overflow or packet
sequence number error due to disregarded packets or so.

I tried that on several NT and W2K machines and all show the same behavior.
A normal PING between the tunneled machines is 100% ok, as well as
UDP-packet flow. The problem must be indeed somewhere inside the
encapsulating or de-encapsulating mechanism, I suppose.

Hopefully, somebody with more time and experience in driver writing has the
time to track that down ...

Regards, Jürgen

>Hmmm....looks like this has everybody stumped. I have been doing a bit
>more investigation. It appears that the UDP packets are going both ways
>fine. It looks like it is getting stuck on the part when it comes to
>un-capsulating the UDP packet back into whatever it was. This bit waits
>until another packet arrives.
>Again....any ideas????

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