[afnog] gre on PPPoE

[Siwangu Mgata]

Thanks Stephane,

The application runs perfectly on a plain IP link.

When the VPN is up, other TCP apps runs well except the Data Store 
(Banking ) application.

The same application runs perfectly when i create a VPN over VSAT and 
wireless networks.

Rgds,

Siwangu


----- Original Message ----- 
From: "Stephane Bortzmeyer" <bortzmeyer at nic.fr>
To: "Siwangu Mgata" <svmgata at sihebs.co.tz>
Cc: <afnog at afnog.org>
Sent: Tuesday, June 12, 2007 12:43 PM
Subject: Re: gre on PPPoE


> On Tue, Jun 12, 2007 at 12:04:58PM +0300,
> Siwangu Mgata <svmgata at sihebs.co.tz> wrote
> a message of 72 lines which said:
>
>> I want to run a data store application between these two offices but
>> the challenge is when i create a VPN, the application stop working.
>
> Can you give more details? For instance, does the application work
> between the two sites when *not* using a VPN, just a regular IP link?
>
> (If so, I would suspect a TCP MSS problem, triggered by the lower MTU
> of the VPN. If I'm right, the TCP connection will be established but
> the data transfer will not occur.)
>
>> It stop working even when i create a simple ipip tunnel
>
> Same remark. More details are welcome. A simple tcpdump may
> suffice. Pinging the IP addresses also (a "data store application" is
> a terrible debugging tool).
>
>