At 11:29 a.m. 23/09/2004, you wrote:
>Hi,
>
>Just posting the final results of my setup, just in case anyone searches the archives.
>
>It turns out that we needed to set the MTU to 1492 on the following devices: WiredCountry Router (D-Link), Proxy Server and our Web Server. The web server is running through a proxy server as a temporary measure to solve the problem with default gateways and two ISPs.

Ah so it was a PPPoE MTU issue then. Thought so :-)

Actually although this has nothing really do to with ADSL, it is relevant to some NZ ADSL users since I believe there are some TelstraClear ADSL customers who use PPPoE (cable users do as well I think but still off topic)

>The thing I had missed before was that Proxy Server, a Win2K pro machine, also needed it's MTU set to 1492.
>
>Interestingly we also have a firewall/VPN appliance, a SonicWall Pro, between our web server and proxy server, but we don't need to change it's MTU - still currently 1500.
>
>Though not a perfect solution it is workable, especially given the exceptional business plans that we can get through Wired Country.

Is there likely to be any other solution though? Given that PPPoE can only ever have a max MTU of 1492 and there is no other authentication option that I know of for WC ISPs to use, it seems to me as it'll always be the only solution.

Of course I'm not saying authentication is essential but most WC ISPs seem to think so...

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