In message <200212141746.gBEHk7A00312@fearless-vampire-killer.waterside.net>, R
afal Boni writes:
>In message <20021213232451.83306.qmail@web11705.mail.yahoo.com>, you write: 
>
>-> --- Manuel Bouyer <bouyer@antioche.eu.org> wrote:
>[...]
>-> > Maybe you can try to force the media ?
>-> > ifconfig tlp0 media 10baseT
>-> 
>-> This worked.  The status of the interface changes to active, and I can 
>-> pull an address from the dhcp server.  However, when I try to force
>-> 100BaseTX, it also reports that the interface is active, but it's 
>-> unable to connect to the AirPort.  Any ideas why one should work,
>-> but not the other?
>
>Probably because the Airport supports only 10BaseT and not 100BaseT, and
>when you force one end of the interface (your Tulip card in this case), 
>the other end of the link needs to be in the same "forced" state for the
>two ends to be able to communicate because forcing media generally dis-
>ables autonegotiation.
>

That was my first thought, especially since I have a 10BaseT-only 
Lucent "Residential Gateway", which is a clone of the Airport.  But a 
check of Apple's Web page shows that the newer Airports do support 
100BaseT.

		--Steve Bellovin, http://www.research.att.com/~smb (me)
		http://www.wilyhacker.com (2nd edition of "Firewalls" book)