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Message-ID: <042501c08554$dddbf1e0$77cb87d4@n3.uk.knowtion.net> From: "Peter Galbavy" <peter.galbavy@knowledge.com> To: "Ryan O'Connell" <ryan@complicity.co.uk> Cc: <nanog@merit.edu> Date: Tue, 23 Jan 2001 15:55:05 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Errors-To: owner-nanog-outgoing@merit.edu Fixed - yep MTU on the E1 link was the problem. Thanks Ryan, and all the other who tried in private e-mail. rgds, -- Peter Galbavy Knowledge Matters Ltd. http://www.knowledge.com/ ----- Original Message ----- From: "Ryan O'Connell" <ryan@complicity.co.uk> To: "Peter Galbavy" <peter.galbavy@knowledge.com> Cc: <nanog@merit.edu> Sent: Tuesday, January 23, 2001 3:36 PM Subject: Re: clue for the clueless please > > On Tue, Jan 23, 2001 at 01:59:41PM -0000, Peter Galbavy wrote: > > Yes, we intentionally (for some other reason during testing) set the MTU on > > the p2p link to 554 - oops. Will get it switched back... Still wondering > > though - if a normal dial-up has a lower than 1500 MTU, why would they work. > > Sounds almost certainly like an MTU problem. Try www.bt.com, if that fails > then it's pretty much definite. Microsoft are a bit silly for setting the > DF bit on outbound packets, firewalls at web hosting facilities that block > all ICMP are even more silly. Why on earth Microsoft, who must know about this > problem, block ICMP on their kit I don't know... > > Most if not all dialup has an MTU of 1500. > > -- > Ryan O'Connell - <ryan@complicity.co.uk> - http://www.complicity.co.uk > > I'm not losing my mind, no I'm not changing my lines, > I'm just learning new things with the passage of time > >
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