[Sorry for the late reply to this:] On Tue, 4 Jun 2002, Andy Warner <andyw at pobox.com> wrote: > Brent J. Nordquist wrote: > > > It just appears that packets that are too large get (consistently) > > dropped, which means that TCP sessions that only use small packets (such > > as an interactive SSH session) work fine, but as soon as a TCP session > > uses a large packet, that session is no longer usable (since the retries > > are dropped too). Other existing and new sessions continue to work fine. > > By limiting the MTU I no longer experience it at all. > > Does either the AP or the PC card have the RTS/CTS setting enabled ? If > so, what's the packet size set to ? The (LinkSys WAP11 v2.2) AP has the "RTS Threshold" set to 2432 and "Fragmentation Threshold" set to 2346. The config. web page shows those as the maximums, and the default values. I haven't figured out how to check those values on the iBook yet (I'm running Mac OS X and it's an Airport card). > Why are you not using a 1500 byte (e.g. ethernet) mtu ? Because when I do, packets over 576 in size get dropped on the floor. An MTU of 576 on both sides causes the problem to go away. I have no idea why a standard 1500 MTU doesn't work, or why a 576 MTU gets me around the problem (and I am still curious); I just know empirically that it does. I also know the iBook doesn't have this problem with the APs at work. -- Brent J. Nordquist <brent at nordist.net> N0BJN Other contact information: http://www.nordist.net/contact.html