Date: Mon, 19 Jul 2004 08:59:06 -0700 From: "Kevin Oberman" <oberman@es.net> To: Jason Dusek <jason-dusek@uiowa.edu> Cc: mobile@freebsd.org Subject: Re: Smooth Wireless Message-ID: <20040719155906.16F5C5D08@ptavv.es.net> In-Reply-To: Your message of "Mon, 19 Jul 2004 10:34:40 CDT." <40FBEA10.5090102@uiowa.edu>
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> Date: Mon, 19 Jul 2004 10:34:40 -0500 > From: Jason Dusek <jason-dusek@uiowa.edu> > Sender: owner-freebsd-mobile@freebsd.org > > Hi Everyone, > > I would like to know about the right way to set up wireless. I have > Dell D600 with a Dell TrueMobile 1350 running CURRENT. Ndis works > well, and I've written a shell script that brings up my wireless > interface everytime that I boot. However, running wireless is still > not very smooth. I have a host of problems: > > => If I leave a wireless zone and then hook-up an ethernet cord my computer > will not simply switch to the corded interface. I have to run sysinstall. > => If I boot up with the ethernet configured and then enter a wireless zone, I > can't simply switch to the wireless - I have to run sysinstall. > => If I go from one wireless zone to another, I have to run sysinstall. > => Sometimes when I bring the wireless up in sysinstall, I get a 'page fault' > and my system crashes. > > How do I get my machine to dynamically pick the interface that is > working? And what do I do about these page faults? I have looked at > the Handbook, etc., and while there is some useful information there I > can't find anything that deals with changing one's interface on the > fly. OK. I give up. Why are you using sysinstall? I mean,this looks like a very awkward. I don't know of a way to do it dynamically, but something with devd might be possible. The basic steps to switching are: Disable old routes. (route flush) Configure new interface. (This usually means restarting dhclient.) Enable new routes. (May be a no-op as dhclient should do this.) That should be it. You might want/need to turn down the old interface with 'ifconfig INT down'. I tool to do most of this for you is available at: https://projects.fsck.ch/profile/ It's still in development, but generally works on current systems. It's based on rcng, so it will not work on V4 systems. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634
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