Date: Thu, 16 Jun 2005 14:02:21 -0700 From: "Kevin Oberman" <oberman@es.net> To: Brooks Davis <brooks@one-eyed-alien.net> Cc: Gary Kline <kline@tao.thought.org>, FreeBSD Mobile Mailing List <freebsd-mobile@freebsd.org> Subject: Re: can I use wireless & wired cards together? Message-ID: <20050616210221.114F15D08@ptavv.es.net> In-Reply-To: Your message of "Thu, 16 Jun 2005 13:12:17 PDT." <20050616201217.GB13900@odin.ac.hmc.edu>
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> Date: Thu, 16 Jun 2005 13:12:17 -0700 > From: Brooks Davis <brooks@one-eyed-alien.net> > > On Thu, Jun 16, 2005 at 12:21:29PM -0700, Gary Kline wrote: > > On Thu, Jun 16, 2005 at 10:49:28AM -0700, Kevin Oberman wrote: > > > > Date: Thu, 16 Jun 2005 10:37:21 -0700 > > > > From: Gary Kline <kline@tao.thought.org> > > > > Sender: owner-freebsd-mobile@freebsd.org > > > > > > > > My orig ^Subject line prob'ly should have read: > > > > "Can I just plug in a wifi card (and pull out my wired)?" > > > > > > > > I'm assuming that my Intel 10-100 card is unplugged and > > > > that I have a wifi (say, AR5211) inserted; will I be able > > > > to use my 600E at the library or Starbucks (or other > > > > hotspots)? In other words, will a wireless DHCP > > > > configuration *work*? If so, then it makes sense to > > > > take my ThinkPad along when I go out. > > > > > > > > gary > > > > > > > > > A much simpler question. The answer is "yes" with some caveats. > > > > > > It assumes that the AP is transmitting a beacon (which a public system > > > will) and no WEP. If this is the case, it should "just work". > > > > > > You can probably just (as root) issue 'dhclient wi0' and it should do > > > the trick. You probably want to be sure that your /etc/start_if.wi0 sets > > > the ssid to "" and wepmode to "off". > > > > > > Once I'm out <wherever> and reboot with the wifi card in > > place, where do I put the above lines? Where is > > /etc/start_if.wi0 called from? > > It's called from /etc/rc.d/netif and /etc/pccard_ether. The suggested > step should be unnecessicary (if it's necessicary it's a bug). I don't THINK that it is called from /etc/rc.d/netif any more. I think that is now all left to devd. I agree that the clearing of SSID and WEP should be unneeded, but I need to do it since profile(8) can leave the interface in a non-default configuration when the network starts. If you don't use profile, I agree with Brooks, but it makes moving a laptop around so much easier that I would never want to go back. I use static addresses some places, DHCP in others, different encryption and SSIDs are all simply dealt with with no intervention unless I connect somewhere with unusual characteristics. The simple answer for Gary is to make sure that rc.conf tells the system to use DHCP (ifconfig_wi0="DHCP") and away you go. -- 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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