Date: Tue, 31 Mar 2009 09:24:08 -0700 From: Sam Leffler <sam@freebsd.org> To: Mel Flynn <mel.flynn@mailing.thruhere.net> Cc: freebsd-mobile@freebsd.org Subject: Re: Switching from wired to wireless getting "network down" Message-ID: <49D243A8.5050601@freebsd.org> In-Reply-To: <200903311054.35181.mel.flynn@mailing.thruhere.net> References: <1238217783.00093348.1238205603@10.7.7.3> <Pine.GSO.4.64.0903281851000.23196@sea.ntplx.net> <49CFBA6D.9070208@freebsd.org> <200903311054.35181.mel.flynn@mailing.thruhere.net>
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Mel Flynn wrote: > On Sunday 29 March 2009 20:14:05 Sam Leffler wrote: >> Daniel Eischen wrote: >>> On Sat, 28 Mar 2009, Daniel Eischen wrote: >>>> No, there's no PR as far as I can tell. I'll try and set up a >>>> test system to duplicate it again, so I have proper information >>>> for a PR. >>>> >>>> I seem to recall that if wlanX is your primary/first lagg >>>> interface, then it uses the MAC address from the underlying >>>> interface as lagg's MAC address. In this case it works, >>>> but that's not the usual case 'cause you'd rather use a >>>> faster wired interface first if it exists. >>>> >>>> So this works: >>>> >>>> ifconfig lagg0 laggproto failover laggport wlan0 laggport bge0 >>>> >>>> but this doesn't: >>>> >>>> ifconfig lagg0 laggproto failover laggport bge0 laggport wlan0 >>>> >>>> In the latter case, lagg only works when bge0 is up. >>> Also note that lagg(4) still references ath0 in its example instead >>> of wlan0. >>> >>> # ifconfig em0 up >>> # ifconfig ath0 nwid my_net up >>> # ifconfig lagg0 laggproto failover laggport em0 laggport ath0 \ >>> 192.168.1.1 netmask 255.255.255.0 >> r190526 makes it possible to do the wired/wireless failover in HEAD. >> The only caveat is you must manually set the mac address of the wireless >> device to match the wired device because lagg's automatic setting of the >> wlanX ifnet doesn't propagate to the underlying device (the way >> if_setlladdr works makes it difficult). In the mean time you can do: >> >> ifconfig ath0 ether 00:11:22:33:44:55 >> >> where the mac address is whatever your wired nic's address is and then >> setup lagg0 using the wlan; e.g. >> >> ifconfig ath0 ether 00:11:22:33:44:55 >> ifconfig wlan create wlandev ath0 ssid my_net up >> ifconfig lagg create laggproto failover laggport em0 laggport wlan0 ... >> >> I also verified it works with WPA. In fact I tested this on a thinkpad >> in a docking station and it did the right thing just un-docking and >> re-docking. My only complaint is my ping running during all this lost >> one packet in the transition; not sure where. > > Great! Does this also work for hostap mode now? I'd like to unify my internal > network, currently using rum as hostap. > If the answer is no, I pledge to file a PR. ;) I don't understand what you're looking for but it's unlikely this will do what you want. lagg's failover protocol acts like a single-position switch funneling packets to one of several devices (all of which are assigned the same mac address). Sam
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