netdev - Re: Re : Re : Bonding : Monitoring of 4965 wireless card

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Message-ID: <20080109213127.GG8728@gospo.usersys.redhat.com>
Date:	Wed, 9 Jan 2008 16:31:27 -0500
From:	Andy Gospodarek <andy@...yhouse.net>
To:	patnel972-linux@...oo.fr
Cc:	"John W. Linville" <linville@...driver.com>, netdev@...r.kernel.org
Subject: Re: Re : Re : Bonding : Monitoring of 4965 wireless card

On Wed, Jan 09, 2008 at 09:17:06PM +0000, patnel972-linux@...oo.fr wrote:
> I ignore it, but it seems like it prevent bonding detect link of wlan0. I enslave wlan0 and i already use use_carrier=1;
> I use bond to have my etherenet ip in wifi at office, else the wireless connection give temporary and you must pass through proxy then.
> I'll try arp monitoring but this is annoying i c'ant test localhost. Is there a way to test localhost with arp, without pass through lo ? 
> 
> 
> 
> ----- Message d'origine ----
> De : John W. Linville <linville@...driver.com>
> À : patnel972-linux@...oo.fr
> Envoyé le : Mercredi, 9 Janvier 2008, 21h24mn 10s
> Objet : Re: Re : Bonding : Monitoring of 4965 wireless card
> 
> On Wed, Jan 09, 2008 at 07:31:37PM +0000, patnel972-linux@...oo.fr
>  wrote:
> > I'm doing a bonding with my eth0(e1000 driver) and my wlan
> > card(iwl4965). It work like i want, when i'm in wifi the dhcp give
> > me my ethernet adress. When i unplug the cable, my wlan card become
> > in charge of network. My problem is when i disconnect the wlan card,
> > the bonding does not detect it correctly, and ifplugstatus show me
> > wlan0 not connected and wmaster0 connected!! The bonding module does
> > not say no active interface, it work like wlan is on.
> > 
> > Am i clear?
> 
> Yes, that is much more clear to me.
> 
> What (if anything) are you doing to wmaster0?  You should just
> ignore it.
> 
> FWIW, miimon is not going to work with a mac80211-based device at
> this time.  The miimon option relies on support for either miitool
> or ethtool, and mac80211 device support neither of those.
> 
> Hmmm...it looks like there is a use_carrier option for miimon.
> Based on its description I would think it would work.  Of course,
> I think it is supposed to be the default and you don't seem to be
> disabling it.  So, I'm not sure what is happening.
> 
> Are you enslaving wlan0?  Or wmaster0?  Make sure it is wlan0.
> Also, please add use_carrier=1 to your bonding module options.
> Does this change the behaviour?  If not, please open a bug at either
> bugzilla.redhat.com (if you are a Fedora, RHEL, or even CentOS user)
> or bugzilla.kernel.org (otherwise).
> 
> In the meantime, you might try using NetworkManger.  Or you
> might consider using ARP monitoring.  The former probably is the
> best solution if you are mobile (e.g.  at a cafe or other hotspot)
> while the latter might be appropriate if you are just plugging and
> un-plugging within the same network (like at home or office).
> 
> Hth!
> 

John's suggestion to consider using ARP monitoring is a good one.  It is
the preferred method to check for failover when link checking is not an
option (which is the case with your current setup).

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