Re : Re : Bonding : Monitoring of 4965 wireless card

Re : Re : Bonding : Monitoring of 4965 wireless card

[patnel972-linux]

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@tuxdriver.com>
À : patnel972-linux@yahoo.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@yahoo.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
-- 
John W. Linville
linville@tuxdriver.com





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

[Andy Gospodarek]

On Wed, Jan 09, 2008 at 09:17:06PM +0000, patnel972-linux@yahoo.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@tuxdriver.com>
> À : patnel972-linux@yahoo.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@yahoo.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).

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

[Jay Vosburgh]

patnel972-linux@yahoo.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;

	The default for bonding is use_carrier=1, which makes bonding
use the device driver's netif_carrier_on/off state for link detection.
Bonding only checks via ethtool/mii if use_carrier=0.

>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 ? 

	What do you mean by "test localhost with arp, without pass
through lo"?  ARP monitoring issues probes (ARPs) to a remote
destination to confirm that there is connectivity; I'm not sure what
localhost has to do with it.

	In general, though, I have not tested bonding with wireless
adapters, so I'm unfamiliar with how well it does or does not work.

	-J

---
	-Jay Vosburgh, IBM Linux Technology Center, fubar@us.ibm.com