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Date:	Sat, 21 Feb 2015 11:29:38 +0000
From:	Viswanath Bandaru <vbandaru@...adcom.com>
To:	Jiri Pirko <jiri@...nulli.us>,
	Florian Fainelli <f.fainelli@...il.com>
CC:	roopa <roopa@...ulusnetworks.com>,
	"sfeldma@...il.com" <sfeldma@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux@...ck-us.net" <linux@...ck-us.net>,
	"andrew@...n.ch" <andrew@...n.ch>,
	"gospo@...ulusnetworks.com" <gospo@...ulusnetworks.com>,
	"siva.mannem.lnx@...il.com" <siva.mannem.lnx@...il.com>
Subject: RE: [PATCH net-next RFC 0/5] Add NTF_EXT_AGED to control FDB ageing
 in SW or HW

> -----Original Message-----
> >
> >I agree, in fact, most of the HW I have access to only has a global age
> >timer configuration knob. Is this configurable on a per-port basis for
> >higher end switches, or even maybe per-FDB entry?
> 
> I'm currently not aware of any hw which does not have global age timer.
> But I believe that they will appear. The model that we have now, to
> propagate aging setting of bridge down is more general and should be ok.
> 
> Drivers should probably take care of multi bridge setup with different aging
> setup. Maybe to find minimal time and print a warning?
> 

Setting up the minimal time in such a scenario is good. 

Should we also consider the possibility bridges containing ports from different  devices (and therefore different drivers) ? If that is a possibility, I think the bridge module should take responsibility of finding out the minimal time to pushing to all involved drivers.


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