Messages in this thread | | | Date | Mon, 20 Mar 2000 10:53:22 +0200 | From | Eran Mann <> | Subject | Re: Request for ethernet drivers in general. |
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Actually the standard that premits Ethernet frames with the extra 4 bytes required for VLAN tagging is 802.3ac, and it was approved already in 1998. You can get (a little) more information at: http://grouper.ieee.org/groups/802/3/ac/index.html Regarding support of modern net-gear, I believe most currently sold switches|hubs|routers support this standrad.
Jes Sorensen wrote: > > Ben> The spec, or at least some spec, allows for 802.1Q VLAN pkts that > Ben> are 4 bytes bigger. I hear most hardware will support it: you > Ben> just have to make the drivers able to handle it. I know some > Ben> cards work, at least in the 2.2 series, but others don't. At > Ben> around the 2.3.48 timeframe, the tulip driver no longer worked > Ben> (It may have been fixed by now, I haven't tested lately.) > > Do you know which standard this is? > > Ben> In general, while ppl are working on drivers, if they can just be > Ben> aware that 1500 (+ 4 + overhead) is an option, it shouldn't be > Ben> hard to support. > > That sounds really scary, my worry here is not really whether the NICs > support it, the interesting issue is whether all (or at least the > majority) of the switches, hubs and routers on the market will do > it. The only way to be sure is if the Ethernet standard allows for > this, if there is some proposal to allow this by the 802.1Q people, > but it's not in the original Ethernet standard, then it should > certainly only be an option. The think I don't like is that it will > require that you implement driver specific versions of > dev_change_mtu() for each driver. > > Jes > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.rutgers.edu > Please read the FAQ at http://www.tux.org/lkml/
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