[Pc_Support] Re: ABS 8-Port, 5-Port GbE Switch -- VSC7388, VSC7385 (Blog article)

[Bryan J. Smith]

Derek Konigsberg <octo at logicprobe.org> wrote:
> Yes, and I responded with info showing that the GA620 had 802.3x,
> if you read after where you put the "... cut ...".

Hmmm, I guess I had earlier revisions or a different model.  Good to
know.

> But with a proper managed layer-2 switch, you can have multiple
> VLANs which could use different MTUs.

Setting up VLANs is really no different between layer-2 and layer-3
switches, although more advanced switches can associate VLAN
membership by attributes (such as frame size).

The _difference_ is in the fact that the VLAN doesn't have to leave
to the layer-3 switch to be routed.  Once the switch associates 

> The whole point is that you can break the switch into multiple
> layer-2 networks.  I seriously think you're getting your layers
> mixed up, since none of this requires *any* layer-3 functionality
> on the switch.  (where layer-3 implies something like IP, and
> this is all in ethernet)

But how do you communicate between _different_ VLANs?
That is the key to everything I'm saying.  ;->


-- 
Bryan J. Smith     Professional, Technical Annoyance
b.j.smith at ieee.org      http://thebs413.blogspot.com
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*** Speed doesn't kill, difference in speed does ***