[c-nsp] Layer 2 question

[Gert Doering]

Hi,

On Tue, Jul 29, 2008 at 12:43:10PM -0400, Mike Johnson wrote:
> What happens if a layer 2 switch receives a frame that needs to be forwarded
> out the same
> port that the incoming frame was received on?

"drop"

> Im realize that a typical layer 2 switch would never forward that packet
> upstream in the first place.
> However, If it did in fact happen what does the upstream L2 switch do?

This is a very typical scenario if you hook an ethernet *hub* to an L2
switch port, and have two devices connected to the hub talk to each other.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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