[c-nsp] Switch mac address appearing in a VLAN going through it
Gert Doering
gert at greenie.muc.de
Wed Dec 14 14:27:01 EST 2005
Hi,
On Wed, Dec 14, 2005 at 08:02:11PM +0200, Saku Ytti wrote:
> On (2005-12-14 18:51 +0100), Gert Doering wrote:
>
> > Actually, portfast will not turn off STP, it will just modify it (telling
> > rapid-stp that this is an edge-port, and turn off the "listening/learning"
> > phases of normal STP). If you build a loop via two portfast-enabled ports,
> > the switch will still shut down the port, but only after a few seconds -
> > in the mean time, you'll have a loop.
>
> I thought that it doesn't turn off anything, just travel to forwarding
> immediately in classical STP and in RST give upstream permission to
> move to forward immediately. And that all this would be reverted
> to normal behaviour upon receiving BPDU.
Well, that's about what I wanted to say :-)
gert
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Gert Doering - Munich, Germany gert at greenie.muc.de
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