[c-nsp] per interface Mac-Address on a switch

[direct1 at gmx.net]

Hi,
> > can any one tell me why cisco use a mac-address per interface on a
> switch?
> > Is there a document, which explains this? If i look on different switch
> vendors, i see mostly only 1 mac-Address per switch.
> 
> MAC address per port is required for spanning tree.
Why needs it a mac per interface?
Do you have a link for it? I haven't found it on the cisco site.

Thanks 
Markus

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