[nsp] SPAN on 6509 with matrix / SUP720

[Gert Doering]

Hi,

   http://www.cisco.com/warp/public/473/41.html#topic7

explains quite nicely how SPAN works on the 5000 and 6000 catalyst
platforms (basically "each packet is flooded to all line cards, and 
all ports not interested in the packet just drop it").

This sounds like a useful approach for a bus based system - but now the
interesting question is: how does the 6500 do it if you have a switch 
matrix and/or the SUP720 installed?  "Flooding" sounds like a stupid idea
in that scenario.

I google'd and searched on cisco.com, but couldn't find anything that
explains SPAN on those platforms... anybody here that could share some
insights?

thanks,

gert

PS: what got me started was "does SPAN work on the 2948G-L3?" - and the
answer is: it doesn't.  On the 8500, of which the -L3 is a fixed-config
derivative, it *does*.  Bah.
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert.doering at physik.tu-muenchen.de