[nsp] 7200 NPE-G1 and GE performance

[Sharan Harkisoon]

The i/o controller slot shares the left backplane.  So if you have a 2FE
controller, that takes 400 of the 600 points on the left backplane.



----- Original Message ----- 
From: "Tomas Daniska" <tomas at tronet.com>
To: "Gert Doering" <gert at greenie.muc.de>; "Steve Lalonde" <steve at enta.net>
Cc: <cisco-nsp at puck.nether.net>
Sent: Friday, May 16, 2003 8:50 AM
Subject: RE: [nsp] 7200 NPE-G1 and GE performance


> > > Bandwidth
> > > The NPE-G1 uses no bandwidth points, and when used with any
> > I/O controller,
> > > the I/O controller also uses no bandwidth points. None of
> > the Gigabit
> > > Ethernet interfaces on the NPE-G1 use bandwidth points.
> >
> > Thanks.  Amazing that - didn't know the backplane
> > architecture would let
> > them actually do that :-)
> >
>
>
> actually there are three pci buses on npe-g1
>
> one for the left column of slots
> one for the right one
> one for the i/o controller slot
>
> and the three on-board ge ports are connected directly to the cpu bus
> (thus not wasting bandwith points of the backplane pci buses)
>
> --
>
> deejay
>
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