[nsp] 7200 NPE-400 and performance/ problems

[Dmitri Kalintsev]

AFAIR, NPE-G1 has 3 PCI buses vs 2 usual (NPE400 et al), and I/O controller
is occupying the third (it's own) PCI bus instead of hitching the ride on
the left PA PCI bus. That's why it does not count towards PS bw points. I
don't have the URL, but it definitely was a Cisco document.

On Thu, Jul 10, 2003 at 11:57:56AM -0500, Chris Parker wrote:
> At 06:50 PM 7/10/2003 +0200, Gert Doering wrote:
> >Hi,
> >
> >On Thu, Jul 10, 2003 at 08:06:43AM -0700, Simon Hamilton-Wilkes wrote:
> >> Better yet, get the Gigabit I/O board and get a fourth Gig port that
> >> isn't on the backplane.
> >
> >Are you sure about that?  All docs I've seen so far seem to suggest that
> >the IO board ports are counted towards bus 0.
> >
> >(It might be different for the C7200-IO-GE/E, but I haven't yet seen
> >anything stating this, which is why I'm asking)
> 
> With the NPE-G1, if you have an I/O controller, the port(s) on that board
> do not count towards b/w points on the two PA busses.  With
> 
> http://www.cisco.com/warp/public/cc/pd/ifaa/prossor/prodlit/npeg1_ds.htm
> 
> "Frees the current I/O controller ports from bandwidth limitations, 
> allowing two PCI buses to be dedicated to the port adapter slots"
> 
> Any other NPE/NSE, and the I/O controller does consume b/w points.
---end quoted text---

SY,
-- 
D.K.