[c-nsp] gigabit ports/modules for 7507 and 7513 routers

[Howard Leadmon]

I thought they had increased the speed on the bus with the VXR, and why some
things prior to the NPE300 wouldn't work correctly, but I could be way off on
that one.  Also if I am correct, with the NPE-G2 you now have 3 PCI busses
available, since the old slot for the I/O controller is now independent and
setup for a high bandwidth usage.

I just picked up a G2, so guess I will soon learn first hand how well it
works..


---
Howard Leadmon 


> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Gert Doering
> Sent: Tuesday, August 07, 2007 4:16 PM
> To: Sridhar Ayengar
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] gigabit ports/modules for 7507 and 7513 routers
> 
> Hi,
> 
> On Tue, Aug 07, 2007 at 02:48:02PM -0400, Sridhar Ayengar wrote:
> > > My understanding is that the PA-CyBus interface is a variation of PCI
> > > that's limited to 330Mbps.
> [..]
> > So then doesn't that limitation also apply to the 7200VXR series routers?
> 
> There's no CyBus in 7200s.  Just plain PCI, which, in theory, could
> transport about a Gbit/s (33 MHz * 32 bit) - but even then, only
> half-duplex, and not under real-world conditions.
> 
> gert
> --
> USENET is *not* the non-clickable part of WWW!
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> Gert Doering - Munich, Germany
> gert at greenie.muc.de
> fax: +49-89-35655025                        gert at net.informatik.tu-
> muenchen.de
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