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

Kevin Graham kgraham at industrial-marshmallow.com
Tue Aug 7 15:20:22 EDT 2007


--- Sridhar Ayengar <ploopster at gmail.com> wrote:

> Pete Templin 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?

Yes, which is why the NPE-G1 and NPE-G2 have onboard gigabit interfaces that
don't touch the shared backplane, along with the addition of VSA for NPE-G2.
Theoretically the bus bandwidth to a PA in C7200-JC-PA could be increased as
well, though I don't believe this is done presently.


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