[c-nsp] 7200s and fastethernet aggregator ?

[Rodney Dunn]

Before a couple of months ago I had to agree with you Kristo.

But maybe not now. ;)

I just had to work an issue with overruns on the NPE-G100 Gig ports
ona  7304 because it couldn't keep up.

The customer upgraded to the NSE-150 and in the lab it did line
rate GIG with no issues. The RP CPU in the case you need to punt
is much much faster. I need to go back and check the specs.

This customer was doing dual GIG links to the core and an OC12 on the
handoff to the WAN. It was filling up the WAN and the box never even
noticed. He was using the 1xOC12 SPA.

Something to consider....

Rodney

On Wed, Mar 28, 2007 at 12:07:55PM +0200, Kristofer Sigurdsson wrote:
> Hi,
> 
> Is the NPE-G2 stable? I guess there should be no problem in this
> 
> > regard, it's a pure central CPU design, but we never know.
> >
> > Also, the bottleneck in the 7200 seems to be the PCI bus latency for
> > small packets.
> 
> 
> 
> If you use the on-board gigE ports on G1 or G2,. the traffic does not go
> through the PCI bus.
> 
> Still, if your bandwidth or packet rate requirements are too heavy for the
> 7200, the 7600's are the next stop.  Do your research well before you swap
> out 7200 for 7600, though.
> 
> -Kristo
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