[c-nsp] NPE-G1 PPS limitations

[Ross Vandegrift]

On Fri, Apr 18, 2008 at 05:03:01PM +0300, Hank Nussbacher wrote:
> >For the GE ports on NPE-G1 you can expect around 470kpps at 64B, for
> >the traffic going from/to GE port on NPE-G1 to C7200-I/O-GE it's
> >close to 380kpps at 64B, and going from/to PA-GE it's only around
> >120kkps at 64B. That'll depend on features, IOS train and the traffic
> >characteristics of course but those are the baselines for empty
> >config with CEF and 12.1 train. 12.2S and latest 12.4(15)T rebuilds
> >should get better performance in the same scenario.
> >
> >PA-GE to PA-GE traffic maxes out at around 160kpps at 64B with NPE-G1
> >and NPE-400 - so it's not limitation of CPU engine but a bus
> >limitation.
> 
> I need PA-GE to C7200-I/O-GE connectivity.  For 1500 bytes, what is the 
> kpps one can expect for PA-GE to C7200-I/O-GE connectivity?  IOS train is 
> 12.4(12) but can be upgraded if we know there is better performance at a 
> later version.

Based on what I have seen, you will start dropping packets at around
400Mbps.  I saw that on 12.4(12), didn't test other builds as we had a
lower-traffic link that could be swapped onto the PA-GE.


-- 
Ross Vandegrift
ross at kallisti.us

"The good Christian should beware of mathematicians, and all those who
make empty prophecies. The danger already exists that the mathematicians
have made a covenant with the devil to darken the spirit and to confine
man in the bonds of Hell."
	--St. Augustine, De Genesi ad Litteram, Book II, xviii, 37