[c-nsp] CPU comparison - bridge vs. route on 7206?

[Sam Stickland]

Chris Hale wrote:
> We have a set of 7206VXR's, NPE400 CPUs on each end of a point to point OC3
> using PA-POS-OC3 cards.  We bridge these circuits through a PA-GE interface
> (essentially turning the 7206's into a OC-3 to GigE converter) with a single
> bridge group.
>
> We are trying to push nearly 130-140Mbps, but per the MRTG graphs, we seem
> to be capping @ ~110Mbps.  The CPU is also averaging 80-90%.  We're seeing a
> large number of input errors (ignored, total of 5% of input packets) and a
> fair amount of output pauses (0.12% of output packets)
On a slightly different tack, make sure you are using 64 bit counters in 
MRTG or you will never record more than 114Mbps (the MRTG graph will 
wrap). (Probably you already know this, but I was struck by the 
similarity between ~110Mbps and 114Mbps).

Sam