[c-nsp] 7500 RSP8 Throughput Ability

[Alex Rubenstein]

> While we're on this subject - Is there any real-world differences
> between a GEIP and a GEIP+ with an RSP4 doing dCEF? I would like the
> flexability on the 7500 platform to do more than 100Mbit, but is there
> any point in a GEIP+ if I can't do more than 200Mbit anyway?

Should be.

The RSP in a dCEF environment has (somewhat) very little to do with 
forwarding performance.

In a properly functioning dCEF environment, where the VIP's are handling 
packet pushing, all the RSP is doing is everything except packet pushing 
-- routing protocols, SNMP, CLI, environment, etc. In this 'properly 
functioning' dCEF environment, the VIP's will more or less govern the 
performance of the box.

Because of this, and the fact that a GEIP is quite different than a GEIP+ 
(VIP2-50 vs. VIP4-80, single PCI connection PA<>VIP vs. dual), the 
performance is substantially better.

I recall at one point running at least 400 mbits/sec through a GEIP+. It's 
something I won't ever repeat, however.




-- 
Alex Rubenstein, AR97, K2AHR, alex at nac.net, latency, Al Reuben
Net Access Corporation, 800-NET-ME-36, http://www.nac.net