[nsp] NPE-G1

[David Sinn]

The limit is the CPU.  Cisco's marketing numbers for the NPE-G1 forwarding
ability is 1Mpps.  So just doing the math means that you can do on the order
of 1Gig unidirectional, but no more.  Given that the real world PPS numbers
are often different, it should be of no surprise that no one has reported
wire-rate.

Now, that is not to say that the NPE-G1 isn't a useful NPE.  We've got a
large number deployed and they have provided a very useful extension to the
life cycle of the 7200 platform.

David

On 1/30/04 2:24 PM, "Streiner, Justin" <streiner at stargate.net> wrote:

> On Fri, 30 Jan 2004, Gert Doering wrote:
> 
>> On Fri, Jan 30, 2004 at 04:47:30AM -0600, HyunSeog Ryu wrote:
>> [..]
>>> Besides, GE usage will be limited from PCI bus speed - 800Mb I believe -,
>>> so I guess combined bandwidth from 3 GE ports in NPE-G1 can not be exceed
>>> more than PCI bus speed limit at all.
>> 
>> This is not correct!  The 3GEs on the NPE-G1 are NOT connected to any of
>> the PCI buses in the 7206VXR.
> 
> True, though I haven't heard of anyone that's been able to get wire-speed
> performance on the GE ports directly on the NPE-G1 using real-world
> traffic/conditions :-)  I'm sure the performance is better than a PA-GE on
> one of the PCI buses, but I don't know how much better...
> 
> jms
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