Arista Routing Solutions

Sun Apr 24 15:57:00 UTC 2016

Got it, thanks for the explanation!

> -----Original Message-----
> From: Saku Ytti [mailto:saku at ytti.fi]
> Sent: Sunday, 24 April, 2016 11:03
> To: Keith Medcalf
> Cc: nanog list
> Subject: Re: Arista Routing Solutions
> 
> On 24 April 2016 at 05:14, Keith Medcalf <kmedcalf at dessus.com> wrote:
> 
> > High Touch / Low Touch
> 
> High touch means very general purpose NPU, with off-chip memory. Low
> touch means usually ASIC or otherwise simplified pipeline and on-chip
> memory. Granted Jericho can support off-chip memory too.
> 
> L3 switches are canonical example of low touch. EZchip, Trio, Solar,
> FP3 etc are examples of canonical high touch NPUs. What low touch can
> do, it can do fast and economically.
> 
> But like few terms, it's not exact, and borders are hazy and even
> subjective.
> 
> 
> 
> --
>   ++ytti