What's a CGN

[Benedikt Stockebrand]

Philipp Kern <phil at philkern.de> writes:

> On Tue, Dec 04, 2012 at 10:51:54AM +0000, Benedikt Stockebrand wrote:
>> > True. It's not that 1G/1G CGN would be hard with Linux hardware of any sort.
>> I'll quote you on that one.  You realize what the "CG" in CGN stands for?
>
> Yep. I try to use it for the technology instead of the performance
> requirement, though. Because with less capable boxes you suffer of the
> same scalability issues. And the large CGN boxes are just much more
> beefier, the technology doesn't change much.

Aside from the fact that CGN hardware is by orders of magnitude more
expensive than commodity hardware running Linux in software, it is
also special-purpose hardware built for a fixed job.

As long as you can do your local NAT implementation on a cheap Linux
box, you can repurpose it once the NAT traffic goes down.  When we
talk CGN, you eventually throw some seriously expensive but by then
obsolete hardware away.


Benedikt

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