[rpd] Re: Factors affecting in-region utilization - way forward?

[Seun Ojedeji]

I think there are 2 scenarios here:

- NAT affecting performance on bandwidth increase: I have not noticed this
quite much

- NAT affecting performance on concurrent user increase: This is quite
valid and one of the downsides of a NATed network

Cheers!

sent from Google nexus 4
kindly excuse brevity and typos.
On 20 Jul 2014 20:56, "Mukom Akong T." <mukom.tamon at gmail.com> wrote:

>
> On Sun, Jul 20, 2014 at 9:00 PM, Stephen Wilcox <steve.wilcox at ixreach.com>
> wrote:
>
>>
>>> What is interesting is that NAT has the potential to slow
>>> down your performance, as you scale up bandwidth.
>>>
>>
>> Is there data on this (I am not doubting you just that I haven't heard
>> this being stated before)
>>
>
>
> Not sure about data but I have experienced this and have heard lots of
> others share similar experience.  The Internet suddenly becomes slow and
> unusable Checks on how much traffic is being pulled down indicated the
> bandwidth pipe is still largely unfilled. Reboot router, Internet becomes
> fast and then gradually slows down.
>
>
> We also faced this big time on a very large university network. We
> inherited it with multiple layers of NAT, 4Mbps satellite bandwidth and
> hundreds of sophisticated end-users. As user-base grew and their
> 'sophistication' (think Youtube video streaming not just checking email
> and browsing web pages) grew, we ran smack into this problem.
>
> a) Every system has a constraint (Systems Thinking 101).
> b) When you fix the constraint, another one pops up ... probably in a
> different part of the system.
>
> In Africa, I think bandwidth used to be THE constraint in many countries.
> As that's been solved in some places, the constraint has now shifted to
> number of ports available for doing NAPT.
>
>
>
>
> --
>
> Mukom Akong T.
>
> http://about.me/perfexcellence |  twitter: @perfexcellent
>
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