<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jul 21, 2014 at 12:04 AM, Seun Ojedeji <span dir="ltr"><<a href="mailto:seun.ojedeji@gmail.com" target="_blank">seun.ojedeji@gmail.com</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<p dir="ltr">- NAT affecting performance on bandwidth increase: I have not noticed this quite much</p></blockquote><div><br></div><div>This isn't a valid scenario. It's merely a factor that feeds into the second scenario. It goes something like this</div>
<div><br></div><div>a) A few <span id="ee08287b-4311-4e0b-b344-93f0b7973083" class="GINGER_SOFTWARE_mark">NATed</span> uses exist at a given bandwidth. Performance isn't great so the users tend to do 'light' and essential stuff</div>
<div><br></div><div>b) More bandwidth is provisioned </div><div><br></div><div>c) Users suddenly become more sophisticated and find ways to use the extra bandwidth (that's when they discover streaming video and audio)</div>
<div><br></div><div>d) Due to (c), performance degrades. This is essentially your second scenario. </div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<p dir="ltr">- NAT affecting performance on <span id="c7501f0e-b9fa-4a41-ab8c-6c4e1052b257" class="GINGER_SOFTWARE_mark">concurrent user increase</span>: This is quite valid and one of the downsides of a NATed network</p>
<p dir="ltr">Cheers!</p><div class="">
<p dir="ltr"><span id="8d43dda8-b546-4a67-8e4a-c39dd06bfb71" class="GINGER_SOFTWARE_mark">sent</span> from Google nexus 4<br>
<span id="5f61d284-c614-4bdb-9804-9a830701c8a4" class="GINGER_SOFTWARE_mark">kindly</span> excuse brevity and typos.</p>
</div><div class="gmail_quote"><div><div class="h5">On 20 Jul 2014 20:56, "Mukom Akong T." <<a href="mailto:mukom.tamon@gmail.com" target="_blank">mukom.tamon@gmail.com</a>> wrote:<br type="attribution"></div>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jul 20, 2014 at 9:00 PM, Stephen Wilcox <span dir="ltr"><<a href="mailto:steve.wilcox@ixreach.com" target="_blank">steve.wilcox@ixreach.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>
<br>
</div>What is interesting is that NAT has the potential to slow<br>
<span><span id="a17d370e-23d7-41ea-93b4-e4f24eadebb7" class="GINGER_SOFTWARE_mark">down</span></span> your performance, as you scale up bandwidth.<br></blockquote><div><br></div></div><div>Is there data on this (I am not doubting <span><span id="76a4f73d-e9a6-47dc-a468-26e74edb930f" class="GINGER_SOFTWARE_mark">you just</span></span> that I haven't heard this being stated before)</div>
</blockquote><div><br></div><div><br></div><div>Not sure about <span><span id="4a8cb293-a7a8-4514-bb25-13ab2d442df0" class="GINGER_SOFTWARE_mark">data but</span></span> 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 <span><span id="0aa8e7cf-855e-4f5f-9531-70475d51eb27" class="GINGER_SOFTWARE_mark">fast</span></span> and then gradually slows down. </div>
<div><br></div><div><br></div><div>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 <span><span id="2aef6cf1-7062-4309-b2f0-405bb9475445" class="GINGER_SOFTWARE_mark">Youtube</span></span> video streaming not just checking email and browsing web pages) grew, we ran smack into this problem.</div>
<div><br></div><div>a) Every system has a constraint (Systems Thinking 101).</div><div>b) When you fix the constraint, another one pops up<span><span id="04d28c94-0269-4fee-ae38-ff97825a07e4" class="GINGER_SOFTWARE_mark"> ...</span></span> probably in a different part of the system.</div>
<div><br></div><div>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.</div></div>
<br><br><br clear="all"><div><br></div>-- <br><br>Mukom Akong T.<br><br><a href="http://about.me/perfexcellence" target="_blank">http://about.me/perfexcellence</a> | twitter: @perfexcellent <br>------------------------------------------------------------------------------------------------------------------------------------------<br>
“When you work, you are the FLUTE through whose lungs the whispering of the hours turns to MUSIC" - Kahlil Gibran<br>-------------------------------------------------------------------------------------------------------------------------------------------<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><br>Mukom Akong T.<br><br><a href="http://about.me/perfexcellence" target="_blank">http://about.me/perfexcellence</a> | twitter: @perfexcellent <br>------------------------------------------------------------------------------------------------------------------------------------------<br>
“When you work, you are the FLUTE through whose lungs the whispering of the hours turns to MUSIC" - Kahlil Gibran<br>-------------------------------------------------------------------------------------------------------------------------------------------<br>
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