<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>NAT doesn't have to be limited to 64Ki sessions per IP.</div><div><br></div><div>It's also possible to use the original destination IP as an identifier in the translation. This raises the limit to millions of sessions, or 64K per destination port/IP combo.</div>
<div><br></div><div>I've seen 270K simultaneous translations running through a single IP on commodity hardware. Not pretty, but it worked.</div><div><br></div><div>John<br><br><br></div><div><br>On 01/03/2013, at 11:13 PM, Michael Andreas Schipp <<a href="mailto:MSchipp@a10networks.com">MSchipp@a10networks.com</a>> wrote:<br>
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<p class="MsoNormal">A /22 gives 1022 usable IPv4 address</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">CGN @ 1000 ports (64K per IP not using the well know ports) per user give 65408 subscribers – so is a /22 really that useless? I think not.</p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Note 1000 ports seems to be a safe number that we at A10 have used. However in some GEOs we have used as low as 100 ports per user
(due the whole county having next to no IPv4 space)</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Yes the world as a whole should move to IPv6 – I think everybody agrees with that.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I see the process as;</span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Use CGN where it makes sense</span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Dual Stack</span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Use DS Lite, 6RD and MAP-E/I where you can (keeping in mind you need CPE’s that can support that)</span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Native IPv6</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Will we be keeping and supporting IPv4 for a VERY long time in my opinion.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you,<br>
<b> <br>
</b>Michael A Schipp<b><br>
</b></span>Regional SE Manager ANZ</p>
<p class="MsoNormal"><b><span lang="EN-US">A10 Networks</span></b></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif""><br>
Direct: 0402 907 928<br>
Email: </span><a href="mailto:mschipp@a10networks.com">mschipp@a10networks.com</a></p>
<p class="MsoNormal"><span lang="EN-US">WEB: </span><a href="http://www.a10networks.com/"><span lang="EN-US">www.a10networks.com</span></a></p>
<p class="MsoNormal">Twitter: @maschipp</p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> <a href="mailto:ausnog-bounces@lists.ausnog.net">ausnog-bounces@lists.ausnog.net</a>
[<a href="mailto:ausnog-bounces@lists.ausnog.net">mailto:ausnog-bounces@lists.ausnog.net</a>] <b>On Behalf Of </b>Paul Brooks<br>
<b>Sent:</b> Friday, 1 March 2013 11:27 PM<br>
<b>To:</b> <a href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a><br>
<b>Subject:</b> Re: [AusNOG] APNIC Slashes Costs for New Members</span></p>
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<p class="MsoNormal">On 1/03/2013 11:08 PM, Damian Guppy wrote:</p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">The apnic policy is just trying to make entry to the market cheaper for the small players, then they can try and be shrewed with their pittence or start making enough to
afford a larger range. </span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
Actually, I think the theory is that with a /22, a new entrant can use CGNAT and oversubscribe it 100:1 or whatever ratio turns out to be optimum and support a significant number of subscribers, without having to have a larger range at all.<br>
It might work if you pick your target customers carefully.<br>
<br>
Paul</p>
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