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<p class="MsoNormal"><span lang="EN-US">Hi Jordi, <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Just saw this:<o:p></o:p></span></p>
<p class="MsoNormal"><br>
<span lang="EN-US">> </span>In addition to that, there are some advantages such as the opex savings. It is less expensive to manage IPv6-only with IPv4aaS across your network than pure dual-stack. May be not 50%
<span lang="EN-US">> </span>savings, but still impacting a lot.<br>
<br>
<o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I’m really curious to hear you say this – because I am not sure I agree – I think it largely depends on how the v6 deployment is done.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In our case – we insist on enforced single-topology dual-stack and I’ve never seen a cost increase as a result. Nor have I seen a cost increase in the hardware – there is one particular vendor who – if you forget to
ask for v6 licenses, will attempt to charge you for them afterwards, but after they tried that once – well, let’s just say I convinced them not to try that again with us.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The costs of running dual-stack often come from operational overheads – and that can be greatly reduced by running a single topology and treating v6 as a fundamental building block the same way you treat v4. As I’ve
said in other emails – there are still fundamental problems that I see with a variety of services on v6 – particularly in the MPLS world – and we’re working very hard on solving this, but even with that, the base routing can still be done dual-stack single-topology
without massive cost increases.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">So – can you explain why you believe v6 is more expensive opex wise? It’s a really interesting viewpoint.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Andrew<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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