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There's a lot of reasons for IPv6 (about 2^128 reasons), but I don't
think it has anything to do with keeping global routing running.<br>
Not when the two biggest vendors have routers that will scale to
millions of routes, the biggest carriers have or will have these
routers in their networks, and likely don't even have BGP running
within their cores (since you don't have to with MPLS). <br>
<br>
Routing tables are of course growing (though nowhere near at the rate
of the early 1990's) and mid-sized carriers may be feeling the pinch.
But hey, if you haven't upgraded your hardware or network architecture
since Y2K, you can't complain - and I don't think they are, I think
they're just happy that they can actually get another few years out of
their kit by re-using as MPLS switches or aggregation routers. The fact
they've survived in business this long means they can afford to upgrade
their edge/peering boxes where the big routing tables are needed.<br>
<br>
Call me a cynic, but I think it's either very optimistic or very naive
to think that just because IPv6 has a nice hierarchical address
allocation/aggregation plan on paper, that the IPv6 routing tables are
going to look much different from today. You have the pressures of the
market/business and the random entropy of global network with no
central management that's going to churn the routing tables, punch
holes in it and leak prefixes everywhere. <br>
<br>
Ted Mittelstaedt wrote:
<blockquote cite="mid:NABBJOELMNGNJNGPKDDOMEMIHCAA.tedm@ipinc.net"
type="cite">
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<blockquote type="cite">
<pre wrap="">-----Original Message-----
From: <a class="moz-txt-link-abbreviated" href="mailto:ppml-bounces@arin.net">ppml-bounces@arin.net</a> [<a class="moz-txt-link-freetext" href="mailto:ppml-bounces@arin.net">mailto:ppml-bounces@arin.net</a>]On Behalf Of
Kevin Kargel
Sent: Wednesday, July 11, 2007 12:07 PM
To: <a class="moz-txt-link-abbreviated" href="mailto:PPML@arin.net">PPML@arin.net</a>
Subject: Re: [ppml] IPv4 "Up For Grabs" proposal
Why is there such a big push to drop IPv4?
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</blockquote>
<pre wrap=""><!---->
Didn't you read John's posting yesterday?
"If you've got a way to keep IPv4 running, and still maintain
the enough hierarchy to keep global routing running, then
it's time to enter the spotlight and share the secret. There
is no doubt that its so much easier for us all to stay on IPv4
then to move to IPv6, we just don't know how to do it, and
still keep the Internet running"
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</blockquote>
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