[99640] in North American Network Operators' Group
Re: NAT v6->v4 and v4->v6 (was Re: WG Action: Conclusion of IP
daemon@ATHENA.MIT.EDU (Alain Durand)
Mon Oct 1 08:29:24 2007
Date: Mon, 01 Oct 2007 08:28:01 -0400
From: Alain Durand <alain_durand@cable.comcast.com>
To: Mark Smith <nanog@85d5b20a518b8f6864949bd940457dc124746ddc.nosense.org>
CC: <jari.arkko@piuha.net>, <randy@psg.com>, <nanog@nanog.org>
In-Reply-To: <20070930095403.b3c1632a.nanog@85d5b20a518b8f6864949bd940457dc124746ddc.nosense.org>
Errors-To: owner-nanog@merit.edu
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On 9/29/07 8:24 PM, "Mark Smith"
<nanog@85d5b20a518b8f6864949bd940457dc124746ddc.nosense.org> wrote:
> Hi Alain,
>=20
> On Fri, 28 Sep 2007 08:45:58 -0400
> "Durand, Alain" <Alain_Durand@cable.comcast.com> wrote:
>=20
>> >
>> > It is also becoming apparent that:
>> >
>> > - the "core internet" (ie the web and any infrastructure server) will =
take
>> a long time to move to v6 and/or dual stack.
>> >
>> > - new v6-only edges will have to communicate with it. So we need v6->v=
4
>> translation in the core
>> >
>=20
> MPLS as well as the IETF softwires techniques (the MPLS
> model without using MPLS i.e. tunnel from ingress to egress via
> automated setup tunnels - gre, l2tp, or native IPv4 or IPv6) can or
> will shortly be able to be used to tunnel IPv6 over IPv4 or vice versa.
> softwires in effect treats the non-native core infrastructure as an
> NBMA layer 2.
>=20
> -----> Mark,
>=20
> I=B9m afraid my use of the word =B3core internet=B2 has confused you and others=
.
> I was not talking about core backbone, but about all the infrastructure t=
hat
> user
> depend on, eg web servers, mail servers, streaming servers, p2p,....
>=20
> Yes MPLS or Softwires will help you cross those core backbones, but won=B9t=
do
> much to
> help content providers to upgrade to v6... The problems are very differen=
t
> there.
> I know we are network engineers and as such tend to see every problems as
> network layer.
> However, this is not a layer 3 issue but a layer 7 & 8:
> getting the applications ported to v6 and paying for the upgrade.
>=20
>=20
> - Alain.
>=20
>=20
>=20
>=20
>=20
>=20
>=20
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On 9/29/07 8:24 PM, "Mark Smith" <nanog@85d5b20a518b8f6864949b=
d940457dc124746ddc.nosense.org> wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE=3D"Verdana, Helvetica, Arial"><SPAN STYL=
E=3D'font-size:12.0px'>Hi Alain,<BR>
<BR>
On Fri, 28 Sep 2007 08:45:58 -0400<BR>
"Durand, Alain" <Alain_Durand@cable.comcast.com> wrote:<BR>
<BR>
><BR>
> It is also becoming apparent that:<BR>
><BR>
> - the "core internet" (ie the web and any infrastructure ser=
ver) will take a long time to move to v6 and/or dual stack.<BR>
><BR>
> - new v6-only edges will have to communicate with it. So we need v6-&g=
t;v4 translation in the core<BR>
><BR>
<BR>
MPLS as well as the IETF softwires techniques (the MPLS<BR>
model without using MPLS i.e. tunnel from ingress to egress via<BR>
automated setup tunnels - gre, l2tp, or native IPv4 or IPv6) can or<BR>
will shortly be able to be used to tunnel IPv6 over IPv4 or vice versa.<BR>
softwires in effect treats the non-native core infrastructure as an<BR>
NBMA layer 2.<BR>
<BR>
-----> Mark,<BR>
<BR>
I’m afraid my use of the word “core internet” has confuse=
d you and others.<BR>
I was <B>not</B> talking about core backbone, but about all the infrastruct=
ure that user<BR>
depend on, eg web servers, mail servers, streaming servers, p2p,....<BR>
<BR>
Yes MPLS or Softwires will help you cross those core backbones, but wonR=
17;t do much to<BR>
help content providers to upgrade to v6... The problems are very different =
there.<BR>
I know we are network engineers and as such tend to see every problems as n=
etwork layer.<BR>
However, this is not a layer 3 issue but a layer 7 & 8:<BR>
getting the applications ported to v6 and paying for the upgrade.<BR>
<BR>
<BR>
- Alain.<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
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