[139494] in North American Network Operators' Group
Re: Implementations/suggestions for Multihoming IPv6 for DSL sites
daemon@ATHENA.MIT.EDU (Luigi Iannone)
Mon Apr 11 08:13:33 2011
From: Luigi Iannone <luigi@net.t-labs.tu-berlin.de>
In-Reply-To: <759FF622-AE3D-419F-952D-416BD0E99594@delong.com>
Date: Mon, 11 Apr 2011 14:12:39 +0200
To: Owen DeLong <owen@delong.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 9, Apr, 2011, at 16:00 , Owen DeLong wrote:
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> Sent from my iPad
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> On Apr 9, 2011, at 4:31 AM, Job Snijders <job@instituut.net> wrote:
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>> Dear All,
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>> On 8 Apr 2011, at 19:34, Lori Jakab wrote:
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>>> On 04/08/2011 06:39 PM, Owen DeLong wrote:
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>>>> LISP can also be a good option. Comes with slightly more overhead =
in terms of
>>>> encapsulation/etc. than the GRE tunnels I use and has limited (if =
any) functionality
>>>> for IPv4 (which GRE supports nicely).
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>>> Maybe you meant ILNP here? AFAIK, IPv4 and IPv6 are equal citizens =
for LISP.
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>> Comparing GRE with LISP is like comparing /etc/hosts with the global =
DNS system. ;-)
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>> I don't understand the comments about LISP and IPv4. IPv4 works just =
excellent with LISP. I have a IPv4 block at home which I multi-home over =
my IPv6-only DSL and IPv4-only FTTH line.=20
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>> LISP is pretty address family agnostic: IPv4 over IPv4, IPv4 over =
IPv6, IPv6 over IPv4, IPv6 over IPv6, all work without problems.=20
>>=20
>> Kind regards,
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>> Job
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> Doing IPv4 LISP on any kind of scale requires significant additional =
prefixes which at this time doesn't seem so practical to me.
This is not accurate IMO. To inject prefixes in the BGP is needed only =
to make non-LISP sites talk to LISP sites. Even there you can =
aggressively aggregate, as explained in draft-ietf-lisp-interworking.
As long as the LISP deployment progress you can even withdraw some =
prefixes from the BGP infrastructure and advertise only a larger =
aggregate in order for legacy site to reach the new LISP site.
Luigi
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> Owen
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