[139497] in North American Network Operators' Group
Re: Implementations/suggestions for Multihoming IPv6 for DSL sites
daemon@ATHENA.MIT.EDU (Owen DeLong)
Mon Apr 11 09:24:08 2011
From: Owen DeLong <owen@delong.com>
In-Reply-To: <3065A2EB-804F-452C-A21D-0E0A0994C506@net.t-labs.tu-berlin.de>
Date: Mon, 11 Apr 2011 06:17:30 -0700
To: Luigi Iannone <luigi@net.t-labs.tu-berlin.de>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Apr 11, 2011, at 5:12 AM, Luigi Iannone wrote:
>=20
> On 9, Apr, 2011, at 16:00 , Owen DeLong wrote:
>=20
>>=20
>>=20
>> Sent from my iPad
>>=20
>> On Apr 9, 2011, at 4:31 AM, Job Snijders <job@instituut.net> wrote:
>>=20
>>> Dear All,
>>>=20
>>> On 8 Apr 2011, at 19:34, Lori Jakab wrote:
>>>=20
>>>> On 04/08/2011 06:39 PM, Owen DeLong wrote:
>>>=20
>>>>> 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).
>>>>=20
>>>> Maybe you meant ILNP here? AFAIK, IPv4 and IPv6 are equal citizens =
for LISP.
>>>=20
>>> Comparing GRE with LISP is like comparing /etc/hosts with the global =
DNS system. ;-)
>>>=20
>>> 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
>>>=20
>>> 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,
>>>=20
>>> Job
>>=20
>> Doing IPv4 LISP on any kind of scale requires significant additional =
prefixes which at this time doesn't seem so practical to me.
>=20
> 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.
>=20
> 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.
>=20
> Luigi
>=20
Who said anything about BGP? I was talking about the amount of =
additional IP space needed vs. the
amount of IPv4 free space remaining.
Owen
