On 12/06/2014 10:08 PM, Ca By wrote:
On Saturday, December 6, 2014, Yannis Nikolopoulos <[email protected]
<mailto:[email protected]>> wrote:
Hello,
IPv4-only CGN was never on the table to begin with. DS-lite
doesn't seem to scale so well, that's why we were focusing on the
more stateless approaches. We have
I hear this argument frequently (stateful bad, stateless good) but it
is seldom coupled with deployment experience.
Makes you wonder why some of the largest ipv6-only deployments are
stateful (ds-lite, 464xlat, ...) and the stateless solutions are not
even published as rfcs or deployed at scale yet?
for one, both MAP-E and LW4o6 are quite fresh compared to -for example-
DS-lite. Personally, I (theoretically) prefer lw4o6 over ds-lite, not
because it's stateless, but because it "less stateful" (since it carries
less state in the AFTR)
cheers,
Yannis
p.s: the word in softwires is that both lw4o6 and MAP-E will become RFCs
pretty soon
been running a native (dual-stack) IPv6 network for years, so
you're right, IPv4-only CGN would be a move backwards.
I also agree about testing, PoCs and friendly trials but we don't
have the luxury to test a few solutions before deciding, as time
is of essence
cheers,
Yannis
p.s: 464xlat was never considered because I always thought of it
as a mobile solution.
On 12/06/2014 06:24 PM, Ca By wrote:
Hi,
On Friday, December 5, 2014, Yannis Nikolopoulos <[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote:
On 12/05/2014 05:48 PM, Lorenzo Colitti wrote:
On Fri, Dec 5, 2014 at 10:30 PM, Yannis Nikolopoulos
<[email protected]> wrote:
I'm wondering, have people deployed IPv6-only
residential services? I know of a couple of DS-lite
implementations, but we'd be more interested to hear
about network operators deploying either MAP or
lightweight 4over6 (not just trials though, but actual
commercial services)
Softbank (Japan) launched an IPv4-over-IPv6 service in
August 2012. They use what looks to me to be an IPv4-in-IPv6
tunnel, but could be just a particular case of MAP-E with no
portset. The service is up to 1G down / 1G up and they do
encapsulation in hardware in a proprietary CPE.
I remember them deploying 6rd, but I could be wrong.
We're considering MAP or lw4o6. The
Those and ds-lite are good. Ds-lite is clearly more deployed and
mature on many fronts.
problem is that our management prefers "proven" solutions
(i.e deployed by other ISPs) and the only proven solutions
I'm aware of are full blown CGN solutions.
Please take cgn off the table if possible.
At this point i will suggest that you also consider rfc6877. It
is better than ipv4 only cgn since major traffic source (netflix,
fb, google, youtube....) are already ipv6 end to end.
t-mobile us has deployed rfc6877 to over 25 million
subscribers. It is baked and works well for mobile, but you
asked for residential. Rfc6877 also covers the fixed line case too.
Anyhow, the solution that is best for your network is the one
that proves itself best in your own testing and proof of concept.
This will show deal-breakers and vapor ware
Proof of concepts and friendly trials with real customers are
much more insightful than anything you will learn on this list.
I would avoid 6rd unless you have and L1 or L2 limitation that
prevents native ipv6.
I would avoid ipv4 only cgn entirely since the roi will be so
poor, it is a move backwards and you will have to do the real
ipv6 project again in a few years.
That's why I was trying to find commercially deployed cases
based on either MAP or lw4o6. Alternatively, It would also be
of value if I could prove that, for example, DS-lite is not
being deployed either :)
cheers,
Yannis
