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 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]
<mailto:[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] <javascript:_e(%7B%7D,'cvml','[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
