Re: what about the users re: NAT444 or ?

[Lyle Giese <lyle () lcrcomputer net>]

Can we really push an IPv6 agenda for CDN's when IPv6 routing at high 
backend levels is still not complete?  I certainly don't have the 
'clout' to push that, but full routing between Cogent and HE needs to be 
fixed.

Lyle Giese
LCR Computer Services, Inc.

On 09/08/11 10:04, Christian de Larrinaga wrote:
> I wonder if the discussion as useful as it is isn't forgetting that the edge of Internet has a stake in getting this 
> right too! This is not just an ISP problem but one where content providers and services that is the users need to get from 
> here to there in good order.
>
> So
>
> What can users do to encourage ISPs to deploy v6 to them?
> What can users do to ease the pain in reaching IPv4 only sites once they are on IPv6 tails?
>
> Is there not a bit of CPE needed here? What should the CPE do? and not do? should it deprecate NAT/PAT when it receives 
> 1918 allocation from a CGN?
> and less technically but relevant I think is to ask about cost? who pays?
>
>
> Christian
>
> On 8 Sep 2011, at 15:02, Cameron Byrne wrote:
>
> > On Sep 8, 2011 1:47 AM, "Leigh Porter"<leigh.porter () ukbroadband com>  wrote:
> > > > -----Original Message-----
> > > > From: Owen DeLong [mailto:owen () delong com]
> > > > Sent: 08 September 2011 01:22
> > > > To: Leigh Porter
> > > > Cc: Seth Mos; NANOG
> > > > Subject: Re: NAT444 or ?
> > > >
> > > > > Considering that offices, schools etc regularly have far more than 10
> > > > users per IP, I think this limit is a little low. I've happily had
> > > > around 300 per public IP address on a large WiFi network, granted these
> > > > are all different kinds of users, it is just something that operational
> > > > experience will have to demonstrate.
> > > > >
> > > > Yes, but, you are counting individual users whereas at the NAT444
> > > > level, what's really being counted is end-customer sites not individual
> > > > users, so the term
> > > > "users" is a bit misleading in the context. A given end-customer site
> > > > may be from 1 to 50 or more individual users.
> > >
> > > Indeed, my users are using LTE dongles mostly so I expect they will be
> > single users. At the moment on the WiMAX network I see around 35 sessions
> > from a WiMAX modem on average rising to about 50 at peak times. These are a
> > combination of individual users and "home modems".
> > > We had some older modems that had integrated NAT that was broken and
> > locked up the modem at 200 sessions. Then some old base station software
> > died at about 10K sessions. So we monitor these things now..
> > > > > I would love to avoid NAT444, I do not see a viable way around it at
> > > > the moment. Unless the Department of Work and Pensions release their /8
> > > > that is ;-)
> > > > >
> > > >
> > > > The best mitigation really is to get IPv6 deployed as rapidly and
> > > > widely as possible. The more stuff can go native IPv6, the less depends
> > > > on fragile NAT444.
> > >
> > > Absolutely. Even things like google maps, if that can be dumped on v6,
> > it'll save a load of sessions from people. The sooner services such as
> > Microsoft Update turn on v6 the better as well. I would also like the CDNs
> > to be able to deliver content in v6 (even if the main page is v4) which
> > again will reduce the traffic that has to traverse any NAT.
> > > Soon, I think content providers (and providers of other services on the
> > 'net) will roll v6 because of the performance increase as v6 will not have
> > to traverse all this NAT and be subject to session limits, timeouts and
> > such.
> > >
> >
> > What do you mean by performance increase? If performance equals latency, v4
> > will win for a long while still. Cgn does not add measurable latency.
> >
> > Cb
> > > --
> > > Leigh
> > >
> > >
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