Re: IPv4 sunset date revised : 2009-02-05

[bmanning () vacation karoshi com]

On Fri, Oct 22, 2010 at 11:21:36AM -0700, Cameron Byrne wrote:
> On Fri, Oct 22, 2010 at 10:54 AM,  <bmanning () vacation karoshi com> wrote:
> > On Fri, Oct 22, 2010 at 09:42:50AM -0700, Cameron Byrne wrote:
> > > On Thu, Oct 21, 2010 at 10:20 PM, George Bonser <gbonser () seven com> wrote:
> > > > > -----Original Message-----
> > > > > From: Christopher Morrow > Sent: Thursday, October 21, 2010 9:49 PM
> > > > > To: bmanning
> > > > > Cc: NANOG
> > > > > Subject: Re: IPv4 sunset date revised : 2009-02-05
> > > >
> > > >
> > > > > (now I'm teasing.. .Bill where's your docs on this fantastic new
> > > > > teknowlogie?)
> > > >
> > > > I found it here:
> > > >
> > > > http://www.ivi2.org/
> > > >
> > > > But the readme is a bit confusing:
> > > >
> > > > http://www.ivi2.org/code/00-ivi0.5-README
> > > >
> > > > Trying to figure out how they map a /70 v6 prefix to a /30 v4 prefix
> > > > assuming the mapping is to be 1-1
> > >
> > > Right, 1 to 1 does not solve any IPv4 exhaustion problems.
> >
> >
> >        ah... but the trick is to only need enough IPv4 in the pool
> >        to dynamically talk to the Internet.  Native v6 to Native v6
> >        never has to drop back to the Internet, It uses native v6
> >        paths.  So the larger the v6 uptake, the fewer Internet addreses
> >        you'll need to keep around in your pool.
> >
> >
> > > Going back to the title of the thread, IVI does not help you sunset
> > > IPv4 since the same amount of IPv4 is required.
> >
> >        See above.
>
> So works, just not at a large scale.  For larger scale, you need
> address sharing like NAT64.


        depends on your definition of "large" scale.
        for cernet2 ---

        "The grid over IPv6 covers 20 universities distributed in 13 cities, and 
        the aggregation capability is high above 15 trillion time/sec, and the 
        storage capability above 150TB."

        "CNGI-CERNET2 backbone runs IPv6 protocol and connects 25 PoPs distributed 
        in 20 cities in China with the speed of 2.5Gbps/10Gbps. Meanwhile, the transmission 
        rate of Beijing-Wuhan-Guangzhou and Wuhan-Nanjing-Shanghai is 10Gbps. Each 
        PoP provides the 1Gbps/2.5Gbps/10Gbps access capacity for the access network. 

        "Since the opening in 2004, CNGI-CERNET2 backbone has connected more than 200 
        IPv6 access networks of universities and R&D institutes in China, supported 
        technical trials and application demonstration, and provided excellent environment 
        for world-wide next generation Internet research."

        So, yeah... for these smaller, regional networks, its a good fit. For you big
        guys, you may need something else.

--bill