[RRG] Billions of micronets / EID prefixes

[Robin Whittle <rw@firstpr.com.au>]

I agree with David Conrad, (Re: Fast and sparse mapping?) responding
to Brian Carpenter:

>> I don't think we need to design for a world where most domestic
>> subscribers are multihomed, or care in the least if they get a
>> new IP address each time they connect.

> I would classify this as a failure of imagination. If RRG is
> indeed aiming at 10 to 20 years in the future, I would be quite
> astonished if an underlying assumption is that the way the
> Internet is today is the way it will be one to two decades in the
> future, just bigger.
>
> My assumption is that as people become more and more dependent on
> Internet connectivity for their day-to-day lives, the less
> interested they will be in periodic outages.  When the myriad
> devices in your house depend on being connected to the Internet
> and you have a wide variety of layer 2 technologies over which to
> connect (e.g., WiMax, FTTH, Cable, DSL, and their successors), I
> fully expect most domestic subscribers to be multihomed.
> Actually, I expect it to be worse than that -- I can very easily
> imagine multi-homed PANs connected to multiple providers via
> cell phone-as-router-equivalents.
>
> As such, in my opinion, a design that does not anticipate (or at
> least cannot scale with) massive multihoming would be a waste of
> time.

The most obvious mass-scale use of what I call "Scalable PI" (SPI)
space would be a separate EID prefix (LISP) or micronet (Ivip) for
each handheld device - with every person on the planet having one of
these things, currently known as "cell-phones".

That would be a very large number of micronets - such as 10 billion.
 However, the rate of mapping updates is not necessarily
extraordinarily high, since generally a mapping update will only be
required if the device moves more than 1000km or so.  This is the
"TTR" (Translating Tunnel Router) approach to mobility:

  http://www.firstpr.com.au/ip/ivip/TTR-Mobility.pdf


  - Robin


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