[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [RRG] Re: Fast and sparse mapping?



On 21 sep 2008, at 4:08, Brian E Carpenter wrote:

How is this a 'natural limit'? Could you review how you got there? My
totally casual estimate is that 2^27 is reasonable but that we had
better engineer for 2^30.

10 million is my rough estimate for the number of medium-sized and larger
businesses that would exist in a fully developed world of 10 billion
people (i.e. one such business per thousand people). 100 million
is an upper limit - one multihomed network per hundred people - at
that level even the dentist's offices are multihomed.

If you count the number of ASes per capita the low water mark is around 15k people per AS. With a 9G population max that would be 600k ASes so 10M allows for a 15 x increase. That sounds reasonable based on today's notions, but...

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.

Famous last words... It could happen, but only if it's actually possible. Supply creates demand. Another issue could be that in the future not every _organization_, but rather every _office_ becomes multihomed... That would be scary.

But why would we want to hardcode an upper limit, anyway?

--
to unsubscribe send a message to rrg-request@psg.com with the
word 'unsubscribe' in a single line as the message text body.
archive: <http://psg.com/lists/rrg/> & ftp://psg.com/pub/lists/rrg