filtering /48 is going to be necessary

Owen DeLong owen at delong.com
Sat Mar 10 18:47:24 CST 2012


On Mar 10, 2012, at 4:00 PM, Joel jaeggli wrote:

> On 3/10/12 14:47 , Sven Olaf Kamphuis wrote:
>> let's say, there is 6 billion people in the world.. if they all have 1
>> route table entry (average ;) i see no technical limitations on anything
>> produced AFTER 2008 actually.
> 
> Over in ipv4 land there are ~40k entities that appear in the dfz
> internet... Of those somewhat less than half (16k) announce just one
> prefix. The top 30 ASes by route count on the other hand are 10% of the
> table.
> 
> I don't a see a problem with the small guys. I don't see the little guys
> as a source of fib scaling problem becuase oddly enough they aren't.
> 
> The actors causing the most impact on the size of my fib are by in large
> on this mailing list...
> 
> joel

I expect that many of those are not nearly as likely to create as many routes in IPv6.

Hence my belief that the problem is generally solved for some time to come once we can stop carrying the bloated obsolete IPv4 table for legacy support.

Owen




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