[address-policy-wg] IPv6 PI request is turned down for my multihomed hosting facility - Why?

Hi,

On Wed, Mar 30, 2011 at 01:18:44PM +0200, Erik Bais wrote:
> As LIR's don't have the requirement to multihome their IP space, means that
> the community is in agreement that this PI IPv6 space required a hurdle in
> order to stop a wild-growth on the IPv6 routing table growth, however if
> someone pays their way into the community (become a LIR), nobody cares
> anymore about the routing table growth and we gladly take your money and
> proceed. 

That (money) is not the specific point why there is no multihoming 
requirement for a LIR.

Consider a LIR with 4000 customers that wants to change upstream - they
not only have to renumber their own network, but also renumber 4000 
customers, which is roughly 4001 times the amount of work compared to 
"one end customer needs to renumber".

This community has decided that the burden of renumbering every now and
then is considered acceptable for an end customer (given that we need to
balance with the routing table, and there are MANY MORE end customers than
LIRs - the routing system will not be able to handle "every end customer
is using PI space"), but that LIRs are to be "the aggregation points" in 
the routing system, and the routing system will handle "1 route per LIR"
just fine.  

Earlier proposals saw a strict limitation to "at maximum 8192 Top Level
Aggregates are permitted into the routing system", but nobody has ever
been able to define "who is an important-enough ISP to get a TLA and 
who is not, and has to closely tie their business to a competitor" - so
we changed that to "every LIR is considered equally important and can
get their own address block" (with an implied "to number their customers").


I'm not saying that we can't change the way it is now, mainly trying to 
explain how things came to be.

Gert Doering
        -- APWG chair
-- 
did you enable IPv6 on something today...?

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