On 6-dec-2005, at 15:59, Sascha Lenz wrote:
In particular, noone came up with an equal solution to BGP Multihoming with "PI"-space, which i hoped for back then.
Well, you haven't been paying attention, because I've presented "provider-internal aggregation based on geography" at two different RIPE meetings a while ago.
Actually, i did pay attention, but why do you think i consider that as an equal solution to BGP Multihoming with "PI"-space?
I don't understand what you're trying to say... But I'm happy that someone noticed what I was trying to say back then.
It's _ONE_ alternative solution one might suggest, but still no reason for disallowing anyone in the globally distributed prefix table.
To me, it's pretty obvious that if we can have aggregatable PI space, then that's an excellent reason to NOT have non-aggregatable PI space. Note however that the aggregation is optional in my plan: everyone can implement it in their own network independent of what everyone else does. In the beginning, there certainly won't be any reason to aggregate so this type of PI is completely equivalent to regular PI.
Why do i want this at all?
Well, I don't know. I can get by with my PA /48 just fine. But apparently some people like to multihome and some of them insist that shim6 doesn't address their needs. And others want a portable prefix for other reasons.
Because there are globally distributed prefixes right now, there is no geographically based assigment in sight anywhere
So? If we really want this we can start doing this in a manner of weeks: the only requirement is that the RIRs start giving out prefixes that are aggregatable. In practice, it will take about the same amount of time as any other policy change.
Do you expect everyone with a prefix today to give it back and renumber?
Today, there is no PI in IPv6 so that's a moot question.
BUT - if someone insists on BGP Multihoming with worldwide prefix distribution for whatever reason he/she might have, noone must be forbidden to do so!
I'd rather have a working internet without PI than a non-working one with it. Nobody can guarantuee that we won't run into trouble with PI so the only way we can be sure we won't have this trouble is to not have PI. If you want PI as it exists today in IPv4, the burden is on you to show, yes, SHOW that it can scale for decades to come.
The main problem is just people who want to tell "me" (not literally) what's best for "my" network, and disallow "me" in the pond with the big fish.
Do whatever you want, as long as you don't do it in my routing table. The internet only works as long as 99% of all people carry 99% of all routes. When a sizeable number of people starts filtering a sizeable number of routes for whatever reason, either technical (won't fit in their routers) or political (don't agree with the policies) then we're in knee-deep brown stuff. -- I've written another book! http://www.runningipv6.net/