nanog mailing list archives
Re: who gets a /32 [Re: IPV6 renumbering painless?]
From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Tue, 23 Nov 2004 00:45:24 +0100
On 22-nov-04, at 21:42, Valdis.Kletnieks () vt edu wrote:
that network topology and geography don'tcorrelate. My counter-objection is that the correlation doesn't have tobe 1 to be able to take advantage of it when it's present.
On the other hand, unless you have some way to *enforce* a higher correlationthan we already have, how do you propose to get a better result than we currently (mostly accidentally) get via CIDR aggregation?
There is no enforcing as such. All the gory details are in http://www.muada.com/drafts/draft-van-beijnum-multi6-isp-int-aggr -01.txt
For instance, 212.x.y.z is "known" to be on one continent, and so on - buthow do you leverage that into a 212/8 routing entry?
Well, suppose we know 212/8 is used in Europe. A network that is present in say, North America and Europe then has the routers in Europe that talk to the routers in America filter out all 212/8 more specifics and only announce the aggregate instead. In the simple version this only works if there is full interconnection for all 212/8 destination in Europe. In the more complex version there is selective deaggregation for some destinations to overcome lack of local peering.
Current thread:
- Re: BBC does IPv6 ;) (Was: large multi-site enterprises and PI prefix [Re: who gets a /32), (continued)
- Re: BBC does IPv6 ;) (Was: large multi-site enterprises and PI prefix [Re: who gets a /32) Fred Baker (Nov 27)
- Re: BBC does IPv6 ;) (Was: large multi-site enterprises and PI prefix [Re: who gets a /32) Owen DeLong (Nov 25)
- Re: large multi-site enterprises and PI prefix [Re: who gets a /32 [Re: IPV6 renumbering painless?]] Owen DeLong (Nov 22)
- Re: large multi-site enterprises and PI prefix [Re: who gets a /32 [Re: IPV6 renumbering painless?]] Chris Kuethe (Nov 22)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Owen DeLong (Nov 19)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Iljitsch van Beijnum (Nov 20)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Owen DeLong (Nov 20)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Michael . Dillon (Nov 22)
- Message not available
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Iljitsch van Beijnum (Nov 22)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Valdis . Kletnieks (Nov 22)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Iljitsch van Beijnum (Nov 22)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Elmar K. Bins (Nov 23)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Iljitsch van Beijnum (Nov 30)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Alex Bligh (Nov 20)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Eric A. Hall (Nov 20)
- Re: who gets a /32 [Re: IPV6 renumbering painless?] Owen DeLong (Nov 20)