nanog mailing list archives
Re: Is the export policy selective under valley-free?
From: William Waites <ww () styx org>
Date: Wed, 3 Sep 2008 19:42:34 +0200
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Le 08-09-03 à 19:26, Valdis.Kletnieks () vt edu a écrit :
OK, I'm looking at this, and having a *little* trouble buying that there's exactly zero or one p2p links - consider the case where the last 'c2p' link is to provider A, who peers with B but not C, and B peers with both A and C, and the first p2c link lands at C. Don't you end up with "cp2 p2p p2p p2c" in that case? Or is there a convention saying we compress the A-B and B-C links into a notational A-C link? Or are we defining A-B or B-C links asbeing a c2p type instead, even though they're peering and not transit?
If B passes along C's routes to A then that is not (in the model) a peering relationship. Only your own and your customers' routes get sent to peers not
routes learned from other peers. So in this case B-C looks like p2c and A-B could be either p2p or c2p.Cases of partial transit, where B might repeat C's routes to peers but not
to upstrem providers are not, AFAIK treated in the model. Cheers, - -w - -- William Waites <ww () styx org> http://www.irl.styx.org/ +49 30 8894 9942 CD70 0498 8AE4 36EA 1CD7 281C 427A 3F36 2130 E9F5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEUEARECAAYFAki+zIoACgkQQno/NiEw6fUxkwCeOf84XppppZk32YxxQdyiCNgW gggAlRe2Gg93sS+/HPgscj9+qiVwQ8c= =oBAp -----END PGP SIGNATURE-----
Current thread:
- Is the export policy selective under valley-free? Kai Chen (Sep 02)
- Re: Is the export policy selective under valley-free? Paul Wall (Sep 02)
- Re: Is the export policy selective under valley-free? William Waites (Sep 03)
- Re: Is the export policy selective under valley-free? Valdis . Kletnieks (Sep 03)
- Re: Is the export policy selective under valley-free? William Waites (Sep 03)
- Re: Is the export policy selective under valley-free? Valdis . Kletnieks (Sep 03)
- Re: Is the export policy selective under valley-free? Iljitsch van Beijnum (Sep 03)
- Re: Is the export policy selective under valley-free? William Waites (Sep 03)
- Re: Is the export policy selective under valley-free? Paul Wall (Sep 02)
- Re: Is the export policy selective under valley-free? William Waites (Sep 03)
- Re: Is the export policy selective under valley-free? Randy Bush (Sep 03)
- Re: Is the export policy selective under valley-free? William Waites (Sep 03)
- Re: Is the export policy selective under valley-free? Randy Bush (Sep 03)
- Re: Is the export policy selective under valley-free? Iljitsch van Beijnum (Sep 03)