nanog mailing list archives
Re: Confussion over multi-homing
From: Austin Schutz <tex () off org>
Date: Thu, 14 Sep 2000 23:47:41 -0700
Yep, this has been a topic here before...no real resolution. You didn't really need to prove the case, it has already been proven.No. From a post I made to this list on 6/22/2000: ++> Here's the deal. If you number out of Provider1's CIDR block ++> but advertise your more-specific to Provider2 and the two Providers ++> touch and Provider1 accepts the more-specific route from Provider2, ++> you should have no problem reaching anyone. ++> ++> Here's the reason: Everyone accepts Provider1's announcement of the block. ++> When your link to P1 is up, any traffic they recieve for your prefix ++> gets routed over that link since they carry your more-specific internally. ++> However, if other providers here the more-specific from P2, they'll ++> send directly via P2 who sends it over the link to you.
But if your chunk of space is greater than /20, the other providers will filter P2's announcement of your space and you are back to square one. Well, at least you won't be cut off from the entire Internet, I guess that's something. Square 1.5. Austin
Current thread:
- Confussion over multi-homing David Lott (Sep 14)
- Re: Confussion over multi-homing Geoffrey Zinderdine (Sep 14)
- Re: Confussion over multi-homing jlewis (Sep 14)
- <Possible follow-ups>
- RE: Confussion over multi-homing Roeland M.J. Meyer (Sep 14)
- RE: Confussion over multi-homing Tony Tauber (Sep 14)
- Re: Confussion over multi-homing Austin Schutz (Sep 15)
- RE: Confussion over multi-homing Tony Tauber (Sep 14)
- RE: Confussion over multi-homing Richard Welty (Sep 14)
- RE: Confussion over multi-homing Paul Froutan (Sep 14)
- Re: Confussion over multi-homing Brantley Jones (Sep 14)
- Re: Confussion over multi-homing dan (Sep 15)
- Re: Confussion over multi-homing Sean Donelan (Sep 14)
- Re: Confussion over multi-homing John Fraizer (Sep 14)
- Re: Confussion over multi-homing Patrick Evans (Sep 15)
- Re: Confussion over multi-homing John Fraizer (Sep 15)
- Re: Confussion over multi-homing John Fraizer (Sep 14)
- RE: Confussion over multi-homing Roeland M.J. Meyer (Sep 15)
- RE: Confussion over multi-homing Dmitri Krioukov (Sep 15)