nanog mailing list archives
Re: Confussion over multi-homing
From: jlewis () lewis org
Date: Fri, 15 Sep 2000 01:38:17 -0400 (EDT)
On Thu, 14 Sep 2000, David Lott wrote:
ISP. I also understand that there are filters at the /20 boundaries in order to minimize the size of the routing table.
This depends on who's filters you're talking about. I suspect most smaller ISPs filter at the /24 boundry if at all on their transit or peering links. It's the bigger NSPs you have to worry about. You can find some (ok...not very much really) info on this on the www.nanog.org site. Verio has a reputation for having one of the stricter filter policies, and even they accept /24 and shorter in large portions of traditional C space (ARIN has allocated /20's and larger blocks from this space)...meaning depending on what portion of 0/0 your space is in, you may get lucky and be able to be seen as blocks as small as /24. IIRC, some of the blocks ARIN is now allocating from are in the "you're screwed" ranges where Verio filters on /20 and shorter...so if you get space from an ISP that recently got space in that range, you're screwed. ---------------------------------------------------------------------- Jon Lewis *jlewis () lewis org*| I route System Administrator | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________
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 14)
(Thread continues...)