nanog mailing list archives
Re: /8s and filtering
From: David Schwartz <davids () webmaster com>
Date: Tue, 10 Dec 2002 02:58:18 -0800
I was also curious about this - if I am a customer who wants to multihome and can justify only a /24, I would go to an ISP which has an allocation from the Class C space rather than one from the Class A space.
It doesn't matter. For all practical purposes, basement multihomers only care that their two or three providers have their route.
Do ISPs get to choose where the allocation comes from?
Ask your ISP if they'll let you choose. But it usually doesn't matter, if you can only justify a /24, you'll find about the same filtering policies in both traditional class A space and class C space. But again, it doesn't matter. So long as each of your providers will honor your route (and why wouldn't they, you're paying them to) you shouldn't have a problem. Just pick your most reliable provider, and the one you're pretty sure you're going to stay with the longest, and get your IP space from them. Make sure they don't mind you advertising your block through other providers. And give some thought to hiring a competent consultant to help you. You can hire a consultant even if you are the consultant. In fact, no competent consultant would do otherwise outside his or her area of expertise. Don't learn to multihome at your client's expense. ;) DS
Current thread:
- /8s and filtering Harsha Narayan (Dec 10)
- Re: /8s and filtering David Schwartz (Dec 10)
- Re: /8s and filtering Marshall Eubanks (Dec 10)
- Re: /8s and filtering bdragon (Dec 10)
- Re: /8s and filtering Marshall Eubanks (Dec 10)
- Re: /8s and filtering bdragon (Dec 10)
- <Possible follow-ups>
- Re: FW: /8s and filtering Forrest (Dec 10)
- Re: FW: /8s and filtering Harsha Narayan (Dec 10)
- Re: FW: /8s and filtering N (Dec 10)
- Re: FW: /8s and filtering Forrest (Dec 10)
- Re: FW: /8s and filtering David Schwartz (Dec 10)
- Re: FW: /8s and filtering Harsha Narayan (Dec 10)
- Re: FW: /8s and filtering bmanning (Dec 10)
- Re: /8s and filtering David Schwartz (Dec 10)