nanog mailing list archives
Re: /24 multihoming issue
From: John Payne <john () sackheads org>
Date: Thu, 20 Oct 2005 21:56:49 -0400
On Oct 20, 2005, at 2:07 PM, Randy Bush wrote:
Is 7018 preferring 19094 over 701 regardless of AS-PATH length?the convention is that, if 19094 is a customer of 7018, then it will always prefer it.and it was confirmed that this is the case for the prefix in questionAnd this is a good reason not to cross "tiers" of your transit providers. Either have both "transit free" or both should have transit.why? when it get up to tier-1s it will be the same, the one(s) who heard it from customers will prefer the customers. and tier-Ns should be preferring customer routes as well; see discussion here between vaf, asp, and me in about '96.
slipping back into the tier terminology which i was trying to avoid...it's only a problem if you want to do inbound traffic engineering. If the tier 2 is well connected to tier 1s (for example Internap), it's typically going to get more inbound traffic than the tier 1 connection because the tier 2 is preferred as a customer in a bunch of tier 1s.
Current thread:
- Re: /24 multihoming issue, (continued)
- Re: /24 multihoming issue Christopher L. Morrow (Oct 19)
- Re: /24 multihoming issue Elmar K. Bins (Oct 20)
- Re: /24 multihoming issue Kyaw Khine (Oct 19)
- Re: /24 multihoming issue Christopher L. Morrow (Oct 19)
- Re: /24 multihoming issue Kyaw Khine (Oct 19)
- RE: /24 multihoming issue Ejay Hire (Oct 20)
- Re: /24 multihoming issue Kyaw Khine (Oct 19)
- Re: /24 multihoming issue Randy Bush (Oct 20)
- Re: /24 multihoming issue John Payne (Oct 20)
- Re: /24 multihoming issue Randy Bush (Oct 20)
- Re: /24 multihoming issue John Payne (Oct 20)
- Re: /24 multihoming issue Randy Bush (Oct 20)