nanog mailing list archives
Re: honoring AS-path prepend from a peer or customer?
From: Avi Freedman <freedman () avi netaxs com>
Date: Thu, 18 Feb 1999 22:33:09 -0500 (EST)
done it such that we only did prefix filtering, not any as-path filtering, this allows them to prepend as they wish, just not advert anything other than what we filtered them at.
FYI, this is dangerous. For example - You have a customer A who has a customer B. B is multi-homed to A and 701. B's link to A goes down. So, if A's network is broken, they will send you a given prefix with as-path ^701 B$ or ^1239 701 B$ or ..., depending on how B sees 701. And you will transit it. Shouldn't cause any major damage, but something to be aware of.
- Jared
Avi
Current thread:
- honoring AS-path prepend from a peer or customer? Sanjay Dani (Feb 18)
- <Possible follow-ups>
- Re: honoring AS-path prepend from a peer or customer? Avi Freedman (Feb 18)
- Re: honoring AS-path prepend from a peer or customer? Jared Mauch (Feb 18)
- Re: honoring AS-path prepend from a peer or customer? Avi Freedman (Feb 18)
- Re: honoring AS-path prepend from a peer or customer? Jared Mauch (Feb 18)
- Re: honoring AS-path prepend from a peer or customer? I Am Not An Isp (Feb 19)
- Re: honoring AS-path prepend from a peer or customer? Jared Mauch (Feb 18)
- RE: honoring AS-path prepend from a peer or customer? Martin, Christian (Feb 18)
- Re: honoring AS-path prepend from a peer or customer? Danny McPherson (Feb 18)
- Re: honoring AS-path prepend from a peer or customer? Danny McPherson (Feb 22)