nanog mailing list archives
RE: DNS TTL adherence
From: "Sharad Agarwal" <Sharad.Agarwal () microsoft com>
Date: Wed, 15 Mar 2006 20:23:08 -0800
(re-sending because I wasn't on nanog-post)
For example if we change ip addresses will we need to plan on 20% traffic at old site on day1, 10% day2, 5%, day3, and so on...? There are also issues related to proxy servers and browser caching that are independent of DNS we will need to quantify to understand full risk. The more data we have will drive some of our decisions.
You might consider the following paper from IMC 2003: "On the Responsiveness of DNS-based Network Control" by Jeffrey Pang, Aditya Akella, Anees Shaikh, Balachander Krishnamurthy, Srinivasan Seshan, http://www.imconf.net/imc-2004/papers/p21-pang.pdf It sheds some light on how widely DNS TTLs are adhered to. The CDF graphs on the 4th page suggest that you should be fairly safe after a day, though I don't see if the paper specifically states what the largest recorded violation was. Sharad.
Current thread:
- DNS TTL adherence Thurman, Steven (Mar 14)
- Re: DNS TTL adherence ennova2005-nanog (Mar 14)
- Re: DNS TTL adherence Joe Maimon (Mar 14)
- Re: DNS TTL adherence Simon Waters (Mar 15)
- Re: DNS TTL adherence Rodney Joffe (Mar 15)
- Re: DNS TTL adherence Simon Waters (Mar 15)
- Re: DNS TTL adherence Jon Lewis (Mar 15)
- Re: DNS TTL adherence Christopher L. Morrow (Mar 15)
- Re: DNS TTL adherence Joe Maimon (Mar 14)
- Re: DNS TTL adherence ennova2005-nanog (Mar 14)
- <Possible follow-ups>
- FW: DNS TTL adherence Thurman, Steven (Mar 15)
- RE: DNS TTL adherence Sharad Agarwal (Mar 15)
- Re: DNS TTL adherence Simon Waters (Mar 16)
- Re: FW: DNS TTL adherence Igor Gashinsky (Mar 17)
- RE: DNS TTL adherence Sharad Agarwal (Mar 15)