nanog mailing list archives
Re: What DNS Is Not
From: Glen Turner <gdt () gdt id au>
Date: Tue, 17 Nov 2009 13:01:41 +1030
On 10/11/09 01:58, Jack Bates wrote:
And different CDN's behave differently, depending on how they deliver content, support provider interconnects, etc. I'd hardly call many of them DNS lies, as they do resolve you to the appropriate IP, and if that IP disappears, try and quickly get you to another appropriate IP.
It depends what you mean by "appropriate". It may not be "least cost" or "closest", and that can be a rude shock when the CDN traffic suddenly costs you A$5/GB (delivered from the US by undersea cable) rather than $0 (delivered from an in-country peer). DNS is the wrong answer, simply because there's no way for the user to express *their* policy. But since there no CDN support in HTTP..... -- Glen Turner <http://www.gdt.id.au/~gdt/>
Current thread:
- Re: What DNS Is Not, (continued)
- Re: What DNS Is Not bmanning (Nov 09)
- Re: What DNS Is Not Patrick W. Gilmore (Nov 09)
- Re: What DNS Is Not Edward Lewis (Nov 09)
- Re: What DNS Is Not Patrick W. Gilmore (Nov 09)
- Re: What DNS Is Not Jorge Amodio (Nov 09)
- Re: What DNS Is Not Martin Hannigan (Nov 09)
- Re: What DNS Is Not bmanning (Nov 09)
- Re: What DNS Is Not Jorge Amodio (Nov 08)
- Re: What DNS Is Not Glen Turner (Nov 16)
- Re: What DNS Is Not Brandon Galbraith (Nov 16)
- Re: What DNS Is Not Jack Bates (Nov 16)
- Re: What DNS Is Not Andrew Cox (Nov 19)
- Re: What DNS Is Not Randy Bush (Nov 19)
- Re: What DNS Is Not Matthew Palmer (Nov 20)
- Re: What DNS Is Not Eduardo A. Suárez (Nov 19)
- Re: What DNS Is Not Mark Andrews (Nov 19)
- Re: What DNS Is Not Jorge Amodio (Nov 19)
- Re: What DNS Is Not Jorge Amodio (Nov 25)