Re: Executive summary of: RE: hard questions: request routing

[Fred Douglis <douglis@research.att.com>]

At long last I've been able to catch up on the flurry of messages on the CDN 
list wrt routing and forwarding loops.

At the face-to-face in MN, I was in favor of starting with the simple method 
of limiting forwarding, and I still feel that way.  At least for the time 
being, I don't think content providers will be comfortable with arbitrary 
redirection to CDNs they've never heard of, nor will the authoritative CDN.  
Allowing two levels, as Oliver suggested at one point, would permit a "CDN" to 
actually be the aggregate of multiple quasi-independent CDNs with separate DNS 
redirection systems, and I can live with that.  But I've yet to see a 
compelling argument for one of the more complicated approaches.

Fred