CDN & ISP (was: Re: Google wants to be your Internet)

Michal Krsek michal at
Mon Jan 22 08:26:25 UTC 2007

Hi Adrian,

> I've had a few ISPs out here in Australia indicate interest in a cache 
> that
> could do the normal stuff (http, rtsp, wma) and some of the p2p stuff 
> (bittorrent
> especially) with a smattering of QoS/shaping/control - but not cost 
> upwards of
> USD$100,000 a box. Lots of interest, no commitment.

Here in central europe we had caching friendly environment from 1997 till 
2001 due of transit lines pricing. Few yaers ago prices for upstream 
connectivity fell and from this time there is no interest for caching. I've 
discussed this with several nationwide ISPs in .cz and found these reasons:

a) caching systems are not easy to implement and maintain (another system 
for configuration)
b) possible conflict with content owners
c) they want to sell as much as possible of bandwidth
d) they want to have their network fully transparent

I don't want to judge these answers, just FYI.

> It doesn't help (at least in Australia) where the wholesale model of ADSL 
> isn't
> content-replication-friendly: we have to buy ATM or ethernet pipes to 
> upstreams
> and then receive each session via L2TP. Fine from an aggregation point of 
> view,
> but missing the true usefuless of content replication and caching - right 
> at
> the point where your customers connect in.

Same here.

> (Disclaimer: I'm one of the Squid developers. I'm getting an increasing 
> amount
> of interest from CDN/content origination players but none from ISPs. I'd 
> love
> to know why ISPs don't view caching as a viable option in today's world 
> and
> what we could to do make it easier for y'all.)

Please see points (a)-(d). I think there can be also point (e).

Some telcos want to play triple-play game (Internet, telephony and IPTV). 
They want to move their users back from the Internet to relativelly safe 
revenue area (television channel distribution via IPTV).

                Michal Krsek

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