*nods* I'm obviously a bit biased, but I have some reasoning behind it. Also, 
this is excluding large scale networks like Comcast, AT&T, Charter, etc. that 
do have the scale to have on-net solutions. It's also excluding remote 
locations where there may not be another node for hundreds or thousands of 
miles (Alaska, Hawaii, Caribbean, etc.) 

There are some CDNs that are pushing out on-net boxes and PNIs to networks with 
relatively low usage. We've had networks that were in the process of joining 
the IX get approached by one of the CDNs for a box right on their network. That 
network had under 1G of usage (IIRC) and was joining an IX where the CDN was 
already present. The network declined the box because they didn't want 
something else to manage and would already get the service anyway once on the 
IX. 

Also, from my understanding of multiple CDNs (nothing really proprietary, just 
whatever's been made public) is that different nodes have different content. 
The more traffic a node gets, the more likely they are to have the content the 
end user seeks. Some CDNs also have different platforms on different boxes. If 
an ISP has one box, they may not even have access to all of the platforms that 
would be available in a several box deployment. In these cases, an IX makes 
more sense. 

We've also had CDNs go the PNI route to a network. Sure, a PNI beats an IX in 
that it cuts out a middle man (fiscally and point of failure). However, if the 
networks wouldn't use a substantial portion of the IX port in the first place, 
it's an extra cost that small networks may not have room for or have to choose 
between a PNI and an IX. 


Per the last message, Cloudflare seems to have a similar philosophy. Join 
existing infrastructure where it makes sense, deploy additional nodes 
otherwise. 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 

----- Original Message -----

From: "Tom Paseka via NANOG" <[email protected]> 
To: "Marco Slater" <[email protected]> 
Cc: "NANOG list" <[email protected]> 
Sent: Monday, October 2, 2017 1:21:10 PM 
Subject: Re: isp/cdn caching 

Hi, 

Cloudflare does deploy caches, however we usually look to do so in unique 
locations, ie. where an ISPs network isn't already in reach of one of our 
existing deployments/peering points. 

You can email [email protected] directly if seeking this. 

-Tom 

On Fri, Sep 29, 2017 at 7:22 AM, Marco Slater <[email protected]> wrote: 

> Do they publicly have any more info on this? 
> 
> I thought CloudFlare didn’t consider doing that because of their vast 
> coverage and peering arrangements provided by their PoPs. 
> 
> Regards, 
> Marco Slater 
> 
> > On 29 Sep 2017, at 14:38, <[email protected]> < 
> [email protected]> wrote: 
> > 
> > I think that Cloudflare has a caching solution, but I think they have 
> strict requirements towards the isp in order to install them on their 
> premises. 
> > 
> > Best Regards, 
> > 
> > Michalis Bersimis 
> > 
> > -----Original Message----- 
> > From: NANOG [mailto:[email protected]] On Behalf Of Aaron Gould 
> > Sent: Thursday, September 28, 2017 6:25 PM 
> > To: [email protected] 
> > Subject: isp/cdn caching 
> > 
> > Hi, I've been aware of a few caching providers for a few years now, but 
> I'm learning of others as time goes on. which makes me curious if there are 
> more springing up and gaining popularity. I'm speaking of ISP-type caching 
> whereas the cache provider sends hardware servers and perhaps a switch to 
> the local ISP to install locally in their network. Can someone please send 
> a simple list of what they know is the current players in this ISP Caching 
> space? I'll list the ones I know about and you please let me know of 
> others. This seems to be an evolving/growing thing and I'm curious of 
> where we are today for significant providers and possibly up-and-coming 
> ones that I should know about. (amazon prime has my wondering also.) 
> > 
> > 
> > 
> > Google (GGC) 
> > 
> > Netflix (OCA) 
> > 
> > Akamai (AANP) 
> > 
> > Facebook (FNA) 
> > 
> > Apple (I heard this isn't isp-located like the others, but unsure) 
> > 
> > ? others ? 
> > 
> > ? others ? 
> > 
> > ? others ? 
> > 
> > 
> > 
> > -Aaron Gould 
> > 
> 
> 

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