Re: Question regarding anycasting in CDN setup

2012-02-23 Thread Anurag Bhatia
Great explanation . Thanks everyone (Sent from my mobile device) Anurag Bhatia http://anuragbhatia.com On Feb 9, 2012 1:37 AM, "Joe Provo" wrote: > On Thu, Feb 09, 2012 at 01:28:07AM +0530, Anurag Bhatia wrote: > [snip] > > I have never did such setup, but I assume it works as you say. I wonde

Re: Question regarding anycasting in CDN setup

2012-02-08 Thread Joe Provo
On Thu, Feb 09, 2012 at 01:28:07AM +0530, Anurag Bhatia wrote: [snip] > I have never did such setup, but I assume it works as you say. I wonder how > it finds a US based system from IP quickly (since it's DNS server)? Drop "ip geolocation" or "internet geolocation" into Your Favorite Search Eng

Re: Question regarding anycasting in CDN setup

2012-02-08 Thread Brett Watson
On Feb 8, 2012, at 11:58 AM, Anurag Bhatia wrote: > Mike > > I can also have a single DNS >> server give 192.0.2.80 out to queries sourced from a US IP Address, >> 198.51.100.80 for queries sourced from a German IP Address and >> 203.0.113.80 to queries sourced from a Chinese address (djbdns has

Re: Question regarding anycasting in CDN setup

2012-02-08 Thread Anurag Bhatia
Mike I can also have a single DNS > server give 192.0.2.80 out to queries sourced from a US IP Address, > 198.51.100.80 for queries sourced from a German IP Address and > 203.0.113.80 to queries sourced from a Chinese address (djbdns has a > module for this for example). I have never did such s

Re: Question regarding anycasting in CDN setup

2012-02-08 Thread Anurag Bhatia
Nice explanation! Thanks Mike. Appreciate it. On Thu, Feb 2, 2012 at 6:08 AM, Mike Jones wrote: > On 1 February 2012 20:25, Anurag Bhatia wrote: > > > Now my question here is - why this setup and not simply using having a A > > record for googlehosted.l.googleusercontent.com. which comes fr

Re: Question regarding anycasting in CDN setup

2012-02-01 Thread Mike Jones
On 1 February 2012 20:25, Anurag Bhatia wrote: > Now my question here is - why this setup and not simply using having a A > record for googlehosted.l.googleusercontent.com. which comes from any > anycasted IP address space? Why not anycasting at CDN itself rather then > only at DNS layer? You ar

Re: Question regarding anycasting in CDN setup

2012-02-01 Thread Jared Mauch
On Feb 1, 2012, at 3:25 PM, Anurag Bhatia wrote: > I have a small question and was wondering if someone could help me with > that. > > Question is - why companies like Google, Amazon are having partial > anycasting in CDN setups? E.g if we pick a random hostname from url of > Picasa picture - lh

Re: Question regarding anycasting in CDN setup

2012-02-01 Thread Charles Gucker
On Wed, Feb 1, 2012 at 3:25 PM, Anurag Bhatia wrote: > Hello everyone! > > I have a small question and was wondering if someone could help me with > that. > > Question is - why companies like Google, Amazon are having partial > anycasting in CDN setups? E.g if we pick a random hostname from url of

Question regarding anycasting in CDN setup

2012-02-01 Thread Anurag Bhatia
Hello everyone! I have a small question and was wondering if someone could help me with that. Question is - why companies like Google, Amazon are having partial anycasting in CDN setups? E.g if we pick a random hostname from url of Picasa picture - lh3.googleusercontent.com - this one is further