The rule was confirmed by Google itself by email. Offcourse to determine all the prefixes there will be R n D time to time as some new prefixes may come or go. But 90% of traffic still can be identify by mention way , offcourse its Google serving content end of the day we can't be 100% sure by which ip traffic will be served but 90% approx.
Regards Vijay A. On Oct 20, 2015 12:51 PM, "Mark Tinka" <[email protected]> wrote: > > > On 20/Oct/15 09:15, Vijay S wrote: > > Google will deploy ggc node only if you have more than 1gig Google traffic > . > > > This is not a hard & fast rule. > > Also you your upstream provider has ggc node its not hard to identify them > as those nodes use only one pool of /26 ip addresses. > > > Again, not cast in stone. I've seen different prefix lengths in the wild. > > Also, note that in some markets, GGC traffic may be hitting a network from > a peer, and not an upstream. > > The best way for the OP to check where his Youtube traffic "could be" > coming from is: > > http://redirector.c.youtube.com/report_mapping > > But even this is not a sure thing, as Google will serve video from a GGC > node based on several factors such as latency, if the video is cached > there, how many times the video is being requested, the DNS resolver in use > by the client, e.t.c. > > Mark. > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
