On Wed, 28 Oct 2009, Per Heldal wrote:
On 10/28/2009 11:22 AM, konradpl@zt.piotrkow.tpsa.pl wrote:
aggregation?
No change - if you today advertise prefix you will still advertise it with the same mask. The only change is that geocommunity will be added.
If you today advertise more specific prefix from different country you will add different geocommunity to show to the world that origin country for the whole less specific from LIR database is not applicable to it.
Konrad Plich
And how will those networks who only see my aggregate be able to know the exact location of all my specifics?
If you do not avertise somewhere your more specyfic mens that prfix do not need different treatment than your global less specyfic. I can't imagine situation when you want part of your network to be routed in the same way like the rest of the network and at the same time to have different CDN that will be feeding it because of geolocation.
What you're suggesting is just one more incomplete source of information from which geoloc services can try to collect some coherent information (along with dns and inetnum-db). I read this thread as a request to help provide guaranteed accurate geoloc info, and BGP isn't the place for that.
BGP is the most coherent protocol with real reason of dividing traffic: different location=different traffic flow. BGP shows traffic flow and links state change. That is the information CDNs deserve. Additionaly it can be altered, is fast and automatic. Konrad Plich