View Single Post
Old 30-04-2011, 22:11   #20
Ignitionnet
Inactive
 
Join Date: Jun 2008
Location: Leeds, West Yorkshire
Age: 47
Posts: 13,995
Ignitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny stars
Ignitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny starsIgnitionnet has a pair of shiny stars
Re: VM Routing and CloudFlare.com

Quote:
Originally Posted by Chrysalis View Post
ntl have a history of rubbish like this, I remember been routed to france then germany to traffic to the usa years back. Thanks for the attempt at educating me on BGP but BGP as shown in the document you linked ultimately works how its been configured to work. So VM have made a concious decision to prefer US routing over EU routing to a EU destination.
No conscious routing decision made, this is an anycast network, it's not an EU destination it is advertised out of multiple geographical areas.

Do recheck the BGP link I posted, it will make everything make more sense.

In summary according to BGP there's nothing to choose between both paths, so it's entirely down to the internal routing within the VM network to the external paths. The internal VM network will see two equal cost paths to the end destination so will take whatever is its preferred path internally to the transit.

It's quite possible that forcing parts of the network to use the EU node is actually what requires a conscious decision.
Ignitionnet is offline   Reply With Quote