I am looking to put together a comprehensive BGP communities guideline and policies for an AS starting from a blank slate. When I say comprehensive, I mean covers *everything* that is known to be best practice such as: Route Type Prepends Learned from Peers Learned from Peers Peers Learned from Transits Learned from Customers Learned from Customers Customers Advertise to Peers Advertise to Peers Peers Advertise to Transits Advertise to Customers Advertise to Customers Customers Local Preferences No exports No advertise Leaking to Peers/Transits/Customers Null-Route Region/POP And anything else I may have overlooked. Naturally, the resulting policy needs to be easily implementable on current IOS. My own experience and the publicly available information doesnt even come close to a consensus on the objectives that should be handled, let alone the number patterns preferred to be used. What I am looking for is a best practice guide on community policy setup. Barring that, I plan to continue examining every publicly published guideline to try to produce one, but likely as not it will suffer from the all to common human failing of shortsightedness. Thanks, Joe