> Single AS worldwide is fine with or without a backbone. > > Which is "preferable" is up to you, your situation, and your personal > tastes. (I guess one could argue that wasting AS numbers, or > polluting the table with lots of AS numbers is bad or un-ashetically > pleasing, but I think you should do whatever fits your situation > anyway.) >
Depends on your routing requirements, for example, you need to rely on a default or disable as_path checks (or re-write the path) to be able to see your other clusters (if they do need to communicate)... -- David Freedman Group Network Engineering Claranet Group
