Re: anycasting behind different ASNs?

[Deepak Jain]

An easy way around this is to be consistent about your transit and 
peering arrangements across locations.  If your anycast network has 
transit from a network in one location, get transit from them in your 
other locations, and let hot potato routing do its thing.  For cases 
where this isn't practical, or where you want more control over who is 
sending traffic to a node, declare the node to be a "peering only" node 
and make sure your peers aren't leaking the anycast routes to their out 
of region upstreams.


Or prepend (gasp!) like the Dickens for your "peering only" node to have 
transit, but be the route chosen after transit/connectivity to your 
"transit/peering ok" node fails.

Deepak