Optimizations (continued)
Offload generation/signing of route attestations, e.g., from routers to AS (also reduces vulnerability to compromise of keys)
Background verification of alternate routes
Deferral of verification until route is used
Heuristics to guide which prefixes are aggregated in an UPDATE -- this is aimed at reducing the amount of information that has to be made explicit (see page 19) in when an aggregate is later split into its components.
There are not many different ASes in most AS paths