>> rtfm. bgpsec key aggregation is at the descretion of the operator. >> they could use one key to cover 42 ASs. > > I've been reading the presentations and the mailing lists, both of > which imply you should use one key per router for security reasons. > I would tend to agree with that assessment, BTW.
folk have different threat models. yours (and mine) may be propagation of router compromise. for others, it might be a subtle increase in disclosure of router links. contrary to your original assertion, the protocol supports both. randy