10 Jun
2015
10 Jun
'15
9:31 a.m.
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