SPPI PIB-ACCESS clause

["Andreas Polyrakis" <apolyr@cs.toronto.edu>]

Hello,

I need some clarifications about the PIB-ACCESS clause:
I understand that "notify" and "install-notify" PRCs are sent to the
PDP through REQ messages, and "report-only" through RPT messages.

But what triggers an unsolicited RPT message (apart from a failure RPT, or
an RPT that reports changes to the hardware -  I talk about RPTs that report
normal
usage, such as accounting RPTs, mentioned in COPS-PR draft)? Can the PDP ask
for
an RPT for a specific PRC? the SPPI draft also mentions:
'PRCs having the "install" and/or "notify" characteristics may also
be included in reports generated by the PEP'. How can this happen?
Does this imply that the PDP has a mechanism to query the PIB and ask
for a specific PRI?

Thanks,
Andreas