COPS-PR questions

[NOISETTE Yoann FTRD/DMI/CAE <yoann.noisette@rd.francetelecom.fr>]

Hi all,

In spite of all the information and clarifications available on the list, I
still have questions about  COPS-PR and PIB:

* In draft "draft-ietf-rap-frameworkpib-02.txt", section 3.2 related to
"Multiple PIB instances" 

>>Although many PIB instances may be configured on a device (the maximum
number of these instances being determined by the device itself) only one of
them can be active at any given time, the active one being selected by the
PDP.  
The device in this sentence is it the one embedding the PEP, as I understand
it ? In this case, does it maintain the PIB instances locally (just like a
device maintains MIBs for SNMP) or the PIB instances are they only
maintained by the server ?
To justify the maintenance of PIBs locally, I'm thinking that these can be
used by the LPDP for issuing local decisions, or by the PEP within the
context of synchronization operations with a PDP, but I'm not pretty sure
PIBs are really maintained locally as they are always represented residing
at the policy server and these roles may be assumed by the configuration
file of the device where the PEP resides.

>>To facilitate this selection, the Framework PIB supports an attribute to
make a PIB instance the active one and, similarly, to report the active PIB
instance to the PDP in a COPS request message. 
Doesn't this sound a bit restrictive as a given PEP may support many
Client-Types requiring different PIB instances to be active in the same time
?

* Concerning the way for a PDP to request for a new request-state, my
understanding is:
	- The PDP sends a Decision message with the Request flag set, using
one Client-Handle among the already existing ones (for the Client-Type
concerned). This Handle is chosen at random.
	- The PEP then issues a Request message with a new Handle to create
the new request-state. The request-state whose Handle has been used by the
PDP in its Decision message isn't affected by this operation in any way.
	- The PDP sends an Install Decision message for this new
request-state with the Handle provided by the PEP.
	- The PEP sends a Report message returning the result of the
operation.

Is this right ??

Thanks in advance for your answers.

Yoann


NOISETTE Yoann
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