RE: Ask for some informations

[Sanjeev Chakravarty <schakrav@ics.uci.edu>]

Hi Reda,

> How can a PDP know for instance that a policy has been added by an operator
> to the LDAP DIT and apply it to a certain PEP? Is there something like a
> polling/triggering mechanism?
Sanjeev> When a PEP initiates a COPS connection, it provides a list of
roles it supports to the PDP, eg., Campus Role, Ethernet Role. PDP on
receiving a new
policy from the PMT(or from the LDAP DIT using LDAP extensions) knows the
role that this new policy is added and creates an instance of the Policy
Rule Class(PRI) that is identified by Policy Rule Instance
Identifier(PRID). Using COPS the PDP installs this PRI on to the PEP. 

> How a Device know to which PDP should it send a config reqest?
Sanjeev> COPS is PEP initiated protocol and hence it is suppose to know
to which PDP it wants to connect. It may use SNMP discovery process to get
a list of PDP servers that it may possibly talk to.

> Do you know where can I find some COPS sample code or LDAP repositery
> content exemple?Cause it is really not easy to discover Policy Management
> stuffs and to apply all its principle the day after!!The released IETF/DMTF
> drafts are certainly so useful but it doesn't (I know it's not the goal!)
> show concrete example!
Sanjeev> How about you read my MS thesis draft, titled, "QoS in
Policy-Based Networks: A Detailed Specification," and provide feedback on
the topics you like to discuss further. Would really appreciate any
feedback on my work which is close to completion. There a few examples
considered in the thesis and the work will continue even after I graduate.
Go to my website at "www.ics.uci.edu/~schakrav" and click on the thesis
link. I'm currently reading the book "Policy-Based Networking:Architecture
and Algorithms" by Dinesh C. Verma, which is so far the most comprehensive
material I've found in any book on this topic.

Thanks,

Sanjeev Chakravarty
Corona Networks