[ANCP] Support of multicast information reporting and accounting

[Tom Taylor <tom111.taylor at bell.net>]

The requirements listed below come from the framework document. I assume that 
these requirements are common to all of the capabilities I described in my 
previous message. Or would someone suggest that they should be 
separately-negotiated capabilities?

   R-17  The ANCP MUST allow the AN to send an Information Report
         message to the NAS whenever replication of a multicast flow on
         a particular Access Port start or ends.

   R-18  The ANCP MUST allow the AN to send an Information Report
         message to the NAS indicating the multicast traffic volume that
         has been replicated on that port.

   R-19  The ANCP MUST allow the NAS to indicate to the AN whether or
         not multicast accounting is needed for a multicast flow on a
         particular Access Port.

   R-20  In case multicast accounting is needed for a multicast flow on
         a particular Access Port, the ANCP MUST allow the NAS to
         indicate to the AN whether or not additional volume accounting
         information is required.

   R-23  The ANCP MUST allow the NAS to query the AN to obtain
         information on what multicast flows are currently being
         replicated on a given Access Port, what Access Ports are
         currently receiving a given multicast flow, or what multicast
         flows are currently replicated on each Access Port.

Tom Taylor