NSLP for Metering Configuration Signaling (Metering NSLP) draft-dressler-nsis-metering-nslp-00 (update of …accounting-nslp-00) Falko Dressler, Georg Carle, Changpeng Fan, Cornelia Kappler, Hannes Tschofenig

Outline What does a Metering NSLP do? What is in the Draft? What do we learn from it for current NSIS work? Next Steps

What does a Metering NSLP do? Dynamic configuration of Metering Entities (ME) Application scenarios Monitoring Charging Intrusion Detection Configuration Data includes What Metering Entities should participate in the metering What to meter Where to send metered data Use e.g. ipfix to send metered data Correlation identifier for metered data ME not participating Initial GIMPS signaling ME ME ME ME ME Participating ME GIMPS Messaging Associations

What is in the Draft Scenarios Requirements Why solve the problem with NSIS Basic protocol design Comparison with other NSLPs Impact on GIMPS API

What do we learn from it for current NSIS work? (I) Structurally, M-NSLP similar to QoS-NSLP CONFIGURE, QUERY, RESPONSE, NOTIFY Differences Must be possible for Metering Entities to pull out of a signaling session And, upon a configuration update, to re-enter later Similar to NATFW NSLP, when only NATs should be included Interaction of Metering Entities E.g. want exactly two entities measuring delay; Signaling message needs to carry information on how many entities have already been found

What do we learn from it for current NSIS work? (II) Impact on GIMPS API M-NSLP processing must be able to tell GIMPS not to install a messaging association, but to pull out of the signaling chain for this session Also needed by NAT-FW, supported by Source-SII-Handle When configuration of ongoing session is changed, other / more Metering Entities may need to be included in the signaling chain. NI tells GIMPS that a rerouting event occurred GIMPS should however not use this information to warn other M-NSLP sessions or other NSLPs!

Next Steps More details on configuration information Use it to validate basic protocol design