Performance Ad Hoc Modeling Definition RPR function definition

Performance Ad Hoc • Modeling Definition – RPR function definition • Simulation Platform – Simulation framework – Reference network: compare different simulators • Traffic Profile – – – – • As specified in Khaled’s charts Packet size distribution Packet arrival distribution Flow pattern: hub and meshed Transport protocol Service models L 2 Protection interaction Congestion handling Metrics As specified in Khaled’s charts – End to end delay – Jitter – goodput Harry Peng 1

Compare Apples with Apples 1. Define the MAC layer functions • • Compare the performance of the different proposals Simulate in controlled environment • • Same Header Same ingress and egress functions • • • Harry Peng Traffic management (TM): buffer management and scheduling packet processing (PP): header processing Same customer traffic rate Same ring rate Same network topology 2

Simulation Modules/Harness Link Metric Monitors To/From Next Ring_1 node Ring_2 Link Metric Monitors DUT RPR MAC Phy Drop Ingress/ Egress Add TM+PP Ring_1 To/From Ring_2 Next node Customer traffic I/F Traffic Generator/ Sink Monitors Harness • Common harness • different device under test Harry Peng 3

L 2 Congestion/Fairness Proposals “Fairness” Method MAC Proponent Tool 1 Queue at every node ? Luminous NS 2 2 Local fairness with span head control: class Cutthrough Nortel Opnet 3 Local fairness with local control Sa. F Cisco Opnet 4 Central BW broker ? Dynarc ? 5 Local fairness with BW manager per customer ? Fujitsu ? 6 “BW” manager ? Lantern Opnet Sponsor Nortel This is a snap shot: and my understanding only. Presumably each proponent will do their simulation. Harry Peng 4

L 2 Protection 1 Wrap Cisco With L 3 control 2 Source re-direct Luminous Nortel Dynarc Fujitsu L 2 3 ? Lantern Harry Peng 5

L 2 Node Discovery • Performance – efficiency – Fault tolerance – Plug and play etc Harry Peng 6