1. Performance Ad Hoc Modeling Definition Simulation Platform
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
L2 Protection interaction
Congestion handling
Metrics As specified in Khaled’s charts
End to end delay
Jitter
goodput
Harry Peng

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

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

4. L2 Congestion/Fairness Proposals
“Fairness” Method
MAC
Proponent
Tool
Sponsor 1
Queue at every node ?
Luminous
NS2 2
Local fairness with span head control: class
Cut-through
Nortel
Opnet 3
Local fairness with local control
SaF
Cisco 4
Central BW broker
Dynarc 5
Local fairness with BW manager per customer
Fujitsu 6
“BW” manager
Lantern
This is a snap shot: and my understanding only. Presumably each proponent will do their simulation.
Harry Peng

5. L2 Protection 1 Wrap Cisco With L3 control 2 Source re-direct
LuminousNortel
Dynarc
Fujitsu L2 3 ?
Lantern
Harry Peng

6. L2 Node Discovery Performance etc efficiency Fault tolerance
Plug and play
etc
Harry Peng