Performance%20Ad%20Hoc

1
Performance Ad Hoc

• Modeling Definition
• RPR function definition
• Simulation Platform
• Simulation framework
• Reference network compare different simulators
• Traffic Profile As specified in Khaleds 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 Khaleds charts
• End to end delay
• Jitter
• goodput

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

3
Simulation Modules/Harness
Link Metric Monitors
Link Metric Monitors
DUT
To/From Next node
Ring_1
RPR MAC
To/From Next node
Ring_1
Phy
Phy
Ring_2
Ring_2
Drop
Add
TMPP
Ingress/ Egress
Customer traffic I/F
Harness
Traffic Generator/ Sink Monitors

• Common harness
• different device under test

4
L2 Congestion/Fairness Proposals
Fairness Method
Proponent
Tool
Sponsor
MAC
1 Queue at every node ? Luminous NS2
2 Local fairness with span head control class Cut-through Nortel Opnet Nortel
3 Local fairness with local control SaF Cisco Opnet
4 Central BW broker ? Dynarc ?
5 Local fairness with BW manager per customer ? Fujitsu ?
6 BW manager ? Lantern Opnet

• This is a snap shot and my understanding only.
  Presumably each proponent will do their
  simulation.

5
L2 Protection
1 Wrap Cisco With L3 control
2 Source re-direct LuminousNortel Dynarc Fujitsu L2
3 ? Lantern
6
L2 Node Discovery

• Performance
• efficiency
• Fault tolerance
• Plug and play
• etc