EECS 122, Lecture 27
Where we are…
Scheduling of Best-Effort Traffic
Max-Min Fairness using GPS
What this means…
Weighted Round Robin
Deficit Round Robin (DRR)
DRR Example
PGPS (Pkt-by-pkt GPS) and WFQ
Guaranteed Service Connections
Looking a bit closer…
An Example
Example (cont’d)
Virtual Clock
Delay-Earliest Due Date (EDD)
Jitter-EDD
Rate Controlled Scheduling
RC Scheduling Implementation Issues
Packet Drop Strategies
Degree of Aggregation
Drop Priorities
Drop Early or on Overload
Drop Position
QoS Summary
The Real World
QoS in ATM: Service Categories
ATM Traffic Parameters
ATM QoS Parameters
Use of Parameters by Category
QoS Components in ATM
Shaping and UPC
Cell Loss Priority
Connection Admission Control
Admission Control
Source Models
Equivalent Capacity
Email: kfall@cs.berkeley.edu
Home Page: http://www-inst.eecs.berkeley.edu/~ee122