User Manual
UMN:CLI
V8102
357
Deficit Round Robin Queing
Queue1
(50% b/w, Quantum [1] = 1000
Queue2
(25% b/w, Quantum [2] = 500
Queue3
(25% b/w, Quantum [3] = 500
Scheduler
Q1
Q3
Q2
Fig. 9.15
Deficit Round Robin
Weighted Round Robin (WRR)
WRR processes packets as much as weight. Processing the packets that have higher
priority is the same way as strict priority queuing. However, it passes to next stage after
processing as configured weight so that it is possible to configure for packet process to
the packets having higher priority. However, there’s a limitation of providing differentiated
service from those existing service.
3
7
6
7
7
4
1
The process in WRR when packets having the Queue numbers
3
3
4
7
Lowest priority
highest priority
7
7
7
7
6
4
4
3
3
3
1
Weight = 1
Weight = 1
Weight = 1
Weight = 1
Weight = 2
Weighted, Round-Robin Scheduler
Fig. 9.16
Weighted Round Robin
