1. Queue Scheduler RR v.s. SP v.s. WFQ 佇列排程

2. Basic Schedulers Round robin (RR) – 輪流、公平 Strict Priority (SP) – 壓倒性優先 Weight Fair Queue (WFQ) – 彈性優先

3. Question Observe traffic with the high priority in 3 schedulers

4. Overview Set the scheduler of bottleneck Interface –RR, SP, and WFQ Bottleneck Interface Low Priority (bit =0) High Priority (bit =1)

5. Step 1 Setup topology –6 nodes, 5 links, 2 CBRs Set bottleneck interface –Bandwidth: 100kbps –Delay: 10 ms

6. Step 2 Set the scheduler of bottleneck interface to Round Robin

7. Step 3 Set 2 CBRs –Precedence Value=1,0

8. Results RR WFQ SP