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Weighted round-robin

Weighted round-robin and weighted deficit round-robin are examples of schedulers that allow to envenly distribute bandwidth among different incoming flows.

Consider a (d)WRR scheduler with three queues: Q1, Q2 and Q3. This scheduler is attached to a 1 Mbps output link and the flows that are classifed in the three queues also arrive at a rate of 1 Mbps.

שאלה 1: WRR
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The scheduler is configured as follows :

  • Q1 has a weight of 25
  • Q2 has a weight of 50
  • Q3 has a weight of 25

The scheduler receives the following packet flows

  • Q1 receives traffic at a rate of 400 Kbps
  • Q2 receives traffic at a rate of 600 Kbps
  • Q3 receives traffic at a rate of 800 Kbps

Please provide your three answers using the Add Answer button. Each answer must be written as \(Qi=123\) where \(Qi\) is the identifier of the queue and 123 its bandwidth in kbps.

שאלה 2: WRR
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The scheduler is configured as follows :

  • Q1 has a weight of 25
  • Q2 has a weight of 50
  • Q3 has a weight of 25

The scheduler receives the following packet flows

  • Q1 receives traffic at a rate of 600 Kbps
  • Q2 receives traffic at a rate of 600 Kbps
  • Q3 does not receive any packet

Please provide your two answers using the Add Answer button. Each answer must be written as \(Qi=123\) where \(Qi\) is the identifier of the queue and 123 its bandwidth in kbps.

שאלה 3: WRR
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The scheduler is configured as follows :

  • Q1 has a weight of 25
  • Q2 has a weight of 50
  • Q3 has a weight of 25

The scheduler receives the following packet flows

  • Q1 receives traffic at a rate of 100 Kbps
  • Q2 receives traffic at a rate of 600 Kbps
  • Q3 receives traffic at a rate of 500 Kbps

Please provide your three answers using the Add Answer button. Each answer must be written as \(Qi=123\) where \(Qi\) is the identifier of the queue and 123 its bandwidth in kbps.

שאלה 4: WRR
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The scheduler is configured as follows :

  • Q1 has a weight of 75
  • Q2 has a weight of 24
  • Q3 has a weight of 1

The scheduler receives the following packet flows

  • Q1 receives traffic at a rate of 200 Kbps
  • Q2 receives traffic at a rate of 240 Kbps
  • Q3 receives traffic at a rate of 800 Kbps

Please provide your three answers using the Add Answer button. Each answer must be written as \(Qi=123\) where \(Qi\) is the identifier of the queue and 123 its bandwidth in kbps.