$$ 

A B the maximum flow between two adjacent routers are set as 1. 6:3 Router 4 EX Router 1 FA 6:3 Router 2 Router 5 Figure 3. Flow control. Router 6. Router 3 (a) Determine flow control using Max-Min fairness. (b) Explain why your flow control is optimal. (Note: you need to illustrate 3 possible scenarios, which are increasing the flow for A/B/C respectively.) B C