What is the right choice? · Constraints limit us to aIMD Fairness Line X Improves or keeps fairness User 2s constant at Allocation each step AIMD moves towards optimal Efficiency Line point User 1s Allocation x, Lecture 19: TCP Congestion ControlLecture 19: TCP Congestion Control 5 What is the Right Choice? • Constraints limit us to AIMD • Improves or keeps fairness constant at each step • AIMD moves towards optimal point x0 x1 x2 Efficiency Line Fairness Line User 1’s Allocation x1 User 2’s Allocation x2