An Example

• Imagine a long-distance T1 line:

  • bandwidth: 1.544Mb/s, RTT about 45ms
  • bw-delay product about 70Kb (8700 bytes)

• Assuming Stop&Wait w/frame size 1KB:

  • performance is ~ (1frame)/(1 RTT) =
  • 1KB/(0.045s) = 182Kb/s
  • limits performance to about 1/8 of link

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