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ppt

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  • Can not produce (in the sender) or consume (in the receiver) efficiently in the user space. In the sender, TCP has few new data to send; in the receiver, TCP receiver-buffer fill up. New technologies: multi-core CPU, PCI-Express etc
  • Accurate bandwidth estimation is difficult Network provide very little network status information to network end systems. Network condition change instantaneously.
  • When networks are congested, router/switch buffer overflows lead to packet drops. such as dirty fibers, malfunctioning line cards, flawed Ethernet connections

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