The TCP Minimum RTO Revisited

We re-examine the two reasons for the conservative 1-second Minimum TCP-RTO to protect against spurious timeouts: i) the OS clock granularity and ii) the Delayed ACKs. We find that reason (i) is canceled in modern OSs; we carefully design a mechanism to deal with reason (ii). Simulation results show that in next generation’s high-speed, wirelessaccess networks, TCP-RTO should not be limited by a fixed, conservative lower bound. Key words: TCP, Minimum RTO, High Speed Links, Last Mile Wireless

• Type: Conference
• Year: 2007
• Where: NETWORKING
• Authors: Ioannis Psaras, Vassilis Tsaoussidis
• Keywords: 1-second Minimum Tcp-rto, Computer Networks, NETWORKING 2007, OS Clock Granularity, Spurious Timeouts