Transport Layer - Freie Universität Berlin

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Some Tools / netstat ● netstat: Displays protocol statistics and TCP/IP network connections ● Flags (some examples) ● n: display IP addresses ● b: display executable ● r: routing table x:\>netstat -n Active Connections Proto Local Address Foreign Address State TCP 127.0.0.1:3055 127.0.0.1:3056 ESTABLISHED TCP 127.0.0.1:3056 127.0.0.1:3055 ESTABLISHED TCP 160.45.114.21:2114 130.133.8.114:80 CLOSE_WAIT TCP 160.45.114.21:3027 160.45.113.73:1025 ESTABLISHED TCP 160.45.114.21:3029 160.45.113.73:1025 ESTABLISHED TCP 160.45.114.21:3043 160.45.113.89:1200 ESTABLISHED TCP 160.45.114.21:3362 207.46.108.69:1863 ESTABLISHED TCP 160.45.114.21:3704 130.133.8.114:80 CLOSE_WAIT TCP 160.45.114.21:3705 130.133.8.114:80 CLOSE_WAIT TCP 160.45.114.21:3907 160.45.114.28:139 ESTABLISHED TCP 160.45.114.21:3916 160.45.113.100:445 ESTABLISHED Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 8: Transport Layer 8.122
Some Tools ● TTCP – Test TCP ● A tool to measure throughput in a network via TCP and UDP ● Iperf ● Similar tool to test network throughput Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 8: Transport Layer 8.123
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Telematics Chapter 8: Transport Lay
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Design Issues Univ.-Prof. Dr.-Ing.
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Services Provided to the Upper Laye
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Transport Service Primitives ● Pr
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Transport Service Primitives ● A
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Transport Protocol: Addressing ●
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Transport Protocol: Addressing ●
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Transport Protocol: Connection Esta
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Transport Protocol: Connection Rele
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Transport Protocol: Connection Rele
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Transport Protocol: Multiplexing
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Transport Protocol: Crash Recovery
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Transport Protocols in the TCP/IP R
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User Datagram Protocol (UDP) Univ.-
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UDP Header ● Source Port, Destina
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User Datagram Protocol (UDP) Socket
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Example: Java Client (UDP) import j
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Transmission Control Protocol (TCP)
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TCP as a Reliable Connection If the
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TCP: Overview RFCs: 793, 1122, 1323
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Socket Programming in TCP Server si
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Socket programming in TCP Server (o
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Example: Java Server (TCP) import j
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TCP-based Applications File transfe
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The TCP Header ● Source and Desti
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TCP Pseudo Header ● Checksum: ser
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TCP Connection Management: 1. Conne
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TCP Connection Management: 2. Data
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TCP Connection Management TCP clien
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States during a TCP Session State D
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Timer Management with TCP ● TCP u
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Timer Management with TCP: Example
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Timer Management with TCP: Retransm
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Page 71 and 72: Transmission Control Protocol (TCP)
Page 73 and 74: TCP Sender Events ● Data received
Page 75 and 76: TCP Retransmission Scenarios SendBa
Page 77 and 78: TCP ACK generation [RFC 1122, RFC 2
Page 79 and 80: TCP Flow Control: Sliding Window
Page 81 and 82: “Silly Window” Syndrome Header
Page 83 and 84: Flow Control: Network Bottlenecks C
Page 85 and 86: Principles of Congestion Control
Page 87 and 88: Causes/costs of congestion: Scenari
Page 89 and 90: Causes/costs of congestion: Scenari
Page 91 and 92: Approaches towards congestion contr
Page 93 and 94: Case study: ATM ABR congestion cont
Page 95 and 96: TCP congestion control: additive in
Page 97 and 98: TCP Slow Start ● When connection
Page 99 and 100: TCP Slow Start ● When connection
Page 101 and 102: Refinement: Inferring loss ● Afte
Page 103 and 104: Fast Retransmit Timeout Host A Time
Page 105 and 106: Fast Retransmit and Fast Recovery
Page 107 and 108: Summary: TCP Congestion Control ●
Page 109 and 110: Transmission Control Protocol (TCP)
Page 111 and 112: TCP Futures: TCP over “long, fat
Page 113 and 114: TCP Fairness ● Fairness goal: if
Page 115 and 116: Fairness (more) ● Fairness and UD
Page 117 and 118: TCP in Wireless Networks ● Theore
Page 119 and 120: TCP and Security: SYN-Flood ● Dur
Page 121: Some Tools Univ.-Prof. Dr.-Ing. Joc
Page 125 and 126: Stream Control Transmission Protoco
Page 127 and 128: SCTP Multi-Homing ● Ability for a
Page 129 and 130: SCTP Packet Format ● Common Heade
Page 131 and 132: SCTP Chunks ● Type (Examples) ●
Page 133 and 134: SCTP DATA Chunk ● Transmission Se
Page 135 and 136: Datagram Congestion Control Protoco
Page 137 and 138: DCCP vs. TCP/UDP ● Choice of cong
Page 139 and 140: DCCP Generic Header ● Ports ● 1
Page 141 and 142: DCCP State Diagram a la RFC +------
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Transport Layer - Freie Universität Berlin

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