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The Internet Protocols

The Internet Protocols. COMT 539. Protocol Overview. E-Mail HTTP (WWW) Remote Login File Transfer. TCP UDP. IP ICMP ARP RARP (Auxiliary Services). X.25 Packet Layer. Ethernet, X.25, HDLC etc. Network Hierarchy.

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The Internet Protocols

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  1. The Internet Protocols COMT 539

  2. Protocol Overview E-Mail HTTP (WWW) Remote Login File Transfer TCP UDP IP ICMP ARP RARP (Auxiliary Services) X.25 Packet Layer Ethernet, X.25, HDLC etc.

  3. Network Hierarchy “Backbone” “Gateway”

  4. Connection Types in TCP/IP Transport Layer TCP: Connection Oriented UDP: Connection-less Connection-less Network Layer Data Link Layer and Physical Network Depends on the network

  5. IP Header Version Header Len Class of Service Total Length Identification D M Fragment Position Timeout Protocol Header Checksum Source Address Destination Address

  6. UDP Header Source Port Destination Port Checksum Length

  7. TCP Header Source Port Destination Port Sequence Number Acknowledgement Number misc Flags Window (flow cntrl) Checksum Urgent Options

  8. IP Addresses are 32 bits long, originally using one of three formats:

  9. Address Notation • Dotted Decimal: • 192.149.89.61/24 = 1100 0000 1001 0101 0101 1001 0011 1101 = C0 95 59 3D • 132.235.75.17/24 • The Network: • 192.149.89.0 • Broadcast on that network: • 192.149.89.255

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