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novemver18 - Lecture Message Delivery to Processes Internet...

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1 Lecture, November 20, 2002 Message Delivery to Processes Internet Addressing Address resolution protocol (ARP) Dynamic host reconfiguration protocol (DHCP) Tunneling Mobile IP Routing in Virtual Circuit Networks
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2 Message delivery to processes Host Process Network Network Router Network interface Port IP address = (NetworkId, HostId)
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3 Addressing Address spaces Flat Hierarchical Addressing Modes Unicast Multicast Broadcast Anycast
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4 Internet addressing IPv4 address encoding – classes Problems and solutions Subnetting Classless address encoding Address resolution protocol (ARP) Dynamic host reconfiguration protocol (DHCP) Tunneling Mobile IP
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5 IPv4 packet format 32-bit destination IP address options (if any) 32-bit source IP address header checksum packet length (bytes) fragment identifier Payload 12-bit fragment offset ToS upper layer prot time to live flags hlen version 0 16 31 8
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6 IPv4 address encoding A B C D 0 NetworkId 110 NetworkId HostId HostId HostId 1110 Multicast address 10 NetworkId 0 8 16 31 E 1111 Reserved 24
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