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Chapter 19
Internet Architecture and TCP/IP |
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Internet Protocol (IP) Packet
Delivery between Networks |
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Internet Control Message Transmission
and Message Control
Protocol (ICMP) between Hosts and Gateways |
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Address Resolution Protocol Request
Physical Address from
(ARP) Source |
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Reverse ARP ARP Response |
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User Datagram Protocol Best Effort
Service (Connectionless,
(UDP) no Acknowledgement) |
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Transmission Control Protocol Reliable
Service (Connection)
(TCP) |
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Simple Network Management
Diagnostics
Protocol (SNMP) |
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Simple
Mail Transfer Protocol (SMPT, Port 25) |
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Send email |
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POP3 (port 110) for access to received email |
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Telnet – Remote login (port 23) |
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File Transfer Protocol (FTP, port 20,21, more) |
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HTTP – Web Pages (Client/Server, port 80) |
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Domain Name System (DNS) |
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Class A –
1.0.0.0 to 126.255.255.255 |
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126 large organizations (all gone) |
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Class B – 128.0.0.0 to 191.255.255.255 |
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214 networks each with 216
hosts |
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Class C – 192.0.0.0 to 223.255.255.255 |
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221 small networks , 255 hosts |
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Separates a network address from the Host
address |
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Notes