Download - McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 11 User Datagram Protocol (UDP)
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Chapter 11
User DatagramProtocol(UDP)
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Figure 11-1
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Process-to-Process Communication
• Host-to-Host
• Process-to-Process
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Ports
• To define a process a port is needed.
• Tipos:– Ephemeral: random port number defined by the
client.– Well-known port number: defined port number
defined by the server.
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Figure 11-3
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Figure 11-4
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Figure 11-5
(Ephemeral)
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Socket Address
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UDP
• Conectionless, Unreliable.
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Format del Frame
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Checksum
• Incluye: Pseudoheader, UDP Header, Data Comming form the application layer.
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Example
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Operación
• Servicio Sin Conexión.
• NO tiene Control de Flujo.
• No tiene Control de Error
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Encapsulation
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Queues
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Multiplexing-Demultiplexing
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UDP Design
(keeptrack of the open ports)
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Chapter 12
Transmission Control Protocol
(TCP)
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Figure 12-1
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Process-to-Process Communication
• Host-to-Host
• Process-to-Process
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Ports
• To define a process a port is needed.
• Tipos:– Ephemeral: random port number defined by the
client.– Well-known port number: defined port number
defined by the server.
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Figure 12-3
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Well-known ports in TCP
Port Protocol
7 Echo
20 FTP, Data
21 FTP, Control
23 TELNET
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Figure 12-4
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Figure 12-5
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Figure 12-6
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Figure 12-7
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Figure 12-8
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Figure 12-9
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Figure 12-10
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Figure 12-11
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Figure 12-12
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Figure 12-13
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Figure 12-14
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Figure 12-15
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Figure 12-16
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Figure 12-17
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Figure 12-18
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Figure 12-19
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Figure 12-20
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Figure 12-21
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Figure 12-22
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Figure 12-23
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Figure 12-24
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Figure 12-25
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Figure 12-26
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Figure 12-27
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Figure 12-28
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Figure 12-29
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Figure 12-30