ECEN 619 - PowerPoint PPT Presentation

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ECEN 619

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Title: No Slide Title Author: Bryan J. Baer Last modified by: xizhang Created Date: 1/19/2003 5:30:36 PM Document presentation format: On-screen Show (4:3) – PowerPoint PPT presentation

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Title: ECEN 619


1
ECEN 619 Internet Protocols and Modeling
  • Course Materials Papers, Reference Texts
    Bertsekas/Gallager, Stuber, Stallings, etc
  • Lecture notes and Paper Reading Lists available
    on-line TBA
  • Class Website http//ece.tamu.edu/xizhang/ECEN61
    9
  • Research Interests and Projects
    URLhttp//ece.tamu.edu/xizhang
  • Instructor Professor Xi Zhang
  • E-mail xizhang_at_ece.tamu.edu
  • Office WERC 331D

2
Protocols and the TCP/IP Suite
  • Introductions and Overviews

3
Key Features of a Protocol
  • Syntax
  • Concerns the format of the data blocks
  • Semantics
  • Includes control information for coordination and
    error handling
  • Timing
  • Includes speed matching and sequencing

4
Agents Involved in Communication
  • Applications
  • Exchange data between computers (e.g., electronic
    mail)
  • Computers
  • Connected to networks
  • Networks
  • Transfers data from one computer to another

5
TCP/IP Layers
  • Physical layer
  • Network access layer
  • Internet layer
  • Host-to-host, or transport layer
  • Application layer

6
TCP/IP Physical Layer
  • Covers the physical interface between a data
    transmission device and atransmission medium or
    network
  • Physical layer specifies
  • Characteristics of the transmission medium
  • The nature of the signals
  • The data rate
  • Other related matters

7
TCP/IP Network Access Layer
  • Concerned with the exchange of data between an
    end system and the network to which it's attached
  • Software used depends on type of network
  • Circuit switching
  • Packet switching (e.g., X.25)
  • LANs (e.g., Ethernet)
  • Others

8
TCP/IP Internet Layer
  • Uses internet protocol (IP)
  • Provides routing functions to allow data to
    traverse multiple interconnected networks
  • Implemented in end systems and routers

9
TCP/IP Host-to-Host, or Transport Layer
  • Commonly uses transmission control protocol (tcp)
  • Provides reliability during data exchange
  • Completeness
  • Order

10
TCP/IP Application Layer
  • Logic supports user applications
  • Uses separate modules that are peculiar to each
    different type of application

11
Protocol Data Units (PDUs)
12
Common TCP/IP Applications
  • Simple mail transfer protocol (SMTP)
  • Provides a basic electronic mail facility
  • File Transfer Protocol (FTP)
  • Allows files to be sent from one system to
    another
  • TELNET
  • Provides a remote logon capability
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