Data%20Communications%20I%20

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Data Communications I II91.413
-91.414Project SequenceTom Costello
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Protocol Layers

• Networks are complex!
• many pieces
• hosts
• routers
• links of various media
• applications
• protocols
• hardware, software

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• distributedentities implement layer functions
  at each node
• entities perform actions, exchange messages with
  peers

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91.413 Internet protocol stack- emphasis on
principles -

• application supporting network apps
• FTP, SMTP, HTTP
• API sockets
• transport host-host data transfer
• TCP, UDP
• network routing of datagrams from source to
  destination
• IP, routing protocols, IP multicast ( brief)
• link data transfer between neighboring network
  elements
• PPP, Ethernet, ARP, LAN addressing
• physical bits on the wire
• wire can be fiber, copper, air

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91.413

• Study the structure and relationships within and
  between the layers in the TCP/IP protocol stack
• Generally
• 2 in-class examinations
• bi-weekly homework assignments
• 2 or 3 programming assignments
• socket project ( introductory)
• a routing algorithm implementation given some
  skeleton code

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91.414balances basic principles and practice

• Network Management
• Network Security
• Multimedia Networking
• Wireless and Mobile Networks
• Tracking an IETF committee ( and reporting )
• Laboratory projects ( approx. 6)
• 2 In-class examinations
• 2 -3 projects ( code)

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91.414 Project examples

• Capture and Decode Ethernet Frames
• A student proposed enhancement of project 1
• must be data communications related
• ( i.e. Dont add a GUI).
• Consider adding another parsing capability
• (e.g. RTP, SNMP, or ).
• You might add a network management-related
  feature.
• You might want to add something related to the
  IETF group you tracked.

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91.414 Labs

• Use labs in OS 309 to configure and manage
  networks hands-on
• 4 pcs, 4 routers, 4 switches
• labs require configuring S/W and cabling of
  variety of networks

• Different labs address
• utilities ttcp, netstat, ifconfig, pping,
  tcpdump, ethereal
• ARP, static host addresses, ifconfig , ethereal
• SNMP tools
• MIBS, MIB Objects
• IP Multicast