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CS335 Networking & Network Administration

CS335 Networking & Network Administration. Tuesday April 27, 2010. Summary. Basic networking Hardware in LAN and WAN’s Addressing and routing. Internetworking . No single networking technology is best for all needs Universal service Allows arbitrary pairs of computers to communicate

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CS335 Networking & Network Administration

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  1. CS335 Networking &Network Administration Tuesday April 27, 2010

  2. Summary • Basic networking • Hardware in LAN and WAN’s • Addressing and routing

  3. Internetworking • No single networking technology is best for all needs • Universal service • Allows arbitrary pairs of computers to communicate • Incompatibilities among network hardware and physical addressing prevent connecting bridged networks with arbitrary technologies • Internetworking provides universal service among heterogeneous networks

  4. Physical network connections with routers • Routers have a processor and memory • Have separate I/O interfaces for each network to which it connects

  5. Internet architecture • One router could connect these networks • Routers can have multiple interfaces • Redundancy improves reliability

  6. Achieving universal service • Goal of internetworking is universal service across heterogeneous networks • Internet protocols make this possible • It is a virtual network made up of many small networks • The communication system is an abstraction

  7. TCP/IP internet protocols • Compare this to 7 layer OSI model

  8. IP Internet Protocol Addresses

  9. Dotted decimal

  10. Address classes

  11. Special IP Addresses • Reserved, not assigned

  12. Example

  13. CIDR (Classless Inter-domain Routing)

  14. Domain Registry • http://www.internic.net • http://www.arin.net • http://www.networksolutions.com

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