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DISTRIBUTED COMPUTING

DISTRIBUTED COMPUTING. Sunita Mahajan , Principal, Institute of Computer Science, MET League of Colleges, Mumbai Seema Shah , Principal, Vidyalankar Institute of Technology, Mumbai University . Chapter - 2 Network Communication . Topics . LAN and WAN technologies

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DISTRIBUTED COMPUTING

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  1. DISTRIBUTED COMPUTING Sunita Mahajan, Principal, Institute of Computer Science, MET League of Colleges, Mumbai Seema Shah, Principal, Vidyalankar Institute of Technology, Mumbai University

  2. Chapter - 2Network Communication

  3. Topics • LAN and WAN technologies • Protocols for Network Systems • Asynchronous Transfer Mode • Protocols for Distributed Systems • VMTP(Versatile message transfer protocol) • FLIP(Fast local internet protocol)

  4. LAN and WAN Technologies

  5. LAN and WAN Technologies • Introduction to LAN and WAN

  6. Classification of Networks • Based on number of interconnected nodes and type of communication link used • LAN, • MAN, • WAN, • WLAN • Internetwork

  7. Evolution of network transmission speeds

  8. MAN

  9. Classification of WLAN

  10. FSO:-free space opstics an optical communication technology that uses light propagating in free space to transmit data between two points • LMDS:-Local multipoint distribution service • GSM:- Global system for mobile communication • FLEX:- paging network • FDDI- Fibre distributed data interface fiber-optic networking technology utilizing a ring topology to provide local area network connectivity

  11. Internetworks

  12. Wireless application protocols- WAP

  13. Protocols for Network Systems

  14. Protocols for network systems • Protocol is a formal set of rules and conventions that governs how computers exchange information over the network medium. • Protocol supports transparency • Protocols for networks • ISO/OSI • IP

  15. ISO/OSI Reference Model

  16. Functions of OSI layers

  17. Functions of OSI Layers

  18. Elements in layered service: • Service user • Service provider • Service Access Point (SAP)

  19. Control information in OSI layers

  20. Data encapsulation in OSI protocol data

  21. Internet Protocol

  22. OSI vs IP

  23. Major functions of the IP protocol

  24. Major functions of the IP protocol

  25. Major functions of the IP protocol

  26. TCP and IP layers at a glance

  27. Asynchronous Transfer Mode

  28. Introduction to ATM • Uses fixed length packets called cells, • Achieves fast speed by avoiding flow control and error checking.

  29. ATM classification • ATM can be classified as CBR and VBR based on the type and volume of data transmitted.

  30. ATM virtual circuit

  31. ATM Reference Model

  32. ATM Layer functions

  33. ATM Standards • Standard A: • The User-Network Interface (UNI) standard contains the Generic Flow Control field (GFC) and Virtual Path Identifier (VPI) one-octet field. • Standard B: • The Network-Network Interface (NNI) has one and a half octets long VPI but does not contain the GFC field.

  34. ATM layer standards

  35. Functions of the ATM Layer field headers

  36. ATM Adaptation Layers

  37. ATM Layer functions

  38. Protocols for Distributed Systems

  39. Protocols for Distributed Systems • VMTP- • Versatile Message Transfer Protocol • FLIP— • Fast local Internet Protocol

  40. Requirements of Distributed Systems • Transparency • Client server based communication • Group communication • Security • Network management • Scalability

  41. VMTP- Versatile Message Transfer Protocol • Supports request response behavior • Provides transparency and group communication facility, selective retransmission mechanism, rate based control flow control • Supports execution of non idempotent operations and conditional delivery of real time communication.

  42. VMTP packet format

  43. VMTP client server interaction

  44. FLIP--Fast local Internet Protocol • Connectionless protocol • Provides • Transparency for process migration • Secure message delivery • Group management- private and public addresses • Network management • Efficient client server based communication

  45. FLIP box interface

  46. Summary • LAN and WAN technologies • Protocols for Network Systems • Asynchronous Transfer Mode • Protocols for Distributed Systems • VMTP • FLIP

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