Layered Architecture

05/01/09 MCSE201 : Communication Network Layered Architecture Anjan.K II Sem M.Tech Dept of CSE M.S.R.I.T

05/01/09 MCSE201 : Communication Network Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],05/01/09 MCSE201 : Communication Network

05/01/09 MCSE201 : Communication Network Need For Layering ,[object Object],[object Object],[object Object],[object Object],[object Object]

05/01/09 MCSE201 : Communication Network 05/01/09 MCSE201 : Communication Network The ISO/OSI Reference Model Need For Standard Architecture is various vendors with various architectures. Hence ISO: International Standards Organization (Estd in 1947) ‏ OSI: Open Systems Interconnection (1970’s) ‏ Copyright © Computer Networks by Larry Peterson ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],Problem 05/01/09 MCSE201 : Communication Network Copyright © Communication Networks by Leon Garcia 1.5MB File Application 1.5MB File MTU 1 MSS+ Header MTU 2 MTU 1028 ……… ..

05/01/09 MCSE201 : Communication Network Application Programming Interfaces(API)- Sockets ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],05/01/09 MCSE201 : Communication Network

05/01/09 MCSE201 : Communication Network Socket System Calls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],05/01/09 MCSE201 : Communication Network

05/01/09 MCSE201 : Communication Network Application Protocol Examples Application Protocol Underlying Transport Protocol Electronic Mail SMTP [RFC 2821] TCP Web HTTP [RFC 1945] TCP File Transfer FTP [RFC 959] TCP Streaming Multimedia RTP [RFC 1889] TCP/UDP Internet Telephony SIP [RFC 3261] UDP Remote terminal access Telnet [RFC 854] TCP Domain Name server DNS [RFC 883] UDP

05/01/09 MCSE201 : Communication Network File Transfer Protocol (FTP) [RFC 959] ‏ ,[object Object],[object Object],[object Object],[object Object],[object Object],FTP client FTP server TCP control connection port 21 TCP data connection port 20

05/01/09 MCSE201 : Communication Network IP Utilities 05/01/09 MCSE201 : Communication Network ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

05/01/09 MCSE201 : Communication Network Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],05/01/09 MCSE201 : Communication Network

05/01/09 MCSE201 : Communication Network References [1] Larry L Peterson, “Communication Networks”,3 rd Edition [2] S.keshav, “An Engineering Approach to Computer Networking”,Pearson Education [3] Andrew.S Tannenbaum, “Computer Network”, 4th Edition [4] Leon Garcia et.al., “Communication Networks”, 2 nd Edition [5] RFC’s From http://www.ietf.org [6] Leslie Miller, “ISO Reference Model of OSI” ACM transaction in Nov 1981 05/01/09 MCSE201 : Communication Network

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