OSI Model

APPLICATION PRESENTATION SESSION TRANSPORT NETWORK DATA LINK PHYSICAL APPLICATION PRESENTATION SESSION TRANSPORT NETWORK DATA LINK PHYSICAL MIDDLE LAYER HIGHER LAYER Application to Application Application to Application Application to Application Process to Process LOWER LAYER Hop to Hop Switch Hop to Hop Physical Medium Hub and Repeater Router Source to Destination Source to Destination OSI Model's 7 Layers

Data, Protocol & Activities TCP/IP Suit OSI Layers Application Telnet, FTP, SMTP, HTTP, DNS, SNMP, Specific address etc… Session Presentation Transport SCTP, TCP, UDP, Sockets and Ports address Network IP, ARP/RARP, ICMP, IGMP, Logical address Data Link IEEE 802 Standards, TR, FDDI, PPP, Physical address Application Session Presentation Transport Network Data Link Activities To allow access to network resources To establish, manage, and terminate session To Translate, encrypt, and compress data To Provide reliable process-to-process Message delivery and error recovery To move packets from source to destination; to provide internetworking To organize bits into frames; to provide Hop-to-hop delivery Physical Medium, Coax, Fiber, 10base, Wireless Physical To Transmit bits over a medium; to provide Mechanical and electrical specifications

Physical Layer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],10101000000010111 110 From data link layer 10101000000010111 110 To data link layer Physical layer Physical layer Transmission medium

Data Link Layer (Host to Host) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Data H2 T2 From network layer Data H2 T2 To network layer To physical layer From physical layer Data link layer Data link layer

Network Layer (Source to Destination) ,[object Object],[object Object],[object Object],[object Object],Data H3 Packet From transport layer To data link layer Data H3 Packet To transport layer From data link layer Network layer Network layer

Transport Layer (Process to Process) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Segments Data H4 From session layer To network layer Transport layer Data H4 Data H4 Segments Data H4 From session layer From network layer Transport layer Data H4 Data H4

Session Layer (Dialog initiation) ,[object Object],[object Object],[object Object],[object Object],Data H5 From Presentation layer To transport layer Data Data Syn Syn Syn Data H5 To Presentation layer From transport layer Data Data Syn Syn Syn Session layer Session layer

Presentation Layer (dependency) ,[object Object],[object Object],[object Object],[object Object],[object Object],Data H6 From application layer To session layer Data H6 To application layer From session layer presentation layer presentation layer

Application Layer (user level service) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Data H7 USER (Human or Program) To presentation layer Data H7 Application layer Application layer Message Message X.500 FTAM X.400 X.500 FTAM X.400 From presentation layer USER (Human or Program)

OSI Model

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Similar to OSI Model

Similar to OSI Model (20)

Recently uploaded

Recently uploaded (20)

OSI Model