Concept of TCP/IPKHNOG 25 January, 2017

Presented by: Mom Sothea

IP Core Network Planning & Design Engineer @ Ezecom Limited &

AEU Cisco Instructor

Email: sotheamom518@gmail.com/ Skype:npic.sothea

Agenda

v The Purpose of the OSI model

v The Physical Layer of the OSI model

v The Data Link Layer of the OSI model

v The Network Layer of the OSI model

v The Transport Layer of the OSI model

v The Session Layer of the OSI model

v The Presentation Layer of the OSI model

v The Application Layer of the OSI model

v The Purpose of TCP/IP stack

v Compares the TCP/IP stack to the OSI model

v Describe Protocol data units

v Encapsulation

v De-Encapsulation

v Encapsulation and De-Encapsulation Across a Network

Why a Layered Network Model?

v Reduces complexity

v Standardizes interfaces

v Facilitates modular engineering

v Ensures interoperable technology

v Accelerates evolution

v Simplifies teaching and learning

Appication

Presentation

Session

Transport

Network

Data Link

Physical

PDU Names

Layer 1: The Physical Layer

Binary Transmission:

Layer 2: The Data Link Layer

Layer 3: The Network Layer

Layer 4: The Transport Layer

Layer 5: The Session Layer

Layer 6: The Presentation Layer

Layer 7: The Application Layer

TCP/IP Stack

TCP/IP Stack vs the OSI Model

Protocol Data Units

Encapsulation

De-Encapsulation

Encapsulation and De-Encapsulation Across a Network