Lectures Computer networking تمرین 3 نمره. پژوهش عملیاتی 2 نمره.

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Presentation transcript:

Lectures Computer networking تمرین 3 نمره. پژوهش عملیاتی 2 نمره. پایان ترم 15 نمره. غیبت فقط 15 نمره پایان ترم 9/18/2018 Hajrasouliha_2015

9/18/2018 Hajrasouliha_2015

Protocol layers, Service models Lecture 4 Protocol layers, Service models 9/18/2018 Hajrasouliha_2015

OSI Versus TCP/IP 1.5 Protocol layers, Service models The Roadmap Continues 1.5 Protocol layers, Service models OSI Versus TCP/IP 9/18/2018 Hajrasouliha_2015

First :Why networks need Layering Methods? En/Farsi Fr/Dutch OLLA OLLA OLLA 9/18/2018 Hajrasouliha_2015

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To Recap OSI Services: What is known as: Datagrams are called: 9/18/2018 Hajrasouliha_2015

: How 2 Apps Communicate across the Layers? 9/18/2018 Hajrasouliha_2015

What is present at each Layer? : 9/18/2018 Hajrasouliha_2015

How to remember OSI Layers? : 9/18/2018 Hajrasouliha_2015

Internet protocol stack application: supporting network applications FTP, SMTP, HTTP transport: process-process data transfer TCP, UDP network: routing of datagrams from source to destination IP, routing protocols link: data transfer between neighboring network elements Ethernet, 802.11i (WiFi), PPP physical: bits “on the wire” application transport network link physical Introduction

2 1 TCP/IP defined in 2 versions: application transport network link physical 2 1 Introduction

Protocols and TCP/IP Layers 9/18/2018 Hajrasouliha_2015

Protocols and TCP/IP Layers 9/18/2018 Hajrasouliha_2015

Protocols and TCP/IP Layers 9/18/2018 Hajrasouliha_2015

Protocols and TCP/IP Layers 9/18/2018 Hajrasouliha_2015

Protocol Data Units 9/18/2018 Hajrasouliha_2015

Protocol Data Units 9/18/2018 Hajrasouliha_2015

Protocol Data Units 9/18/2018 Hajrasouliha_2015

Protocol Data Units 9/18/2018 Hajrasouliha_2015

Protocol Data Units 9/18/2018 Hajrasouliha_2015

Protocol Data Units 9/18/2018 Hajrasouliha_2015

Protocol Data Units 9/18/2018 Hajrasouliha_2015

Layer Addressing 9/18/2018 Hajrasouliha_2015

Layer Addressing 9/18/2018 Hajrasouliha_2015

Layer Addressing 9/18/2018 Hajrasouliha_2015

Layer Addressing 9/18/2018 Hajrasouliha_2015

Layer Addressing 9/18/2018 Hajrasouliha_2015

Layer Devices 9/18/2018 Hajrasouliha_2015

Layer Devices 9/18/2018 Hajrasouliha_2015

Layer Devices 9/18/2018 Hajrasouliha_2015

Layer Devices 9/18/2018 Hajrasouliha_2015

Layer Devices 9/18/2018 Hajrasouliha_2015

Layer Devices 9/18/2018 Hajrasouliha_2015

How to remember OSI Layers? 9/18/2018 Hajrasouliha_2015

TCP/IP defined in 2 versions Versus OSI 9/18/2018 Hajrasouliha_2015

PDU Summary: 9/18/2018 Hajrasouliha_2015

Addressing Summary: 9/18/2018 Hajrasouliha_2015

Device Summary: 9/18/2018 Hajrasouliha_2015

Encapsulation Summary through all layers source Encapsulation Summary through all layers message M application transport network link physical segment Ht M Ht datagram Ht Hn M Hn frame Ht Hn Hl M link physical switch destination network link physical Ht Hn M Ht Hn Hl M M application transport network link physical Ht Hn M Ht M Ht Hn M router Ht Hn Hl M Introduction

Protocol layers, Service models End of Lecture 4 Protocol layers, Service models 9/18/2018 Hajrasouliha_2015