Chapter 4 Http netwk hannam ac kr HANNAM

Chapter 4 네트워크 계층 소개 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 1

Chapter Outline 4. 1 Introduction 4. 2 Switching 4. 3 Packet Switching 4. 4 Network Layer Services 4. 5 Other Network Layer Issues Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 3

Note In circuit switching, the whole message is sent from the source to the destination without being divided into packets. Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 7

Note In packet switching, the message is first divided into manageable packets at the source before being transmitted. The packets are assembled at the destination. Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 8

Note In a connectionless packet-switched network, the forwarding decision is based on the destination address of the packet. Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 12

▣ 비연결형 네트워크에서 지연(Delay) Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 13

▣ 연결-지향(connection-oriented) 패킷 교환망 < 전송 경로인 가상회선을 따라 전달 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 15

Note In a connection-oriented packet switched network, the forwarding decision is based on the label of the packet. Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 16

가상-회선 망에서 요청 패킷(request packet) 보내기 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 19

가상-회선망에서 설정(Setup)의 확인응답 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 20

설정된 가상-회선에서 하나의 패킷 흐름 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 21

연결-지향 네트워크에서 지연(Delay) Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 22

Topics Discussed in the Section ü Logical Addressing ü Services Provided at the Source Computer ü Services Provides at the Each Router ü Services Provided at the Destination Computer Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 24

▣ 인터넷의 가상 부분 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 25

발신지 컴퓨터에서 제공되는 서비스 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 27

각 라우터에서 처리과정 TCP/IP Protocol Suite Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 29

목적지 컴퓨터에서 처리과정 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 31

Note No flow control is provided for the current version of Internet network layer. Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 34