Rules of Packet Transmission Role of packet switching

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Rules of Packet Transmission (Role of packet switching and routers)

Rules of Packet Transmission (Role of packet switching and routers)

How is data sent? Payload (the data) Destination Address Source Address (Packet or Datagram)

How is data sent? Payload (the data) Destination Address Source Address (Packet or Datagram) When a computer wants to send a message or a file to another computer, it firstly separates the file into a series of data packets. (eg word document, MP 3 etc) Rules of Packet Transmission File

Using datagram's Computer network File Sending a file File (Packet or Datagram) Sending the

Using datagram's Computer network File Sending a file File (Packet or Datagram) Sending the data Rules of Packet Transmission (Packet or Datagram) Reorganising a file

Sending the packets (IP Address) D A File, DATA T Sending computer 1 2

Sending the packets (IP Address) D A File, DATA T Sending computer 1 2 4 5 A Breaking up the file into packets 3 Data packets are reassembled (IP Address) 6 Rules of Packet Transmission 7 File, DATA Receiving computer

(IP Address) Packets via the Router D A T A Sending computer Packets about

(IP Address) Packets via the Router D A T A Sending computer Packets about to be sent out onto the Internet The router is instrumental in sending packets onto their destination Data packets are reassembled having reached their destination D (IP Address) A T Rules of Packet Transmission A Receiving computer

The Router Gateway D A The Router Gateway The router inspects the computer’s address

The Router Gateway D A The Router Gateway The router inspects the computer’s address packets and sends it onto the next router. Rules of Packet Transmission A ‘mish mash’ of routers send messages on to their destinations

The Router Gateway D D A A T T A A Computer A x

The Router Gateway D D A A T T A A Computer A x x If part of the network fails, then packets are rerouted around the failure. Rules of Packet Transmission Computer B

The Router Gateway Advantages of Packet Switching 1 When sending packets, the system is

The Router Gateway Advantages of Packet Switching 1 When sending packets, the system is able to survive a partial network failure, as packets are rerouted 2 Packets can be rerouted around failures very quickly and set on a new path 3 The Internet can grow very quickly as its growth is based on the end points not on any centralised control 4 There is no need for Internet routers to notify each other as endpoint connections are formed and dropped 5 The integrity and security of each packet sent is handled by the endpoints, which simplifies the role of the Internet. 6 Each end point need only be aware of the router to which it is connected and optionally a name resolution service. Rules of Packet Transmission

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Chapter 10 Packet Switching Packet Switching Principles SwitchingChapter 10 Packet Switching Packet Switching Principles Switching
Computer Networks Circuit Switching Packet Switching Switching NetworksComputer Networks Circuit Switching Packet Switching Switching Networks
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Module 3 4 Switching Circuit Switching Packet SwitchingModule 3 4 Switching Circuit Switching Packet Switching
Chapter 14 Switching Circuit Switching Packet Switching MessageChapter 14 Switching Circuit Switching Packet Switching Message
Jaringan Komputer Circuit Switching dan Packet Switching SwitchingJaringan Komputer Circuit Switching dan Packet Switching Switching