Packet Switching

Packet Switching

1. The file is broken up into 512 bytes. Each packet is given a header

   • Packets are labelled with the sender's and the destination IP addresses.
     • Every computer and other device connected to the internet has an IP address
     • Packets are sent across the internet seperately via different routes and reassembled at the end.
       • The recipient computer will acknowledge receipt of packets. Any packets not acknowledged after a set time interval will be automatically resent by the sending computer
     • Each data packet will contain the same number of bytes
     • Each packet is marked with the packet number and the total number of packets in the transmission.
     • Each packet is given a header containing: The IP address it is going to, The IP address it has come from, the sequence number of the packet, the number of packets in the whole communication and error checking data