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DHCP – Dynamic Host Configuration Protocol

DHCP – Dynamic Host Configuration Protocol...

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DHCP – Dynamic Host Configuration Protocol Allows connecting computers to the Internet without the need of an administration. Before DHCP, an administrator had to manually configure the following parameters to add a computer to the Internet: The local IP address – Current address The subnet mask – Used to send packets to hosts in same LAN The default router – Used to send packets to hosts outside the LAN The default DNS server – Used to convert names to IP addresses. In UNIX the command used to set these parameters is ifconfig. In Windows is ipconfig or the Control Panel.
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Transport Protocols Two transport protocols available in the TCP/IP family UDP – User Datagram Protocol TCP – Transmission Control Protocol
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UDP- User Datagram Protocol Unreliable Transfer. Applications will need to implement their own reliability if necessary. Minimal overhead in both computation and communication. It is best for LAN applications Connectionless – No initial connection necessary. No state in both ends
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UDP- User Datagram Protocol Message Oriented Each message is encapsulated in an IP datagram.
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