How DHCP works?

DHCP server

  • Assign a uniqe IP to a host
  • Provide subnet mask
  • Default gateway, DNS server address

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DHCP can run on routers, or a server. At home usually on a router, in enterpirse. It's handled by a server

  • Step1: DHCP discover A send broadcast messages

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  • Step 2: DHCP Offer

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  • Step 3: DHCP request

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  • Step 4: HHCP Pack

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Send the IP address, subnet mask and DNS server

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