DHCP

DHCP

1. What it is ?

   • DHCP is a network management protocol used on UDP/IP networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks.

2. Dynamic Host Configuration Protocol

3. Type of assignment

   • Manual
     • The IP address is associated with a direct MAC address client
   • Dynamic
     • The server offers to the client an address for one limited time
   • Permanent
     • The address assigned to the client remains permanently associated

4. What we have to do to have a dhcp server

   • All routers have dhcp server inegrated
   • the advanced switches have dhcp server integrated
   • Windows Server and Linux can also offer the DHCP service

5. Other actions can dhcp do

   • Configuration of hourly service
   • Creation of areas to manage networks
   • Interfaces for which you accept DHCP requests

6. Address pool

   • Address sets that will be offered

7. Asignation time

   • the time that take to asign

8. Steps

   • The DHCP discover is sent as a broadcast.
     • The server answer with the offer
       • then the client send the request as a broadcast
         • and finaly the server answer with two options ACK(give the adress) and NAK (not possible to give adress