Page 115 - RHEL8 BOOK

More about DHCP:
 DHCP is a connectionless protocol.
 DHCP uses destination UDP port 67 for sending data to the server, and UDP port 68 for data to
the client.
 DHCP process is often abbreviated as DORA (Discovery, Offer, Request, and
Acknowledgement).
 DHCP servers and clients initially communicates via UDP broadcasts on the same subnet.
 DHCP Helper or DHCP Relay Agent may be used if servers and client are on different subnet.
 Clients communicate directly via UDP unicast, requesting renewal of an existing lease.

Why DHCP Reservation?

Assigning IP address dynamically has some problems that every time a client system boots it is not sure
that it will get the same IP so it will be uneasy task for other systems to find the particular system.

To solve the above problem, we can do mac-address
Binding of the IPs. Just give its entry in the fixed address portion.

Requirements
 Packages
dhcp*

 Port Numbers
67 Bootp
68 DHCP

 Configuration File
/etc/dhcpd.conf
 Service
dhcpd
 Daemon
Dhcpd

S. Pradhan
(MCA, MBA-IT, BCA, CCNA, MCSA 2012, RHCE, ETHICAL HACKING)
Email Id:-spradhan.iiht@gmail.com
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