How does DHCP work?

DHCP

CLIENT

DHCP

CLIENT

DHCP

SERVER

DHCP

DATABASE

MAC address

MAC address, IP#,

lease time

DHCP discover

DHCP offer

IP#, lease time

IP scope

DHCP request

IP#, MAC address

IP#, lease time

DHCP ack

(1)

(2)

(0)

• Scope - a range of IP addresses

• IP lease - the IP# is assigned temporarily

• Reserved IP - servers are assigned fixed IP addresses

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