DHCP

So this past week I’ve been learning more about Dynamic Host Configuration Protocol version 4. , Dynamic Host Configuration Protocol(DHCP) is a protocol that communicates between a client , and a server to provide IP addresses allowing clients to send and receive data through the , internet. It also automatically provides other related configuration information such as the , subnet mask and default gateway. There are 3 address allocation methods: Dynamic, Automatic, , and Manual. Dynamic protocols lease IPv4 addresses for a limited time period and then has the , address return to a pool for redistribution. Automatic allocation permanently assigns an IP , address to a client. Manual allocation allows administrators to manually assign pre-allocated IP , addresses. DHCPv4 is used to allow fast easy IP address assignments. DHCPv4 uses 4 processes , to assign addresses: DHCP Discover (Broadcast), DHCP Offer (Unicast), DHCP Request , (Broadcast), DHCP Acknowledgement (Unicast). DHCP Request messages are sent as a broadcast , to notify all DHCP servers that that an IP address was leased. A client after receiving a DHCP , Pack, performs an ARP request to see of the address is assigned anywhere else to avoid , conflicts. Clients also send DHCP Request unicasts to the server to renew leases. DHCPv4 servers , use the client hardware address when sending packets when the client is requesting an IP , because their IP Address has not yet been configured. Overall, DHCP is a useful protocol to , assign IP addresses for large amounts of devices especially if there are various clients who are , on the networking for varying time ranges.