Why is the DHCPREQUEST Message Sent as a Broadcast in the DHCPv4 Process?

What is the reason why the DHCPREQUEST message is sent as a broadcast during the DHCPv4 process?

DHCPREQUEST message is sent as a broadcast during the DHCPv4 process is to ensure that all DHCP servers on the network receive the request.

The reason why the DHCPREQUEST message is sent as a broadcast during the DHCPv4 process is to ensure that all DHCP servers on the network receive the request.

When a client sends a DHCPDISCOVER message, it is typically sent as a broadcast. This allows the DHCP server(s) on the network to receive the message and offer an IP address lease to the client.

Once the client receives DHCP offers from one or more servers in the DHCPOFFER message, it needs to select one and request the offered lease. The client sends a DHCPREQUEST message as a broadcast to indicate its intent to accept the offered lease.

By sending the DHCPREQUEST as a broadcast, the client ensures that all DHCP servers on the network receive the request. This becomes important in scenarios where there are multiple DHCP servers in the network, as the client needs to notify all of them about its choice.

Once the DHCP servers receive the DHCPREQUEST message, they can take appropriate actions such as reserving the offered IP address for the client and updating their lease databases. The server whose offer is accepted by the client will respond with a DHCPACK message to confirm the lease, while the other servers receive a DHCPNAK message to indicate that their offers were not accepted.

Overall, sending the DHCPREQUEST message as a broadcast during the DHCPv4 process allows the client to ensure that all DHCP servers are aware of its lease selection, facilitating proper IP address assignment and lease confirmation.

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