Why all messages in DHCP is broadcast?

The broadcast ensures that all the responding DHCP servers know that the client has chosen a server. The servers that are not chosen can cancel the reservations for the IP addresses that they had offered. The selected server allocates the IP address for the client and stores the information in the DHCP data store.

Why do clients in a dchpv4 network send Dhcprequest messages as broadcast?

When a DHCP client receives DHCPOFFER messages, it will send a broadcast DHCPREQUEST message for two purposes. First, it indicates to the offering DHCP server that it would like to accept the offer and bind the IP address. Second, it notifies any other responding DHCP servers that their offers are declined.

What is unicast and broadcast?

Broadcast messages are sent to all stations in the network. Whereas an unicast message is only sent to one station on the network. Multicast messages are sent to a group of stations, for example video cameras type. 255.255 are MULTICAST IP addresses.

Can DHCP Discover be unicast?

In other words, if the Broadcast Flag value of a DHCP Discover message is set to 0 (representing a Unicast mode), a DHCP server definitely unicasts a DHCP Offer message.

Why is my DHCP server using unicast packets?

A DHCP server is answering with a DHCP OFFER to provide an IP address. It knows the target MAC and IP, hence will use a unicast IP packet, toward the originating Ethernet address, hence a unicast Ethernet frame too. If you want to see it for real, just enter the following command on your DHCP server:

Is dhdhcp offer a layer 3 broadcast or unicast?

DHCP OFFER is a layer3 broadcast because the server don’t know client Ip, but server knows the client mac address. So how it would be the broadcast? If anyone ask me about this? how should I answer? can i say its layer3 broadcast and layer2 unicast

What is the function of the broadcast bit in DHCP?

The BROADCAST bit will provide a hint to the DHCP server and BOOTP relay agent to broadcast any messages to the client on the client’s subnet. A client that can receive unicast IP datagrams before its protocol software has been configured SHOULD clear the BROADCAST bit to 0.

Is the client’s IP address broadcast or unicast?

The answer is that it can be either broadcast or unicast – and in some cases both unicast and broadcast before it reaches the client when an ip helper-address is used. A client doesn’t actually have an IP address until the DISCOVER-OFFER-REQUEST-ACK exchange is completed.