Will the network continue to work without a DHCP server?

Question

DHCP

The question is a little silly, but still maybe someone has come across something similar in practice.
There is a local network in which hosts receive IP addresses with a certain lease period from a DHCP server. At some point, the DHCP server fell (it was taken away, cut down, etc.). How will the hosts behave after the lease period of the IP addresses issued to them expires?

Answer 1

The network on clients (for all at once or in turn) that previously received settings from DHCP and in its absence will cease to function upon the occurrence of one of:
1. The lease expires
2. Lowering the interface (or restarting the switch, or physically disconnecting the client from the network, or down \up inside the OS)
3. Rebooting the OS
4. Initializing / restarting the dhcp-client service inside the OS
5. Receiving a package (it is called a little differently in the protocol, but so be it) or release\renew commands

Answer 2

When they get hungry (the lease expires), they will yell (broadcast) to the network and, without shouting, API will start working (if Windows).
Something like this =)

Answer 3

When the lease expires... the DHCP client should immediately stop using the busy IP address.

www.blogss.ru/the-process-of-obtaining-and-renewal...

Answer 4

About halfway through the lease, the client sends a request to the server.
If the server responds, then everyone is happy and the period is extended, if the server does not respond, then after some time the client sends a broadcast request in search of at least some server thread that can serve it.
As a result, if no one answered the client, then after the expiration of the period, the received addresses are released by the client.