What protocol would be commonly be used to automate the assignment of IP address in the network?

Firstly it is important to have a DHCP server resigned within the company's network. Then once dynamic allocation has been chosen in the settings of your server to assign IP addresses, any network protocol supports assigning IP addresses and network configuration to the computers/tablets/smartphones. Even RIPv2 supports dynamic allocation of network configuration.

for a compony with a large computer static ip assignment is not an option so DHCP is used instead to automate ip addresse management

Dynamic Host Configuration Protocol (DHCP)

DHCP(Dynamic Host Control Protocol ) is used to automate assign ip for a network.

DHCP Dynamic Host Configuration Protocol is used to automate the assignment of ip address to host 

DHCP Dynamic Host Control Protocol

Hi,

DHCP (Bootp) is the protocol its task to deliver IP addresses with TCP/IP options like gateway, DNS server and WINS to all clients in the network.

If the DHCP is down or the client is un able to reach DHCP then the client will configure itself bu assigning IP from the range169.254.X.X/16 or fe80 (IP6), this process is called APIPA or LLA (in IP6) which means there's a problem.

Regards,

DHCP

DHCP & when it's not available, APIPA assigned automaticaly (but APIPA is not good for work network) & If u have DHCP sever & a computer assigened APIPA, that means this computer can't connect to the DHCP server

DHCP. and when DHCP Server is down APIPA is working automatically