In the LAN, its recommended to use DHCP because of the following two big reasons.
Reduced Netwok Administration:
Centralized and Automatic TCP/IP configurations.
DHCP Obtain the Ip Address automatically.with out ip collision.with respect of Scopes.
The use of a DHCP relay agent is an agent that relays DHCP between DHCP clients and DHCP servers on different IP networks. The DHCP relay agent is compliant with RFC 1542.
See related link. You can use MyLanViewer and detect DHCP servers.
DHCP uses the clients MAC address to determine the IP address a client receives.
Yes.
They use DHCP to assign IP Addresses to Devices such as Windows XP, Networking flashcards, OIt DHCP and BootP services, and connecting routers. The definition for DHCP is Dynamic Host Configuration Protocol.
For a Windows based system you use the DHCP MMC snapin console. This is installed when the DHCP server service is installed. For Linux and Unix based systems you can edit the DHCP configuration file in /etc
The method of enabling DHCP depends on the OS in use. On Windows, DHCP can be enabled by activating the 'Automatically choose IP address' setting in the connection properties dialogue box of the connection.
DHCP
DHCP is good if you've got a network that changes constantly. If you owned a hotel that offered free in-room high-speed Internet over Ethernet, DHCP would make your life much simpler: instead of issuing a static IP address to every guest, you'd just tell them to set their laptops to use DHCP and plug into the jack in the wall. If you're running a network that doesn't change much over time, you can still use DHCP but I think it's kinda silly--it's as easy to plug in an IP address and subnet mask as it is to use DHCP.
According to Microsoft:How to use automatic TCP/IP addressing without a DHCP server"A Windows-based computer that is configured to use DHCP can automatically assign itself an Internet Protocol (IP) address if a DHCP server is not available. For example, this could occur on a network without a DHCP server, or on a network if a DHCP server is temporarily down for maintenance."For more information, see Related Links, below.
The port 67 and port 68 are used by DHCP and the DHCP clients.
You dont *need* DHCP in AD. Although most people just use it anyway. However you do need DNS in an AD.