The Dynamic Host Configuration Protocol (DHCP) provides a framework for passing configuration information to hosts on a TCPIP network. It is an IP standard for simplifying the management of host IP configuration. The DHCP standard provides for the use of DHCP servers as a way to manage the dynamic allocation of IP addresses and other related configuration details for DHCP-enabled clients on your network. See how to create and delete a DHCP reservation in Windows Server 2019 and How to configure DHCP Server option 60, 66, and 67 for Windows Deployment Services.
DHCP is a client and server protocol that automatically provides an Internet Protocol (IP) host with its IP address and other related configuration information such as the subnet mask and default gateway. DHCP allows hosts to obtain required TCP/IP configuration information from a DHCP server.
Windows Server 2008, 2012, 2016, and Windows Server 2019 includes DHCP Server role which you can deploy on your network to lease IP addresses and other information to DHCP clients. All Windows-based client operating systems include the DHCP client as part of TCP/IP, and DHCP client is enabled by default.
For more information on DHCP, see the following links below
– For more information on Automatic IP Assignment: Dynamic Host Configuration Protocol (DHCP)
– How to install Dynamic Host Configuration Protocol on Windows Server 2019
– On how to configure DHCP: Post-deployment of Dynamic Host Configuration Protocol.
– Information on BOOTP Vendor Extensions and DHCP Options.
– We can’t sign you with this credential because your domain isn’t available – Why Can’t I Connect with a 169.254 IP Address?
Since some DHCP icons have specific meanings and they communicate general status information about the current state of console objects. Here are few examples below.
|This means that the console is attempting to connect to the server.|
|This often means that DHCP has lost its connection to the server.|
|DHCP server added to console.|
|DHCP server connected and active in console.|
|DHCP server connected but not authorized in Active Directory for use on your network.|
|DHCP server connected but current user does not have the administrative credentials to manage the server.|
|DHCP server warning. Available addresses for server scopes are 90 percent or more leased and in use. This means that the server is nearly depleted of available addresses to lease to clients.|
|DHCP server alert. No addresses are available from server scopes because the maximum (100 percent) of the addresses allocated for use are currently leased. This represents a failure of the DHCP server on the network because it is not able to lease or service clients.|
|Scope or superscope is active.|
|Scope or superscope is inactive.|
|Scope or superscope warning. Scope warning: 90 percent or more of the scope’s IP addresses are in use. Superscope warning: If any scope within the superscope has a warning, the superscope has a warning.|
|Scope or superscope alert. Scope alert: All IP addresses have been allocated by the DHCP server and are in use. No more clients can obtain IP addresses from the DHCP server because it has no more IP addresses to allocate. Superscope alert: At least one scope contained in the superscope has all IP addresses allocated by the DHCP server. No clients can obtain an IP address from the range defined in the scope that is 100 percent allocated. If other scopes within the superscope contain available addresses, the DHCP server can allocate addresses from these scopes.|
|Folder containing the list of server options.|
|Folder containing the list of scope options.|
|Folder containing the list of active leases.|
|Active lease: this address is not available for lease by the DHCP server.|
|Expired lease: this address is available for lease by the DHCP server.|
|Active lease, DNS dynamic update pending. This address is not available for lease by the DHCP server.|
|Active reservation lease: this address is an active lease on a reserved IP address. This IP address is not available for lease by the DHCP server.|
|Client is connecting through a remote access server.|
More console icons
|Root of the DHCP console.|
|Address pool folder.|
|Scope allocation range. Addresses in this range are allocated to the available address pool used to offer leases to clients.|
|Scope exclusion range. Addresses in this range are excluded from the available address pool used to offer leases to clients.|
|Folder containing the list of reservations.|
|Bootstrap Protocol (BOOTP) table.|
|BOOTP entry in the table, containing information that is returned to the BOOTP client (Ex: boot image file name, file server name).|
|Folder that contains the Allow and Deny filters folders.|
|Folder containing the list of allow filters when filtering is enabled. Allow client filters in the list will apply.|
|Folder containing the list of allow filters when filtering is disabled. Allow client filters in the list will not apply.|
|Allow client filter. This client will be allowed to obtain a lease from this DHCP server, if its MAC address is in the list.|
|Folder containing the list of deny filters when filtering is enabled. Deny client filters in the list will apply.|
|Folder containing the list of deny filters when filtering is disabled. Deny client filters in the list will not apply.|
|Deny client filter. Clients with these MAC addresses will not be allowed to obtain a lease from this DHCP server.|
I hope you found this blog post helpful. If you have any questions, please let me know in the comment session.