Microsoft DHCP Discovery
This page covers how to discover Microsoft DHCP servers and automatically populate records of IP addresses, subnets, and DHCP details like scope, state, lease duration, and DNS information.
Microsoft Dynamic Host Configuration Protocol (DHCP) is a network management protocol used to dynamically assign IP addresses and other network configuration parameters to devices on a network. If you use Microsoft DHCP Servers in your environment, Microsoft DHCP discovery automatically populates records of discovered DHCP servers, IP addresses, and subnets.
Create a DHCP Discovery Job
Navigate to Discovery > DHCP on the Main Appliance and click Create.
Microsoft DHCP discovery uses WMI by default, but WinRM is also supported and can be enabled in the job configuration. The URL prefix and Port fields default accordingly when you select Discover Using WinRM.
Although WinRM is fast and Microsoft's preferred protocol, updating existing jobs to use WinRM is not recommended, as Device42 currently (v19.06) uses NTLM, which Microsoft is deprecating. Kerberos support is planned for a future release.
If Discover Using WinRM is not enabled, pair a WDS with the selected Remote Collector to use WMI.
Additional Options
You can set a schedule to run the job automatically, turn off the default Create Device from DHCP lease information option, and set a Service Level.
You can also link a Customer to the discovered items, select a VRF Group for subnets, and set a Subnet Category for discovered subnets.
