Configuring IP addresses from static to DHCP

In some cases, you may need to switch the IP address of a server from static back to DHCP. The server may have had a static IP address based on the role it used to perform a role, but you plan to repurpose this server and want to reconfigure the server to obtain IP configuration from DHCP.

Getting ready

This recipe uses SRV1 which, at the start of the recipe, has manual IP configuration, such as what you created in the Configure IP addressing recipe. In this recipe, you changed from static to DHCP configuration. Also, this recipe assumes that you have DHCP running based on the Installing and authorizing a DHCP server and the Configuring DHCP scopes recipes.

How to do it...

1. Get the existing IP address' information:

   $IPType = 'IPv4'
   $Adapter = Get-NetAdapter |
                Where-Object Status -eq 'up'
   $Interface = $Adapter |
                  Get-NetIPInterface -AddressFamily $IPType
   $IfIndex = $Interface.ifIndex
   $IfAlias = $Interface.Interfacealias
   Get...