Adding DNS Servers in All DHCP Scopes using PowerShell

To Get all Scopes – Open PowerShell – Run as Administrator

Get-DhcpServerv4Scope

To Check DNS Servers Option 006

To Check – Whatif

Get-DhcpServerv4Scope| Set-DhcpServerv4OptionValue-DnsServer172.21.10.20,172.21.10.21,10.10.11.10,10.10.11.11 –Whatif

To Apply

Get-DhcpServerv4Scope| Set-DhcpServerv4OptionValue-DnsServer172.21.10.20,172.21.10.21,10.10.11.10,10.10.11.11

To Check if its Applied or Not

Get-DhcpServerv4Scope| Get-DhcpServerv4OptionValue| Where-Object{$_.OptionID -like6} | FT Value

You can see 006 DNS Servers Updated for all scopes