Change DHCP option sets on AWS

This post describes how to change DNS servers IPs of Windows server on AWS

 

 

NOTE:

Do not change DNS servers directly inside OS of server installed on AWS.

By Changing DNS servers from OS will break the instance and make it inaccessible

 

 

STEP1: Check current DHCP option in AWS and name of DHCP options set attached to VPC

 

By default DHCP option set is created and attached to VPC.

 

Login to AWS console and go to VPC.

Click DHCP options sets

 

 

 

 

 

STEP2: Click on Create DHCP options set

It will prompt for details

 

 

 

STEP3:  Fill the details as per your requirement.

Domain name will cange Domain suffix

 

 

STEP4:  Verify DHCP Option set

 

 

STEP5: Attach new DHCP option set by right clicking on VPC and select edit DHCP option set

 

 

 

STEP6: Change the DHCP option

 

 

 

 

STEP7: Verify attachment of new DHCP option set to VPC

 

 

STEP8: Check existing settings on Server

 

 

 

STEP9: Wait for new dhcp options to get applied on server or you can force it by renewing the lease

 

Run command " Ipconfig /renew"

 

 

 

STEP10: Verify domain name and DNS server after applying changes