DHCP Relay Agent: Configuration in Windows Server 2016

-

|

What is a DHCP Relay Agent?

A DHCP Relay Agent allows DHCP clients in a different network subnet to lease IP addresses from a DHCP server in a another network.

DHCP clients can only lease IP addresses from a DHCP server in its subnet. However, by installing a DHCP Relay agent, clients in other subnets can lease addresses.

The diagram below is the setup I used for this guide.

The DHCP server is on the same subnet with PC1Win10 (Windows 10 computer) so it can lease an IP address.

In comparison, PC2Win10 is in a different subnet so it cannot lease IP address from the DHCP Server. For PC2Win10 to lease an IP address, it requires a Relay Agent (RolesSRV2) to talk to the DHCP Server (RolesSRV2).

In Windows Server 2016, Remote Access role is required to configure DHCP Relay Agent.

Steps to Install and Configure DHCP Relay Agent in Windows Server 2016

This guide covers these steps:

  1. Install Remote Access (RRA) Role in Windows Server 2016
  2. Configure Routing and Remote Access
  3. Configure DHCP Relay Agent
Important Note
A DHCP server with a working scope is required. This is NOT covered in this guide.

1
Install Remote Access Role in Windows Server 2016

To install Remote Access:

  • Log on to the server and open Server Manager.
  • Then click Manage and select Add Roles and Features.
DHCP Relay Agent - install Remote Access Role
  • On the Before you begin screen, click Next.
  • Select Role-based or feature-based installation and click Next.
  • Next, on the Select Destination server page, select the server you wish to install Windows Deployment Services Role.
  • On the Server Role page, check the box beside Remote Access then click Next.
  • On the Select Features page, click Next.
  • Then on the Remote Access page, click Next.
DHCP Relay Agent
  • On the Select Role service, check the box beside Routing. A window pops asking whether to add features required for routing? Click Add Features.
DHCP Relay Agent
DHCP Relay Agent
  • You are returned to the Select role services page. Confirm that DirecttAccess (RAS) and Routing roles are selected. Then click Next.
DHCP Relay Agent
  • On the confirmation page, review the features you selected. Then click Install.

2
To Prepare for DHCP Relay Agent Configuration, Configure Routing and Remote Access.

Before you configure DHCP Replay Agent, you have to configure Routing and Remote Access first.

Follow the steps below:

  • From Server Manager, click Tools, then select Routing and Remote Access.
dhcp relay agent
  • On the Routing and Remote Access MMC, right-click your server then click Configure and Enable Routing and Remote Access.
  • On the Welcome page, click Next.
  • The Configuration page opens. Select the last option, Custom Configuration. Then click Next.
  • On the Custom Configuration page, check the box beside LAN routing. Click Next. Then on the confirmation page, click Finish.
DHCP Relay Agent - Configure Roting
  • A pop up appears prompting you to start Routing and remote access service. Click Start Service. Then wait for the service to start.
  • Routing and Remote Access is now Configured. We are now ready to set up DHCP Relay Agent!

3
Finally, Configure DHCP Relay Agent

  • Expand IPv4, then right-click General and select New Routing Protocol.
dhcp relay agent
  • On the New Routing Protocol window, select DHCP Relay Agent. Then click Ok.
dhcp relay agent
dhcp relay agent

We are not done yet. Next step is to select the network interface.

  • Right-click DHCP Relay Agent and select New Interface.
dhcp relay agent
  • On the New Interface for DHCP Relay Agent, select the network interface. Then click Ok.
Tip
Your network interfaces may be different. It will depend on the names of the network cards you have on the server.
  • When you click Ok in the last task, the properties of the network interface card opens for configuration. Accept the defaults then click Ok.

Hop-Count Threshold: The total number of devices that the packets should pass through as they travel from the source to the destination. In this instance the hop-count defines the number of DHCP Relay Agents the DHCP traffic is allowed to hop through.

Boot threshold (seconds): The number of seconds the relay agent ways before forwarding the message.

Your Relay Agent needs to know the DHCP server to contact when it receives a request. So the final step in this setup is to add the IP address of the Server to the Relay Agent procol.

To do this:

  • Right-click DHCP Relay Agent protocol.
  • Then select Properties
  • Next, beneath Server address enter the IP address of DHCP server and click Add.
  • To save your changes, click Ok.

Now, when you run ipconfig /renew on a client in the subnet outside the DHCP server’s subnet, the client will lease an IP.

Conclusion

There you have it. Clients can now lease IP address from DHCP server outside their own network.

If you are having troubles getting your configuration to work, read this guide – DHCP Relay Agent Windows Server 2016 Not Working [Fixed].

I will appreciate you comments. Kindly provide feedback using the “Leave a Reply” form at the end of this page. Let me know your thoughts on this article. You could also share your experience for other readers to benefit from.

Other Helpful Tutorials

Additional Resources and References

  • Was this post Helpful?
  • YesNo

LEAVE A REPLY

Please enter your comment!
Please enter your name here

ADVERTISEMENTS

FEATURED POSTS

How to Share Amazon Wish List

How to Share Amazon Wish List

This Itechguide teaches you how to share Amazon Wish List. The guide covers steps to share Amazon Wish List from a PC...
How to Pay with PayPal on Amazon

How to Pay with PayPal on Amazon

This Itechguide teaches you how to pay with PayPal on amazon. The guide covers 2 options to pay with PayPal on amazon....
How to Export Contacts from Outlook

How to Export Contacts from Outlook

This Itechguide teaches you how to export contacts from Outlook. The guide covers steps to export contacts from Outlook (Windows 10) or...
Best 90s Movies on Netflix

The 10 Best 90s Movies on Netflix

This Itechguide reviews the 10 best 90s movies on Netflix. The movies are listed in reverse order – with the 10th movie...
How to Clear Search History on Instagram

How to Clear Search History on Instagram

This Itechguide teaches you how to clear search history on Instagram. The guide covers steps to clear search history on Instagram from...

AMAZON DEALS

TRENDING POSTS

Remote Desktop Connection

Remote Desktop Connection an Internal Error Has Occurred [Fixed]

Introduction I recently received the error message "Remote Desktop Connection an Internal Error Has Occurred". It was strange because...

Find My Samsung: Register and Use Samsung Find my Mobile

Introduction Ever wondered how you could find your Samsung phone if you lost it? Find my Samsung or Samsung...
What is the Difference Between PowerShell and CMD?

Windows Powershell vs CMD: Differences and Similarities

Introduction This short guide compares Windows PowerShell vs CMD (Windows command prompt). I will cover the history and nature...
Spotify No Longer Supports this Version of Microsoft Edge

Spotify No Longer Supports this Version of Microsoft Edge [Fixed]

Introduction When you open Spotify web player on Microsoft Edge, you may receive the error message "Spotify No Longer...
Windows 10 Won't Boot

Windows 10 Won’t Boot With Black Screen? 3 Ways to Fix It

Why Won't Windows 10 Boot Up? If your Windows 10 stops with a black screen, the first question in...

ADVERTISEMENTS

BEST OF ITECHGUIDES

this accessory may not be supported

This Accessory May Not be Supported [Fix]

What Does This Accessory May Not be Supported Mean? You may receive "this accessory may bot be supported" error...
Websites Like Craigslist for Apartments

Top 5 Websites Like Craigslist for Apartments

Craigslist is a local classified Ads website with 7 sections including apartment rent. It is a brilliant site but using other websites...
How to Send a Google Calendar Invite

How to Send a Google Calendar Invite

This Itechguide teaches you how to send a Google Calendar invite. The guide covers steps to send a Google Calendar invite from...

How to Set Homepage in Google Chrome (Settings or Group Policy)

Introduction You can set homepage in Chrome (Google Chrome) directly from Settings. This method is suitable for individual or...

Gmail Search by Date: How to Search Gmail by Date

Introduction You can search Gmail by date for emails sent during certain time period. You could also search Gmail...

RECENT POSTS

5 Best Bluetooth Headphones Under 100

5 Best Bluetooth Headphones Under $100

This Itechguide reviews the 5 best Bluetooth headphones under 100 (USD). The best headphone is reviewed last, starting with the 5th on...
How to Search for a Word in Google Docs

How to Search for a Word in Google Docs

This Itechguide teaches you how to search for a word in Google Docs. The guide covers steps to search for a word...
How to Create a Folder in Google Docs

How to Create a Folder in Google Docs

This Itechguide teaches you how to create a folder in Google Docs. The guide covers steps to create a folder in Google...
How to Check Amazon Gift Card Balance

How to Check Amazon Gift Card Balance

This Itechguide teaches you how to check Amazon gift card balance. The guide covers steps to check Amazon gift card balance from...
How to Remove Google Account from Phone

How to Remove Google Account from Phone

This Itechguide teaches you how to remove Google Account from phone. The guide covers steps to remove Google Account from Android or...

AMAZON DEALS

MUST READ

How to Add Multiple Photos to Instagram

How to Add Multiple Photos to Instagram

This Itechguide teaches you how to add multiple photos to Instagram. The guide covers steps to add multiple photos to Instagram from...
concatenate excel

Concatenate in Excel: How to Concatenate Columns and Strings

What is Concatenate in Excel? Concatenate in Excel is joining two strings into one continuous string. You can join...
Best Spanish Shows on Netflix

The 10 Best Spanish Shows on Netflix

This Itechguide reviews the 10 best Spanish shows on Netflix. The series are listed in reverse order – with the 10th series...
How to Alphabetize in Google Sheets

How to Alphabetize in Google Sheets

This Itechguide teaches you how to alphabetize in Google Sheets. The guide covers steps to alphabetize in Google Sheets from a PC...
how to save google doc as pdf

How to Save Google Doc as PDF

This Itechguide teaches you how to save Google Doc as PDF. The guide covers steps to save Google Doc as PDF from...

AMAZON DEALS

By using this website you agree to accept our Privacy Policy and Terms & Conditions