There are a lot of DHCP errors 
out there. Way too many, right?

 

You as a sysadmin know that for sure – DHCP server error, DHCP Error 0x79, DHCP failover error 20010.
Your DHCP setup sometimes drives you crazy.

Here's a list of the most common errors around DHCP and the proven solution to them:

  1. DHCP server error
  2. DHCP error 0x79
  3. DHCP failover error 20010

 

And you'll find the solution to get rid of ALL DHCP errors – forever: Test PRTG and get started within minutes!

 

 1. DHCP error: 

"DHCP server error"

 

Quick fix

A DHCP error can be triggered by two things. The first reason can lie within the configuration on your computer or device that allows a DHCP server to assign it an IP. The second reason is the configuration of the DHCP server itself.

A DHCP error means the server on your network that provides an Internet Protocol (IP) adress for devices is not able to assign your device an IP adress.

 

Best solution:

https://www.lifewire.com/dhcp-error-what-it-is-and-how-to-fix-it-4687111

 Proper fix

With PRTG you can automatically assign your IP addresses to your devices. Also, PRTG allows you to check if DHCP allocates adresses and the response time of your DHCP servers.

Thanks to PRTG you will be notified if adress pools are running low.

Learn more about DHCP monitoring

 

 2. DHCP error: 

"DHCP error 0x79"

 

Quick fix

The error notification is an indication that you have a predefined IP adress on the computer (192.168.1.3) and your Netgear device has assigned this IP adress to another device. Alternatively, the IP adress is outside the scope of the DHCP range. To solve the problem, you should check the DHCP range on your router and verify that the Computer is set to obtain and adress automatically.

 

 

Best solution:

https://forums.businesshelp.comcast.com/t5/Connectivity/DHCP-Error-0x79/td-p/6956

 

More solutions:

http://epan36.blogspot.com/2012/09/eventid-1001-dhcp-your-computer-was-not.html

 Proper fix

With PRTG you can automatically assign your IP addresses to your devices. Also, PRTG allows you to check if DHCP allocates adresses and the response time of your DHCP servers.

Thanks to PRTG you will be notified if adress pools are running low.

Information about DHCP monitoring

 

 3. DHCP error: 

"DHCP failover error 20010"

 

 

Quick fix

The option that is specified does not exist. This error will hapen with any scope that has one or more custom DHCP attributes.

 

Hint:

Make sure that all of your custom settings from the primary DHCP server are also mirrored on the other server. It is possible that those customizations are vast and numerous. The rule is that the more customizations you will try to replicate, the more prone to human erros you will be. 

It is better to backup the DHCP settings when nobody needs DHCP. Backup the DHCP settings by clicking on the server name under the DHCP console and select backup.

Then, copy the folder that you have backed up to the secondary server. Restore from that backup. Delete all scopes on the secondary server. 

Best solution:

https://social.technet.microsoft.com/Forums/de-DE/a60ed600-58d6-4f06-a8c5-d01104b1eaa7/server-2012-r2-dhcp-failover-error-20010?forum=winserver8gen

 Proper fix

With PRTG you can automatically assign your IP addresses to your devices. Also, PRTG allows you to check if DHCP allocates adresses and the response time of your DHCP servers.

Thanks to PRTG you will be notified if adress pools are running low.

Information about DHCP monitoring

 

Choose your solution: Bugfix or replacement

 

With PRTG you'll never have to deal with
DHCP errors again. Ever.

 


  • PRTG makes sure that the DHCP server is running

  • PRTG checks that DHCP allocates adresses


  • PRTG checks the response time of your DHCP servers

  • PRTG notifies you when adress pools are running low

 

Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.

 
 

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