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DHCP Failover


DHCP Failover

In order to have secondary node to provide IP to clients, we are going to add failover node to   primary (10.211.0.25), we are adding partner Server (LABdc02-10.211.0.26), Configure a Failover relationship.
Configuring the DHCP failover in your LAN is a simple operation to improve the reliability of the network.
There are two main ways to provide DHCP failover:
·         Load balancing
·         Hot standby
Load balancing allows to share the load between two or more DHCP servers while the Hot standby mode simply provide DHCP redundancy.
In this guide we adopted the Hot standby mode. The DHCP servers are two Windows 2012 R2 machine in the same domain (mandatory requirement).

 First, configure a failover relationship using (LABDC01) and (LABDC02)

 TO CONFIGURE A FAILOVER RELATIONSIP
A.     Start Wizard
On (LABDC01) open the DHCP console, right-click the IP Telephone DHCP scope and then click Configure failover.

B.      Configure Failover 
In the Configure Failover wizard, click next.     
C.      Specify the partner server
In Specify the partner server to use for failover, next to Partner Server, type LABDC02.FMC.COM and then click Next.

Note: if you want to use existing failover relationship, you need to tick on below checkbox
D.      Failover relationship
In Create a new failover relationship, type a name next to Relationship Name, or (FAILOVER_1). according to the Microsoft Knowledge bases we allowed to have maximum 31 relationship, and same relationship can be used to failover more than 2 scopes, and click on Next

E.       After That you will be able to review wizard

Click on finish to see the progress and status of operation, as shown below



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