Windows Server 2012R2 DHCP Load Sharing Mode
Hello,
I am planning to migrate a standalone DHCP Server on Windows 2003 to Windows Server 2012R2. With this migration, I like to use the 2012R2 Load Sharing Mode feature for DHCP. This implementation cover TWO sites.
My initial plan was to have two Windows 2012R2 DHCP Servers (virtual) at each site thus servers at each offers site redundancy as well. So two at Site 1 and two at Site 2 on load sharing mode. If ServerA at Site 1 goes down for some reason Server B
at Site1 will service the DHCP clients in load sharing mode without going to Site 2. I came across a MS document that says:
Number of Servers: DHCP failover is not supported for more than two DHCP Servers. The failover relationship is always comprised of two DHCP servers.
Does this mean I can have only TWO DHCP Servers in a load sharing mode. One at Site 1 and the second one at Site 2??
Thanks in advance
TIA TP
Hi,
The DHCP failover relationship is comprised of DHCP server and its partner. In a relationship there are just 2 DHCP servers.
But this doesn’t mean you can just use 2 DHCP servers in your sites. The DHCP failover setting is based on DHCP scope, for one DHCP scope there could be just one DHCP failover relationship including 2 DHCP servers. If you have more than 1 DHCP scope,
for example, set DHCP failover relationship between DHCP server 1 and DHCP server 2 for scope A. then set DHCP failover relationship between DHCP server 1 and DHCP server 3 for scope B.
The document Step-by-Step: Configure DHCP for Failover(http://technet.microsoft.com/en-us/library/hh831385.aspx) is a introduction about this function and for your reference.
Depends on the DHCP scope’s configuration and the requirements of your network. You may enhance or customize the architecture of implementation.
Best Regards,
Eve Wang
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