Fundamental problem when you have two dhcp servers and the scopes split, is that human error creeps in and you may get DHCP reservations that have different IP addresses on each server. Now probably you rarely have DHCP server failures that you cannot fix quite quickly, so you have never noticed this as the lease […]
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DHCP
DHCP – Find Duplicate MAC Reservations from 2012 R2 DHCP Server
The following code scans all scopes on a DHCP server and returns any reservations that have the same MAC address
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DHCP – Get a List of Scopes and Scope Options from 2012 R2 DHCP Server
This powershell script gets a list of scopes and scope options from the two servers in a split scope environment. This should work from a 2008 R2 DHCP server and higher It is rough and ready, but it works. I use out-gridview , so I can copy and pate into Excel. You will need to modify […]
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Rogue DHCP Server Detection
Handy tool for when you get BAD IP ADDRESS and 8 character mac addresses Rogue DHCP Server Detection
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DHCP 2012 r2 static reservations replication not working
So, we updated our DHCP Servers to 2012 R2. We setup DHCP Failover, which was easy to setup and seems very nice. But, we don’t see our static reservations migrating. Did I miss that leases are not part of the cluster, or is there a setting somewhere to have the reservations automatically replicated on the failover server?
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