Open Source Freeware Windows/Linux. MultiSubnet MultiDomain DHCP Server supports every Industry Standard Feature and DHCP Option.
In addition, two instances can be installed, which work in load shared fail safe mode. If one DHCP Server goes down, other can still renew the leases issued by failed server. Database of both servers remain in Synch and there are never any duplicate leases. It supports features like:-
Dynamic and Static Leases
Upto 125 DHCP Ranges and Upto 125 Listening Interfaces
MultiSubnet and Multiple Domains.
Relay Agents, BOOTP and PXE Boot
Automated, sophisticated DHCP Range Selection
DHCP Range Filters based on Mac, Vendor and User Class
Options can be specified Client Specific, Range Specific or Global
Lease Status in auto refreshing html page
Supports Duplicated Replicated Operation
Very simple to install and use, even by person not having DHCP concepts
Very low memory and CPU use