Posts Tagged ‘RRAS’

Windows Server RRAS: Change Initial DHCP Reservation Size

Saturday, March 2nd, 2013

Woods Networks¬†offered a great solution to a common pester in Server 2003-2012. The Routing and Remote Access feature that allows for VPN connections to the target domain takes reservations in the DHCP server in blocks of 10. It would occasionally steal other computers’ IP addresses and cause conflicts on the network from consuming all of the lower IP range. Although there is a built in feature to set a static range, doing so prevented full connectivity to the subnet that the DHCP server and clients resided on. The following simple registry edit will allow you to change the default reservation size.


Value Name: InitialAddressPoolSize

Data Type: REG_DWORD

Default: 10

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