Load balancing DNS servers using DHCP Server Policies

This blog is authored by Ken Johnson, Senior Premier Field Engineer, Microsoft. DNS is one of the critical services needed for accessing network resources.  Response time of the DNS server is critical to the speed and performance of relying services.  These two blogs have the timeout information and DNS client behavior explained in detail (DNS…

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Windows Server 2012 R2- Enhancing DHCP policies and DNS registrations in DHCP server

Introduction Windows DHCP server can perform registration of DNS records with the DNS server on the behalf of its clients. Windows Server 2012 R2 enhances this DNS registration functionality in DHCP server. It provides you more flexibility in registering clients with the DNS server. You can now configure the DHCP server to perform registration only…

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DHCP Policies using PowerShell

The DHCP server role in Windows Server® 2012 introduces DHCP Policies also referred as Policy Based Assignment (PBA), a feature that enables users to create policies at scope or server level for assigning IPv4 addresses and options to DHCP clients based on attributes like Vendor Class, User Class, MAC Address etc.  The DHCP Policies blog…

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DHCP policies based on Relay Agent Information Option (option 82), DHCP Snooping and IP Source Guard

Introduction DHCP server in Windows Server 2012 provides support for provisioning customized IP address and network configurations to DHCP clients using DHCP policies. Policies can be created based on several criteria one of which is relay agent information option – commonly referred as option 82. To get a better understanding on DHCP server policies and…

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Setting up DHCP Policies for Virtual Machines

Introduction With the trend towards private cloud and hosted cloud deployments, the use of virtualization is ubiquitous. This has also increased the need for better control of these virtualized environments with respect to IP address and network configuration provisioning. DHCP policies, a new feature in DHCP server in Windows Server 2012, enables flexibility and granular…

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Using DHCP policies to set different lease durations for different device types

Introduction An enterprise network has several types of devices – desktops, printers, mobiles, laptops etc. An enterprise administrator would need to ensure that all these different types of device are provisioned appropriately for network connectivity. This requires that they have a valid IP address – either assigned statically or leased out by the DHCP server. An enterprise also has…

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Scope-level Link layer filtering using DHCP Policies in Windows Server 2012

Introduction Link-layer filtering was a DHCP feature introduced in Windows Server 2008 R2 where one could allow or restrict access to clients based on their MAC address. However the caveat in this feature was that this was possible only at the server level. One of the frequent asks we‘ve had since is a desire for…

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DHCP Policies in Windows Server 2012

Introduction In the recent blogs about DHCP server in Windows Server 2012, we discussed DHCP Failover – a new mechanism for achieving high availability of the Windows DHCP server and DHCP PowerShell – the new command line interface for managing Windows DHCP server. This blog discusses another new feature in DHCP Server in Windows Server…

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