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 Failover supports BOOTP clients in Windows Server 2012 R2

DHCP Failover is a new feature in Windows Server 2012 which provides for high availability of DHCP service.  Two DHCP servers in a failover relationship synchronize the IP address lease information on a continual basis, there by keeping their respective databases up-to-date with client information and in sync with each other. In Windows Server 2012,…

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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 PowerShell Export Import cmdlets in Windows Server 2012

DHCP PowerShell in Windows Server 2012, in addition to providing cmdlets for DHCP server management, provides cmdlets for exporting (Export-DhcpServer) and importing (Import-DhcpServer) DHCP Server configuration and IP address lease data. Unlike NetSH.exe export/import functionality which uses binary file format for the exported data, these cmdlets are designed for human readability as well as modification…

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Automatic syncing of scope configuration changes between 2 DHCP failover servers

DHCP Failover is a new feature in Windows Server 2012 which provides for high availability of DHCP service.  Two DHCP servers in a failover relationship synchronize the IP address lease information on a continual basis there by keeping their respective databases up-to-date with client information and in sync with each other. However, if the user…

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Bulk load DHCP Reservations using DHCP PowerShell

Many organizations deploy DHCP server but choose to have complete control over the IP addresses given out to client computers. This is achieved by reserving an IP address for each client as opposed to letting them acquire a lease dynamically. If you are an admin at one such organization, you could probably have a long…

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DHCP MAC address Filter management made easy with DHCP PowerShell

Security and network administrators are increasingly wary of internal security threats, in addition to threats from the outside, due to the introduction of uncertified hardware and software on the network, such as personal portable computers and mobile devices that can be potentially compromised and not compliant to the security practices of the organization. Link layer-based…

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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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