DHCP Server Callout DLL for MAC Address based filtering

DHCP Server team is excited to announce that the much appreciated and loved feature, MAC Address based filtering, (previously provided by this callout dll) is now a part of Windows Server 2008 R2 DHCP Server. Check out the blog.        The MAC Address filtering feature in Windows Server 2008 R2,   has provision for both Allow and Deny lists,…

304

DHCP Failover Hot-Standby Mode

In the previous blog on DHCP Failover, we discussed the DHCP failover load balance mode where both DHCP servers respond to client requests and load balance the requests between them based on an admin specified load distribution ratio. In the other mode of a failover relationship, known as the Hot-Standby mode (Active-Passive), only one of…

71

Ensuring High Availability of DHCP using Windows Server 2012 DHCP Failover

Introduction Ensuring high availability of critical network services like DHCP figures high in the list of priorities for any enterprise. In an environment where clients get their IP addresses and network configuration automatically, uninterrupted network connectivity is dependent on the availability of DHCP service at all times. Let us consider for a moment what high…

57

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…

56

Installing and Configuring DHCP role on Windows Server 2012

With the new Server Manager in Windows Server 2012, there have been some changes in the way DHCP role will be installed. The blog post describes, in the sections below, installation and configuration of DHCP Role using Server Manager and PowerShell on Windows Server 2012. Before starting, the user needs to ensure that he/she logs…

51

Migrating existing DHCP Server deployment to Windows Server 2012 DHCP Failover

Introduction This article provides information on how to migrate an existing DHCP server deployment on Windows Server 2008 or Windows Server 2008 R2 to Windows Server 2012 DHCP Failover. DHCP Failover feature requires two Windows Server 2012 on which the DHCP role is installed. To migrate from an existing DHCP server deployment to use DHCP…

50

DHCPv6 Behaviour in Windows Vista

Windows Vista introduces support for DHCPv6. The DHCPv6 client implementation in Windows Vista is compliant with RFC 3315. It supports 2 modes of operation: a stateless mode and a stateful mode of operation.   DHCPv6 Stateless mode is where the host uses a non-DHCPv6 method to obtain an IPv6 address, and uses DHCPv6 only to obtain…

47

Option based IP Address assignment Callout Dll

Overview DHCP administrators would like to manage address assignment in the network, by assigning IP address to DHCP clients based on vendor/user class identifier from distinct address ranges in the subnet. This functionality can be added to the Microsoft DHCP Server, by installing DHCP Server Option Based IP Address Assignment Callout package. This callout dll…

46

Bringing PowerShell to DHCP Server

Windows server 2012 comes with PowerShell support for DHCP server role. It provides DHCP administrators a modern, uniform way to manage DHCP servers both locally and remotely, through the command line. These cmdlets get enabled by default when you install DHCP role or DHCP RSAT (Remote Server Administration Tools). The DHCP cmdlets have been designed to…

40