In the past most large enterprises and hosters have

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multitenant cloud environments. In the past, most large enterprises and hosters have relied on either spreadsheets, custom software developed in-house, or third-party commercial programs for keeping track of IP addressing schemes, DHCP server configurations, and DNS server configurations. Beginning with Windows Server 2012, however, Microsoft introduced an in-box solution for performing these kinds of tasks. That in-box solution is IPAM.
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IPAM enhancements CHAPTER 5 107 IPAM in Windows Server 2012 IPAM is an integrated set of tools that helps you plan, deploy, manage, and monitor your IP address infrastructure. IPAM includes functionality for performing address space management in multiserver environments and includes monitoring and network auditing capabilities. IPAM can automatically discover the IP address infrastructure of servers on your network and allows you to manage them from a central interface that is integrated into Server Manager. IPAM is an agentless technology that works together with the Active Directory Domain Services (AD DS), DHCP Server, DNS Server, and Network Policy Server (NPS) roles of the Windows Server platform. Some of the capabilities of IPAM in Windows Server 2012 include: Integrates management of IP addresses, domain names, and device identities Organizes, assigns, monitors, and manages static and dynamic IPv4 and IPv6 addresses Automatic discovery of domain controllers, DHCP and DNS servers, and dynamic IP addresses in use Provides custom IP address space display, reporting, and management Tightly integrates with Microsoft DNS and DHCP servers Centralizes configuration and update of Microsoft DHCP and DNS servers Monitors and manages specific scenario-based DHCP and DNS services Tracks and audits changes and provides real-time view of status Audits server configuration changes and tracks IP address use Although IPAM in Windows Server 2012 provided enough functionality for some organizations, other organizations (especially hosters) wanted something more. That something more has now arrived with the enhanced IPAM included in Windows Server 2012 R2. IPAM in Windows Server 2012 R2 IPAM in Windows Server 2012 R2 represents a significant step forward in simplifying the management of addressing and DNS/DHCP server management both for large enterprises and especially for cloud hosting providers. Let’s examine some of these improvements now. First and perhaps most importantly, IPAM in Windows Server 2012 R2 now allows you to manage your virtual address space in addition to its physical address space. This means that enterprises that have a mixture of physical and virtual environments now have an in-box unified IP address management solution. Figure 5-5 shows the new Virtualized IP Address Space option in the IPAM page of Server Manager and some of the available configuration options.
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