IT:NETWORK:MICROSOFT SERVER 2

DHCP AND WINDOWS DEPLOYMENT SERVICES

DYNAMIC HOST CONFIGURATION PROTOCOL • MAC Address • IP Addressing • DHCP Client • DHCP Server • Scope • Exclusion Range • Reservations

HISTORY OF DHCP

THE ROLE OF DHCP • Dynamically assigns TCP/IP addresses • Dynamically assigns TCP/IP configuration information • Simplifies network administration

ETHERNET ADDRESS AND IP ADDRESS • Each machine has an Ethernet address and IP address • Ethernet is a unique 48 bit address • Also known as MAC (media access control) addresses

IP ADDRESSING RULES AND CONCEPTS • Addresses you cannot assign • • • • Default route address: 0.0.0.0

Loopback address: 127.0.0.1

Network number: 172.17.13.0

IP Broadcast address: 172.17.13.

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DYNAMIC HOST CONFIGURATION PROTOCOL • Used for manageability and automation of IP address assignment on networks.

• Ie. ISP’s use DHCP when you establish connection.

DHCP MESSAGE TYPES D H C P M e s s s s a g g e T T y y p DHCPDISCOVER e DHCPOFFER DHCPREQUEST DHCPDECLINE DHCPACK DHCPNACK DHCPRELEASE DHCPINFORM D e s s c c r r i i p t t i i o n Used by clients to request configuration parameters from a DHCP server Used by servers to offer IP addresses to requesting clients Used by clients to accept or renew IP address assignment and to decline unaccepted servers Used by clients to reject an offered IP address Used by servers to acknowledge a client’s acceptance of an offered IP address Used by servers to reject a client’s acceptance of an offered IP address Used by clients to terminate an IP address lease Used by clients to obtain additional TCP/IP addresses

THE INITIAL DHCP LEASE PROCESS

DHCP LEASE RENEWAL PROCESS

LEASES, CLIENT OPTIONS EXCLUSIONS AND RESERVATIONS • • • • A lease determines how long the client will maintain the same IP address before it is issued a new lease of another IP address Client options are configured during the setup or after. They can range from simply setting the default gateway, DNS and WINS servers to Network Time Servers and NetBios Settings Exclusions are IP Addresses within the scope that you do not want assigned dynamically. For instance you may statically assign your server’s IP address and do not want that assigned to another machine. What would happen if it did assign it’s own IP address?

•

A single exclusion can be created or a range of exclusions

Reservations ensure that the same MAC gets the same ip address every time. Reservations are created within the scope.

DHCP MANAGEMENT CONSOLE

WHAT IS A DHCP SCOPE?

WHAT ARE DHCP CLIENT RESERVATIONS?

Client reservations permanently reserve a specific address for a specific client.

MANUALLY RENEWING/RELEASING

IPCONFIG /RELEASE Releases IP Address configuration and lease

IPCONFIG /RENEW Request to renew same IP address or new IP Address

WINDOWS DEPLOYMENT-2008 R2 • What is Windows Deployment Services • Installation Planning • Automated Installation • Microsoft Deployment Toolkit (MDT)

WHAT IS WINDOWS DEPLOYMENT SERVICES?

• Enables rapid deployment of Windows to computers via a network based installation.

• • Formerly known as Remote Installation Services

WHAT IS WINDOWS DEPLOYMENT SERVICES?

• Requirements: • Deployment server is either a member server or a domain controller within a domain.

• • • Active DNS server on the network Active DHCP server on the network Server has a NTFS partition to store images on

WHAT IS WINDOWS DEPLOYMENT SERVICES?

INSTALLATION PLANNING • Do you upgrade or perform a clean installation?

• Upgrade options to consider: • Roles/Features installed on legacy system will be installed during the upgrade • Clean installation does not install any roles or features during installation • How should the drives be partitioned?

• Review requirements, minimum system partition is 32GB

INSTALLATION PLANNING Can/should you perform an automated installation?

• What would you need?

Decide on naming conventions for server.

Determine network configuration and security requirements.

Apply any firmware or BIOS updates to hardware.

INSTALLATION PLANNING Installation strategies: • High Touch Installation(HTI)  A hands-on, manual deployment, where you installing the Windows operating system on each client computer by using the retail installation DVD, and you manually configure each computer. This strategy can save your organization time and money by helping you automate portions the installation process.

INSTALLATION PLANNING Installation strategies: • Lite Touch Installation(LTI) process is automated.

 This strategy requires limited interaction during deployment. Interaction occurs at the beginning of the installation, but the remainder of the • Zero Touch Installation(ZTI) Manager 2012 ( us/library/gg682129.aspx

).  This strategy requires no interaction during deployment. The process is fully automated through Systems Center Configuration http://technet.microsoft.com/en-

INSTALLATION PLANNING 10 steps in deployment process: •Import source files to management computer •Create task sequence and boot image for reference computer •Update deployment share with source files, boot image and task sequence •Transfer source files, boot image and task sequence from the deployment share to the reference computer.

•Run deployment wizard on the reference computer and capture image.

•Send captured image back to the management computer.

•Create task sequence and boot image for target company, using image captured in #5 as source.

•Update deployment share with boot image source files and task sequence •Transfer source files, boot image, and task sequence from the deployment share to the target computer •Run deployment wizard on the target computer.

AUTOMATED INSTALLATION OPTIONS Windows Deployment Services (WDS)  application used to rapidly deploy workstations by using installation files or a preconfigured image (Windows Image *.WIM file). • Servers and/or workstations can be deployed with little administrative interaction.

Requirements for WDS: • Active Directory • Dynamic Host Configuration Protocol (DHCP) • Pre-boot Execution (PXE) enabled network interface card (NIC) • NTFS formatted non-system drive • Functioning DNS

QUESTIONS?