1. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 1 of 21
Session 1
Planning a Network
Service
Infrastructure

2. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 2 of 21
Objectives
 Explain Network Services Infrastructure
design
 Identify the protocols for the Network
Infrastructure design
 Identify the Data-Link layer protocol
 Discuss the Networking services
 Analyze the Organizational goals

3. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 3 of 21
Network Infrastructure
 Network Infrastructure consists of:
 Physical infrastructure: Provides the basic
design of the network
 Logical infrastructure: Consists of the
software elements that connect, maintain,
and provide security to the hosts on the
network

4. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 4 of 21
Network Services
Infrastructure Stages
 Steps in designing a Network
Services Infrastructure are:
 Plan
 Implement
 Maintain
Networking
Services
Infrastructur
e
Implement
Plan
Maintain

5. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 5 of 21
Selecting the Protocols for the
Network
 The Open Systems Interconnection (OSI)
reference model defines a networking framework
for implementing protocols such as TCP/IP and
Ethernet

6. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 6 of 21
Selecting the Protocols for the
Network Contd…
 Physical layer (layer 1) – Specifies the signals
transmitted over the network
 Data-Link layer (layer 2) – Furnishes
transmission protocol knowledge, management and
handles errors in the Physical layer
 Network layer (layer 3) – Defines the functions
that provide communication between computers on
different networks

7. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 7 of 21
Selecting the Protocols for the
Network Contd…
 Transport layer (layer 4) – Guarantees data delivery
and ensures error detection
 Session layer (layer 5) – Establishes, maintains and
ceases connections between applications
 Presentation layer (layer 6) – Translates the
computer syntax into a readable format
 Application layer (layer 7) – Supports application
and end-user processes

8. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 8 of 21
Data-Link Layer Protocol
 We must consider the following criteria while
selecting the Data-Link layer protocol:
 Type of Media
 Transmission speed
 The most widely used Data-Link layer
protocol is the Ethernet

9. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 9 of 21
Types of Media
 Local Area Networks
are developed using:
 Unshielded Twisted
Pair (UTP)
Transmission Media
 Fiber Optic
 Wireless Networking

10. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 10 of 21
Transport Layer Protocol
 Windows Server 2003 supports three
transport layer protocols such as:
 Transmission Control Protocol/Internet
Protocol (TCP/IP)
 Internetwork Packet Exchange (IPX)
 NetBEUI

11. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 11 of 21
TCP/IP
 Communicates using the IP (Internet Protocol),
TCP (Transmission Control Protocol) and UDP
(User Datagram Protocol) protocols

12. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 12 of 21
IPX
 Communicates using the following
protocols:
 Sequenced Packet Exchange (SPX) –
Connection-oriented transport layer
protocol
 NetWare Core Protocol (NCP) –
Equivalent of UDP

13. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 13 of 21
NetBEUI
 Uses the NetBIOS namespace to
identify computers on the network
 We can install the NetBEUI on Windows
Server 2003 computer using the
installation files to check network
communication problems.

14. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 14 of 21
Selecting Networking Services
 The network design process
involves:
 Network Foundation
 Internet Connectivity
 Integrated Design for
Networking Services
Infrastructure
 Remote Access
Connectivity

15. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 15 of 21
Network Foundation
 Enables the IP
addressing support,
automatic client
configuration, and
services for name
resolution
 The networking services
are:
 TCP/IP
 DHCP
 DNS

16. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 16 of 21
Internet Connectivity
 Enables remote users to
access the internal
network through the
internet without any risk.
 The Networking
services are:
 NAT
 Microsoft Proxy
Server

17. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 17 of 21
Connectivity for Remote
Access
 While designing the Network services
infrastructure, we must use the routing services
to connect multiple physical segments placed in
the same geographical locations

18. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 18 of 21
Infrastructure design
 We must provide the required networking
solution to the organization through:
 Management Strategy Design
 Combination of services
 Organizational Network solution

19. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 19 of 21
Analyzing Organizational
Goals
 While designing the network services
infrastructure we must take the following points
into consideration:
 Functionality
 Security
 Availability
 Performance

20. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 20 of 21
Summary
 Network Services Infrastructure design depends on the
execution of three phases:
 Plan
 Implement
 Maintain
 The design process involves:
 Network Foundation
 Internet Connectivity
 Remote Access Connectivity
 Infrastructure design

21. Microsoft Windows Server 2003 Network Infrastructure – Planning and Maintenance/ Session 1 / Slide 21 of 21
Summary Contd…
 A Network Infrastructure is made up of the Physical and
the Logical infrastructure
 The Open Systems Interconnection (OSI) reference
model defines a networking framework for implementing
protocols
 The Data-Link layer protocol is one of the main decisions
to be taken while designing the network infrastructure
 Common network services include TCP/IP, DHCP, DNS,
and WINS
 Remote Access Connectivity can be achieved through IP
Routing, Routing and Remote Access, and RADIUS