This document discusses planning a network services infrastructure. It explains that an infrastructure consists of physical and logical elements and follows a plan-implement-maintain process. Key aspects covered include selecting protocols like TCP/IP, Ethernet, and DHCP/DNS for networking services. Design considerations involve goals like functionality, security, availability and performance. The document provides an overview of important network infrastructure concepts.

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