IT INFRASTRUCTURE

IT Infrastructure



Table of Contents

Introduction3

Campus Overview4

Services Needed in the Campus LAN6

Scope8

Campus LAN Design Considerations8

Enterprise Computing Trends9

Infrastructure Solutions13

Campus Architecture Overview14

Layered Approach14

Benefits and Challenges to the Layered Approach16

A Network Revolution16

Implementation: Access Layer17

Access Layer Design Considerations18

Wired Port Connectivity18

WLAN Connectivity18

PoE19

Virtual LAN and Spanning Tree Protocol20

Spanning Tree Protocol (STP)20

Issues with STP21

Using Layer 2 versus Layer 3 at the Access Layer21

Using Layer 3 at the access layer22

Access Layer Solutions23

Scalable Access Solutions with Virtual Chassis Technology23

Features and benefits24

Pay-as-you-grow scalability25

Carrier-class reliability26

Location independence26

Reducing CapEx and OpEx28

Wireless Solutions30

Aggregation Layer31

Core Layer32

Core Layer Considerations33

Challenges and Benefits33

Consolidating the Core and Aggregation Layers34

Conclusion36

References39

IT Infrastructure

Introduction

There is a passive background from which the corporate LAN has evolved. It engages highly active business component, and extremely noticeable fundamental asset which companies can depend upon in order to facilitate their everyday operations which are crucial to the success of their market (Crawford, 1982, pp. 13). The contemporary network is essentially accessible to the organizations and is a strategic instrument. Irrespective of the location, the network offers secure, fast, reliable, secure services at scale (Novitski, 1994, pp. 129). Adding to the centralization of data centers and applications, the data centers and servers are being consolidated by the enterprises in order to enable the simplification of the operations and reductions of costs (Zuboff, 1988, pp. 178).

The current campus infrastructure solutions are not able to fulfill the essentials that are required to offer the organizations a reliable and secure access which is of high performance for the users of the campus. They do not even offer the capabilities of the centralized management that are vital for the streamlining of operations and reduction of costs (Sun, 2000, pp. 40). A new campus LAN design fulfills the issues of connectivity, security, and performance challenges which enabling the primary Information Technology initiatives is required (Crawford, 1982, pp. 13).

Campus Overview

IT infrastructures are the backbone of the computer network of each company, and as such are of vital importance to the business. Every minute of "downtime" has considerable costs and impacts on organizations and on business operations. IT supports the customer in the design of procedures and Better infrastructure, including assessment of the cost / benefit ratio and supporting the client in analyzing problems and in planning activities, arriving at the solution implementation choices and management of the system adopted. The selection of technology includes products and services designed to increase the level of performance of the IT infrastructure and in parallel to support the customer in the monitoring process aimed at improving the control and cost optimization. Only a technological infrastructure constructed, managed, monitored by expert consultants as the best team of IT Infrastructure, using highly reliable products, allows you to keep high- level business performance.

The proper design of the architecture of the network and systems and their proper management help maintain ICT services efficient and responsive to the needs of the business: the IT infrastructure must be properly designed, configured, controlled as well as being maintained and updated according to business requirements, to contribute to productivity and ...