Multivendor Networking Within Operating Systems Computer Science Essay

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Introduction: different type of Operating system at present now. For important work networking each other that's multivendor networking. Description: The biggest trials of a network administrator's trade involve connecting systems that use different vendors' network operating systems (NOSs). Multivendor environments work ably, the server's operating system, the clients' operating systems. The redirectors must be well-matched. A moral example is an environment in which one computer runs Windows XP or Windows Vista with the client for Microsoft networks, one computer runs Linux with Samba, one client runs Mac OS, and the server runs Windows Server 2003. In this environment, the computer running Windows Server 2003 can support all clients on the network. Operating systems as of different vendors use different systems to access files across a network. Windows OSs uses the Common Internet File System (CIFS), which is just an original version of the SMB protocol. Instinctive to Linux and UNIX is the Network File System (NFS). The instinctive Macintosh protocol for accessing network files, which is part of the AppleTalk protocol suite, is AppleTalk Filing Protocol (AFP), and Novell NetWare uses NetWare Core Protocol (NCP). Two basic ways for get the file systems from different OSs to connect: from the client end and from the server end.

FIG 1: Client based multivendor solution

Conclusion: Multivandor is different Operating system networking each other. Its vary helpful for technology save cost.

Thin clients

Introduction: Networks today becoming more and more versatile. All are want to network implement vary low cost. This is thin client.

Description: Come to of OSs take in capability for thin clients to connect to the server, right to use resources, and run applications, all with a lot fewer resources than a typical desktop computer. Thin clients add the follow profit to the computing site:

â-  No removable storage: Devoid of a floppy make or additional not fixed storage disk,

People can't copy aware files from the common server to take home. In

Addition, virus can't be bringing into the company LAN via this medium type.

â-  No hard drive: Devoid of a hard drive, little configuration tasks are needed on the local thin-client computer. As a result when the OS or applications must be upgraded, they want to be upgraded only at the server, which decrease harms caused by old or irreconcilable software. Not have hard disk saves money and improve reliability. Enquire of a hard disk also capital that viruses have no rest to live on the machine.

â-  Lower total cost of ownership: Thin clients typically cost less than a full-blown desktop PC. In addition, because these computers can be managed completely from a central server, support costs are vividly lower. So, the total cost of rights of thin clients is considerably fewer than desktop PCs.

Client-Based Solutions

It's the profession of the client's redirector to seize communication from the client and in advance those messages to the right server if a order can't be satisfied locally. In a multivendor situation, many redirectors can be bursting on to a single client to make easy connections to unlike vendors' servers. This setup is called a client-based multivendor solution. Figure 9-1 shows the Local Area Connection Properties of a Windows XP client that has both the Client Service for NetWare and the Client for Microsoft Networks installed. For example, if a Windows XP client requires access to Windows Server 2003 and a Novell NetWare server, you can load a redirector for each OS on to that client. Each redirector redirects a request to the appropriate server, as shown in When multiple client redirectors are installed on a single OS, adjusting the bindings of those redirectors might be necessary to ensure that the network protocols used with each redirector are appropriate and arranged in priority order. For example, if TCP/IP is the only protocol used for accessing Microsoft servers; unbinding the NW Link protocol from the Client for Microsoft Networks might be necessary.

Binding and unbinding client redirector to protocols is done in the Advanced Settings dialog box via Control Panel's Network Connections window. Redirectors can also be arranged in priority Order by using the Provider Order tab in this same dialog box, thereby allowing you to ensure that the client of the most frequently used resources (Microsoft or NetWare) is accessed first. Prioritizing client software speeds access to network resources.

Windows XP

workstation

Novell NetWare

server

Windows

Server 2003

Microsoft redirector Client for NetWare

networks (redirector)

Implementing Multivendor Solutions

9

Within a network with in cooperation Windows and Linux servers and clients, a similar solution is essential. The local Linux file-sharing protocol is called NFS. For a Windows client OS to access NFS resources on a Linux server, NFS client software necessity is installed on the Windows OS. Windows installation CDs don't come up to with the essential software, other than it can be downloaded free of charge from the Microsoft Web site in a package called Windows Services for UNIX. Equally, for a Linux client computer to right of entry Windows server resources, Windows compatible client software must be installed and configured on the Linux computer. The client software that allows Linux computers to access Windows file and printer shares is called Samba..

As you see in the next section, installing multiple clients on computers is not the only way to implement multivendor solutions. Installing appropriate server software on your network servers to accommodate a variety of clients is another multivendor option.

Server-Based Solutions

To realize a server-based multivendor solution, software must be overloaded on the server to give services for a particular client. For example, if a Windows Server 2003 network includes Macintosh computers, the administrator be able to add Services for Macintosh to any of the Windows server operating systems. Windows Server 2003 NOSs include this service, which supplies a simple solution for Macintosh connectivity. (You practice installing server services in the Hands-On Projects at the end of this chapter.)

Redirectors

A redirector is an operating system driver to sends data near and receives data as of a remote device. Network redirectors provide mechanisms to locate, open, read, write, and delete files and submit print jobs.

It provides application services such as named pipes and Mail Slots. When an application needs to send or receive data from a remote device, it sends a call to the redirector. The redirector provides the functionality of the application layer and presentation layer of the OSI model.

Networks Hosts communicate through use of this client software: Shells, Redirectors and Requesters.

In Microsoft Networking, the network redirectors are implemented as Installable File Systems (IFS).

Task-2

http://www.webopedia.com/TERM/D/diskless_workstation.html

A workstation or PC on a local-area network (LAN)

Those do not have own disk. Instead, it supplies files on a network file server. Diskless workstations can condense the overall cost of a LAN since one large-capacity disk drive is typically less classy than several low-capacity drives. In calculation, diskless workstations can shorten backup and safety since all files are in one place -- on the file server. Also, access data beginning a big remote file server is a lot faster than accessing data from a small local storage device.

One difficulty of diskless workstations, though, is that they are useless if the network fails.

Even as the workstation is a PC, it is often called a diskless PC or a Net PC.

Hardware

Type

Configuration

Price $

Memory module

Ram

Kingston 1GB DDR2 SDRAM Memory Module

$20

Intel ITX solution

ITX (mother board with processor, ram integrated)

Intel Desktop Board D510MO with integrated Intel Atom processor D510 - motherboard - mini ITX

$79

Serener GS-L08 Fanless Pico-ITX Case

ITX case(USB port ,LAN port , Fanless)

ITX case

$29

Keyboard and mouse pack

Keyboard and mouse

Logitech 920-002565 Desktop MK120 - KEYBOARD;MOUSE

$17

SanDisk Cruzer USB flash drive - 4 GB

Flash drive

Removable storage drive

$6

Samsung SyncMaster 930B - 19" TFT active matrix LCD display

Monitor

Samsung LCD monitor

Samsung SyncMaster 930B - 19" TFT active matrix LCD display

$123.00

total

$248

The company scenario:

It is upon a company to choose between brad or custom solution below are the price comparison between different solution offered today in the market based on price prospective of a estimate of 100 PC workstation environment

Custom solution(without server):

cost

Total workstation costing pc x 100

$24,800

OS costing (linux)

0

OS costing (windows) x1

$995

Total

Linux - $24800

Windows - $25,7

Brand solution(windows without server):

Total workstation costing pc x 100

$49,200 or 34,44000 tk

Total

$49,200 or 34,44000 tk

Brand solution(Linux without server):

Total workstation costing pc x 100

$45,000 or 31,50000 tk

total

$45,000 or 31,50000 tk

Brand solution(All in 1):

Total workstation costing pc x 100

$67,500 or 47,25000 tk

Total

$67,500 or 47,25000 tk

Employee cost

Employee type

Total cost

Description

Network manager

$300

Setting up the network

Hardware technician

$150

Setting up the system

total

$450

Task-3

Network infrastructure

Exchanges in data centers today are nearly all frequently based on networks operation the IP protocol suite. Data centers contain put of routers with switches that transport traffic connecting the servers and to the outside world. Being without a job of the Internet connection is frequently provided by using two or more upstream service providers.

Several of the servers by the data center are used for operation the basic Internet and intranet services wanted by internal users in the organization, exam: proxy servers, e-mail servers and DNS servers.

Network securities basics are also usually deploy: firewalls, VPN gateways, invasion finding systems, etc. Also ordinary are monitoring systems for the network and a few of the applications. Additional off site monitoring systems are also typical, in case of a crash of connections inside the data center.

Thin clients

Introduction: Networks today becoming more and more versatile. All are want to network implement vary low cost. This is thin client.

Description: Come to of OSs take in capability for thin clients to connect to the server, right to use resources, and run applications, all with a lot fewer resources than a typical desktop computer. Thin clients add the follow profit to the computing site:

â-  No removable storage: Devoid of a floppy make or additional not fixed storage disk,

People can't copy aware files from the common server to take home. In

Addition, virus can't be bringing into the company LAN via this medium type.

â-  No hard drive: Devoid of a hard drive, little configuration tasks are needed on the local thin-client computer. As a result when the OS or applications must be upgraded, they want to be upgraded only at the server, which decrease harms caused by old or irreconcilable software. Not have hard disk saves money and improve reliability. Enquire of a hard disk also capital that viruses have no rest to live on the machine.

â-  Lower total cost of ownership: Thin clients typically cost less than a full-blown desktop PC. In addition, because these computers can be managed completely from a central server, support costs are vividly lower. So, the total cost of rights of thin clients is considerably fewer than desktop PCs.

Drawbacks

The disadvantage of thin clients can also be unspoken as the advantages of thin clients. Example, thin client servers need a high performance level, since this is where the bulk of dispensation takes place. In difference, thin clients perform much of be in possession of processing on their end ahead of sending it to servers. Therefore, thin clients make servers expensive and complicated.

Thin clients do not sustain multimedia-rich application, like video gaming. Multimedia-rich applications involve an important amount of bandwidth to purpose to their maximum potential. Thin clients' use of rather little bandwidth signify that animation; video, and other graphic facial look are not well support in this environment. Example, thin clients are often beleaguered and end working when they are necessary to stream media or use Flash players.

Operating systems like to Windows are designed to run on local resources. This actually makes them less elastic, in direct disagreement to it future goals. Because thin clients run on remote resources it may be hard to run these systems on thin client-server networks. Soaring latency networks, where the lag time in transfer data over a network is long, can make thin clients not viable. If a network is down, there is no mode for a thin client to right to use the server and giving out power it needs to reply to requests. In contrast, thick clients can continue to work offline if a network is down. This single point of failure means that thin clients are barred from with and desktop applications and may result in gone work.

[Reference: http://www.exforsys.com/tutorials/client-server/client-server-technology-thin-clients/1.html]

Task 4

Introduction: installing thin client in a computer requires some additional steps to be taken along side software installation like setting up the terminal creating an environment for network booting, etc below I have shown the method of installing and setting up a popular thin client based OS called " Thin station "

THINSTATION

Thin station is a lightweight client Operating System for thin clients which has a rebuilt function of connecting to the server, thin station is based on Linux architecture but is able to run in any server environments. it is mostly meant for office school labs and other business environments

Preparing windows for installing thin station

Booting from a flash drive or compact disc

A free tool called magic disc can be found in

http://www.magiciso.com/tutorials/miso-magicdisc-overview.htm?=magiciso

After installation a virtual disc drive should appear in my computer amongst drives

Next insert the flash drive to the peripheral

Installing thin station

A self extracting precompiled image file can be downloaded from http://www.thinstation.org/

The setup file extracts into C:\Documents and Settings\Administrator\Thinstation-2.2.2\prebuilt

The following steps should be taken in order to built an iso with user configuration

mount the iso using magic disc mentioned before and copy the files from iso to "C:\Documents and Settings\Administrator\Thinstation-2.2.2\prebuilt\LiveCD\desktop\RebuildIsoWithConf\cd-files"

copy the "thinstation.profile" from "C:\Documents and Settings\Administrator\Thinstation-2.2.2\prebuilt\LiveCD\desktop\Floppy" and copy it to "RebuildIsoWithConf\cd-files"

run rebuild-iso.bat from "C:\Documents and Settings\Administrator\Thinstation-2.2.2\prebuilt\LiveCD\desktop\RebuildIsoWithConf"

above steps are independent to cd or flash drive below steps should be taken for compact disc or flash boot

booting from cd

Upon writing the image file to cd the thinstation should boot up from the cd device

booting from flash drive

a new image should appear in the folder labeled "RebuildIsoWithConf"

Next by using the xcopy command in the command prompt files in the cd drive can be written in the removable drive

"xcopy G:\*.* h: /s/e/f"

Where G is the virtual CD drive and H is the flash drive

Upon choosing the boot media as flash drive the thinstation should boot autometically

The thinstation interface

Terminal interface when thinstation is loading

A screen shot of thinstation booting up

GUI interface of thinstation

Setting up Terminal Services for connecting thin station to the server:

Go to Start menu >Administrative tools> configure your server wizard and choose terminal server and press next two times to confirm the system will restart with confirmation

A box should appear as a confirmation of the system of being a terminal server press finish to exit

Go to Control Panel > Add/Remove >Windows Components Wizard section. Click on Terminal Server Licensing and follow the installation instructions.

Go to Terminal Server Licensing console > Activate Server

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