Tài liệu Module 13: Networking Service Designs doc

Identifying the Essential Design Decisions Emphasize that while designing a network, it is essential to identify which networking services to include in the network design and where to p

Contents

Overview 1

Evaluating the Existing Configuration 2

Identifying the Essential Design Decisions 6

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Project Lead: Don Thompson (Volt Technical)

Instructional Designers: Patrice Lewis (S&T OnSite), Renu Bhatt NIIT (USA) Inc

Instructional Design Consultants: Paul Howard, Susan Greenberg

Program Managers: Jack Creasey, Doug Steen (Independent Contractor)

Technical Contributors: Thomas Lee, Bernie Kilshaw, Joe Davies

Graphic Artist: Kirsten Larson (S&T OnSite)

Editing Manager: Lynette Skinner

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Multimedia Development: Kelly Renner (Entex)

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Other product and company names mentioned herein may be the trademarks of their respective owners

Instructor Notes

This module provides students with the information needed to design networking solutions that support applications based on the requirements of an organization Students will use the knowledge of networking services (in terms

of features, functions, functionality, security, availability, and performance of the service) to design networking solutions for given scenarios

At the end of this module, students will be able to:

Identify the characteristics of the scenario that influence the design decisions

Describe the essential design decisions required to provide networking services

Describe the design decisions for securing the networking services

Describe the design decisions for improving the availability and performance of the networking services

Upon completion of the design lab, students will be able to design networking solutions that meet the requirements of a variety of given scenarios

Course Materials and Preparation

This section provides you with the required materials and preparation tasks that are needed to teach this module

Required Materials

To teach this module, you need the following materials:

Microsoft® PowerPoint® file 1562B_13.ppt

Preparation Tasks

To prepare for this module:

Review the contents of this module

Read any relevant information in the Windows 2000 Help files, the Windows 2000 Resource Kit, or documents provided on the Instructor CD

Review discussion material and be prepared to lead class discussions on the topics

Complete the lab and be prepared to elaborate beyond the solutions found there

Read the review questions and be prepared to elaborate beyond the answers provided in the text

Presentation:

75 Minutes

Labs:

120 Minutes

Module Strategy

Use the following strategy to present this module:

Evaluating the Existing Configuration Tell the students that in this module, they will use their knowledge of Microsoft Windows® 2000 networking services to design networking solutions Point out that they will test their knowledge by working on an organizational scenario

In this section:

• Explain that students will design networking solutions for an investment firm scenario Tell them that before designing a solution, they must identify the current status of the design project

• Explain that the design requirements and limitations must be identified when making design decisions

Identifying the Essential Design Decisions Emphasize that while designing a network, it is essential to identify which networking services to include in the network design and where to place the servers to provide essential support for the solution

In this section:

• Avoid spending too much time explaining the networking services Focus on the selection of the appropriate networking service for a given scenario

• Point out that the placement of servers running the networking services

is as important as selecting the appropriate service

• Emphasize that for each of the networking servers placed within any location, the design options for the service are specified

Providing Security

If the network is carrying confidential data, then it is the responsibility of the network designer to ensure that the network is secure In this section, brief the students on the potential security risks to networks and how to prevent those risks from occurring

Enhancing the Availability and Performance Point out that in a network design, certain networking services are essential for the continued operation of mission-critical applications When these networking services are unavailable or respond slowly, the applications that the services support also experience outages and slow performance

In this section:

• Emphasize that identifying the networking services that require improved availability and performance is the first step in making the solution available

• Explain that depending on the networking service, its availability and performance can be improved by adding servers, subnets, routers, proxy servers, and remote access servers

Lab Strategy

Use the following strategy to present this lab

Lab A: Creating Network Solutions

In the design lab, students will design a network solution based on specific requirements outlined in the given scenarios

Students will review the scenarios and the design requirements and read any supporting materials They will use this information, and the knowledge gained from the module, to develop detailed designs

To conduct this lab:

Read through the lab carefully, paying close attention to the instructions and

to the details of the scenario

Consider dividing the class into teams of two or more students

Present the lab and make sure students understand the instructions and the purpose of the lab

Remind students to consider any functionality, security, availability, and performance criteria provided in the scenario and how they will incorporate strategies to meet these criteria in their design

Allow some time to discuss the solutions after the lab is completed A solution is provided in your materials to assist you in reviewing the lab results Encourage students to critique each other’s solutions and to discuss any ideas for improving their designs

Overview

Evaluating the Existing Configuration

Identifying the Essential Design Decisions

Providing Security

Enhancing the Availability and Performance

The networking services in Microsoft® Windows® 2000 provide the foundation

to solve connectivity and protocol requirements for organizations You can integrate the networking services to be able to design networking solutions that establish a network foundation, provide access to public networks, include connectivity for remote users and locations, and support network-based applications and authentication methods

In this module, you will design a networking solution for an investment firm and address the basic functionality, security, availability, and performance features of the solution

When combined with Microsoft Proxy Server and Internet Information Services (IIS), the networking services in Windows 2000 can provide complete solutions for the investment firm

At the end of this module, you will be able to:

Identify the characteristics of the scenario that influence the design decisions

Describe the essential design decisions required to provide networking services

Describe the design decisions for securing the networking services

Describe the design decisions for improving the availability and performance of the networking services

In this module, you will

examine an investment firm

scenario and the design that

provides a solution to the

business requirements of

the firm

Evaluating the Existing Configuration

Current Project Status

Design Requirements and Limitations

To design a solution for the investment firm, you must identify the information that influences the design Based on that information, you make decisions about which networking services to include, along with which specifications to select for each service

To identify the information that influences the design, you must:

Examine the current project status

Examine the design requirements and limitations

Slide Objective

To describe the information

that influences the design

Lead-in

To design a solution for the

investment firm, you must

first identify the information

that influences the design

Current Project Status

New York

Router 4

London Tokyo

A well-established investment firm is expanding operations to include a larger online presence, and to provide remote access to broker and client information The existing connectivity between the New York, Tokyo, and London locations

is provided by:

Dedicated routers at each location

56 kilobits per second (Kbps) dedicated lease-lines between locations The following table lists the project milestones completed to date, and the reason these milestones were completed

Activity So that the

Upgrading the physical network Private network can support additional traffic

generated by the broker and trading applications Replacing Routers 1 and 3 with

higher-performance routers

Routers can support the additional traffic generated by the broker and trading applications Upgrading Internet connections

for the approved computer hardware architecture

Number of computers required to support the networking services can be determined

Slide Objective

To describe the current

status of the investment

firm

Lead-in

To design a solution for the

investment firm, you must

first identify the current

status of the design project

Delivery Tip

Ask the students to study

the slide and to list the

important points to be

considered for designing a

solution

Design Requirements and Limitations

New York

Router 4

London Tokyo

Applications

The investment firm uses a number of applications to conduct the day-to-day operations To create a solution for the investment firm, your design must provide:

Support for a mission-critical Web-based application that manages investment firm customers and their stock portfolios

Support for a mission-critical Web-based application that allows customers

to check their stock portfolios and to perform investment trading over the Internet

Private network access to all shared folders and Web-based applications from the New York, Tokyo, and London offices

Performance response times to allow a stock trade transaction to occur within three seconds

Administration of private network resources by using a directory services infrastructure

Authentication of users by using a directory services infrastructure

Support for all mission-critical applications to be available 24-hours-a-day, 7-days-a-week

Slide Objective

To describe the

requirements and limitations

of the investment firm that

influence the design

decisions

Lead-in

To design a solution for the

investment firm, you must

first identify the design

requirements and

limitations

Connectivity

The applications used by the investment firm require connectivity between the offices When creating the design for the investment firm, remember that your design must provide:

Simultaneous access to private network resources for approximately 200 brokers connecting through the Internet by using a variety of operating systems

Simultaneous access to Web-based applications for approximately 1,500 brokers and customers who are connecting through the Internet by using a variety of operating systems

Access to management aspects of the Web-based applications that are restricted to brokers and administrative staff

Access to the Internet from all locations for all private network users

Control of Internet access through a single path of connectivity through the New York headquarters

Isolation of the firm’s network from the Internet

Identifying the Essential Design Decisions

Identifying the Appropriate Networking Services

Providing Networking Services at the New York Location

Providing Networking Services at the Tokyo Location

Providing Networking Services at the London Location

As you begin designing the networking solution for the investment firm, you must identify which networking services to include in the network design Based on the networking services, you must identify where to place servers to provide essential support for the solution

You can select the networking services for your network design based on the types of clients, applications, connectivity between locations, and connectivity for remote users You must place the servers within the organization based on the number of clients, the geographic locations, and the amount of traffic between network segments

To provide the essential networking services for the investment firm, you must:

Identify the networking services that are required at each location

Determine the networking server placement and design options for New York

Determine the networking server placement and design options for Tokyo

Determine the networking server placement and design options for London

Slide Objective

To describe the decisions

that are essential to

providing the investment

firm solution

Lead-in

You must identify which

networking services to

include and where to place

servers to provide essential

support for the investment

firm

Identifying the Appropriate Networking Services

New York

Router 4

London Tokyo

The following table lists the networking services that you need to include in the network design, and the reason you must include them

Include this service To provide

Transmission Control Protocol/

Internet Protocol (TCP/IP)

A common protocol between clients and Internet connectivity

DHCP Automatic IP configuration for clients

DNS Name resolution for Web-based applications

Support for the Active Directory™ directory service

WINS Name resolution for Microsoft Windows 95, Microsoft

Windows 98, and Microsoft Windows NT® version 4.0 clients.Microsoft Proxy

Server

Isolation between the private network and the Internet

Different levels of security by creating screened subnets Caching of Internet requests

Routing and Remote Access

Connectivity between the various geographic locations within the organization

Connectivity for the brokers who connect to private network resources through a virtual private network (VPN) connection over the Internet

Isolation between the private network and the Internet

Slide Objective

To describe the decisions

involved in identifying the

include so that the

appropriate foundation for

supporting the users and

applications exists within the

network

Point out in the diagram that

Routers 2, 4, and 5 are

replaced with Routing and

Remote Access–based

routers Also note that the

connections to the Internet

are now established through

these new routers

Avoid spending too much

time explaining the

networking services here

Focus on selection of the

appropriate networking

service for a given scenario

Ask the students to list the

networking services that are

required for the scenario

Providing Networking Services at the New York Location

Router 1

Router 3

WINS DHCP DNS

Proxy Server

Subnet D

2 Hosts

For the New York location, determine where to place the servers and the options necessary to support your design

Placing Servers That Run the Networking Services

The following table lists the placement criteria for servers at the New York location

Place On Subnet(s) So that

DHCP B DHCP traffic travels across the minimum

number of network segments while protecting the server

DNS B DNS traffic travels across the minimum

number of network segments while protecting the server

WINS B DNS traffic travels across the minimum

number of network segments while protecting the server

Router B, E Packets are routed between the screened

subnet and the private network while protecting private network resources VPN remote access D Remote access is provided while protecting

private network resources

Proxy Server B, E HTML and FTP traffic is filtered through the

Proxy Server while protecting private network resources

Slide Objective

To describe the decisions

involved in placing the

appropriate servers within

the New York location

Lead-in

You must determine the

networking services design

options to place the servers

within the New York

location

Point out that all servers not

running networking services

and all client computers

have been removed from

the slide for clarity

purposes

Specifying Networking Services Design Options

The following tables outline the options that you need to specify in your network design for each of the servers in the New York location

DHCP

Specify To

DHCP scope for Subnets A and C Provide automatic IP configuration for the

DHCP clients on Subnets A and C Bootstrap Protocol (BOOTP) forwarding

on Router 1 and Router 2

Enable the forwarding of DHCP packets between Subnets A, B, and C

DNS updates Register new DHCP clients with DNS

DNS

Specify To

Active Directory integrated zone Use the existing Active Directory

infrastructure, and to act as the repository for the DNS zone information

Dynamic updates from the DHCP server Authorize the DHCP server to perform

updates within the DNS zone

WINS

Specify To

Burst handling Respond to a large number of

simultaneous WINS registration requests.Replication with the Tokyo and London

with existing routers

Internet Protocol Security (IPSec) tunnel Encrypt data between locations, and to

authenticate the router

Remote access policy Force encryption of all data between the

remote access clients and the VPN remote access server

Microsoft Challenge Authentication Protocol (MS-CHAP) authentication

Provide encrypted authentication and support encryption by using MPPE

the broker and trading applications

Enable access to the broker and trading applications from users on the Internet

Providing Networking Services at the Tokyo Location

Placing Servers That Run the Networking Services

The following table lists the servers that are placed within the Tokyo location, the subnets on which the servers are placed, and why the servers are placed on the respective subnet within your design

Place On Subnet(s) So that

DHCP F DHCP traffic travels across the minimum number of

network segments while protecting the server

DNS F DNS traffic travels across the minimum number of

network segments while protecting the server

WINS F DNS traffic travels across the minimum number of

network segments while protecting the server

Router F, G Packets are routed between the screened subnet and the

private network while protecting private network resources

The DHCP, DNS, and WINS servers were placed on Subnet F because Subnet F contains the majority of client computers at the Tokyo location

Slide Objective

To describe the decisions

involved in placing the

appropriate servers within

the Tokyo location

Lead-in

The Tokyo location is a

branch office consisting of

fewer computers than New

York and London; therefore,

it has different networking

services requirements

Delivery Tip

Check the students’

understanding of content by

asking them why all of the

computers have been

placed on Subnet F

Point out that all servers not

running networking services

and all client computers

have been removed from

the slide for clarity

purposes

Note

Specifying Networking Services Design Options

For each of the networking services servers that you place within the Tokyo location, you must specify the design options for the service

The following tables list the related design options by networking service, and the reason for specifying the options in your design

DHCP

Specify To

DHCP scope for Subnets F and G Provide automatic IP configuration for the

DHCP clients on Subnets F and G DHCP Relay Agent on Router 4 Enable the forwarding of DHCP packets

between Subnets F and G

DNS updates Register new DHCP clients with DNS

DNS

Specify To

Active Directory integrated zone Use the existing Active Directory

infrastructure, and to act as the repository for the DNS zone information

Dynamic updates from the DHCP server Authorize the DHCP server to perform

updates within the DNS zone

WINS

Specify To

Burst handling Respond to a large number of

simultaneous WINS registration requests.Replication with the New York server Ensure WINS resolution and registration

information with existing routers

IPSec tunnel Encrypt data between locations and to

authenticate the router

Providing Networking Services at the London Location

Placing Servers That Run the Networking Services

The following table lists the servers that are placed within the London location, the subnets on which the servers are placed, and why the servers are placed on the respective subnet within your design

Place On Subnet(s) So that

DHCP H DHCP traffic travels across the minimum number of

network segments while protecting the server

DNS H DNS traffic travels across the minimum number of

network segments while protecting the server

WINS H DNS traffic travels across the minimum number of

network segments while protecting the server

Router H, I Packets are routed between the screened subnet and the

private network while protecting private network resources

The DHCP, DNS, and WINS servers were placed on Subnet H because Subnet H contains the majority of client computers at the London location

Specifying Networking Services Design Options

For each of the networking services servers that you place within the London location, you must specify the design options for the service

Slide Objective

To describe the decisions

involved in placing the

appropriate servers within

the London location

Lead-in

The London location is a

larger branch office

consisting of fewer

computers than New York;

therefore, it has different

networking services

requirements

Point out that all servers not

running networking services

and all client computers

have been removed from

the slide for clarity

purposes

Note

The following tables list the related design options by networking service, and the reason for specifying the options in your design

DHCP

Specify To

DHCP scope for Subnets H and I Provide automatic IP configuration for the

DHCP clients on Subnets H and I DHCP Relay Agent on Router 5 Enable the forwarding of DHCP packets

between Subnets H and I

DNS updates Register new DHCP clients with DNS

DNS

Specify To

Active Directory integrated zone Use the existing Active Directory

infrastructure, and to act as the repository for the DNS zone information

Dynamic updates from the DHCP server Authorize the DHCP server to perform

updates within the DNS zone

WINS

Specify To

Burst handling Respond to a large number of

simultaneous WINS registration requests.Replication with the New York server Ensure WINS resolution and registration

information with existing routers

IPSec tunnel Encrypt data between locations and to

authenticate the router

Providing Security

Identifying Potential Security Risks

Preventing Potential Security Risks

To secure the networking solution, you must identify the potential security risks and how to prevent those risks from occurring You identify the security risks based on the confidentiality of the data and the number of users that have access

to the data You prevent unauthorized access to confidential data by encrypting the data, and authenticating users or devices that transmit the data

To provide security for the investment firm solution, you must:

Identify the potential security risks for the confidential data

Identify the strategies for preventing the potential security risks at each location

Slide Objective

To describe the decisions to

secure the investment firm

solution

Lead-in

To secure the investment

firm solution, you need to

identify the potential security

risks and how to prevent

these risks from occurring

Identifying Potential Security Risks

Internet

New York

Router 4

London Tokyo

The following table lists the security risks and why the data is at risk

Data is at risk Because there is a possibility that

Within each location Brokers can access other brokers’ clients

Customers may connect to the network while in the branch office and access others’ accounts

Network administrative staff can access any of the firm’s accounts and records

Between locations Confidential data is transmitted between locations over

To describe how to identify

the potential security risks in

the investment firm solution

Lead-in

If your network transmits

confidential data on a

private network or over

public networks, the data

can be at risk

Preventing Potential Security Risks

Internet

New York

Router 4

London Tokyo

confidential data

Within Each Location

You can prevent the security risks within each location by:

Encrypting (by using IPSec) all confidential data transmitted within the private network

Authenticating all brokers by using Active Directory authentication

Authenticating all customers when they access the Web-based application while connecting to the network within each location

Requiring HyperText Transmission Protocol Secure (HTTPS) for all transactions on the Web-based application

Between Locations

You can prevent the security risks between locations by:

Requiring the routers that connect locations transmit all data through a VPN tunnel

Encrypting the data by using 56-bit Data Encryption Standard (DES), which

is the strongest level of encryption that can be exported outside the U.S and Canada

Authenticating the routers by using MS-CHAP v2 and IPSec

Slide Objective

To describe the decisions

involved in preventing the

security risks for the

investment firm solution

Lead-in

After identifying the security

risks, you need to decide

how to prevent the security

risks from occurring in any

location

Web-based Application

You can prevent the security risks for the Web-based application by:

Authenticating all customers when they access the Web-based application

Requiring HTTPS for all transactions on the Web-based application

Placing the Web-based application servers on screened subnets within the location

Remote Access by Brokers

You can prevent the security risks when the brokers remotely access the private network by:

Encrypting all confidential data transmitted within the private network by using VPN tunnels with Microsoft Point-to-Point Encryption (MPPE)

Authenticating all brokers by using Active Directory authentication

Enhancing the Availability and Performance

Identifying the Essential Networking Services

Enhancing the Availability and Performance at the New York Location

Enhancing the Availability and Performance at the Tokyo Location

Enhancing the Availability and Performance at the London Location

Within the design, certain networking services are essential to the continued operation of mission-critical applications When these networking services are unavailable or respond slowly, the applications that the services support will also experience outages and slow performance

You can enhance the availability and performance of the investment firm solution by:

Identifying the essential networking services that require improved availability and performance

Identifying strategies for enhancing the availability and performance of the networking services at the New York location

Identifying strategies for enhancing the availability and performance of the networking services at the Tokyo location

Identifying strategies for enhancing the availability and performance of the networking services at the London location

Slide Objective

To describe the decisions

for enhancing the availability

and performance of the

investment firm solution

Lead-in

Any mission-critical

application that is

dependent upon networking

services requires these

services to be highly

available and to prevent

outage

Identifying the Essential Networking Services

Internet

New York

Router 4

London Tokyo

Support for Web-based Trading

The following table lists the networking services that are required to support the Web-based trading applications in the investment firm

Web-based trading applications require To provide

DHCP Automatic IP configuration for brokers who connect through

VPN remote access

DNS Name resolution for servers that host the application

Proxy Server Private network isolation

Screened subnets to protect the servers that host the application

Routing and Remote Access

Private network isolation

VPN remote access for brokers

Routing between private network locations

Slide Objective

To describe how to identify

the essential networking

services in the investment

firm solution

Lead-in

You must identify the

essential networking

services so that you can

prevent availability and

performance problems with

these services

Support for Private Network-based Applications

The following table lists the networking services that are required to support the private network-based applications in the investment firm

Private network-based applications require To provide

DHCP Automatic IP configuration for users within the private

Private network isolation

VPN remote access for brokers

Routing between private network locations

Enhancing the Availability and Performance at the New York

Location

Router 1

Router 3 DHCP

Proxy Array

Subnet D

4 Hosts

WINS DNS

Router 2

Router 6

After you have identified the essential networking services for the solution, you must prevent outages and improve the performance of these services in the New York location In most instances, the same method that you implement will also improve the availability and performance of a networking service

In many instances, the existing networking service is sufficient for the number of users in the New York location However, the additional server has the added benefit of improving performance for the networking service

DHCP

Improve the availability of DHCP within the New York location by:

Specifying that the existing DHCP server belongs to a server cluster

Adding another server to the server cluster, to act as a backup in the event of

a server failure

Because only one instance of DHCP is running within the cluster, DHCP performance is not improved

Slide Objective

To describe the decisions

for improving the availability

and performance at the New

York location of the

investment firm solution

Lead-in

After you have identified the

essential networking

services for the solution, you

must prevent outages and

improve the performance of

these services

Point out that the two

clusters supporting DHCP

and WINS can be merged

into one cluster

Note

Note

WINS

Improve the availability of WINS within the New York location by:

Specifying that the existing WINS server belongs to a server cluster

Adding another server to the server cluster, to act as a backup in the event of

Placing an additional router between Subnets B and E

Specifying that the original router is the lowest cost path to the Tokyo location and the highest cost path to the London location

Specifying that the additional router is the lowest cost path to the London location and the highest cost path to the Tokyo location

Proxy Server

Improve the availability and performance of Proxy Server within the New York location by:

Specifying that the existing proxy server belongs to a proxy array

Adding another proxy server to the proxy array to act as a backup in the event of a server failure

Specifying that both proxy servers use Network Load Balancing to distribute traffic between the servers

VPN Remote Access Server

Improve the availability and performance of VPN remote access within the New York location by:

Adding another VPN remote access server on Subnet D

Specifying that both VPN remote access servers use Network Load Balancing to distribute traffic between the servers

Note

Enhancing the Availability and Performance at the Tokyo Location

In many instances, the existing networking service is sufficient for the number of users in the Tokyo location However, the additional server has the added benefit of improving performance for the networking service

DHCP

Improve the availability of DHCP within the Tokyo location by:

Specifying that the existing DHCP server belongs to a server cluster

Adding another server to the server cluster, to act as a backup in the event of

a server failure

Because only one instance of DHCP is running within the cluster, DHCP performance is not improved

Slide Objective

To describe the decisions

for improving the availability

and performance at the

Tokyo location of the

investment firm solution

Lead-in

Within the Tokyo location,

all of the networking

services directly affect the

availability and performance

of applications within the

organization

Point out that the two

clusters supporting DHCP

and WINS could be merged

into one cluster

Note

Note

DNS

Improve the availability and performance of DNS within the Tokyo location by:

Placing an additional DNS server with an Active Directory integrated zone

on Subnet G

Specifying that the clients on Subnet F use the original DNS server, and the clients on Subnet G use the additional DNS server, to distribute DNS queries between the two DNS servers

WINS

Improve the availability of WINS within the Tokyo location by:

Specifying that the existing WINS server belongs to a server cluster

Adding another server to the server cluster, to act as a backup in the event of

Placing an additional router between Subnet F, Subnet G, and the Internet

Specifying that the original router is the lowest cost path to the New York location and the highest cost path to the London location

Specifying that the additional router is the lowest cost path to the London location and the highest cost path to the New York location

Note

Enhancing the Availability and Performance at the London Location

WINS

After you improve the availability and performance at the New York and Tokyo locations, you must prevent outages and improve the performance of the networking services in the London location In most instances, the same method that you implement will improve the availability and performance of a

networking service

In many instances, the existing networking service is sufficient for the number of users in the London location However, the additional server has the added benefit of improving performance for the networking service

DHCP

Improve the availability of DHCP within the London location by:

Specifying that the existing DHCP server belongs to a server cluster

Adding another server to the server cluster, to act as a backup in the event of

a server failure

Because only one instance of DHCP is running within the cluster, DHCP performance is not improved

Slide Objective

To describe the decisions

for improving the availability

and performance at the

London location of the

investment firm solution

Lead-in

After you improve the

availability and performance

at the New York and Tokyo

locations, you must prevent

outages and improve the

and WINS could be merged

into one cluster

Note

Note

WINS

Improve the availability of WINS within the London location by:

Specifying that the existing WINS server belongs to a server cluster

Adding another server to the server cluster to act as a backup in the event of

Placing an additional router between Subnet H, Subnet I, and the Internet

Specifying that the original router is the lowest cost path to the New York location and the highest cost path to the Tokyo location

Specifying that the additional router is the lowest cost path to the Tokyo location and the highest cost path to the New York location

Note

Lab A: Creating Networking Solutions

Objectives

After completing this lab, you will be able to:

Evaluate an existing scenario to design a networking services solution

Design a networking services solution for the given scenarios

Prerequisites

Before working on this lab, you must have:

Knowledge of the design decisions required to create a networking services design

Knowledge of strategies to enhance the security, availability, and performance of a networking services solution

Estimated time to complete this lab: 2 hours

Slide Objective

To introduce the lab

Lead-in

In this lab, you will design a

networking services solution

for a variety of

organizational scenarios

Exercise 1

Designing an Insurance Firm Solution

In this exercise, you are presented with the task of designing a networking services solution for an insurance firm This insurance firm has a central office, six regional offices, and two types of insurance agent offices Your instructor will assign you to design the central office, the regional office, or the insurance agent offices You will work in teams to design a solution that supports the organization’s requirements

You will design your solution for the assigned location by using a white board, flip chart, or other presentation medium Review the scenario, the design requirements, and the diagram for your assigned location Follow the Instructions to complete the exercise At the end of the exercise, be prepared to provide a justification for your design decisions and to provide feedback to the other teams

Scenario

An insurance firm is evaluating their existing network in preparation for the deployment of Windows 2000 As a consultant to the firm, you have been assigned the task of evaluating and redesigning the current network

The insurance firm has a central office that handles billing and accounting for the firm In addition, the firm has six regional offices that support the insurance agents within each region

The insurance agent offices are independently owned and operated The agent offices consist of an individual agent or a group of agents working at a single location

This is the existing network at the insurance agent offices that consist of multiple

insurance agents The network configuration of all these offices is identical

This is the existing network at the insurance agent offices that consist of a single

insurance agent The network configuration of all these offices is identical