Module 9: Installing and Configuring Network Load Balancing Contents Overview Pre-Installation Network Load Balancing Driver Installation Configuring the Network Load Balancing Driver Cluster Parameters Host Parameters 13 Port Rules 15 TCP/IP Properties 23 Post-Installation Configuration 25 Lab A: Installing and Configuring the Network Load Balancing Driver 27 Review 44 Information in this document is subject to change without notice The names of companies, products, people, characters, and/or data mentioned herein are fictitious and are in no way intended to represent any real individual, company, product, or event, unless otherwise noted Complying with all applicable copyright laws is the responsibility of the user No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of Microsoft Corporation If, however, your only means of access is electronic, permission to print one 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Stewart Module 9: Installing and Configuring Network Load Balancing iii Instructor Notes Presentation: 60 Minutes This module provides students with the knowledge and skills to install and configure a Network Load Balancing cluster Lab: 15 Minutes After completing this module, students will be able to: Describe the pre-installation decisions for a clustering solution Install the Network Load Balancing driver Configure the Network Load Balancing driver Select the appropriate settings on the Cluster Parameters tab Select the appropriate settings on the Host Parameters tab Select the appropriate port rules for the cluster Determine the proper setting for the Transmission Control Protocol/Internet Protocol (TCP/IP) stack Determine the post-installation configuration for the cluster Materials and Preparation This section provides the materials and preparation tasks that you need to teach this module Required Materials To teach this module, you need the Microsoft® PowerPoint® file 2087a_09.ppt Preparation Tasks To prepare for this module, you should: Read all of the materials for this module Complete Lab A: Installing and Configuring the Network Load Balancing Driver Study the review questions and prepare alternative answers to discuss Anticipate questions that students may ask Write out the questions and provide the answers iv Module 9: Installing and Configuring Network Load Balancing Module Strategy Use the following strategy to present this module: Pre-Installation Emphasize the importance of preparing for the cluster installation by reviewing the pre-installation checklist with the students Review the hardware considerations, especially the network adapters Explain and discuss switch flooding and the possible solutions Network Load Balancing Driver Installation Demonstrate the installation of the Network Load Balancing driver by using the user interface Configuring the Network Load Balancing Driver Demonstrate configuration of the Network Load Balancing driver by means of the Network Load Balancing Properties dialog box Cluster Parameters Demonstrate the configuration settings for the Cluster Parameter tab by means of the user interface Type in examples of a Primary IP address and a full Internet name Explain the security issues with managing a Network Load Balancing cluster from a remote location Discuss the differences between unicast and multicast and identify the advantages of each mode Host Parameters Demonstrate the configuration settings for the Host Parameter tab Explain all of the dialog box settings Port Rules Demonstrate the configuration settings for the Port Rules tab by means of the user interface Discuss the importance of maintaining consistent port rules across all of the cluster hosts Demonstrate how to configure the filtering modes for the Network Load Balancing driver by means of the user interface Explain all of the dialog box settings Demonstrate the configuration settings for the Affinity tab by means of the user interface Explain all of the dialog box settings Demonstrate the configuration settings for the Load Weighting and Priority tab Explain all of the dialog box settings TCP/IP Properties Demonstrate the configuration settings for the General tab of the Internet Protocol (TCP/IP) Properties dialog box by means of the user interface Post-Installation Configuration Review with the students the proper handling of the registry changes Module 9: Installing and Configuring Network Load Balancing v Lab Setup There are lab setup requirements; the student computer should not have server cluster installed Server cluster was uninstalled in the lab associated with Course 2087A, Module 7, Lab A: Cluster Maintenance, Exercise 2: Removing the Cluster Service The following list describes the setup requirements for Lab A: Installing and Configuring the Network Load Balancing Driver Required minimum of one network adapter on the student computer Static Internet Protocol addresses are allocated to the adapter Default.asp pages must be added to the default site of each individual student’s Web server Instructors Notes Exercise Network adapters will have been renamed if students completed Course 2087A, Module 3, Lab A: Configuring Advanced Server for Cluster Installation, Exercise 2: Set Up Public and Private Networks for Cluster Installation You can continue to use these names (Cluster Private, Cluster Public) or rename them to Local Area Connection providing that you advise the students which names to use Ensure that the students select a network adapter that provides connectivity with all of the student’s computers in the classroom If you have multiple network adapters in the student computer, the students can be confused as to which one to select Exercise In this exercise students will examine the current configuration of their network adapters The IP addresses resolved during this exercise will have been allocated during previous exercises If your configuration constrains the IP addresses in your classroom, you need to advise the students of the IP addresses that they must use Module 9: Installing and Configuring Network Load Balancing Overview Topic Objective To provide an overview of the module topics and objectives Lead-in In this module, you will learn about installing and configuring the Network Load Balancing driver Pre-Installation Network Load Balancing Driver Installation Configuring the Network Load Balancing Driver Cluster Parameters Host Parameters Port Rules TCP/IP Properties Post-Installation Configuration *****************************ILLEGAL FOR NON-TRAINER USE****************************** In this module, you will install and configure the Network Load Balancing driver You will learn how to configure the driver by selecting the appropriate settings for the Network Load Balancing and TCP/IP Properties dialog boxes Before you install the Network Load Balancing driver, you will complete a preinstallation checklist that will determine if your network capacity and configuration can meet your needs, you have configured the hosts correctly, and the addressing architecture is appropriate for the cluster This module will also address issues with post-installation configuration, including how to avoid flooding switch ports and how to adjust convergence parameters After completing this module, you will be able to: Describe the pre-installation decisions for a clustering solution Install the Network Load Balancing driver Configure the Network Load Balancing driver Select the appropriate settings on the Cluster Parameters tab Select the appropriate settings on the Host Parameters tab Select the appropriate port rules for the cluster Determine the proper setting for the Transmission Control Protocol/Internet Protocol (TCP/IP) stack Determine the post-installation configuration for the cluster Module 9: Installing and Configuring Network Load Balancing Pre-Installation Topic Objective Describe the pre-installation decisions for a clustering solution Verify that TCP/IP is bound to the network card Lead-in Verify that aggregate subnet throughput supports IP traffic In designing a Network Load Balancing solution, you will collect all of the relevant information that is required to configure your cluster, but initially there are some common considerations that you must address for all of the cluster solutions Verify that the throughput of each host is documented Verify that cluster members support client throughput Verify that all IP addresses are manually allocated *****************************ILLEGAL FOR NON-TRAINER USE****************************** In designing a Network Load Balancing solution, you will collect all of the relevant information that is required to configure your cluster, but initially there are some common considerations that you must address for all of the cluster solutions Prior to installing the first cluster host, complete the following tasks: Ensure that only TCP/IP is bound to the network card that you will use as the cluster adapter The Network Load Balancing driver intercepts and supports all IP packets that the hardware driver of the cluster adapter forwards The Network Load Balancing driver only supports IP packets If other protocols, such as Internetwork Packet Exchange (IPX), must be supported, verify that you have installed multiple network interface cards (NIC) in the computer Ensure that the aggregate throughput of the subnet will support both cluster IP and dedicated IP traffic for the required number of hosts If the subnet utilization is a concern, you can install multiple network cards or use round robin DNS entries to allow for a reduction in the number of hosts per cluster Ensure that you have documented the throughput of each host If you have configured all of the cluster members identically, the throughput will be similar For example, if all of your hosts have the same number of CPUs, clock speed, and network cards, their throughput rate will be very similar If your computers have different clock speeds or number of CPUs, then the throughput rate of each will vary If you use computers with different throughput rates, you can use the manual load balance feature of Network Load Balancing to distribute clients across cluster members Module 9: Installing and Configuring Network Load Balancing If you are going to use Network Load Balancing in a failover mode of operation, ensure that all of the members of the cluster can support the required client throughput You may deliberately design your system to have performance degrade during failover; for example, if your default host is a quad CPU computer, you can assign a dual CPU computer with lesser throughput as the next priority (failover) computer, accepting that the performance will degrade until the original default computer is repaired and brought back online Ensure that all of the IP addresses that you will use for the Network Load Balancing cluster are manually allocated The Network Load Balancing driver is not a Dynamic Host Configuration Protocol (DHCP) client and cannot use DHCP-allocated addresses If the address range that you use is within a corporate DHCP group, ensure that the Cluster IP addresses are excluded from any defined ranges Module 9: Installing and Configuring Network Load Balancing Hardware Considerations Topic Objective To identify the hardware considerations for Network Load Balancing Lead-in The Network Load Balancing driver runs within the cluster hosts as part of the Windows 2000 Advanced Server operating system; it does not require dedicated hardware support No special hardware requirements Ethernet or FDDI All hosts on one broadcast subnet All host on one Level switch or VLAN All hosts on a single hub or repeater Two NICs per host preferred: One NIC for cluster traffic and heartbeats One NIC for replications/backend access *****************************ILLEGAL FOR NON-TRAINER USE****************************** The Network Load Balancing driver runs within the cluster hosts as part of the Microsoft® Windows® 2000 Advanced Server operating system; it does not require dedicated hardware support The current version of the Network Load Balancing driver operates on Fiber Distributed Data Interface (FDDI) or Ethernet-based local area networks (LAN) within the cluster All cluster members should be on the same broadcast subnet, in the same virtual LAN, or on a single hub While the Network Load Balancing driver will work successfully by using one NIC, two NICs are preferred Using two NICs will enable the cluster IP and heartbeat traffic to operate on one NIC and IP traffic for an individual host to operate on the second NIC; for example, when you use two NICs, traffic associated with replication services and backend access to a database is separated from the cluster inbound traffic If your Network Load Balancing solution will include multiple NICs, it is recommended that the cluster IP and dedicated IP be on different subnets to maximize the throughput available to cluster IP traffic Using different subnets increases security by providing isolation between public and private traffic If all of the NICs are connected to the same subnet, it can create throughput and security limitations in the network The network adapters that you use must support dynamic allocation of the media access control (MAC) address and multicast MAC address requirements Both multicast and unicast modes of operation will result in the Network Load Balancing driver programming new MAC addresses into the card 32 Module 9: Installing and Configuring Network Load Balancing Exercise Accessing a Student Partner Web Page You will work with a partner to complete this procedure You will use Internet Explorer to access a Web page on your partner’s computer To access your partner’s Web page On the desktop, double-click Internet Explorer Ask your partner for the IP address of their computer In the Address dialog box enter the IP address of your partner’s computer A web page with text indicating your partner’s number should appear in Microsoft Internet Explorer Close Internet Explorer Module 9: Installing and Configuring Network Load Balancing 33 Exercise Installing and Configuring the Network Load Balancing Driver In this exercise, you will: Use the Planning Worksheet that is provided to configure the Network Load Balancing driver by entering the required information in the wizard Update the TCP/IP properties to include the required Network Load Balancing addresses Reconfigure the Web site to use the cluster address Test the Web site and record information on the operation of the cluster All students will complete this procedure and not need to work with a partner You will install Network Load Balancing and reconfigure your Web site to use the cluster virtual IP address To install and configure the Network Load Balancing driver Right click My Network Places and then click Properties Double-click on the network adapter that you will use to install Network Load Balancing Click Properties in the Local Area Connection status dialog box In the Local Area Connection Properties dialog box, select the Network Load Balancing driver check box Note If Network Load Balancing is not shown in the list, click Install, select Service and then select Network Load Balancing to add to the list Click Properties to open the Network Load Balancing Properties dialog box Using the supplied Planning Worksheet for Exercise 4, enter the information in the Cluster Parameters, Host Parameters and Port Rules properties dialog boxes When all of the information is entered, click OK in the Network Load Balancing Properties dialog box In the Local Area Connection Properties dialog box select Internet Protocol (TCP/IP), and then click Properties In the Internet Protocol (TCP/IP) Properties dialog box, ensure that the dedicated IP address and subnet mask of the cluster is entered in the Use the following IP address dialog boxes from the reference sheet at the end of this exercise 34 Module 9: Installing and Configuring Network Load Balancing 10 Click Advanced, and in the Advanced TCP/IP Settings page, add the cluster IP address and subnet mask to the IP Addresses list Note If you receive a dialog box advising that WINS is not configured, click Yes to continue 11 Click OK in the Local Area Connection Properties dialog box to activate the Network Load Balancing driver 12 Close the Local Area Connection status dialog box To check that the Network Load Balancing driver is functional Click Start, point to Programs, point to Administrative Tools, and then click Event Viewer to start the Event Viewer Microsoft Management Console (MMC) Examine the System Log and look for events from a source of Windows Load Balancing Service (WLBS) Record the event ID’s, and examine the events to discover if there is an indication that your cluster is working correctly Note If you have Error events for Wlbs in your System Log, advise your instructor When your partner is at the same point in the procedures, ask your partner for the cluster and dedicated IP Address for their Network Load Balancing network adapter Information to Collect Collected Information a Cluster IP Address for Partner b Dedicated IP Address for Partner Click Start, click Run, and then type cmd in the Run dialog box Click OK to open a command window At the command prompt, type Ping partner Cluster IP address and then press ENTER At the command prompt, type Ping partner Dedicated IP address and then press ENTER At the command prompt, type Arp –a Module 9: Installing and Configuring Network Load Balancing 35 10 Record the Physical Address associated with the Cluster IP and Dedicated IP Address of your partner Information to Collect Collected Information a Physical Address for Partner Cluster IP b Physical Address for Partner Dedicated IP 11 Close all of the command windows Note If the cluster is configured for Unicast, both addresses will be the same; if it is configured for Multicast, the addresses will be different To configure the Default Web site to use the cluster IP address Click Start, point to Programs, point to Administrative Tools, and then click Internet Services Manager In the Internet Information Services console, expand the local host icon, right-click Default Web Site, and then select Properties In the Default Web Site Properties dialog box, select the Web Site tab and in the IP address dialog drop-down list, select the cluster virtual IP address By default the IP address will be set to (All Unassigned) Click OK to close the Default Web Site Properties dialog box Close Internet Services Manger console To test that the Web site is using the correct IP address Use Internet Explorer to access both the cluster IP address and the dedicated IP address of your local computer Document the result in the following area: a Accessing the cluster IP address (a page should display correctly) b Accessing the dedicated IP address (an HTTP 404 error should occur) Use Internet Explorer to access both the virtual IP address and the dedicated IP address of your partner’s computer Document the results in the following area: a Accessing the cluster IP address (a page should display correctly) b Accessing the dedicated IP address (an error indicating no site at this address should occur) 36 Module 9: Installing and Configuring Network Load Balancing Reference Table for Exercise Student ID Server Name Cluster URL Cluster IP Dedicated IP Vancouver www.student1.com 192.168.x.50 192.168.x.101 Denver www.student2.com 192.168.x.51 192.168.x.102 Acapulco www.student3.com 192.168.x.52 192.168.x.103 Miami www.student4.com 192.168.x.53 192.168.x.104 Lisbon www.student5.com 192.168.x.54 192.168.x.105 Bonn www.student6.com 192.168.x.55 192.168.x.106 Stockholm www.student7.com 192.168.x.56 192.168.x.107 Moscow www.student8.com 192.168.x.57 192.168.x.108 Bangalore www.student9.com 192.168.x.58 192.168.x.109 10 Singapore www.student10.com 192.168.x.59 192.168.x.110 11 Manila www.student11.com 192.168.x.60 192.168.x.111 12 Tokyo www.student12.com 192.168.x.61 192.168.x.112 13 Perth www.student13.com 192.168.x.62 192.168.x.113 14 Brisbane www.student14.com 192.168.x.63 192.168.x.114 15 Auckland www.student15.com 192.168.x.64 192.168.x.115 16 Suva www.student16.com 192.168.x.65 192.168.x.116 17 Lima www.student17.com 192.168.x.66 192.168.x.117 18 Santiago www.student18.com 192.168.x.67 192.168.x.118 19 Caracas www.student19.com 192.168.x.68 192.168.x.119 20 Montevideo www.student20.com 192.168.x.69 192.168.x.120 21 Casablanca www.student21.com 192.168.x.70 192.168.x.121 22 Tunis www.student22.com 192.168.x.71 192.168.x.122 23 Khartoum www.student23.com 192.168.x.72 192.168.x.123 24 Nairobi www.student24.com 192.168.x.73 192.168.x.124 Module 9: Installing and Configuring Network Load Balancing 37 Exercise Configuring a Multihost Network Load Balancing Cluster All students complete this procedure with a partner You will reconfigure the Network Load Balancing driver to create a two-host cluster and reconfigure your Web site to use the cluster IP address Students will complete the procedure on the lowest number student ID computer first, and then complete the process on the other student computer To reconfigure a student host to be the first member of the multihost cluster Double-click the network adapter that is used for Network Load Balancing Click Properties in the Local Area Connection status dialog box In the Local Area Connection Properties dialog box, select Network Load Balancing Click Properties to open the Network Load Balancing Properties dialog box Using the supplied Planning Worksheet, enter the information in the Cluster Parameters, Host Parameters and Port Rules properties dialog boxes Ensure that the Initial cluster state is selected on the Host Parameters dialog box When all of the information is entered, click OK in the Network Load Balancing Properties dialog box In the Local Area Connection Properties dialog box, select Internet Protocol (TCP/IP), and then click Properties In the Internet Protocol (TCP/IP) Properties dialog box, ensure that the dedicated IP address and subnet mask of the cluster is entered in the Use the following IP Address dialog boxes 10 Click Advanced, and in the Advanced TCP/IP Settings dialog box, add the cluster IP address and subnet mask to the IP Addresses list 11 Click OK in the Local Area Connection Properties dialog box to activate the Network Load Balancing driver 12 Close the Local Area Connection status dialog box 13 Click Start, point to Programs, point to Administrative Tools, and then click Event Viewer to start the Event Viewer MMC 14 Examine the System Log and look for events from a source of WLBS 15 Record the event ID’s, and examine the events to determine that your cluster is working correctly Note If you have Error events for Wlbs in your System Log, advise your instructor \ 38 Module 9: Installing and Configuring Network Load Balancing To verify that the Network Load Balancing driver is functional Note Complete this procedure on the higher number student ID computer Use the cluster and dedicated IP Address for the Network Load Balancing network adapter on the lower number student ID Information to Collect Collected Information a Cluster IP Address b Dedicated IP Address Click Start, click Run, and then type cmd in the Run dialog box Click OK to open a command window At the command prompt, type Ping partner Cluster IP address and then press ENTER At the command prompt, type Ping partner Dedicated IP address and then press ENTER At the command prompt, type Arp -a Record the Physical Address associated with the Cluster IP and Dedicated IP Address of the lower number student ID computer Information to Collect Collected Information a Physical Address Cluster IP _ b Physical Address Dedicated IP _ Compare the MAC addresses recorded previously with the results obtained in Exercise and explain the differences The MAC address associated with the cluster virtual IP is shown as 03-bf-xx-xx-xx-xx because it is now a multicast MAC address The dedicated IP address is the MAC address of the card (the hard-wired address) Close all of the command windows Module 9: Installing and Configuring Network Load Balancing 39 To configure the default Web site to use the cluster IP address Note Complete this procedure on the lower number student ID computer Click Start, point to Programs, point to Administrative Tools, and then click Internet Services Manager In the Internet Information Services console expand the local host icon, and right-click the Default Web Site, and then select Properties In the Default Web Site Properties dialog box, select the Web Site tab and in the IP Address drop-down list, select the cluster virtual IP address The IP address will be set to the value that was used in Exercise 4 Click OK to close the Default Web Site Properties dialog box Close the Internet Service Manager console To test that the Web site is using the correct IP address Note Complete this procedure from the higher numbered student ID computer • Use Internet Explorer to access both the virtual IP address and the dedicated IP address of the lower number student ID computer local computer Document the results in the following area: a Accessing the virtual IP address (a page should display correctly) b Accessing the dedicated IP address (an HTTP 404 error should occur) To reconfigure the second student computer to be a member of the cluster Students will complete the following procedure on the higher number student ID computer Double-click the network adapter that is used for Network Load Balancing Click Properties in the Local Area Connection status dialog box In the Local Area Connection Properties dialog box, select Network Load Balancing Click Properties to open the Network Load Balancing Properties dialog box Using the supplied Planning Worksheet, enter the information in the Cluster Parameters, Host Parameters, and Port Rules properties dialog boxes Ensure that the Initial cluster state is selected in the Host Parameters dialog box When all of the information is entered, click OK in the Network Load Balancing Properties dialog box In the Local Area Connection Properties dialog box, select Internet Protocol (TCP/IP), and then click Properties In the Internet Protocol (TCP/IP) Properties dialog box, ensure that the dedicated IP address and subnet mask of the cluster is entered in the Use the following IP Address dialog boxes 40 Module 9: Installing and Configuring Network Load Balancing 10 Click Advanced, and in the Advanced TCP/IP Settings dialog box, add the cluster IP address and subnet mask to the IP Addresses list 11 Click OK in the Local Area Connection Properties dialog box to activate the Network Load Balancing driver 12 Close the Local Area Connection status dialog box 13 Click Start, point to Programs, point to Administrative Tools, and then click Event Viewer to start the Event Viewer MMC 14 Examine the System Log and look for events from a source of WLBS 15 Record the event ID’s, and examine the events to discover if there is an indication that your cluster is working correctly Note If you have Error events for Wlbs in your System log, advise your instructor To verify that the Network Load Balancing driver is functional Note Complete this procedure on the lower number student ID computer Use the Cluster and Dedicated IP Address for the Network Load Balancing network adapter on the higher number student ID Information to Collect Collected Information a Cluster IP Address b Dedicated IP Address Click Start, click Run, and then type cmd in the Run dialog box Click OK to open a command window At the command prompt, type Ping partner Cluster IP address and then press ENTER At the command prompt, type Ping partner Dedicated IP address and then press ENTER Was the Ping command to the addresses successful? At the command prompt, type Arp –a Module 9: Installing and Configuring Network Load Balancing 41 Record the Physical Address associated with the Cluster IP and Dedicated IP address of the higher number student ID computer Information to Collect Collected Information a Physical Address Cluster IP b Physical Address Dedicated IP Compare the MAC addresses that were recorded previously with the results that were obtained in Exercise and explain the differences The MAC address of the cluster IP is not shown in the Arp -a listing because the IP address is also the local computer IP address; so the ping did not result in traffic on the network Only the dedicated IP of the high number student computer is shown Close all of the command windows To configure the default Web site to use the cluster IP address Note Complete this procedure on the higher number student ID computer Click Start, point to Programs, point to Administrative Tools, and then click Internet Service Manager In the Internet Information Services console expand the local host icon, and right-click the Default Web Site, and then select Properties In the Default Web Site Properties dialog box, select the Web Site tab and in the IP Address drop-down list, select the cluster virtual IP address The IP address will be set to the value used in Exercise 4 Click OK to close the Default Web Site Properties dialog box Close the Internet Service Manager console 42 Module 9: Installing and Configuring Network Load Balancing To test that the Web site is using the correct IP address Note Complete this procedure from both the lower and higher numbered student ID computers • Use Internet Explorer to access both the virtual IP address and the dedicated IP address of the local computer of the lower number student ID computer Document the results in the following area: a Accessing the virtual IP address (a page should display correctly) b Accessing the dedicated IP address (an HTTP 404 error should occur) Explain the different results obtained from the lower and higher numbered student computers Both students access the Web site by using the virtual IP address, because this is the local IP address for the computer, the HTTP request is not sent on the network and is fulfilled by the local computer Module 9: Installing and Configuring Network Load Balancing 43 Reference Table for Exercise Student ID Server Name Cluster URL Cluster IP Dedicated IP Vancouver www.Group1.com 192.168.x.50 192.168.x.101 Denver www.Group1.com 192.168.x.50 192.168.x.102 Acapulco www.Group2.com 192.168.x.52 192.168.x.103 Miami www.Group2.com 192.168.x.52 192.168.x.104 Lisbon www.Group3.com 192.168.x.54 192.168.x.105 Bonn www.Group3.com 192.168.x.54 192.168.x.106 Stockholm www.Group4.com 192.168.x.56 192.168.x.107 Moscow www.Group4.com 192.168.x.56 192.168.x.108 Bangalore www.Group5.com 192.168.x.58 192.168.x.109 10 Singapore www.Group5.com 192.168.x.58 192.168.x.110 11 Manila www.Group6.com 192.168.x.60 192.168.x.111 12 Tokyo www.Group6.com 192.168.x.60 192.168.x.112 13 Perth www.Group7.com 192.168.x.62 192.168.x.113 14 Brisbane www.Group7.com 192.168.x.62 192.168.x.114 15 Auckland www.Group8.com 192.168.x.64 192.168.x.115 16 Suva www.Group8.com 192.168.x.64 192.168.x.116 17 Lima www.Group9.com 192.168.x.66 192.168.x.117 18 Santiago www.Group9.com 192.168.x.66 192.168.x.118 19 Caracas www.Group10.com 192.168.x.68 192.168.x.119 20 Montevideo www.Group10.com 192.168.x.68 192.168.x.120 21 Casablanca www.Group11.com 192.168.x.70 192.168.x.121 22 Tunis www.Group11.com 192.168.x.70 192.168.x.122 23 Khartoum www.Group12.com 192.168.x.72 192.168.x.123 24 Nairobi www.Group12.com 192.168.x.72 192.168.x.124 Note The x used in the IP addresses is either the classroom number or a value assigned by the Instructor Ensure that you use the correct value to prevent potential disruption of other classes 44 Module 9: Installing and Configuring Network Load Balancing Review Slide Objective To reinforce module objectives by reviewing key points Pre-Installation Lead-in Network Load Balancing Driver Installation The review questions cover some of the key concepts taught in the module Configuring the Network Load Balancing Driver Cluster Parameters Port Rules TCP/IP Properties Post-Installation Configuration *****************************ILLEGAL FOR NON-TRAINER USE****************************** What are some network and bandwidth considerations that you must address when planning a Network Load Balancing solution? Ensure that only TCP/IP is bound to the network card that you will use as the cluster adapter Ensure that the aggregate throughput of the subnet will support both cluster IP and dedicated IP traffic for the required number of hosts Ensure that the throughput of each host is documented Ensure that all of the members of the cluster can support the required client throughput, if you are going to use Network Load Balancing in a failover mode of operation Ensure that all of the IP addresses that you will use for the Network Load Balancing cluster are manually allocated How can you avoid switch flooding problems in a Network Load Balancing cluster? You can avoid switch flooding problems by: ● Separating the inbound and outbound traffic ● Setting the interface metric ● Using a hub connect to a single switch port Module 9: Installing and Configuring Network Load Balancing 45 You are fault finding an eight-host Network Load Balancing cluster with four host members configured in multicast mode and four host members configured in unicast mode Why you think the cluster is not functioning properly? The Network Load Balancing service does not support a mixed unicast and multicast environment All cluster hosts should be either multicast or unicast; otherwise, the cluster will not function properly What considerations must be made prior to configuring port rules on multiple members of a Network Load Balancing cluster? For every rule that you configure, you will select the applicable port range and protocols The rules that are entered on each host in the cluster must have matching filtering modes, affinity and load weight, and priority The number and type of rules must exactly match for each host in the cluster Which of the following Network Load Balancing driver configurations would you choose to control how multiple connections from a single client will be distributed in a Network Load Balancing cluster? • Load Weighting and Priority • Affinity Mode • Filtering Mode Wrong answer – When using the Multiple Hosts filtering mode, you use Load Weighting and Priority to decide how the Network Load Balancing cluster will handle the inbound client connection requests Correct answer – You use Affinity to control how multiple connections from a single client will be distributed in a Network Load Balancing cluster Wrong answer – You use the Filtering Mode to determine how the cluster hosts handle a port’s inbound network traffic to the virtual IP address THIS PAGE INTENTIONALLY LEFT BLANK ... registry and will be enabled 8 Module 9: Installing and Configuring Network Load Balancing Configuring the Network Load Balancing Driver Topic Objective To provide an overview of the Network Load Balancing. .. load balance feature of Network Load Balancing to distribute clients across cluster members Module 9: Installing and Configuring Network Load Balancing If you are going to use Network Load Balancing. .. AliveMsgTolerance and AliveMsgPeriod that are based on your failover requirements Module 9: Installing and Configuring Network Load Balancing 27 Lab A: Installing and Configuring the Network Load Balancing