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HP SuperStack 3 Load Balancer Appliance User's Manual

1. Search Favoies Histo Mal Size Discuss lealcom Messenger Address nip 710 20 30 116indexhim v amp er SUPER Fi 3com SER STACK Sons Devceview E System a SLB 5 hours 8 minutes 56 seconds Device Summary primary 3C16121 2 3 3 50 012 ET Applet stated Internet istos SigHilask Capture Klinton Microsof Tweb y Exploing SLB Kldobe Exploring ICom KWEDOQO sor The summary information is displayed in a two tables m System Summary The first table is entitled System Summary and displays the System Name Location Contact and Up Time m Device Summary The second table is entitled Device Summary and displays the hardware type software version and serial number for the Server Load Balancer Device View gt Using the Web Interface 33 The Device View contains a mimic of the Server Load Balancer The device mimic is an interactive representation of the Server Load Balancer It is periodically updated to reflect changes particularly changes made to the status of its ports This view is used to configure fundamental system and port operating parameters To configure server load balancing cache redirection and other features use the Logical View While the Device View allows you to configure using the graphical user interface there are some features that can o
2. The Server Load Balancer provides two levels of access admin and monitor The password field contains blank default login passwords The two levels of access are admin the user can access and change all manageable parameters monitor the user can view all manageable parameters but cannot change any parameters 4 Atthe password prompt hit Return The password field contains a blank default login password The Welcome to the SLB Setup CLI appears N CAUTION The Server Load Balancer does not provide a way to recover a lost password If you choose to assign a new password it is suggested you keep note of it in a safe place If you forget your password you will be locked out of the unit If you change the password during the CLI Server Load Balancer setup this is the password you should use and not the blank default login password For Technical Support see Appendix C Welcome to the SLB Setup Follow the on screen instructions to complete the setup process You may run setup later by typing setup at the SEC prompt Setup will take you through the following steps SEC Set unit ip address Set default route Set clock Set login password You may use CR to skip a step Enter unit ip in this format nnn nnn nnn nnn pp where nnn nnn nnn nnn is IP address pp is address prefix 26 CHAPTER 3 SETTING UP FOR MANAGEMENT 5 You are prompted to enter the following information a
3. Click Next The Cache Subnet Configure Address page appears Enter 192 168 3 200 in the Device A IP Address field Enter 192 168 3 100 in the Device B IP Adaress field Enter 255 255 255 0 in the Subnet Mask field Click Next The Cache Subnet Device A Floating Address page appears Complete the entry in the Device A Floating Address field This is the floating default gateway IP address For example 192 168 3 150 Do not forget to change the default gateway on your caches to this IP address Click Next Click Finish Your cache subnet has been added Adding a Cache 57 Adding a Cache This is where the cache service is defined along with several attributes of the service Click Logical View on the Toolbar 2 Point to the Cache window border and left click the mouse button 3 In the pop up list click Add The Configure Cache page appears If you have not defined a cache subnet you will be prompted with a Warning message asking if you wish to define the cache subnet now See Defining a Cache Subnet on page 58 Complete the entry in the IP Address field For example 192 168 3 1 5 Enter Cache1 in the Name field Select the cache type and click Add There are two available cache types m Transparent m Proxy Click Done Assigning Caches to Services gt The Assign Caches to Services page is where the caches are assigned to cache redirection The Cache Assignments button is highlighted
4. Each Server Load Balancer has a set of internal Web pages that allow you to manage the Server Load Balancer using a Web browser Using the Web interface is the preferred method of management Command line interface management The Server Load Balancer offers limited command line interface CLI commands to configure basic parameters such as the management IP Address m SNMP management You can manage a Server Load Balancer using any Network Manager running the Simple Network Management Protocol SNMP such as 3Com Network Supervisor software SNMP management is limited and does not allow for full configuration functionality Assigning an IP Address To manage a Server Load Balancer over the network the Server Load Balancer must be initially configured with the following m An IP address and subnet mask m A default route The CLI provides a series of online instructions that you need to complete the setup process To assign an IP address to the Server Load Balancer complete the following steps Connect your management station to the console port on the front the Server Load Balancer See Console Port Cable on page 84 On a Windows PC you may use the Hyperterminal program or other terminal emulator The correct settings are Bits per second 9600 Data bits 8 Parity None a Stop bits 1 Flow control Hardware Assigning an IP Address 25 3 Hit Return At the login prompt enter admin
5. If you choose to assign a new password it is suggested you keep note of it in a safe place If you forget your password you will be locked out of the unit If you change the password during the CLI Server Load Balancer setup this is the password you should use and not the blank default login password For Technical Support information see Appendix C Click Finish The parameters you have entered are ready to be applied You are now ready to configure the load balancing services See Chapter 8 Configuring for Load Balancing CONFIGURING REDUNDANT SERVER LOAD BALANCING In this chapter a typical redundant server load balancing scenario is presented with instructions for configuring the Server Load Balancer The information presented in this chapter is for example purposes only and actual addresses will vary The following is a list of steps for the scenario presented for configuring redundant server load balancing These steps explained in detail in this chapter are m Configuring for Active Passive Redundancy wm Configuring for Active Active Redundancy m Active Active Device Allocation m Setting Redundancy Settings Before you complete the steps explained in this chapter you must have completed the preliminary setup described in Chapter 3 Setting Up for Management 46 CHAPTER 6 CONFIGURING REDUNDANT SERVER LOAD BALANCING Redundant Server Figure 12 shows how two Server Load Balancers and three servers form a Load Bala
6. weight The weight assigned to the server is assigned using the Assign caches to services Advanced window A weight field is provided Each new connection is assigned to the server having the fewest number of open connections If several servers have the same low number of open connections then the new connection is sent to the server that was least recently sent a new connection Similar to Least Connections except that N consecutive new connections are assigned to a server before next selecting the server with the least number of open connections where N is the weight assigned to the server 7 Leave Sticky Mode field set to Off 8 The default health check is Ping click Next Other available health checks are m Ping Server Load Balancer periodically pings each server using ICMP Echo The number of retries are configurable If successive ping attempts fail the server is marked as down and is removed from the pool of available servers 60 CHAPTER 7 CONFIGURING CACHE REDIRECTION m Port Server Load Balancer periodically attempts to establish a connection with each server using the same protocol TCP or UDP and port number as the server load balancing service uses If any connection attempt fails the server is marked as down and is removed from the pool of available servers for the service m None No health checking is performed All Servers are assumed to be operational 9 The Cache Profile Configu
7. AND ITS LICENSORS AND ETHER BASED IN CONTRACT OR TORT INCLUDING NEGLIGENCE FOR TIVE DAMAGES OF ANY KIND OR FOR LOSS OF REVENUE OR PROFITS LOSS OF BUSINESS LOSS OF INFORMATION OR DATA OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUC RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRIC OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY ESSENTIAL PURPOSE TS EVEN IF 3COM OR ITS AUTHORIZED DAMAGES AND LIMITS ITS LIABILITY TO E PAID AT 3COM S OPTION THIS DISCLAIMER REMEDY PROVIDED HEREIN SHALL FAIL OF ITS DISCLAIMER Some countries states or provinces do not allow which may vary depending on local law he exclusion or limitation of implied warranties or the imitation of incidental or consequential damages for certain products supplied to consumers or the imitation of liability for death or personal injury so the above limitations and exclusions may be limited in heir application to you When the implied warranties are not allowed to be excluded in their entirety they will be limited to the duration of the applicable written warranty This warranty gives you specific legal rights GOVERNING LAW This Limited Warranty shall be governed by the laws of the State of California U S A and by the laws of the United States excluding their c
8. Messenger Address http 710 20 30 116 index_hy him Ge SUPER V NM 3com SEB STACK ET EE RE Help View The Help view contains important information on Web Browser and PC platform combinations that are recommended when accessing the Web Interface It also provides links to the 3Com web site where you can obtain additional information 3 Contacts 2 Home Page 3 Library 2 Support Web Browsers The Web Interface be accessed by any browser that conforms to the following W3C standards HTML 4 0 CSS 1 0 DOM Browsers conforming to these standards include Microsoft Internet Explorer v4 0 Microsoft Internet Explorer v5 0 Netscape Communicator v4 5 Netscape Communicator v4 6 Netscape Communicator v4 7 PC Platforms The Web Interface can be accessed by web browsers running on any of the following PC operating systems Microsoft Windows 95 Microsoft Windows 98 mi OD dep Internet SOOO zm 1 1 Applet started Start e HUask Capt K Inbox Miro amp Web Inter Exploring S Kldobe aJ Exploing 3 ZAHiaak PRO 38 CHAPTER 4 WORKING WITH THE WEB INTERFACE Setting up SNMP Management Specifying Community Strings You can manage a Server Load Balancer using any Network Manager running the Simple Network Management Protocol SNMP such as 3Com Network Supervisor software You can specify SNMP community strings for the users defined
9. Next 44 CHAPTER 5 CONFIGURING NON REDUNDANT SERVER LOAD BALANCING Enter a descriptive name such as Non redundant SLB in the Name field Enter the name of the person to contact about the Server Load Balancer such as Chris in the Contact field Enter the physical location of the Server Load Balancer such as Lab in the Location field 6 Click Next The Getting Started Configuration page appears 7 Select Non Redundant 8 Click Next The Getting Started IP Settings page appears 10 11 The IP Address Subnet Mask and Default Router fields are completed This is the information you assigned to the Server Load Balancer during the CLI setup If you change these settings you may lose IP connectivity to the Web interface upon completion of this wizard If this occurs you will need to reconnect to the Server Load Balancer using the new IP address Click Next The Getting Started Network Address Translation page appears If you are using private IP subnets for your server or cache subnets and want the servers or caches to be able to initiate connections to the outside check NAT Enabled for Server and Cache Subnets If NAT is enabled packets initiated by the servers and the caches need to be given an IP address on the primary IP subnet This address is the alias address Click Next The Getting Started Password page appears CAUTION The Server Load Balancer does not provide a way to recover a lost password
10. Norm CEE 7 7 erf llen SCHUKO m Der Betrieb dieses Ger ts erfolgt unter den SEIV Bedingungen Sicherheitskleinstspannung gem IEC 950 Diese Bedingungen sind nur gegeben wenn auch die an das Ger t angeschlossenen Ger te unter SELV Bedingungen betrieben werden m Der Switch darf nur dann in einem Einschub montiert werden wenn dieser zur Tragkraftverst rkung auf einer Laufschiene in einem Regal oder einem Tr ger montiert ist Der Einschubmontagesatz alleine reicht nicht aus um das Gewicht des Switch zu tragen m Ist kein Erweiterungsmodul installiert berpr fen Sie bitte den Sitz der Stanzplatte indem Sie alle Schrauben mit einem geeigneten Werkzeug anziehen m Bevor Sie den Schalter Server Load Balancer an das Stromversorgungsmodul Typ 3 anschlie en lesen Sie bitte die Sicherheitshinweise in der Bedienungsanleitung f r das Stromversorgungsmodul Typ 3 Wichtige Sicherheitsinformationen 81 f ACHTUNG Faseroptikanschl sse Optische Sicherheit LASERGER T DER KLASSE I m Niemals ein bertragungslaser betrachten w hrend dieses eingeschaltet ist Niemals direkt auf den Faser TX Anschlu und auf die Faserkabelenden schauen w hrend diese eingeschaltet sind m Die Verwendung von Steuerelementen oder die Anpassung von Leistungen und Verfahren in anderer als der hierin genannten Weise kann zu gef hrlichen Laseremissionen f hren 82 APPENDIX A SAFETY INFORMATION TECHNICAL SPECIFICATIONS AND PIN O
11. Place the unit the right way up on a hard flat surface with the front facing towards you Locate a mounting bracket over the mounting holes on one side of the unit as shown in Figure 3 Figure 3 Fitting a bracket for rack mounting 20 CHAPTER 2 INSTALLING THE SERVER LOAD BALANCER gt You must use the screws supplied with the mounting brackets Damage caused to the unit by using incorrect screws invalidates your warranty 3 Insert the three screws and tighten with a suitable screwdriver Repeat steps 2 and 3 for the other side of the unit 5 Insert the unit into the 19 inch rack and secure with suitable screws not provided Ensure that ventilation holes are not obstructed Connect network cabling Choosing the Correct Cables The 1000BASE FX fiber optic LAN ports Ports 13 and 14 on the Server Load Balancer use SC connectors The 10BASE T 100BASE TX copper LAN ports Ports 1 through 12 use RJ45 connectors Table 6 explains cables to use before connecting a device to the copper ports Table 6 Cabling for Copper Ports Device to Connect Use this Cable Another Server Load Balancer a Crossover cable network switch or router End Station such as a server or Straight through cable a PC Cables are not supplied by 3Com Placing Units On Top of Each Other If the units are free standing up to four units can be placed one on top of the other If you are placing units one
12. and click Add When you have finished entering your user groups click Done Adding IP address ranges defines those IP addresses that make up your user group The Server Load Balancer recognizes any address within these ranges to be part of the user group If a request comes the Server Load Balancer determines that the client is part of the Engineering user group and checks the permissions set for Engineering for the service requested To add IP address ranges to your user group complete the following steps Click Logical View on the Toolbar Point to the User Group window border and left click the mouse button In the pop up list click Add address range From the User Group drop down list box select Engineering Enter 192 168 1 100 in the First IP Address field Enter 192 168 1 150 in the Last IP Address field and click Done Accessing Permissions Creating a Balance Profile Optional 69 You can change user access on specific servers using the Permissions button You are able to allow or deny access for assigned user groups To assign permissions complete the following steps Click Permissions Click on the cell next to Server A Depending on the access already set you are prompted with either Deny Access or Allow Access 3 Click the access you wish to set The icon changes Click OK Creating a Balance Profile Optional gt A U N You can create a unique balance profile that specifies a spe
13. and in either Chapter 5 Configuring Non redundant Server Load Balancing or Chapter 6 Configuring Redundant Server Load Balancing 62 CHAPTER 8 CONFIGURING FOR LOAD BALANCING Defining a Server Subnet Before you can add a server you need to have defined at least one server subnet The default gateway of each server must be set to the floating default gateway address of the Server Load Balancer To define a server subnet complete the following steps Click Logical View on the Toolbar From the Navigation tree select Server Load Balancing Setup Server Subnets 3 Click Add The first wizard page appears Click Next The Server Subnet Define Subnet page appears Enter 192 168 2 254 in the IP Address field If configuring for a redundant configuration you need to enter the IP addresses of both Device A and Device B 6 Enter 255 255 255 0 in the Subnet Mask field 7 Click Next The Server Subnet Device A Floating Address page appears 8 Complete the entry in the Floating Address field For example 192 168 2 200 Do not forget to change the default gateway on your servers to this IP address Click Finish Your server subnet has been added Changing Lan Port Roles 63 Changing Lan Port Roles When configuring server load balancing the physical ports that carry client or server traffic can be specified Each port is assigned to one of the following User Access Defines a port through which clients
14. hinzufuegen oder Instandhaltungsarbeiten verrichten lesen Sie die Sicherheitsanweisungen die in Appendix A Anhang A in diesem Handbuch aufgefuehrt sind 18 CHAPTER 2 INSTALLING THE SERVER LOAD BALANCER Package Contents Your shipping container should contain the following items m Server Load Balancer 3C11620 or Server Load Balancer Plus 3C11621 m User Guide this guide m Power Cord m 2xmounting brackets m screws m 4x rubber feet Choosing a Suitable Site N The Server Load Balancer is suited for use where it can be mounted in a standard 19 inch equipment rack or free standing A rack mounting kit containing two mounting brackets and six screws is supplied with the unit CAUTION Ensure that the ventilation holes are not obstructed When deciding where to position the Server Load Balancer ensure that m Cabling is located away from sources of electrical noise such as radios transmitters and broadband amplifiers m Cabling is located away from power lines and fluorescent lighting fixtures m The Server Load Balancer is accessible and cables can be connected easily m Water or moisture cannot enter the case of the Server Load Balancer m Air flow is not restricted around the Server Load Balancer or through the vents in the side of the Server Load Balancer 3Com recommends that you provide a minimum of 25 mm 1 in clearance m The air is as free from dust as possible m No more t
15. is enabled packets initiated by the servers and the caches need to be given an IP address on the primary IP subnet This address is the alias address Click Next The Getting Started Password page appears CAUTION The Server Load Balancer does not provide a way to recover a lost password If you choose to assign a new password it is suggested you keep note of it in a safe place If you forget your password you will be locked out of the unit If you change the password during the CLI Server Load Balancer setup this is the password you should use and not the blank default login password For Technical Support information see Appendix C Click Next The Getting Started Advanced page appears Click Continue with Advanced Settings and click Next Select Active Passive and click Next The Getting Started Summary page appears Click Finish Your parameters you have entered are ready to be applied Configuring for Active Active Redundancy 49 Configuring for You must complete the Getting Started wizard to configure the Server Active Active Load Balancer for active active redundancy Redundancy To setup up an active active redundancy configuration complete the following steps 1 Click Device View on the Toolbar 2 Select System Getting Started in the Navigation Tree The first Getting Started page is displayed Click Next 3 Enter a descriptive name such as Active Active in the Name field 4 Enter the name of the
16. is the alias address Click Next The Getting Started Password page appears CAUTION The Server Load Balancer does not provide a way to recover a lost password If you choose to assign a new password it is suggested you keep note of it in a safe place If you forget your password you will be locked out of the unit If you change the password during the CLI Server Load Balancer setup this is the password you should use and not the blank default login password For Technical Support information see Appendix C Click Next The Getting Started Advanced page appears Click Continue with Advanced Settings and click Next Select Active Active and click Next The Getting Started Summary page appears Click Finish The parameters you have entered are ready to be applied You are now ready to configure the load balancing services See Chapter 8 Configuring for Load Balancing Active Active Device Allocation Setting Redundancy Settings 51 Active Active device allocation can only be performed when the Server Load Balancer has been configured to be redundant and active active The Active Active device allocation page allows you to allocate which services are currently active on the two redundant Server Load Balancers You can allocate FTP to one Server Load Balancer and HTTP to the other The two Server Load Balancers each provide only the allocated services until a failover occurs To setup up a active active device allocation
17. need to install and use a SuperStack 3 Server Load Balancer 3C16120 or the SuperStack 3 Server Load Balancer Plus 3C16121 to perform server load balancing both non redundant and redundant and cache redirection The guide is intended for use by network administrators who are responsible for installing and setting up network equipment Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format PDF or HTML on the 3Com World Wide Web site http www 3com com 8 ABOUT THIS GUIDE Conventions Table 1 and Table 2 Table 1 Notice Icons Icon Notice Type ist conventions that are used throughout this guide Description instructions i gt Information note Information that describes important features or 1 Caution f Warning Information that alerts you to potential loss of data or potential damage to an application system or device Information that alerts you to potential personal injury Table 2 Text Conventions Convention Description boldface This typeface represents user input Example At the login prompt enter admin Screen displays This typeface represents information as it appears on the screen Syntax The word syntax means that you must evaluate the syntax provided and then supply the appropriate values for the placeholders that appear in angle brackets Example To change your password use the following syntax system pa
18. on top of the other you must use the self adhesive rubber feet supplied Apply the feet to the underside of each unit sticking one in the marked area at each corner Place the units on top of each other ensuring that the feet of the upper unit line up with the recesses of the lower unit Power up Sequence 21 The Power up Sequence Powering up The following sections describe how to get your Server Load Balancer powered up and ready for operation WARNING If you are connecting the Server Load Balancer to a ARPS Type 3 Power Module read the Safety Information section in the documentation shipped with the power system To power up the Server Load Balancer complete the following steps Plug the power cord into the power socket at the rear of the unit Plug the other end of the power cord into your power outlet The unit powers up and runs through its Power On Self Test POST which takes approximately 10 seconds During the POST all ports on the Server Load Balancer are disabled and the LEDs light in a rapid sequence See LEDs on page 14 When the POST has completed check the Power Self Test LED to make sure that your Server Load Balancer is operating correctly See Solving Problems Indicated by LEDs on page 22 22 CHAPTER 2 INSTALLING THE SERVER LOAD BALANCER Solving Problems Indicated by LEDs Table 7 contains a list of problems and suggested solutions if the LEDs indicate a problem For Tech
19. only if an HTTP service has been created 1 Click Cache Assignments The Assign Caches to Services page appears 2 Click on the cell to assign a cache service 3 Click on the cell next to Cache1 The Assign cache to service pop up menu appears Click Assign cache to service The cell for Server A is assigned 5 Repeat the above steps for each of the caches you have created 58 CHAPTER 7 CONFIGURING CACHE REDIRECTION Showing Status and Deleting the Cache 1 2 To view the status of the cache assignments complete the following Steps Click Cache Assignments The Assign Caches to Services page appears Click the cell for Cache A pop up menu with the option to Show status or Delete appears a If you wish to view the status of the server click Show status The Mapping Status dialog appears This dialog box tells you the status of the service running on the assigned cache server b If you wish to delete the cache from the service click Delete You are prompted with a message asking you if you are sure you want to delete the cache from the service Repeat the above steps for each of the servers you have assigned Creating a Cache Profile Optional gt A WN You can create a unique cache profile that specifies a specific algorithm and assign a health check to monitor the status of the servers You can set the health parameters and assign the number of retries seconds period and timeout seconds A d
20. steps for the scenario presented for configuring cache redirection on the Server Load Balancer These steps are explained in detail in this chapter Defining a Cache Subnet Non redundant Configuration Redundant Configuration Adding a Cache Assigning Caches to Services Creating a Cache Profile Optional 54 CHAPTER 7 CONFIGURING CACHE REDIRECTION Cache Redirection Configuration Example Figure 13 illustrates a sample network configuration for cache redirection This example displays how cache redirection works A request is entered into the browser for example http Awww 3Com com The browser then sends the request to the Server Load Balancer The Server Load Balancer looks at the protocol and determines that it is the HTTP protocol and forwards the request to the cache server Upon receipt of the request the cache server determines whether it has a local copy of the requested page If not the cache server sends its own request to www 3Com com When www 3Com com responds to the cache server the cache server forwards the response to the client and if permitted makes a local copy Figure 13 Cache Redirection Configuration Example Server Load Web Balancer outer Browser Cache Server Server Server Defining a Cache Subnet 55 Defining a Cache Subnet Non redundant Configuration oo so WN v 10 Before you can add a c
21. the replacement at list price Customer must ensure defective product is packaged appropriately for safe shipment and sent prepaid to 3Com This replacement prior to 3Com receiving the defective product is different from the fee based Advance Hardware Replacement Service which is available as a contracted service offering Telephone Technical Support will be provided for 12 months from the date of purchase on a commercially reasonable efforts basis Normal business hours may vary by geography contact your local 3Com office for more information m A list of additional documents release notes and frequently asked questions at www 3com com m Full electronic product support information at http knowledgebase 3com com m Information about additional maintenance service options at http www 3com com products services maint_services html REGULATORY NOTICES FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference to radio com
22. 0 The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions France and Peru only This unit cannot be powered from IT supplies If your supplies are of IT type this unit must be powered by 230V 2P T via an isolation transformer ratio 1 1 with the secondary connection point labelled Neutral connected directly to earth ground Imp dance la terre The switch should only be used in a rack if it is mounted on runners a shelf or a tray to support the weight The rack mount kits alone are not sufficient to support the weight of the switch The rack mount kits must not be used to suspend the switch from under a table or desk or attach it to a wall If you are connecting the Server Load Balancer to a Type 3 Power Module read the Safety Information section in the Type 3 Power Module User Guide WARNING Fiber Optic ports Optical Safety CLASSI LASER DEVICE Never look at the transmit laser while it is powered up Never look directly at the fiber TX port and fiber cable ends when they are powered up Use of controls or adjustments of performance or procedures other than those specified herein may result in hazardous laser emissions 78 APPENDIX A SAFETY INFORMATION L information de S curit Importante L installation et la d pose de ce groupe doivent tre confi s un personnel qualifi Si vous entassez l unit Switch avec les unit s SuperStac
23. 0 VAC Advanced Redundant To protect against internal power supply failure you can use this socket Power System Socket to connect a Advanced Redundant Power System ARPS part number 3C16075 to the Server Load Balancer For more information on the Advanced Redundant Power System see the documentation shipped with the power system For normal redundancy the unit requires one Type 3 Power Module part number 3C 16075 For full redundancy the unit requires two Type 3 Power Modules combined using a Type 3 Y Cable part number 3C16077 16 CHAPTER 1 INTRODUCING THE SERVER LOAD BALANCER AN CAUTION The Server Load Balancer can only use a SuperStack Advanced Redundant Power System output WARNING If you are connecting the Server Load Balancer to a ARPS Type 3 Power Module read the Safety Information section in the documentation shipped with the power system CAUTION The Server Load Balancer has no ON OFF switch the only method of connecting or disconnecting main power is by connecting or disconnecting the power cord Downloading 3Com Network Supervisor You can download 3Com Network Supervisor Version 3 0 from the following Web address http www 3com com tns Network Supervisor is a powerful intuitive network management application for small to medium enterprise networks Network Supervisor automatically discovers up to 1500 network devices and shows devices and connections on a graphical display Network manag
24. 800 297468 Luxembourg 0800 3625 Belgium 0800 71429 Netherlands 0800 0227788 Denmark 800 17309 Norway 800 11376 Portugal 0800 831416 France 0800 917959 South Africa 0800 995014 Hungary 06800 12813 Sweden 020 795482 Ireland 1800 553117 Switzerland 0800 55 3072 Israel 1800 9453794 U K 0800 966197 Italy 800 8 79489 Latin America Brazil 0800 13 3266 Puerto Rico 800 666 5065 Mexico 01 800 849CARE Central and South America AT amp T 800 998 2112 North America 1 800 NET 3Com 1 800 638 3266 Enterprise Customers 1 800 876 3266 Returning Products for Repair 89 Returning Products for Repair Before you send a product directly to 3Com for repair you must first obtain an authorization number Products sent to 3Com without authorization numbers will be returned to the sender unopened at the sender s expense To obtain an authorization number call or fax Country Telephone Number Fax Number Asia Pacific Rim Europe South Africa and Middle East Central and South America Argentina Bolivia Brazil Caribbean Chile Colombia Ecuador Mexico Paraguay Peru Uruguay Venezuela 65 543 6500 44 0 1442 435529 525 201 0075 0810 222 3266 511 241 1691 0800 133266 or 55 11 5643 2700 525 201 0004 562 240 6200 525 201 0004 525 201 0004 525 201 0004 525 201 0004 511 241 1691 525 201 0004 525 201 0004 65 543 6348 44 0 1442 436722 From the following countries you may call the toll free
25. D PARTY SOFTWARE USE OF THAT SOFTWARE WILL BE GOVERNED BY THAT AGREEMENT FOR ANY APPLICABLE WARRANTY PLEASE REFER TO THE END USER LICENSE AGREEMENT GOVERNING THE USE OF THAT SOFTWARE SOFTWARE LICENSE AGREEMENT 3Com grants you a nonexclusive nontransferable except as specified herein license to use the accompanying software program s in executable form the Software and accompanying documentation the Documentation subject to the terms and restrictions set forth in this Agreement You are not permitted to lease rent distribute or sublicense except as specified herein the Software or Documentation or to use the Software or Documentation in a time sharing arrangement or in any other unauthorized manner Further no license is granted to you in the human readable code of the Software source code Except as provided below this Agreement does not grant you any rights to patents copyrights trade secrets trademarks or any other rights with respect to the Software or Documentation Subject to the restrictions set forth herein the Software is licensed to be used on any workstation or any network server owned by or leased to you for your internal use provided that the Software is used only in connection with this 3Com product You may reproduce and provide one 1 copy of the Software and Documentation for each such workstation or network server on which the Software is used as permitted hereunder Otherwise the Soft
26. NTED ABOVE CUSTOMER S SOLE REMEDY FOR BREACH OF THIS WARRANTY SHALL BE REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S OPTION TO THE FULL EXTENT ALLOWED BY LAW THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES TERMS OR CONDITIONS EXPRESS OR IMPLIED EITH ER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE INCLUDING WARRANTIES TERMS OR CONDITIONS OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE SATISFACTORY QUALITY CORRESPONDENCE WITH DESCRIPTION NON INFRINGEMENT AND QUIETENJOYMENT ALL OF WHICH ARE EXPRESSLY DISCLAIMED 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE OR USE OF THIS PRODUCT 3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS THE ALLEGE TESTING AND EXAMINATION DISCLOSE THAT D DEFECT OR MALFUNCTION IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER S OR ANY THIRD PERSON S MISUSE NEGLECT IMPROPER INSTALLATION OR TESTING UNAUTHOR THE RANGE OTHER HAZARDS OR ACTS OF GOD OF THE INTENDED USE OR BY ACCIDENT FIRE ZED ATTEMPTS TO OPEN REPAIR OR MODIFY THE PRODUCT OR ANY OTHER CAUSE BEYOND LIGHTNING POWER CUTS OR OUTAGES LIMITATION OF LIABILITY TOT SUPPLIERS ANY LIABILITY WH DENTAL CONSEQUENTIAL INDIRECT SPECIAL OR PUNIT INC HE FUL L EXTENT ALLOWED BY LAW 3COM ALSO EXCL UDES FOR ITSELF
27. QV Scom SuperStack 3 Server Load Balancer Server Load Balancer Plus User Guide 3C16120 3C16121 http www 3com com Part No 990 0049 00 Published June 2001 3Com Corporation 5400 Bayfront Plaza Santa Clara California 95052 8145 Copyright O 2001 3Com Technologies All rights reserved No part of this documentation may be reproduced in any form or by any means or used to make any derivative work such as translation transformation or adaptation without written permission from 3Com Technologies 3Com Technologies reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Technologies to provide notification of such revision or change 3Com Technologies provides this documentation without warranty term or condition of any kind either implied or expressed including but not limited to the implied warranties terms or conditions of merchantability satisfactory quality and fitness for a particular purpose 3Com may make improvements or changes in the product s and or the program s described in this documentation at any time If there is any software on removable media described in this documentation it is furnished under a license agreement included in the hard copy documentation UNITED STATES GOVERNMENT LEGEND If you are a United States government agency then this documentation and the software described herein are provided to you s
28. RSTACK 3 SERVER LOAD BALANCER PLus 3C16121 HARDWARE 3Com warrants to the end user Customer that this hardware product will be substantially free from material defects in workmanship and materials under normal use and service for the following length of time from the date of purchase from 3Com or its authorized reseller Lifetime for as long as the original Customer owns the product or for 5 years after product discontinuance whichever occurs first not transferable to a subsequent end user 3Com s sole obligation under this express warranty shall be at 3Com s option and expense to repair the defective product or part deliver to Customer an equivalent product or part to replace the defective item or if neither of the two foregoing options is reasonably available refund to Customer the purchase price paid for the defective product All products that are replaced will become the property of 3Com Replacement products or parts may be new or reconditioned 3Com warrants any replaced or repaired product or part for ninety 90 days from shipment or the remainder of the initial warranty period whichever is longer SOFTWARE 3Com warrants to Customer that each software program licensed from it except as noted below will perform in substantial conformance to its published program specifications for a period of ninety 90 days from the date of purchase from 3Com or its authorized reseller 3Com warrants the media containing s
29. UTS Server Load Balancer Specifications Physical Dimensions The following table lists the technical specifications for the Server Load Balancer and the Server Load Balancer Plus Height 65 8 mm 2 59 in x Width 440 mm 17 3 in x Depth 368 4 mm 14 5 in Weight 6 6 Kg 14 55 Ibs Environmental Requirements Operating Temperature Storage Temperature Operating Humidity Standards 0 to 40 C 32 to 104 F 40 to 70 8 to 158 F 10 95 relative humidity non condensing EN60068 to 3Com schedule Package testing paras 2 1 2 2 2 30 and 2 32 Operational testing paras 2 1 2 2 2 30 and 2 13 Safety Agency Certifications UL 1950 EN60950 CSA 22 2 No 950 IEC 60950 IEC 825 1 EN 60825 1 EMC Emissions Immunity CISPRR 22 Class A EN55022 1998 Class A FCC Part 15 Subpart B Class A ICES 003 Class A VCCI Class A AS NZS 3548 Class A CNS 13438 Class A EN61000 3 2 EN 55024 1998 Heat Dissipation 250 watts maximum 850 BTU hour maximum Power Supply AC Line Frequency Input Voltage Options Current Rating 50 60 Hz 100 240 VAC 3 A amps maximum 84 APPENDIX B TECHNICAL SPECIFICATIONS AND PIN OUTS Console Port Cable 9 pin to RS232 25 pin Server Load Balancer Cable Connector 9 Pin Female Screen Shell e PC Terminal Cable Connector 25 pin Female 9 1 screen PC AT Serial 9 pin to 9 pin Server Load Balancer C
30. able Connector 9 Pin Female DTR 4 e ne es EN De 2 eH mr cis 8 EN E E EN es 5 eil PC AT Serial Port Cable Connector 9 pin Female 4 DR er TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services This appendix describes these services Information contained in this appendix is correct at time of publication For the most recent information 3Com recommends that you access the 3Com Corporation World Wide Web site Online Technical Services World Wide Web Site 3Com Knowledgebase Web Services 3Com offers worldwide product support 24 hours a day 7 days a week through the following online systems World Wide Web site m 3Com Knowledgebase Web Services m 3Com FTP site To access the latest networking information on the 3Com Corporation World Wide Web site enter this URL into your Internet browser http www 3com com This service provides access to online support information such as technical documentation and software as well as support options that range from technical education to maintenance and professional services This interactive tool contains technical product information compiled by 3Com expert technical engineers around the globe Located on the World Wide Web at http knowledgebase 3com com this service gives all 3Com customers and partners complementary round the clock access to t
31. ache you need to have defined at least one cache subnet The cache subnet cannot be in the same subnet as the server The following steps describe how to create a cache subnet if you are configured for non redundant server load balancing To create a cache subnet complete the following steps Click Logical View on the Toolbar From the Navigation tree select System Setup Cache Subnets Click Aad The first wizard page appears Click Next The Cache Subnet Configure Address page appears Enter 192 168 3 200 in the IP Address field Enter 255 255 255 0 in the Subnet Mask field Click Next The Cache Subnet Floating Address page appears Complete the entry in the Floating Address field This is the floating default gateway IP address For example 192 168 3 150 Do not forget to change the default gateway on your caches to this IP address Click Next The Cache Subnet page appears Click Finish Your cache subnet has been added 56 CHAPTER 7 CONFIGURING CACHE REDIRECTION Redundant Configuration gt soo Uu BP UN 10 11 The following steps describe how to create a cache subnet if you are configured for redundant server load balancing The cache subnet cannot be in the same subnet as the server To create a cache subnet complete the following steps Click Logical View on the Toolbar From the Navigation tree select System Setup Cache Subnets Click Aad The first wizard page appears
32. cal telephone support services To find out more about your support options call the 3Com technical telephone support phone number at the location nearest you When you contact 3Com for assistance have the following information ready m Product model name part number and serial number m A list of system hardware and software including revision levels m Diagnostic error messages m Details about recent configuration changes if applicable Here is a list of worldwide technical telephone support numbers These numbers are correct at the time of publication Refer to the 3Com Web site for updated information Country Telephone Number Country Telephone Number Asia Pacific Rim Australia 1800 678 515 P R of China 10800 61 00137 or Hong Kong 800 933 486 021 6350 1590 or India 61 2 9937 5085 or 00800 0638 3266 000800 6501111 Singapore 800 6161 463 Indonesia 001 800 61 009 S Korea 00798 611 2230 or Japan 03 5783 1270 02 3455 6455 Malaysia 1800 801 777 Taiwan R O C 00798 611 2230 New Zealand 0800 446 398 Thailand 0080 611 261 Pakistan 61 2 9937 5083 001 800 611 2000 Philippines 1235 61 266 2602 Europe Middle East and Africa From anywhere in these regions call 44 0 1442 435529 phone 44 0 1442 436722 fax 88 APPENDIX C TECHNICAL SUPPORT Country Telephone Number Country Telephone Number Europe and South Africa From the following countries you may use the toll free numbers Austria 0
33. can access the Server Load Balancer Cache Access Defines a port to which a cache device is connected Server Access Defines a port to which servers are connected either directly or through a network switch Management Access Defines the port used for management access to the Server Load Balancer If no Management Access port is specified you can manage the Server Load Balancer through any user access port Redundant Link Defines the port connected as a redundant link to another Server Load Balancer Only one redundant link port is allowed To change Lan port roles complete the following steps Click Logical View on the Toolbar Select Server Load Balancing Setup Lan Port Roles in the Navigation Tree The Lan Port Roles page appears Click a port to open a pop up menu that contains operations which you can set for that particular port Choose the access you want For example if you wish to assign port 1 from the current access to Server Access complete the following a Click on the port for 7 A pop up menu appears with a list of port roles Click Server Access The Saving Data window appears and the port changes color Click Close 64 CHAPTER 8 CONFIGURING FOR LOAD BALANCING Adding a Server Uu The servers must first be defined before they can be bound to a particular service The server is given an arbitrary name this does not have to be its DNS name and is identified by i
34. ch trade secrets in confidence You further acknowledge and agree that ownership of and title to the Software and Documentation and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers The licenses granted hereunder are perpetual unless terminated earlier as specified below You may erminate the licenses and this Agreement at any time by destroying the Software and Documentation ogether with all copies and merged portions in any form The licenses and this Agreement will also terminate immediately if you fail to comply with any term or condition of this Agreement Upon such termination you agree to destroy the Software and Documentation together with all copies and merged portions in any form n the event any provision of this Agreement is found to be invalid illegal or unenforceable the validity egality and enforceability of any of the remaining provisions shall not in any way be affected or impaired and a valid legal and enforceable provision of similar intent and economic impact shall be substituted therefor This Agreement sets forth the entire understanding and agreement between you and 3Com and supersedes all prior agreements whether written or oral with respect to the Software and Documentation and may be amended only in a writing signed by both parties Should you have any questions concerning this Agreement or if you desire to contact 3Com for any reason please contact the 3Com s
35. cific algorithm and assign a health check to monitor the status of the servers You can set the health parameters and assign the number of retries seconds period and timeout seconds A default balance profile set to Round robin exists and will work for most applications To create a balance profile complete the following steps Click Logical View on the Toolbar From the Navigation tree select Server Load Balancing gt Balance Profiles Click Add The first wizard page appears Click Next The Balance Profile Configuration General Information page appears Enter a descriptive name such as Profilel in the Name field 70 CHAPTER 8 CONFIGURING FOR LOAD BALANCING 6 Choose a balancing algorithm The default balance profile is Round robin Table 11 describes the available algorithms Table 11 Supported Algorithms and Descriptions Supported Algorithms Description Round Robin Each new connection is assigned to the next server in the list This distributes connections evenly between the servers Weighted Round Robin Similar to Round Robin except that N consecutive new connections are assigned to a server before selecting the next server in the list where N is the weight assigned to the server Servers with higher performance or capacity should be assigned higher weight The weight assigned to the server is assigned using the Assign server to service Advanced window A weight field is provided Least Connectio
36. complete the following steps Click Logical View on the Toolbar Select Server Load Balancing Active Active Device The Active Active Device Allocation page is displayed Choose the virtual host s you wish to change the position of Click on the host and then click the appropriate arrow You are now ready to configure the load balancing services See Chapter 8 Configuring for Load Balancing Setting Redundancy Settings Whether you are configured for non redundant or redundant server load balancing if there are multiple Server Load Balancers the Virtual Router Identifier VRID for each device must be unique or the service may not come up and one of the other Server Load Balancers declares itself the primary device To enter a unique number for the VRID complete the following steps 1 Click Logical View on the Toolbar Select Server Load Balancing Redundancy Setting in the Navigation Tree The Redundancy Settings page is displayed Enter 25 in the Virtual router ID A field Enter 26 in the Virtual router ID B field 5 Click OK 52 CHAPTER 6 CONFIGURING REDUNDANT SERVER LOAD BALANCING CONFIGURING CACHE REDIRECTION In this chapter a typical application redirection scenario is presented with directions for configuring the Server Load Balancer The information presented in this chapter is for example purposes only and actual addresses will vary The following list provides a checklist of the configuration
37. direction 54 configuration example of redundant server load balancing 46 configuration example of server load balancing 42 configuration methods 33 35 console port 13 control buttons 34 conventions notice icons About This Guide 8 text About This Guide 8 D device view Web interface 33 34 downloading Java Runtime Environment for Internet Explorer 28 Java Runtime Environment for Netscape Navigator 29 E Ethernet address 15 H help view Web interface 37 information area of the Web interface 31 installing prerequisites 18 L LEDs 14 logical view assignment buttons 36 assignments buttons 36 Web interface 35 92 INDEX M MAC address 15 MIBs 86 N navigation tree of the Web interface 31 network supplier support 86 O Online 85 P package contents 18 port hotspots 33 ports console 13 powering up 21 product name 15 R rack mounting 19 redundant server load balancing configuration example 46 returning products for repair 89 S Safety 76 safety information French 78 German 80 server adding a server 64 assigning servers to services 66 showing status 66 unassigning the server from the service 66 Server Load Balancer 3C number 15 ARPS socket 15 cable connections 20 console port 13 dimensions 83 Ethernet address 15 installing 18 MAC address 15 package contents 18 power socket power socket 15 powering up 21 product name 15 rack mounting 19 serial n
38. duct and location qualify for the next business day advance hardware replacement see http support 3com com registration docs hw_repl html FREE telephone technical support for 12 months with real time call handling during normal business hours 2 Please refer to the Technical Support appendix in the User Guide for telephone numbers Find out more when you register online at http support 3com com Shipment of a Replacement Prior to 3Com Receiving the Defective Product only if Customer provides a purchase order number credit card number or other method of payment acceptable to 3Com to be used if 3Com needs to charge Customer for the replacement as explained below 3Com will make commercially reasonable efforts to ship the replacement product not later than five 5 business days after receiving the request for a replacement or deliver the replacement by the next business day if the customer has registered but may be delayed due to product availability or export or import procedures Request for next business day replacements must be received by 3 00pm local time to be able to meet shipping deadline The shipment of a replacement product prior to 3Com receiving the defective product is subject to local legal requirements and may not be available in all locations When such a replacement is provided and Customer fails to return the original product to 3Com within fifteen 15 days after receipt of the replacement 3Com will charge Customer for
39. echnical information on most 3Com products 86 APPENDIX C TECHNICAL SUPPORT 3Com FTP Site p Download drivers patches software and MIBs across the Internet from the 3Com public FTP site This service is available 24 hours a day 7 days a week To connect to the 3Com FTP site enter the following information into your FTP client m Hostname ftp 3com com m Username anonymous m Password your Internet e mail address gt You do not need a user name and password with Web browser software such as Netscape Navigator and Internet Explorer Support from Your Network Supplier If you require additional assistance contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready m Product model name part number and serial number m Alist of system hardware and software including revision levels m Diagnostic error messages m Details about recent configuration changes if applicable If you are unable to contact your network supplier see the following Section on how to contact 3Com Support from 3Com 87 Support from 3Com If you are unable to obtain assistance from the 3Com online technical resources or from your network supplier 3Com offers techni
40. efault cache profile set to Round robin exists and will work for most applications To create a cache profile complete the following steps Click Logical View on the Toolbar From the Navigation tree select Server Load Balancing gt Cache Profiles Click Add The first wizard page appears Click Next The Cache Profile Configuration General Information page appears Enter a descriptive name such as Cache2 in the Name field Creating a Cache Profile Optional 59 6 Choose a algorithm The default algorithm is Round robin Table 10 describes the available algorithms Table 10 Supported Algorithms and Description Supported Algorithms Description Destination Round Robin Weighted Round Robin Least Connections Weighted Least Connections The Destination IP address of the client s packets is hashed and used as an index to an array of active servers bound to the service This is appropriate for redirection of sessions between a smaller set of clients and a larger set of servers for example local users of the extraNet or the World Wide Web Each new connection is assigned to the next server in the list This distributes connections evenly between the servers Similar to Round Robin except that N consecutive new connections are assigned to a server before selecting the next server in the list where N is the weight assigned to the server Servers with higher performance or capacity should be assigned higher
41. ers When the server reply is received by the Server Load Balancer it changes the port number back to 80 then forwards the packet on to the client To change the port complete the following steps 1 Click Server Assignments 2 Click on the cell next to Server A A pop up menu appears 3 Click Assign server to service Advanced The Assign Server to Service window appears 4 Enter 8080 in the Server port field 5 Click OK 68 CHAPTER 8 CONFIGURING FOR LOAD BALANCING Adding a User Group Adding IP Address Ranges to User Groups ao uU WN You can define a user group and control that group s access to the load balanced services For each request to a service the Server Load Balancer determines which user group the client IP address is part of It then allows or denies access to the service based on the permissions that were set for this user group The Server Load Balancer has a default user group that is defined as 0 0 0 0 to 255 255 255 255 This user group includes every possible IP address To add a user group complete the following steps Click Logical View on the Toolbar Point to the User Group window border and left click the mouse button In the pop up list click Add The Add User Group window appears Enter a descriptive name such as Engineering in the Name field It is recommended to keep the user group name to a maximum of 20 characters Repeat Step 4 for every user group you wish to add
42. ers can view network activity monitor stress and set thresholds and alerts This information helps to provide the most efficient COst effective use of network resources Version 3 0 adds significant extra functionality designed to detect network inefficiency and optimize network performance Features include support for related and recurring events user definable reports auto alerting using pager or SMS messages and simple updates from the 3Com Web site 3Com Network Supervisor offers Telnet and Web device management p INSTALLING THE SERVER LOAD BALANCER This chapter contains the information you need to install and set up the Server Load Balancer It covers the following topics Package Contents Choosing a Suitable Site Rack mounting Placing Units On Top of Each Other The Power up Sequence Solving Problems Indicated by LEDs WARNING Safety Information Before installing or removing any components from the Server Load Balancer or carrying out any maintenance procedures you must read the safety information provided in Appendix A of this guide AVERTISSEMENT Consignes de s curit Avant d installer ou d enlever tout composant du Server Load Balancer ou d entamer une proc dure de maintenance lisez les informations relatives la s curit qui se trouvent dans l Appendice A de ce guide WARNHINWEIS Sicherheitsinformationen Bevor Sie Komponenten aus dem Server Load Balancer entfernen oder dem Server Load Balancer
43. erver Load Balancer front view Balancer Front View Detail Packet QQOQQQ OOO090 st OOOOOO 0009000 a OS ee I 10BASE T 100BASE TX Power Self Test LED Port Status LEDs Power LED 10BASE T 100BASE TX Ports 1000BASE SX Ports 1000BASE SX Console Port Port Status LEDs Ports The Server Load Balancer and Server Load Balancer Plus have twelve dedicated 10BASE T 100BASE TX ports and two 1000BASE SX ports Console Port The console port allows you to use a terminal or serial PC connector to access the command line interface CLI The CLI allows you to assign the IP address to the Service Load Balancer and provides basic configuration capabilities For console port pin out information see Appendix B 14 CHAPTER 1 INTRODUCING THE SERVER LOAD BALANCER LEDs Table 5 lists LEDs visible on the front of the Server Load Balancer and how to read their status according to color Table 5 LED Behavior Indicates LED Color Power Self Test LED Yellow Yellow flashing Off Power LED Green Green flashing The Server Load Balancer has failed its Power On Self Test POST or a failure is detected in the runtime The Server Load Balancer is running POST No fault has been detected The Server Load Balancer is receiving power The Server Load Balancer is receiving power and d
44. fety standards Power Cord Set This must be approved for the country where it is used U S A and cord set must be UL approved and CSA certified Canada a The minimum specification for the flexible cord is No 18 AWG Type SV or SJ 3 conductor The cord set must have a rated current capacity of at least 10A a The attachment plug must be an earth grounding type with a NEMA 5 15P 15A 125V or NEMA 6 15P 15A 250V configuration United The supply plug must comply with BS1363 3 13 amp Kingdom only and be fitted with a 5A fuse which complies with BS1362 a The mains cord must be lt HAR gt or lt BASEC gt marked and be of type HO3VVF3GO 75 minimum Europe only The supply plug must comply with CEE 7 7 5 a The mains cord must be lt HAR gt or lt BASEC gt marked be of type HO3VVF3GO 75 minimum Denmark The supply plug must comply with section 107 2 D1 standard DK2 1a or DK2 5a Switzerland The supply plug must comply with SEV ASE 1011 The appliance coupler the connector to the unit and not the wall plug must have a configuration for mating with an EN60320 IEC320 appliance inlet The socket outlet must be near to the unit and easily accessible You can only remove power from the unit by disconnecting the power cord from the outlet Important Safety Information 77 This unit operates under SELV Safety Extra Low Voltage conditions according to IEC 95
45. ge Directive 73 23 EEC and EMC Directive 89 336 EEC as amended by European Directive 93 68 EEC Warning This is a class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures VCCI STATEMENT COREL VCCI DE 83022 AMBHRTRECI SOSE TEE 158272505057 OBSI IEREDSEU GR EMT DE DER 54522095944 BSMI STATEMENT SARE isi INA Ae gt TERME HERE on 2
46. han four Server Load Balancer units are placed on top of one another if the units are free standing m Temperature operating limits are not exceeded It is recommended that the unit is installed in a clean air conditioned environment m Ensure there is adequate clearance at the front of the unit to ensure that the fibers are not damaged as they have a restricted bend radius Rack mounting 19 Rack mounting gt The Server Load Balancer is 1 5U and fits in most standard 19 inch racks However if you are connecting the Server Load Balancer to a ARPS Type 3 power module a runner shelf or tray is recommended to support the additional weight You will need to allow a 2U space within the rack for each Server Load Balancer WARNING The rack mount kits alone are not sufficient to support the weight of the Server Load Balancer when attached to an ARPS power module It is recommended that you use a runner shelf or tray to support the total weight The rack mount kits must not be used to suspend the Server Load Balancer from under a table or desk or attach it to a wall CAUTION You must use a full depth shelf or support that will not obstruct the air flow through the side panels of the Server Load Balancer CAUTION Disconnect all cables from the Server Load Balancer before continuing Remove all self adhesive pads from the underside of the Server Load Balancer if they have been fitted To rack mount your Server Load Balancer
47. he Assign server to service pop up menu appears 3 Click Assign server to service The cell for Server A is assigned 1 2 Repeat the above steps for each of the servers you have created To show the status of a server assignments or to delete one complete the following steps Click Server Assignments The Assign servers to services page appears Click the cell for Server A A pop up menu with the option to Show status or Delete appears a If you wish to view the status of the server click Show status The Mapping Status dialog appears This dialog box tells you the status of the service running on the assigned server b If you wish to unassign the server click Delete You are prompted with a message asking you if you are sure you want to delete the server from the service Repeat the above steps for each of the servers you want unassigned Assigning Server to Services Advanced Assigning Servers to Service 67 In addition to performing Network Address Translation the Server Load Balancer is capable of translating the TCP or UDP port on which the service is operating The virtual service can be configured for a well known port while the servers respond to an alternate port For example a Web service is set up on the standard TCP port 80 and translated to 8080 When a request is received from a client on port 80 the Server Load Balancer changes the port to 8080 before forwarding the packet on to one of the available serv
48. ield 4 Enter the name of the person to contact about the Server Load Balancer such as Bob in the Contact field 5 Enter the physical location of the Server Load Balancer such as office in the Location field Click Next 6 Select Redundant The Getting Started Select Device B page displays 48 CHAPTER 6 CONFIGURING REDUNDANT SERVER LOAD BALANCING 10 11 12 13 14 15 Select the serial number of Device B In this case this is the second Server Load Balancer If the device you wish to use as Device B does not appear in the list check that the cable linking Device B to Device A is connected properly Click Next The Getting Started IP Settings page appears If you change these settings you may lose IP connectivity to the Web interface upon completion of this wizard If this occurs you will need to reconnect to the Server Load Balancer using the new IP address The IP Address Subnet Mask and Default Router fields are completed These is the information you assigned to the Server Load Balancer during the CLI setup Enter 10 20 30 56 in the Device B IP Address field This is the IP address assigned to the second Server Load Balancer Click Next The Getting Started Network Address Translation page appears If you are using private IP subnets for your server or cache subnets and want the servers or caches to be able to initiate connections to the outside check NAT Enabled for Server and Cache Subnets If NAT
49. ing Software AN A WN You can upgrade the management software using the Software Upgrade window CAUTION It is suggested that when performing a software upgrade you disable any security filters you have enabled See Modifying Security Filters on page 72 To upgrade the software complete the following steps Click Device View on the Toolbar Select System Control Software Upgrade in the Navigation Tree The Software Upgrade window is displayed Copy the software upgrade file into an appropriate directory on a TFTP server Enter the name of the software field in the File name field The filename format is slbv350a bin CAUTION You must use the slbv350a bin format otherwise the upgrade fails 6 Enter the IP address of the TFTP server in the TFTP Server IP Address field 7 Click OK During the upgrade the Power Self Test LED flashes green The upgrade procedure takes about 5 minutes When the upgrade is complete the Server Load Balancer is reset CAUTION During the upgrade do not power down or reset the Server Load Balancer 40 CHAPTER 4 WORKING WITH THE WEB INTERFACE CONFIGURING NON REDUNDANT SERVER LOAD BALANCING In this chapter a typical non redundant server load balancing scenario is presented with instructions for configuring the Server Load Balancer The information presented in this chapter is for example purposes only and actual addresses will vary The following is a list of steps f
50. inks 27 Customize 4 FreeHotmal Windows Windows Media PointCast Business Network 2 5272 00 dm 9 B 2309 39 A2 Back Foyer Stop Refresh Home Search Favorites Histo Mai Size Pint Edi Discuss Realcom Messenger Address 27 1020 20116 dv hm c SUPER SLB primary 3com STACK BETTE vica Loia View 1 RR RN TN cdd System Getting Started Control amp C Management amp Unit 2 Event Log assis vs inm m Color Key Bridge Polling Interval Poll N Physical Inferface Protocol BA Security Information Area 21 Applet started Frame Klinbox Microsot amp Web Interta 2 H esk Capture ZAHilaak PRO Intenet 112744 32 CHAPTER 4 WORKING WITH THE WEB INTERFACE Summary View The Summary View displays the latest information for the Server Load Balancer The Summary View only displays information for the Server Load Balancer You cannot perform any operations from this view You must use the Device View and the Logical View to perform operations Figure 7 Summary View icrosoft Internet Explorer Eie Edt View loo Links Customize Links Ftee Hotmail Windows 4 amp WindowsMedia PointCast Business Network A a 9 4 3 9 88 9 2 A E Back FE Stop Refresh Home
51. k 3 Hub l unit Server Load Balancer doit tre install e en dessous des unit s Hub plus troites Brancher l unit une source de courant mise la terre pour assurer la conformit aux normes de s curit Cordon lectrique doit tre agr ans le pays d utilisation Etats Unis et Le cordon doit avoir recu l homologation des UL et un Canada certificat de la CSA Le cordon souple doit respecter titre minimum les sp cifications suivantes calibre 18 AWG m type SV ou SJ 3 conducteurs a Le cordon doit tre en mesure d acheminer un courant nominal d au moins 10 A La prise femelle de branchement doit tre du type mise la terre mise la masse et respecter la configuration NEMA 5 15P 15 125 V ou NEMA 6 15P 15 250 V Danemark La prise m le d alimentation doit respecter la section 107 2 D1 de la norme DK2 1a ou DK2 5a Europe wm La prise secteur doit tre conforme aux normes 7 7 SCHKO LE cordon secteur doit porter la mention lt HAR gt ou lt BASEC gt et doit tre de type HO3VVF3GO 75 minimum Suisse La prise m le d alimentation doit respecter la norme SEV ASE 1011 Le coupleur d appareil le connecteur du groupe et non pas la prise murale doit respecter une configuration qui permet un branchement sur une entr e d appareil EN60320 CEI 320 La prise secteur doit se trouver proximit de l appareil et son acc s doit tre facile Vous ne pouvez me
52. ly the Strict Source Route and Loose Source Route IP options using the IP Source Route filter Modifying Security modify the security filters complete the following steps Filters 1 Click Device View on the Toolbar 2 Select Security Attack Filters 3 Click Modify The Modify Attack Filters page appears 4 Select the attack filters you wish to enable and click OK Modifying User Access Modifying Security Filters Attack Mitigation 73 To modify the access of either the admin or monitor user complete the following steps Click Device View on the Toolbar 2 Select Security User 3 You can modify the user access for either the admin or monitor Modifying Admin Access a To modify the admin access click Modify Admin The Modify Password page appears b Enter a new password and confirm Modifying Monitor Access a To modify the monitor access click Modify Monitor The Modify Password page appears b Enter a new password and confirm CAUTION The Server Load Balancer does not provide a way to recover a lost password If you choose to assign a new password it is suggested you keep note of it in a safe place If you forget your password you will be locked out of the unit If you change the password during the CLI Server Load Balancer setup this is the password you should use and not the blank default login password For Technical Support see Appendix C 74 CHAPTER 8 CONFIGURING FOR LOAD BALANCING
53. mputer Programs is available to you from 3Com upon written request The Software including the Documentation and all related technical data and any copies thereof collectively Technical Data is subject to United States Export control laws and may be subject to export or import regulations in other countries In addition the Technical Data covered by this Agreement may contain data encryption code which is unlawful to export or transfer from the United States or country where you egally obtained it without an approved U S Department of Commerce export license and appropriate foreign export or import license as required You agree that you will not export or re export the Technical Data or any copies thereof or any products utilizing the Technical Data in violation of any applicable laws or regulations of the United States or the country where you legally obtained it You are responsible for obtaining any licenses to export re export or import the Technical Data In addition to the above the Product may not be used exported or re exported i into or to a national or resident of any country to which the U S has embargoed or ii to any one on the U S Commerce Department s Table of Denial Orders or the U S Treasury Department s list of Specially Designated Nationals You acknowledge and agree that the structure sequence and organization of the Software are the valuable rade secrets of 3Com and its suppliers You agree to hold su
54. munications in which case the user will be required to correct the interference at their own expense INFORMATION TO THE USER If this equipment does cause interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures m Reorient the receiving antenna m Relocate the equipment with respect to the receiver m Move the equipment away from the receiver m Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio TV Interference Problems This booklet is available from the U S Government Printing Office Washington DC 20402 Stock No 004 000 00345 4 In order to meet FCC emissions limits this equipment must be used only with cables which comply with IEEE 802 3 CSA STATEMENT This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du Reglement sur le mat riel brouilleur du Canada CE STATEMENT EUROPE This product complies with the European Low Volta
55. ncing redundant Web service Server Load Balancer 1 is the Primary server load Configuration balancer which actively handles client requests sent to the VIP Server Example Load Balancer 2 automatically recognizes the settings on Server Load Balancer 1 and is configured for the same service Figure 12 Redundant Server Load Balancing Configuration Example 4 Subnet 10 20 30 X L2 Switch Server Load Balancer 1 IP 10 20 30 116 Peer IP Address 10 20 30 56 Port 12 Subnet Mask 255 255 255 0 Redundant Link Default Router 10 20 30 254 Server Load Balancer 2 IP Address 10 20 30 56 Subnet Mask 255 255 255 0 Default Router 10 20 30 254 Floating IP Address 192 168 2 200 Port 5 L2 Switch Server A Server B Server C IP 192 168 2 1 IP 192 168 2 2 IP 192 168 2 3 Default Gtwy 192 168 2 200 Default Gtwy 192 168 2 200 Default Gtwy 192 168 2 200 Port 80 Port 8080 Port 80 Configuring for Active Passive Redundancy 47 Configuring for You must complete the Getting Started wizard to configure the Server Active Passive Load Balancer for active passive redundancy Redundancy To setup up a for active passive redundancy configuration complete the following steps 1 Click Device View on the Toolbar 2 Select System Getting Started in the Navigation Tree The first Getting Started page is displayed Click Next 3 Enter a descriptive name such as Active Passive in the Name f
56. nical Support information see Appendix C Table7 Problems Indicated by LEDs Problem Suggested Solution The Power LED does not light On powering up the Power Self Test LED lights yellow A link is connected and yet the Status LED for the port does not light Check that the power cable is firmly connected to the relevant unit and to the supply outlet If the connection is secure and there is still no power you may have a faulty power cord The relevant unit has failed its Power On Self Test POST because of an internal problem Contact your supplier for advice Check that All connections are secure The devices at both ends of the link are powered up The devices at both ends of the link have the same auto negotiation setting i e both enabled or both disabled The quality of cable is satisfactory The correct type of cable crossover or straight through is used SETTING UP FOR MANAGEMENT This chapter explains the management methods used for managing a Server Load Balancer and details the steps required before you can configure a Server Load Balancer to suit the needs of your network It covers the following topics m Methods of Managing the Server Load Balancer m Assigning an IP Address 24 CHAPTER 3 SETTING UP FOR MANAGEMENT Methods of Managing the Server Load Balancer You can manage a Server Load Balancer using one of the following methods m Web interface management
57. nly be configured from the Navigation Tree You can setup the Server Load Balancer by two methods through the Navigation Tree or by clicking on the following device mimic hotspots m Port Hotspots Each port on the mimic including the console port is a hotspot Click a port to open a pop up menu that contains operations which you can launch for that particular port a Unit Hotspot The non port area of the mimic is a hotspot Click anywhere on this area to open a pop up menu that contains operations which you can launch for the Server Load Balancer as a whole 34 CHAPTER 4 WORKING WITH THE WEB INTERFACE Figure 8 Device View nei 5 Tools Links Customize Linke amp FreeHotmal amp Windons Windows Media PointCast Business Network D Aa Back Ever Stop Retesh Home Search History Mail Size Print Edit Discuss Realcom Messenger Address hitp 710 20 30 116 index_dv him CaN a SUPER 3com STACK Device View TS E EE TT Ere r TA 549 System 3com Getting Started Control C3 Management Unit H A Event Log E C3 Bridge E Link Aggregates H Fast Failover Pairs Spanning Tree 5 Physical Inferface amp C Ethernet Protocol Control Buttons eO Ei Security Port Cl Devi Hym Pop up Menu Unit Pop up Me
58. ns Each new connection is assigned to the server having the fewest number of open connections If several servers have the same low number of open connections then the new connection is sent to the server that was least recently sent a new connection Weighted Least Similar to Least Connections except that N consecutive Connections new connections are assigned to a server before next selecting the server with the least number of open connections where N is the weight assigned to the server Quickest Last Response When new connection is established between a client and server the Server Load Balancer monitors the client s first request for data When the server responds to the initial request the Server Load Balancer notes the time delay between the request and the response and stores that value as the server s response time Each new connection is sent to the server having the fastest response time Since server response time changes dynamically a decay algorithm is applied periodically to all response times to prevent a server from being locked out after one long response delay Quickest Average Similar to Quickest Last Response except the response Response time is averaged over approximately the last eight measurements for the server A decay algorithm is also applied to the average response times Creating a Balance Profile Optional 71 7 Leave Sticky Mode field set to Off 8 The default health check is Ping click Next O
59. nsmission fibres optiques et les embouts de c bles fibres optiques tant qu ils sont sous tension L utilisation de contr les de r glages de performances ou de proc dures autres que ceux qui sont sp cifi s au sein du pr sent document risquent d entra ner l exposition des rayonnements laser dangereux 80 APPENDIX A SAFETY INFORMATION Wichtige Sicherheitsinformat ionen m Die Installation und der Ausbau des Ger ts darf nur durch Fachpersonal erfolgen m Wenn die Server Load Balancer Einheit in einer Stapel mit anderen SuperStack 3 Hub Einheiten eingebaut werden soll mu die Server Load Balancer Einheit unter die schmaleren Hub Einheiten eingebaut werden m Das Ger t mu an eine geerdete Steckdose angeschlossen werden die europ ischen Sicherheitsnormen erf llt m Der Anschlu kabelsatz mu mit den Bestimmungen des Landes bereinstimmen in dem er verwendet werden soll m Der Ger testecker der Anschlu an das Ger t nicht der Wandsteckdosenstecker mu eine passende Konfiguration f r einen Ger teeingang gem EN60320 IEC320 haben m Die Netzsteckdose mu in der N he des Ger ts und leicht zug nglich sein Die Stromversorgung des Ger ts kann nur durch Herausziehen des Ger tenetzkabels aus der Netzsteckdose unterbrochen werden Europe Das Netzkabel mu vom Typ HO3VVF3GO 75 Mindestanforderung sein und die Aufschrift lt HAR gt oder lt BASEC gt tragen Der Netzstecker mu die
60. nu Navigation Tree 81 Getting Started fip Start c HUask Capt K InboxMiro amp Web Inter QJ Exploring S Adobe Exploing 3 ZAHiaak PRO SOOP 3 12PM Control Buttons Beneath the device mimic are three control buttons that you can use to control the mimic and its appearance and to provide help information wm Polling Interval Click to set the rate at which the device mimic is refreshed m Poll Now Click to refresh the mimic now m Color Key Click for an explanation of the symbols and colors on the mimic s ports Table 8 describes the colors and their actions Table8 Color Key Codes Color Action Green Enabled connected Black Enabled disconnected Gray with connection Disabled connected Gray without connection Disabled disconnected Logical View Using the Web Interface 35 The Logical View presents a graphical view of the Server Load Balancer configuration This view is used to configure and monitor server load balancing cache redirection and other high level device features There are four blocks each representing an area of configuration Once configured the entities will be listed in each block and the approximate flow of data requests is indicated by the arrows You can configure the Server Load Balancer by two methods through the Navigation Tree or by clicking on the top half of the block Each colored portion of the block has a hotspot Click on a
61. numbers select option 2 and then option 2 Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U K U S A and Canada 0800 297468 0800 71429 800 17309 0800 113153 0800 917959 0800 1821502 00800 12813 1800553117 1800 9453794 1678 79489 0800 0227788 800 11376 00800 3111206 0800 831416 0800 995014 900 983125 020 795482 0800 55 3072 0800 966197 1 800 NET 3Com 1 800 638 3266 Enterprise Customers 1 800 876 3266 1 408 326 7120 not toll free 90 APPENDIX C TECHNICAL SUPPORT INDEX Numbers 3C number 15 3Com Knowledgebase Web Services 85 3Com URL 85 A adding a balance profile 58 69 adding a cache 57 adding a cache subnet 55 adding a server 64 adding a server subnet 62 adding a service 65 adding a user group 68 ARPS socket 15 assigning caches to services 57 assigning IP address ranges to user groups 68 assigning servers to services 66 B balance profile adding a balance profile 58 69 banner of the Web interface 31 C cache adding a cache 57 unassigning the cache from the service 58 cache redirection configuration example 54 cache subnet adding a cache subnet 55 caches assigning caches to services 57 assigning cachess to services 57 choosing a browser 28 downloading the Java Runtime environment 28 choosing the correct cables 20 configuration example of cache re
62. o d e f 9 a unit IP address a default route the local time the local date the number of desired time zone 1 107 options a new login password confirm new login password 6 Once you have completed the setup exit the CLI You are now ready to access the Server Load Balancer Web interface See Accessing the Web Interface on page 30 WORKING WITH THE VEB INTERFACE This chapter describes how to access and use the web interface It covers the following topics m Choosing a Browser m Accessing the Web Interface m Using the Web Interface m Setting up SNMP Management Upgrading Operating Software 28 CHAPTER 4 WORKING WITH THE WEB INTERFACE Choosing a Browser Installing the JRE for Microsoft Internet Explorer To display the Web interface correctly use one of the following Web browsers m Netscape Navigator version 4 5 or above Microsoft Internet Explorer version 5 0 or above For the browser to operate the Web interface correctly the Java Runtime Environment JRE 1 3 0 02 or higher must be installed on your management workstation A version of the JRE plug in for Windows is provided on the Server Load Balancer If you do not already have the plug in installed on your management station you will be prompted to install it See either Installing the JRE for Microsoft Internet Explorer or Installing the JRE for Netscape Navigator If you are using Microsoft Internet Explorer f
63. ocation 51 Setting Redundancy Settings 51 CONFIGURING CACHE REDIRECTION Cache Redirection Configuration Example 54 Defining a Cache Subnet 55 Non redundant Configuration 55 Redundant Configuration 56 Adding a Cache 57 Assigning Caches to Services 57 Showing Status and Deleting the Cache 58 Creating a Cache Profile Optional 58 CONFIGURING FOR LOAD BALANCING Defining a Server Subnet 62 Changing Lan Port Roles 63 Adding a Server 64 Adding a Service 65 Assigning Servers to Service 66 Showing Status and Deleting the Server 66 Assigning Server to Services Advanced 67 Adding a User Group 68 Adding IP Address Ranges to User Groups 68 Accessing Permissions 69 Creating a Balance Profile Optional 69 Modifying Security Filters Attack Mitigation 72 Modifying Security Filters 72 Modifying User Access 73 SAFETY INFORMATION Important Safety Information 76 L information de S curit Importante 78 Wichtige Sicherheitsinformationen 80 TECHNICAL SPECIFICATIONS AND PIN OUTS Server Load Balancer Specifications 83 Console Port Cable 84 PC AT Serial 84 TECHNICAL SUPPORT Online Technical Services 85 World Wide Web Site 85 3Com Knowledgebase Web Services 85 3Com FTP Site 86 Support from Your Network Supplier 86 Support from 3Com 87 Returning Products for Repair 89 INDEX 3CoM CORPORATION LIFETIME LIMITED WARRANTY REGULATORY NOTICES ABOUT THIS GUIDE This guide provides all the information you
64. oftware against failure during the warranty period No updates are provided under this warranty 3Com s sole obligation under this express warranty shall be at 3Com s option and expense to refund the purchase price paid by Customer for any defective software product or to replace any defective media with software which substantially conforms to applicable 3Com published program specifications Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials 3Com makes no warranty or representation that its software products will meet Customer s requirements or work in combination with any hardware or applications software products provided by third parties that the operation of the software products will be uninterrupted or error free or that all defects in the software products will be corrected For any third party products listed in the 3Com software product documentation or specifications as being compatible 3Com will make reasonable efforts to provide compatibility except where the non compatibility is caused by a bug or defect in the third party s product or from use of the software product not in accordance with 3Com s published specifications or user manual THIS 3COM PRODUCT MAY INCLUDE OR BE BUNDLED WITH THIRD PARTY SOFTWARE THE WARRANTY PROVISIONS OF THIS DOCUMENT DO NOT APPLY TO SUCH THIRD PARTY SOFTWARE IF A SEPARATE END USER LICENSE AGREEMENT HAS BEEN PROVIDED FOR SUCH THIR
65. om registration frontpg pl Documentation Comments Your suggestions are very important to us They will help make our documentation more useful to you Please e mail comments about this document to 3Com at pddtechpubs_comments 3com com Please include the following information when commenting m Document title m Document part number on the title page m Page number if appropriate Example m SuperStack 3 Server Load Balancer and Server Load Balancer Plus User Guide m Part Number 990 XXXX XX m Page 21 10 ABOUT THIS GUIDE gt INTRODUCING THE SERVER LOAD BALANCER This chapter contains introductory information about the SuperStack 3 Server Load Balancer and the SuperStack 3 Server Load Balancer Plus It covers summaries of the following topics m About the Server Load Balancer m Server Load Balancer Front View Detail m Server Load Balancer Rear View Detail Downloading 3Com Network Supervisor Unless otherwise noted the information in this chapter applies to both the Server Load Balancer and the Server Load Balancer Plus 12 CHAPTER 1 INTRODUCING THE SERVER LOAD BALANCER About the Server The SuperStack 3 Server Load Balancer and Server Load Balancer Plus Load Balancer provide support for connecting multiple high performance servers to a Gigabit backbone and providing server load balancing cache redirection and security functionality Summary of Table 3 summarizes the hardware features
66. on the Server Load Balancer To specify the community strings complete the following steps Click Device View on the Toolbar Select System Management Community Strings in the Navigation Tree The Community Strings window is displayed 3 The Get Access Community String field is defaulted to public Modifying a Trap Address W Select Set Access Enabled check box This enables the access to the Server Load Balancer The Set Access Community String is defaulted to private Click OK You can modify a trap address and its community string The Server Load Balancer supports the following traps Cold Start a Spanning Tree newRoot a Authentication Failure Spanning Tree topologyChange Link Up Down a RMON Event To modify a trap address complete the following steps Click Device View on the Toolbar Select System gt Management gt Trap Address in the Navigation Tree The Modify Trap Address page appears This page lists the ID IP Address and the Community String Click on 2 The line becomes highlighted Click Modify The Trap Address window appears The Trap Community String field is defaulted to public Enter 1 1 1 1 in the Trap Address field The IP address you enter should be the destination for this trap Click OK and close out of the Modify Trap Address page You have now modified the trap community string and the trap IP address Upgrading Operating Software 39 Upgrading Operat
67. onflicts of laws principles The United Nations Convention on Contracts for he International Sale of Goods is hereby excluded in its entirety from application to this Limited Warranty 3Com Corporation 5400 Bayfront Plaza P O Box 58145 Santa Clara CA 95052 8145 408 326 5000 March 13 2001 OTHER SERVICES REGISTER ONLINE FOR FREE SERVICE UPGRADE OTHER USEFUL WEB SITE SERVICES PROVIDED BY 3COM INCLUDE 3COM RESERVES THE RIGHT TO MODIFY OR CANCEL THESE SERVICES AT ANY TIME WITHOUT ADVANCE NOTICE THESE SERVICES ARE NOT AVAILABLE WHERE PROHIBITED OR RESTRICTED BY LAW THESE SERVICES APPLY TO THE ORIGINAL CUSTOMER ONLY Free Advanced Hardware Replacement for 5 Years from date of purchase Replacement will be shipped within 5 business days of 3Com receiving the request and is subject to conditions Free Software Updates will be provided for as long as the original customer owns the product until the product is discontinued by 3Com All software and firmware upgrades for this product can be downloaded hrough the 3Com Software Library at http support 3com com REGISTER ONLINE at http support 3com com within 30 days of purchase and qualify for the following discretionary services Free Next Business Day Delivery Advance Hardware Replacement for the first 12 months and after hat the level offered will be five business days for years 2 3 4 and 5 of the life of the product subject to conditions To check that your pro
68. or the scenario presented for configuring non redundant server load balancing These steps explained in detail in this chapter are m Server Load Balancing Configuration Example m Configuring for Non redundant Server Load Balancing Before you complete the steps explained in this chapter you must have completed the assigning IP address setup described in Chapter 3 Setting Up for Management 42 CHAPTER 5 CONFIGURING NON REDUNDANT SERVER LOAD BALANCING Server Load Balancing Configuration Example Figure 11 displays a network configuration of two primary servers Server A and Server B The servers have been set up to host a Web site to the public Server A is assumed to be a powerful machine that has approximately double the performance of Server B Figure 11 Server Load Balancing Configuration Example Subnet 192 168 2 X Server A Server Load Balancer 192 168 2 1 VIP 10 20 30 117 Port 80 IF 10 20 30 116 Server B IF5 192 168 2 254 19216822 Port 8080 Configuring for Non redundant Server Load Balancing 43 Configuring for Non redundant Server Load Balancing You must complete the steps in the Getting Started wizard to configure the Server Load Balancer for non redundant server load balancing To setup up a non redundant configuration complete the following steps Click Device View on the Toolbar Select System Getting Started in the Navigation Tree The first Getting Started page is displayed Click
69. or your browser and do not have the Java Runtime Environment installed on your management station the Security Warning window appears Click Yes and follow the on line instructions Figure 4 Security Warning Window Security Warning x Do you want to install and run Java 2 Runtime Environment signed on 1 30 01 3 14 PM and distributed by Sun Microsystems Inc Publisher authenticity verified by VeriSign Commercial Software Publishers CA Caution Sun Microsystems Inc asserts that this content is safe You should only install view this content if you trust Sun Microsystems Inc to make that assertion Always trust content from Sun Microsystems Inc 4 More Info Choosing a Browser 29 Installing the JRE for If you are using Netscape Navigator for your browser and do not have the Netscape Navigator Java Runtime Environment installed on your management station the Web Interface pages appears Figure 5 Web Interface Netscape Web Interface Netscape of x Edit View Go Communicator Help 3 2 3 w Back Forward Reload Home Search Netscape Fir Security Shop Stop 7 a Bookmarks A Location PAIE ar SUPER 3com STACK Summary EITTXTTHETTTICRBENNN System Summary Serial Number Click here to get the plugin To install the plug in complete the following steps Click on Click he
70. ownloading new operating software The Server Load Balancer is not receiving power Packets are being transmitted received on the port No packets are being transmitted received on the port Off 10 100BASE T Port Status LEDs Packet Yellow Off Status Green Green flashing A link is present and the port is enabled The port is disabled No link is present Packets are being transmitted received on the port No packets are being transmitted received on the port Off 1000BASE SX Port Status LEDs Packet Yellow Off Status Green Green flashing Off A high speed 1000 Mbps link is present and the port is enabled A high speed 1000 Mbps port is disabled No link is present Server Load Balancer Rear View Detail 15 Server Load Figure 2 Server Load Balancer rear view Balancer Rear View Detail Unit Information Label Laser warning and Supply warning Label Power Socket Redundant Power System Socket Unit Information The labels on the rear of the unit show the following Label The 3Com product name of the Server Load Balancer m The 3Com 3C number of the Server Load Balancer m The unique MAC address Ethernet address of the Server Load Balancer m The serial number of the Server Load Balancer You may need this information for fault reporting purposes Power Socket The Server Load Balancer automatically adjusts its power setting to any supply voltage in the range 90 24
71. pe n SAFETY INFORMATION You must read the following safety information before carrying out any installation or removal of components or any maintenance procedures on the Server Load Balancer or the Server Load Balancer Plus WARNING Warnings contain directions that you must follow for your personal safety Follow all directions carefully You must read the following safety information carefully before you install or remove the unit AVERTISSEMENT Les avertissements pr sentent des consignes que vous devez respecter pour garantir votre s curit personnelle Vous devez respecter attentivement toutes les consignes Nous vous demandons de lire attentivement les consignes suivantes de s curit avant d installer ou de retirer l appareil WARNHINWEIS Warnhinweise enthalten Anweisungen die Sie zu Ihrer eigenen Sicherheit befolgen m ssen Alle Anweisungen sind sorgf ltig zu befolgen Sie m ssen die folgenden Sicherheitsinformationen sorgf ltig durchlesen bevor Sie das Ger t installieren oder ausbauen 76 APPENDIX A SAFETY INFORMATION Important Safety Information Installation and removal of the unit must be carried out by qualified personnel only If installing the Server Load Balancer in a stack with SuperStack 3 units that are narrower than the Server Load Balancer the Server Load Balancer unit must be installed below the narrower units Connect the unit to an earthed power supply to ensure compliance with sa
72. person to contact about the Server Load Balancer such as Dave in the Contact field 5 Enter the physical location of the Server Load Balancer such as Lab in the Location field Click Next 6 Select Redundant and click Next The Getting Started Peer page displays Click Next 50 CHAPTER 6 CONFIGURING REDUNDANT SERVER LOAD BALANCING gt 10 11 12 13 14 15 16 Select the serial number of the peer device In this case the peer device is the second Server Load Balancer Click Next The Getting Started IP Settings page appears If you change these settings you may lose IP connectivity to the Web interface upon completion of this wizard If this occurs you will need to reconnect to the Server Load Balancer using the new IP address The IP Address Subnet Mask and Default Router fields are completed These is the information you assigned to the Server Load Balancer during the CLI setup Enter 10 20 30 56 in the Device B IP Address field This is the IP address assigned to the second Server Load Balancer Click Next The Getting Started Network Address Translation page appears If you are using private IP subnets for your server or cache subnets and want the servers or caches to be able to initiate connections to the outside check NAT Enabled for Server and Cache Subnets If NAT is enabled packets initiated by the servers and the caches need to be given an IP address on the primary IP subnet This address
73. presented with a list of applications grouped by application type Highlight HTTP and click the Next 8 Click Define new virtual IP address and enter 10 20 30 117 in the 10 11 12 13 Virtual IP Address field The VIP address has to be in the same subnet as the Server Load Balancer Enter a descriptive name such as HTTP Service in the Name field Click Continue with Advanced Settings From the Balance Profile drop down list box select Profile1 If you have not created a balance profile the drop down list box only provides a default See Creating a Balance Profile Optional on page 69 Skip the Add Service Port Override page Click Next The port override allows you to change the destination port that TCP or UDP requests will come into Click Finish This completes the set up of the service The service name you added Web now appears in the lower portion of the block Click on a the block to open a pop up menu that contains operations you can use to Add Refresh Delete Modify or Show Status of the service 66 CHAPTER 8 CONFIGURING FOR LOAD BALANCING Assigning Servers to Service Showing Status and Deleting the Server The Assign Servers to Services page is where the servers are assigned to the server load balancing service To assign a server to a service complete the following steps Click Server Assignments The Assign servers to services page appears Click on the cell next to Server A T
74. ration Health Checks page appears This page supplies default settings which can be modified for your network for the following fields a Period This sets the number of seconds that elapse between health checks Retries field This sets the number of retries a health check is attempted Timeout This sets the number of seconds the Server Load Balancer waits for a reply before the health check is timed out 10 Click Next 11 Click Finish Your cache profile has been created CONFIGURING FOR LOAD BALANCING In this chapter the instructions for configuring User Groups Services and Servers on the Server Load Balancer are explained It also explains how to configure for cache redireciton The information presented in this chapter is for example purposes only The information you enter in the fields is specific to your Server Load Balancer The following is a list of steps for the scenario presented for configuring server load balancing and cache redirection on the Server Load Balancer These steps explained in detail in this chapter are m Defining a Server Subnet m Changing Lan Port Roles m Adding a Server m Adding a Service m Assigning Servers to Service m Adding a User Group m Creating a Balance Profile Optional m Modifying Security Filters Attack Mitigation Before you complete the steps explained in this chapter you must have completed the preliminary setup described in Chapter 3 Setting Up for Management
75. re to get the plug in 2 The Plug in Not Loaded window appears Click Get the plug in The Plug in Install for Netscape page appears 3 Click Download Plug in The Save As window appears 4 Save the file to your Desktop 5 From your desktop double click on 3re1 3 0 The Java Runtime Environment is now installed 30 CHAPTER 4 WORKING WITH THE WEB INTERFACE Accessing the Web Interface Exiting the Web interface To access the Web interface over the network complete the following Steps Ensure that your network is correctly set up for management using the Web interface and open your Web browser In the Location field of the browser enter the URL of the Server Load Balancer This must be in the format http nnn nnn nnn nnn where nnn nnn nnn nnn is the IP address you assigned in Assigning an IP Address on page 24 When the browser has located the Server Load Balancer the Enter Network Password window appears Enter admin in the User Name field The Server Load Balancer provides two levels of access admin and monitor The password field contains a blank default login password The two levels of access are admin the user can access and change all manageable parameters monitor the user can view all manageable parameters but cannot change any parameters The password field contains a blank default login password Hit Return CAUTION The Server Load Balancer does not provide a wa
76. ree buttons that can be used to assign permissions and server and cache assignments Table 9 describes the buttons and their actions Table 9 Buttons and their actions Button Act ion Permissions Displays a matrix of user groups versus virtual services displaying access rights of deny or allow Server Assignments Displays a matrix of virtual services versus physical servers This display shows which servers are used for each virtual service and the operational status of the mappings Cache Assignments Displays a matrix of cache servers This display shows which cache server are used for each virtual service and the ope rational status of the mappings Help View Using the Web Interface 37 The Help view contains important information on Web Browser and PC platform combinations that are recommended when accessing the Web interface The Help view also supplies minimal online user documentation If your management workstation has access to the World Wide Web clicking these links displays information from the 3Com Web site in a second browser window Figure 10 Help View E Web Interface Microsoft Internet Explorer BEES Ele Favoites Toole Help Links Customize Links 7 Free Hotmail Windows Windows Media PA The PointCast Business Network 2 0 D 2 Bak Foard Stop Retesh Home Search Favorites Hitoy Mal 5 Pint Edit Discuss
77. ry of Software Features 12 Server Load Balancer Front View Detail 13 Ports 13 Console Port 13 LEDs 14 Server Load Balancer Rear View Detail 15 Unit Information Label 15 Power Socket 15 Advanced Redundant Power System Socket 15 Downloading 3Com Network Supervisor 16 INSTALLING THE SERVER LOAD BALANCER Package Contents 18 Choosing a Suitable Site 18 Rack mounting 19 Choosing the Correct Cables 20 Placing Units On Top of Each Other 20 The Power up Sequence 21 Powering up 21 Solving Problems Indicated by LEDs 22 SETTING UP FOR MANAGEMENT Methods of Managing the Server Load Balancer 24 Assigning an IP Address 24 WORKING WITH THE WEB INTERFACE Choosing a Browser 28 Installing the JRE for Microsoft Internet Explorer 28 Installing the JRE for Netscape Navigator 29 Accessing the Web Interface 30 Exiting the Web interface 30 Using the Web Interface 31 Summary View 32 Device View 33 Logical View 35 Help View 37 Setting up SNMP Management 38 Specifying Community Strings 38 Modifying a Trap Address 38 Upgrading Operating Software 39 CONFIGURING NON REDUNDANT SERVER LOAD BALANCING Server Load Balancing Configuration Example 42 Configuring for Non redundant Server Load Balancing 43 CONFIGURING REDUNDANT SERVER LOAD BALANCING Redundant Server Load Balancing Configuration Example 46 Configuring for Active Passive Redundancy 47 Configuring for Active Active Redundancy 49 Active Active Device All
78. ssword lt password gt In this example you must supply a password for lt password gt The words enter and type When you see the word enter in this guide you must type something and then press Return or Enter Do not press Return or Enter when an instruction simply says type Keyboard key names If you must press two or more keys simultaneously the key names are linked with a plus sign Example Press Ctrl Alt Del Words in italics Italics are used to Emphasize a point a Denote a new term at the place where it is defined in the text Identify menu names menu commands and software button names Examples From the Help menu select Contents Click OK Related Documentation 9 Related Documentation In addition to this guide the documentation set includes the following m Release Notes PDF format These notes provide information about the current software release including new features modifications and known problems These release notes are available in PDF format and are accessible from the 3Com web site There are other publications you may find useful such as m Documentation accompanying the Advanced Redundant Power System m Documentation accompanying the 3Com Network Supervisor Product Registration You can register your SuperStack 3 Server Load Balancer on the 3Com Web site to receive up to date information on your product http support 3com c
79. tally friendly in all operations To uphold our policy we are committed to Establishing environmental performance standards that comply with national legislation and regulations Conserving energy materials and natural resources in all operations Reducing the waste generated by all operations Ensuring that all waste conforms to recognized environmental standards Maximizing the recyclable and reusable content of all products Ensuring that all products can be recycled reused and disposed of safely Ensuring that all products are labelled according to recognized environmental standards Improving our environmental record on a continual basis End of Life Statement 3Com processes allow for the recovery reclamation and safe disposal of all end of life electronic components Regulated Materials Statement 3Com products do not contain any hazardous or ozone depleting material Environmental Statement about the Documentation The documentation for this product is printed on paper that comes from sustainable managed forests it is fully biodegradable and recyclable and is completely chlorine free The varnish is environmentally friendly and the inks are vegetable based with a low heavy metal content CONTENTS ABOUT THIS GUIDE Conventions 8 Related Documentation 9 Product Registration 9 Documentation Comments 9 INTRODUCING THE SERVER LOAD BALANCER About the Server Load Balancer 12 Summary of Hardware Features 12 Summa
80. that are supported in both Hardware Features models of the Server Load Balancer Table 3 Hardware Features Server Load Balancer Feature Server Load Balancer Plus Memory m 64 MB for Server Load Balancer Plus m 32 MB for Server Load Balancer 12 10 100 LAN Ports Supported 2 Gigabit Ethernet Ports Supported SuperStack 3 Architecture Connects to a SuperStack 3 Advanced Redundant Power System ARPS wm Installs in a 19 inch rack or stand alone mounting Summary of Software Table 4 summarizes the software features that are supported in both Features models of the Server Load Balancer Table 4 Software Features Server Load Balancer Feature Server Load Balancer Plus Algorithms Round Robin a Weighted Round Robin m Least Connections Quickest Last Response Quickest Average Response m Weighted Percentage Port Trunking Etherchannel Supported Up to 256 servers Supported TCP IP Sessions 16 000 for the Server Load Balancer 128 000 for the Server Load Balancer Plus Persistence Modes m Source IP m Secure Socket Layer SSL Session ID a Cookie Server Load Balancer Front View Detail 13 Table 4 Software Features Server Load Balancer Feature Server Load Balancer Plus Cache Redirection Transparent mode Proxy mode DoS Protection Supported Redundant Failover Modes m Primary Secondary m Active Active Management Web interface command line interface and SNMP supported Server Load Figure 1 S
81. the block to open a pop up menu that contains operations you can use to configure the Server Load Balancer While the Logical View allows you to configure using the graphical user interface there are some features that can only be configured from the Navigation Tree Figure 9 Logical View Eie View p M lloc caesos Ca toss catus caasa Ta Te NE e 9 a w d p 38 9 32 Back Fae Stop Refresh Search Favoites History Mal See Pit Ed Discuss Realcom Messenger Address hitp 710 20 30 116 index_Wv him x Rod FX SUPER acom SLB STACK EE user Groups services Server Load Balancing Allusers 5 Setup Services CJ Servers 9 00 Caches H Statistics 9 C3 Balance Profiles i C Cache Profiles IE Active Active Device E Redundancy E User Groups I Add 1 user group No service defined No server defined Click on Services to add a Servers to add a E Delete Click on Caches to add a cache E Summary E Service Access Per ec Ranges E C3 Libra Navigation Tree Block p Pop Up Menu Buttons Summary 1 Internet Stat Hilak Capt JInbor Mir web Inter 2 Exploring S Frame Gy Escloino 3 ZAHilaak PRO 20 36 CHAPTER 4 WORKING WITH THE WEB INTERFACE In addition to the blocks there are th
82. ther available health checks are m Ping Server Load Balancer periodically pings each server using ICMP Echo The number of retries are configurable If successive ping attempts fail the server is marked as down and is removed from the pool of available servers m Port Server Load Balancer periodically attempts to establish a connection with each server using the same protocol TCP or UDP and port number as the server load balancing service uses If any connection attempt fails the server is marked as down and is removed from the pool of available servers for the service m HTTP URI You can enter URI that the Server Load Balancer periodically requests from each server A server response is considered successful if the return code of response is within the range of 200 299 If any attempts fail the server is marked as down and is removed from the pool of available servers for the service This performs a more thorough check of the status of the Web servers None No health checking is performed All Servers are assumed to be operational 9 The Balance Profile Configuration Health Checks page appears This page supplies default settings which can be modified for your network for the following fields a Period This sets the number of seconds that elapse between health checks Retries field This sets the number of retries in a health check period Timeout This sets the number of seconds the Ser
83. ts IP address To define a server complete the following steps Click Logical View on the Toolbar Point to the Server window border and left click the mouse button In the pop up list click Add The first Configure Server page appears If you have not defined a server subnet you will be prompted with a Warning message asking if you wish to define the server subnet now If you click Yes follow the online instructions For information on how to configure a Server Subnet see Defining a Server Subnet on page 62 Enter 192 168 2 1in the P Address field and click Add Enter Server Ain the Name field Repeat steps 4 and 5 for each server you are adding Click Done The servers are now known to the Server Load Balancer but are not associated with a service Adding a Service 65 Adding a Service a vv WN N This is where the load balancing service is defined along with several attributes of the service Remember that the service is associated with an IP address the VIP and a protocol port combination the application To define a service complete the following steps Click Logical View on the Toolbar Point to the Services window border and left click the mouse button In the pop up list click Add The first wizard page appears Click Next The Add Service Application Definition page appears Enter a descriptive name such as Web in the Name field Click Choose application from application library You are
84. ttre l appareil hors circuit qu en d branchant son cordon lectrique au niveau de cette prise L information de S curit Importante 79 L appareil fonctionne une tension extr mement basse de s curit qui est conforme la norme CEI 950 Ces conditions ne sont maintenues que si l quipement auquel il est raccord fonctionne dans les m mes conditions France et P rou uniquement Ce groupe ne peut pas tre aliment par un dispositif imp dance la terre Si vos alimentations sont du type imp dance la terre ce groupe doit tre aliment par une tension de 230 V 2 P T par le biais d un transformateur d isolement rapport 1 1 avec un point secondaire de connexion portant l appellation Neutre et avec raccordement direct la terre masse Le commutateur doit tre utilis en rack uniquement s il est mont sur des rails glissi res une tag re ou un plateau pour supporter son poids Les kits de montage en rack ne suffisent pas eux seuls pour supporter le poids du commutateur Si vous connectez le commutateur Server Load Balancer un moduled alimentation de Type 3 consultez les informations de s curit qui se trouvent dans le guide del utilisateur du module d alimentation de type 3 AVERTISSEMENT Ports pour fibres optiques s curit sur le plan optique DISPOSITIF LASER DE CLASSE I Ne regardez jamais le laser tant qu il est sous tension Ne regardez jamais directement le port TX Tra
85. ubject to the following All technical data and computer software are commercial in nature and developed solely at private expense Software is delivered as Commercial Computer Software as defined in DFARS 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a and as such is provided with only such rights as are provided in 3Com s standard commercial license for the Software Technical data is provided with limited rights only as provided in DFAR 252 227 7015 Nov 1995 or FAR 52 227 14 une 1987 whichever is applicable You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in or delivered to you in conjunction with this User Guide Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com and SuperStack are registered trademarks of 3Com Corporation The 3Com logo is a trademark of 3Com Corporation Microsoft MS DOS Windows and Windows NT are registered trademarks of Microsoft Corporation Novell and NetWare are registered trademarks of Novell Inc Netscape Navigator is a registered trademark of Netscape Communications Javascript is a trademark of Sun Microsystems All other company and product names may be trademarks of the respective companies with which they are associated ENVIRONMENTAL STATEMENT It is the policy of 3Com Corporation to be environmen
86. ubsidiary serving your country or write 3Com Corporation Customer Support Information 5400 Bayfront Plaza P O Box 58145 Santa Clara CA 95052 8145 OBTAINING WARRANTY SERVICE Customer must contact a 3Com Corporate Service Center or an Authorized 3Com Service Center within the applicable warranty period to obtain warranty service authorization Dated proof of purchase from 3Com or its authorized reseller may be required A User Service Order USO Return Material Authorization RMA or Service Repair Order SRO number will be issued This number must be marked on the outside of the package The product must be packaged appropriately for safe shipment and sent prepaid It is recommended that returned products be insured or sent by a method that provides for tracking of the package Responsibility for loss or damage does not transfer to 3Com until the returned item is received by 3Com 3Com will make commercially reasonable efforts to ship the repaired or replaced item to Customer at 3Com s expense not later than thirty 30 days after 3Com receives the defective product 3Com will retain risk of loss or damage until the item is delivered to Customer 3Com shall not be responsible for any software firmware information or memory data of Customer contained in stored on or integrated with any products returned to 3Com for repair whether under warranty or not WARRANTIES EXCLUSIVE IF THIS 3COM PRODUCT DOES NOT OPERATE AS WARRA
87. umber serial number of the Server Load Balancer 15 size 83 unit information label 15 weight 83 server load balancing configuration example 42 server subnet adding a server subnet 62 service adding a service 65 showing the status of the server 66 socket ARPS 15 software features summary 12 specifications system 83 summary view Web interface 32 system specifications 83 T technical support 3Com Knowledgebase Web Services 85 3Com URL 85 network suppliers 86 product repair 89 U unassigning the cache from the service 58 unassigning the server from the service 66 unit hotspots 33 unit information label 15 URL 85 user group adding a user group 68 assigning IP address ranges 68 Web interface accessing 30 banner 31 device view 33 34 exiting 30 help view 37 information area 31 logical view 35 navigation tree 31 INDEX 93 summary view 32 World Wide Web WWW 85 94 INDEX 3Com Corporation LIFETIME LIMITED WARRANTY The 3Com Corporation Limited Warranty and the Other Services described in this document supersede any such information that may be contained within your product user documentation This warranty applies to customers located in the United States Australia Canada except Quebec Ireland New Zealand U K and other English language countries and countries for which a translation into the local language is not provided SUPERSTACK 3 SERVER LOAD BALANCER 3C16120 SUPE
88. ver Load Balancer waits for a health check reply from a server 10 Click Next 11 Click Finish Your balance profile has been created 72 CHAPTER 8 CONFIGURING FOR LOAD BALANCING Modifying Security Filters Attack Mitigation The Server Load Balancer provides Attack Mitigation features that help to prevent Denial of Service and Distributed Denial of Service attacks When enabled the attack mitigation features cause the Server Load Balancer to recognize and filter out security attacks Table 12 describes the available filters and their descriptions Table 12 Filters and Descriptions Filter Description Smurf Filter Filter ICMP packets sent to broadcast or multicast addresses and unsolicited ICMP ECHO replies FTP Restricted Port Filter IP Source Route Filter LAND Attack Fraggle Attack Filter FTP Bounce Filter IP Options Filter ter out a range of FTP data port requests ter packets which contain the IP source route option ter packets which have matching destination and ource IP addresses ter UDP ECHO requests sent to a broadcast or ulticast address and unsolicited UDP packets from e UDP ECHO port ter FTP traffic when the port command issued ontains an address that differs from the requesting Ost QT SEL ilter packets that contain any IP options for example Record Route and Time Stamp in the packet header You can filter packets which have packet headers containing on
89. ware and Documentation may be copied only as essential for backup or archive purposes in support of your use of the Software as permitted hereunder Each copy of the Software and Documentation must contain 3Com s and its licensors proprietary rights and copyright notices in the same form as on the original You agree not to remove or deface any portion of any legend provided on any licensed program or documentation delivered to you under this Agreement ASSIGNMENT NO REVERSE ENGINEERING EXPORT RESTRICTIONS TRADE SECRETS TERM AND TERMINATION SEVERABILITY ENTIRE AGREEMENT You may transfer the Software Documentation and the licenses granted herein to another party in the same country in which you obtained the Software and Documentation if the other party agrees in writing to accept and be bound by the terms and conditions of this Agreement If you transfer the Software and Documentation you must at the same time either transfer all copies of the Software and Documentation to he party or you must destroy any copies not transferred Except as set forth above you may not assign or ransfer your rights under this Agreement Modification reverse engineering reverse compiling or disassembly of the Software is expressly prohibited However if you are a European Union EU resident information necessary to achieve interoperability of he Software with other programs within the meaning of the EU Directive on the Legal Protection of Co
90. y to recover a lost password If you choose to assign a new password it is suggested you keep note of it in a safe place If you forget your password you will be locked out of the unit If you change the password during the CLI Server Load Balancer setup this is the password you should use and not the blank default login password For Technical Support see Appendix C The main Web interface is displayed See Using the Web Interface on page 31 You can exit the Web interface at any time to do this close your Web browser For security reasons you should always close your Web browser after a management session Using the Web Interface 31 Using the Web Interface The Web interface is made up of three areas m The Banner This is always displayed at the top of the browser window It displays the name of the current Server Load Balancer and contains several external links that allow you to access information outside of the Web interface The Navigation Tree This is always displayed down the left side of the browser window It contains management folders that display dialog boxes in the information area The Information Area This is always displayed in the center of the browser window It contains the various dialog boxes that allow you to manage the Server Load Balancer Figure 6 Parts of the main Web interface Banner Navigation Tree Ee E Help E SETS El L

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