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Summary of Contents for 3Com SERVER LOAD BALANCER 3C16120
- Page 1 SuperStack Server Load Balancer Server Load Balancer Plus User Guide 3C16120 3C16121 http://www.3com.com/ Part No. 990-0049-00 Published June 2001 ®...
- Page 2 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 environmentally-friendly in all operations. To uphold our policy, we are committed to: Establishing environmental performance standards that comply with national legislation and regulations.
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Page 3: Table Of Contents
Ports Console Port LEDs Server Load Balancer — Rear View Detail Unit Information Label Power Socket Advanced Redundant Power System Socket Downloading 3Com Network Supervisor NSTALLING THE ERVER Package Contents Choosing a Suitable Site Rack-mounting Choosing the Correct Cables Placing Units On Top of Each Other... - Page 4 ETTING P FOR Methods of Managing the Server Load Balancer Assigning an IP Address ORKING ITH THE Choosing a Browser Installing the JRE for Microsoft Internet Explorer Installing the JRE for Netscape Navigator Accessing the Web Interface Exiting the Web interface Using the Web Interface Summary View Device View...
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Page 5: Technical Specifications And Pin -Outs
Redundant Configuration Adding a Cache Assigning Caches to Services Showing Status and Deleting the Cache Creating a Cache Profile (Optional) ONFIGURING FOR Defining a Server Subnet Changing Lan Port Roles Adding a Server Adding a Service Assigning Servers to Service Showing Status and Deleting the Server Assigning Server to Services (Advanced) Adding a User Group... -
Page 6: Regulatory Notices
3Com Knowledgebase Web Services 3Com FTP Site Support from Your Network Supplier Support from 3Com Returning Products for Repair NDEX ORPORATION EGULATORY OTICES IFETIME IMITED ARRANTY... -
Page 7: About This Guide
This guide provides all the information you 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. -
Page 8: Conventions
BOUT UIDE Conventions Table 1 and Table 2 list conventions that are used throughout this guide. Table 1 Notice Icons Table 2 Text Conventions Convention boldface Screen displays This typeface represents information as it appears on the Syntax The words “enter” and “type”... -
Page 9: Related Documentation
In addition to this guide, the documentation set includes the following: Documentation There are other publications you may find useful, such as: Product You can register your SuperStack 3 Server Load Balancer on the 3Com Registration Web site to receive up-to-date information on your product: http://support.3com.com/registration/frontpg.pl Documentation Your suggestions are very important to us. - Page 10 BOUT UIDE...
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Page 11: Introducing The Server Load Balancer
About the Server Load Balancer Server Load Balancer — Front View Detail 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. -
Page 12: About The Server Load Balancer
1: I HAPTER NTRODUCING THE About the Server The SuperStack 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 that are supported in both Hardware Features models of the Server Load Balancer. -
Page 13: Server Load Balancer - Front View Detail
Table 4 Software Features Server Load Figure 1 Server Load Balancer — front view Balancer — Front View Detail 1 0B AS E- T/1 0 0 B A SE-TX Por ts Ports The Server Load Balancer and Server Load Balancer Plus have twelve dedicated 10BASE-T/100BASE-TX ports and two 1000BASE-SX ports. -
Page 14: Leds
1: I HAPTER NTRODUCING THE 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 Power/Self Test LED Power LED 10/100BASE-T Port Status LEDs Packet Status 1000BASE-SX Port Status LEDs... -
Page 15: Server Load Balancer - Rear View Detail
Type 3 Y-Cable (part number 3C16077). Server Load Balancer — Rear View Detail The 3Com product name of the Server Load Balancer The 3Com 3C number of the Server Load Balancer The unique MAC address (Ethernet address) of the Server Load... -
Page 16: Chapter 1: Introducing The Server Load Balancer
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 You can download 3Com Network Supervisor Version 3.0 from the Network Supervisor following Web address: http://www.3com.com/tns Network Supervisor is a powerful, intuitive network management application for small to medium enterprise networks. -
Page 17: Installing The Server Load Balancer
NSTALLING THE ALANCER 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. -
Page 18: Package Contents
Water or moisture cannot enter the case of the Server Load Balancer. 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. -
Page 19: Rack-Mounting
Rack-mounting 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. -
Page 20: Choosing The Correct Cables
End Station (such as a server or a PC) Cables are not supplied by 3Com. 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 on top of the other, you must use the self-adhesive rubber feet supplied. -
Page 21: The Power-Up Sequence
The Power-up The following sections describe how to get your Server Load Balancer Sequence 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. -
Page 22: Solving Problems Indicated By Leds
2: I HAPTER NSTALLING THE Solving Problems Table 7 contains a list of problems and suggested solutions if the LEDs Indicated by LEDs indicate a problem. For Technical Support information, see Appendix C. Table 7 Problems Indicated by LEDs ERVER ALANCER Problem Suggested Solution... -
Page 23: Setting U P For Management
ETTING 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: Methods of Managing the Server Load Balancer Assigning an IP Address P FOR ANAGEMENT... -
Page 24: Methods Of Managing The Server Load Balancer
IP Address. 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. - Page 25 3 Hit <Return>. At the login: prompt, enter admin. 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 —...
- Page 26 3: S HAPTER ETTING P FOR 5 You are prompted to enter the following information: a a unit IP address b a default route c the local time d the local date e the number of desired time zone (1-107 options) f a new login password g confirm new login password 6 Once you have completed the setup, exit the CLI.
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Page 27: Working With The Web Interface
NTERFACE This chapter describes how to access and use the web interface. It covers the following topics: Choosing a Browser Accessing the Web Interface Using the Web Interface Setting up SNMP Management Upgrading Operating Software ORKING ITH THE... -
Page 28: Choosing A Browser
4: W HAPTER ORKING ITH THE Choosing a Browser To display the Web interface correctly, use one of the following Web browsers: For the browser to operate the Web interface correctly, the Java Runtime Environment (JRE) V1.3.0_02 or higher must be installed on your management workstation. -
Page 29: Installing The Jre For Netscape Navigator
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 To install the plug-in, complete the following steps: 1 Click on Click here to get the plug-in. -
Page 30: Accessing The Web Interface
4: W HAPTER ORKING ITH THE Accessing the Web To access the Web interface over the network, complete the following Interface steps: 1 Ensure that your network is correctly set up for management using the Web interface and open your Web browser. 2 In the Location field of the browser, enter the URL of the Server Load Balancer. -
Page 31: Using The Web Interface
Using the Web The Web interface is made up of three areas: Interface Figure 6 Parts of the main Web interface Banner Navigation Tree 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. -
Page 32: Summary View
4: W HAPTER ORKING ITH THE 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. -
Page 33: Device View
Device View 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. -
Page 34: Control Buttons
4: W HAPTER ORKING ITH THE Figure 8 Device View 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: Table 8 Color Key Codes Color Green Black... -
Page 35: Logical View
Using the Web Interface Logical View 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. - Page 36 4: W HAPTER ORKING ITH THE In addition to the blocks, there are three 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 Permissions Server Assignments...
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Page 37: Help View
The Help view also supplies minimal online user documentation. f 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... -
Page 38: Setting Up Snmp Management
You can manage a Server Load Balancer using any Network Manager Management running the Simple Network Management Protocol (SNMP), such as 3Com Network Supervisor software. Specifying You can specify SNMP community strings for the users defined on the Community Strings Server Load Balancer. -
Page 39: Upgrading Operating Software
Upgrading You can upgrade the management software using the Software Upgrade Operating Software 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: 1 Click Device View on the Toolbar. - Page 40 4: W HAPTER ORKING ITH THE NTERFACE...
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Page 41: Configuring Non - Redundant Server Load Balancing
ONFIGURING ERVER 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 for the scenario presented for configuring non-redundant server load balancing. -
Page 42: Server Load Balancing Configuration Example
5: C HAPTER ONFIGURING Server Load Figure 11 displays a network configuration of two primary servers, Server Balancing A and Server B. The servers have been set up to host a Web site to the Configuration public. Server A is assumed to be a powerful machine that has Example approximately double the performance of Server B. -
Page 43: Configuring For Non-Redundant Server Load Balancing
Configuring for You must complete the steps in the Getting Started wizard to configure Non-redundant the Server Load Balancer for non-redundant server load balancing. Server Load To setup up a non-redundant configuration, complete the following Balancing steps: 1 Click Device View on the Toolbar. 2 Select System >... - Page 44 5: C HAPTER ONFIGURING 3 Enter a descriptive name, such as Non-redundant SLB, in the Name field. 4 Enter the name of the person to contact about the Server Load Balancer, such as Chris, in the Contact field. 5 Enter the physical location of the Server Load Balancer, such as Lab, in the Location field.
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Page 45: Configuring Redundant
ONFIGURING ERVER 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. -
Page 46: Redundant Server Load Balancing Configuration Example
6: C HAPTER ONFIGURING Redundant Server Figure 12 shows how two Server Load Balancers and three servers form a Load Balancing 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. -
Page 47: Configuring For Active-Passive Redundancy
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. -
Page 48: Chapter 6: Configuring Redundant Server Load Balancing
6: C HAPTER ONFIGURING 7 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. 8 Click Next. -
Page 49: Configuring For Active-Active Redundancy
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. - Page 50 6: C HAPTER ONFIGURING 7 Select the serial number of the peer device. In this case, the peer device is the second Server Load Balancer. 8 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.
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Page 51: Active-Active Device Allocation
Active-Active Device Active-Active device allocation can only be performed when the Server Allocation 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. - Page 52 6: C HAPTER ONFIGURING EDUNDANT ERVER ALANCING...
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Page 53: Configuring Cache Redirection
ONFIGURING EDIRECTION 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 steps for the scenario presented for configuring cache redirection on the Server Load Balancer. -
Page 54: Cache Redirection Configuration Example
This example displays how cache redirection works. Example A request is entered into the browser, for example, http://www.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. -
Page 55: Defining A Cache Subnet
Defining a Cache Before you can add a cache, you need to have defined at least one cache Subnet subnet. The cache subnet cannot be in the same subnet as the server. Non-redundant The following steps describe how to create a cache subnet if you are Configuration configured for non-redundant server load balancing. -
Page 56: Redundant Configuration
7: C HAPTER ONFIGURING Redundant The following steps describe how to create a cache subnet if you are Configuration 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: 1 Click Logical View on the Toolbar. -
Page 57: Adding A Cache
Adding a Cache This is where the cache service is defined, along with several attributes of the service. 1 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. -
Page 58: Showing Status And Deleting The Cache
7: C HAPTER ONFIGURING Showing Status and To view the status of the cache assignments, complete the following Deleting the Cache steps: 1 Click Cache Assignments. The Assign Caches to Services page appears 2 Click the cell for Cache1. A pop-up menu with the option to Show status or Delete appears. - Page 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 Destination Round Robin Weighted Round Robin Least Connections Weighted Least Connections 7 Leave Sticky Mode field set to Off. 8 The default health check is Ping, click Next.
- Page 60 7: C HAPTER ONFIGURING 9 The Cache Profile Configuration - Health Checks page appears. This page supplies default settings, which can be modified for your network, for the following fields: 10 Click Next. 11 Click Finish.Your cache profile has been created. ACHE EDIRECTION TCP Port —...
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Page 61: Configuring For Load Balancing
ONFIGURING FOR ALANCING 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. -
Page 62: Defining A Server Subnet
8: C HAPTER ONFIGURING FOR Defining a Server Before you can add a server, you need to have defined at least one server Subnet 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: 1 Click Logical View on the Toolbar. -
Page 63: Changing Lan Port Roles
Changing Lan Port When configuring server load balancing, the physical ports that carry Roles client or server traffic can be specified. Each port is assigned to one of the following: To change Lan port roles, complete the following steps: 1 Click Logical View on the Toolbar. 2 Select Server Load Balancing >... -
Page 64: Adding A Server
8: C HAPTER ONFIGURING FOR Adding a Server 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 its IP address. To define a server, complete the following steps: 1 Click Logical View on the Toolbar. -
Page 65: Adding A Service
Adding a Service 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: 1 Click Logical View on the Toolbar. -
Page 66: Assigning Servers To Service
8: C HAPTER ONFIGURING FOR Assigning Servers The Assign Servers to Services page is where the servers are assigned to to Service the server load balancing service. To assign a server to a service, complete the following steps: 1 Click Server Assignments. The Assign servers to services page appears. 2 Click on the cell next to Server A. -
Page 67: Assigning Server To Services (Advanced)
Assigning Server to In addition to performing Network Address Translation, the Server Load Services (Advanced) 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. -
Page 68: Adding A User Group
8: C HAPTER ONFIGURING FOR Adding a User You can define a user group and control that group’s access to the load Group 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. -
Page 69: Accessing Permissions
Accessing You can change user access on specific servers using the Permissions Permissions button. You are able to allow or deny access for assigned user groups. To assign permissions, complete the following steps: 1 Click Permissions. 2 Click on the cell next to Server A. Depending on the access already set, you are prompted with either Deny Access or Allow Access. - Page 70 8: C HAPTER ONFIGURING FOR 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 Round Robin Weighted Round Robin Least Connections Weighted Least Connections Quickest Last Response Quickest Average Response...
- Page 71 7 Leave Sticky Mode field set to Off. 8 The default health check is Ping, click Next. Other available health checks are: 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.
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Page 72: Modifying Security Filters (Attack Mitigation)
8: C HAPTER ONFIGURING FOR Modifying Security The Server Load Balancer provides Attack Mitigation features that help to Filters (Attack prevent Denial of Service and Distributed Denial of Service attacks. Mitigation) When enabled, the attack mitigation features cause the Server Load Balancer to recognize and filter out security attacks. -
Page 73: Modifying User Access
Modifying User To modify the access of either the admin or monitor user, complete the Access following steps: 1 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. - Page 74 8: C HAPTER ONFIGURING FOR ALANCING...
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Page 75: A Safety Information
AFETY NFORMATION 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. -
Page 76: Important Safety Information
A: S PPENDIX AFETY NFORMATION 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. - Page 77 This unit operates under SELV (Safety Extra Low Voltage) conditions according to IEC 950. 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 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).
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Page 78: L'information De Sécurité Importante
A: S PPENDIX AFETY NFORMATION L’information de Sécurité Importante L'installation et la dépose de ce groupe doivent être confiés à un personnel qualifié. Si vous entassez l'unité Switch avec les unités SuperStack 3 Hub, l'unité Server Load Balancer doit être installée en dessous des unités Hub plus étroites. - Page 79 L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme CEI 950. Ces conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. France et Pérou uniquement: Ce groupe ne peut pas être alimenté par un dispositif à impédance à la terre.
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Page 80: Wichtige Sicherheitsinformationen
A: S PPENDIX AFETY NFORMATION Wichtige Sicherheitsinformat ionen Europe Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen. Wenn die Server Load Balancer Einheit in einer Stapel mit anderen SuperStack 3 Hub Einheiten eingebaut werden soll, muß die Server Load Balancer Einheit unter die schmaleren Hub Einheiten eingebaut werden. - Page 81 ACHTUNG: Faseroptikanschlüsse – Optische Sicherheit Niemals ein Übertragungslaser betrachten, während dieses eingeschaltet ist. Niemals direkt auf den Faser-TX-Anschluß und auf die Faserkabelenden schauen, während diese eingeschaltet sind. Die Verwendung von Steuerelementen oder die Anpassung von Leistungen und Verfahren in anderer als der hierin genannten Weise kann zu gefährlichen Laseremissionen führen.
- Page 82 A: S PPENDIX AFETY NFORMATION...
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Page 83: Pecifications And
–40 ° to +70 °C (–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). UL 1950, EN60950, CSA 22.2 No. 950, IEC 60950, IEC 825-1, EN 60825-1... -
Page 84: Console Port Cable
B: T PPENDIX ECHNICAL PECIFICATIONS AND Console Port Cable 9-pin to RS232 25-pin PC-AT Serial 9-pin to 9-pin... -
Page 85: Com Knowledgebase Web Services
3Com recommends that you access the 3Com Corporation World Wide Web site. Online Technical 3Com offers worldwide product support 24 hours a day, 7 days a week, Services through the following online systems: World Wide Web Site... -
Page 86: Support From Your Network Supplier
3Com FTP Site 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... -
Page 87: Support From 3Com
When you contact 3Com for assistance, have the following information ready: 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... - Page 88 1800 9453794 Italy 800 8 79489 Latin America Brazil 0800 13 3266 Mexico 01 800 849CARE North America 1 800 NET 3Com (1 800 638 3266) Enterprise Customers: 1 800 876-3266 Country Telephone Number Luxembourg 0800 3625 Netherlands 0800 0227788...
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Page 89: Returning Products For Repair
Returning Products Before you send a product directly to 3Com for repair, you must first for Repair 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:... - Page 90 C: T PPENDIX ECHNICAL UPPORT...
- Page 91 NDEX Numbers 3C number 15 3Com Knowledgebase Web Services 85 3Com URL 85 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...
- Page 92 83 summary view Web interface 32 system specifications 83 technical support 3Com Knowledgebase Web Services 85 3Com URL 85 network suppliers 86 product repair 89 unassigning the cache from the service 58 unassigning the server from the service 66...
- Page 93 NDEX summary view 32 World Wide Web (WWW) 85...
- Page 94 NDEX...
- Page 95 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.
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Page 96: Obtaining Warranty Service
You acknowledge and agree that the structure, sequence and organization of the Software are the valuable trade secrets of 3Com and its suppliers. You agree to hold such 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. - Page 97 THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING, POWER CUTS OR OUTAGES, OTHER HAZARDS, OR ACTS OF GOD. TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS LICENSORS AND SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR...
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Page 98: Other Services
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... - Page 99 EGULATORY OTICES FCC S TATEMENT NFORMATION CSA S TATEMENT CE S TATEMENT UROPE VCCI S TATEMENT BSMI S TATEMENT 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.
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