HP SuperStack 3 Load Balancer Appliance Release Notes
Contents
1. 44 0 1442 436722 fax Europe and South Africa From the following countries you may use the toll free numbers Austria 0800 297468 Luxembourg 0800 3625 Belgium 0800 71429 Netherlands 0800 0227788 Denmark 800 17309 Norway 800 11376 Finland 0800 113153 Poland 00800 3111206 France 0800 917959 Portugal 0800 831416 Germany 0800 1821502 South Africa 0800 995014 Hungary 06800 12813 Spain 900 983125 Ireland 1800 553117 Sweden 020 795482 Israel 1800 9453794 Switzerland 0800 55 3072 Italy 800 8 79489 U K 0800 966197 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 4 TECHNICAL SUPPORT 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 Table 2 Numbers to Call for Authorization Country Telephone Number Fax Number Asia Pacific Rim 65 543 6500 65 543 6348 Europe South Africa and Middle East 44 0 1442 435529 44 0 1442 436722 Central and South America 525 201 0075 Argentina 0810 222 3266 Bolivia 511 241 1691 Brazil 0800 133266 or 55 11 5643 2700 Caribbean 525 201 0004 Chile 562 240 6200 Col2. A server may be assigned to more than one service and will contribute 1 point per assignment Active Redundancy The Server Load Balancer 5 points Designation has been designated as the primary device in the redundant configuration In the example message log line shown under Virtual Router Redundancy Protocol Priority Generation on page 8 the priority value derived is defined as follows Client Role Ports Reachable 10 Server Role Ports Reachable 10 Default Router Reachable 15 Active Designation 5 Original priority 40 Server Assignment 1 Revised priority 41 Preventing VRID The VRRP protocol requires a unique identifier be used for each Collisions redundant device configuration The Server Load Balancer and Server Load Balancer Plus defaults the VRID field to the values of 1 and 2 10 RELEASE NOTE INFORMATION Restricted Management Topology Changing Redundancy Types In some cases these identifiers could collide with either another Server Load Balancer and Server Load Balancer Plus or with other network devices that are taking part in the VRRP protocol As a result it may be necessary to override the VRIDs used by the Server Load Balancer and Server Load Balancer Plus To override these values you must be at the Logical View and complete the following Select Server Load Balancing gt Redundancy Setting from the Navigation tree The Redundancy Settings page is displayed Enter an identifier with a value between
3. Redundancy Protocol VRRP to determine which devices should be in Active or Standby modes The message log as shown below for the Server Load Balancer and Server Load Balancer Plus contains entries that dynamically describe the state and operation of the redundant configurations 2001 01 01 12 00 00 INFO lt Ext Prot Vrrp gt VRID 1 Priority 40 Changing to Priority 41 The dynamic update of the priority field is an indication of the process that the Server Load Balancer and Server Load Balancer Plus continuously performs to determine its overall network connectivity In comparing this priority field with its peer s the unit with the greatest network connectivity value is deemed the Active device Redundant Configuration Issues 9 Table 1 depicts the contributing values used for the various network connectivity components monitored by the Server Load Balancer and Server Load Balancer Plus Table 1 Contributing Values of Monitored Components Source Meaning Contribution Client Role Port One or more ports with 10 points client access role in the forwarding state Server Role Port One or more ports with 10 points server access role in the forwarding state Default Router The default router is 15 points determined to be reachable via a ping check Server Assignment The server associated toa 1 point per server service assignment is assignment determined to be reachable via a Balance Specification health check Note
4. 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 technical information on most 3Com products 2 TECHNICAL SUPPORT 3Com FTP Site gt 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 FIP site enter the following information into your FTP client m Hostname ftp 3com com m Username anonymous m Password lt 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 a A list of system hardware and software including revision levels a Diagnostic error messages a Details about recent configuration changes if applicable If you are unable to contact your network supplier see the following sec
5. least 1 minute before initiating a subsequent upgrade Disable Attack Filters To ensure that the software upgrade sequence completes successfully all Attack Filters should be disabled for the duration of the upgrade The Attack Filters should be re enabled once the upgrade completes Restart the Browser The browser must be restarted after an upgrade is performed 14 RELEASE NOTE INFORMATION CP AD scom TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services This section describes these services Information contained in this section 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 a World Wide Web site a 3Com Knowledgebase Web Services 3Com FIP 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
6. 1 and 255 See the Server Load Balancer and Server Load Balancer Plus User Guide for information In a redundant configuration the Server Load Balancer and Server Load Balancer Plus automatically detect and learn about the peer device a Server Load Balancer or Server Load Balancer Plus that it is associated with To properly handle management traffic associated with the peer device the Server Load Balancer and Server Load Balancer Plus dynamically create certain forwarding filters As a result a client directly connected to a Server Load Balancer or Server Load Balancer Plus are not be able to manage the peer Server Load Balancer and Server Load Balancer Plus through the device that it is attached to To ensure that management traffic to the Server Load Balancer or Server Load Balancer Plus works properly in a redundant configuration the client station should be attached via a L2 device that connects both Server Load Balancer and Server Load Balancer Plus s together The Server Load Balancer and Server Load Balancer Plus must be reset to a factory configuration when changing the redundancy types selected For example if the Server Load Balancer or Server Load Balancer Plus has been configured for Active Passive operation and you want to change to and Active Active configuration the Server Load Balancer or Server Load Balancer Plus must be reset to factory defaults and the setup wizards must be re run in order to select the Active A
7. CANI 3com SuperStack 3 Server Load Balancer Server Load Balancer Plus Release Notes 3C16120 3C16121 Software Version A3 5 Release Date June 2001 http www 3com com Published June 2001 3Com Corporation 5400 Bayfront Plaza Santa Clara California 95052 8145 Copyright 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 descri
8. bed herein are provided to you subject 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 June 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 po
9. change all manageable parameters monitor the user can view all manageable parameters but cannot change any parameters 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 Configuration changes performed on either the Server Load Balancer or the Server Load Balancer Plus are committed to the configuration file after a 15 second delay You should wait at least 30 seconds before rebooting the Server Load Balancer and Server Load Balancer Plus The configuration file represents the current operating configuration and can be downloaded by entering the following address into the your management browser s address field assuming the address of the Server Load Balancer and Server Load Balancer Plus IP is 1 2 3 4 http 1 2 3 4 config current slb It is strongly suggested that the configuration file be downloaded and made available to 3COM Technical Support for the resolution of issues relating to the Server Load Balancer and Server Load Balancer Plus You can reset the Server Load Balancer s settings using the Web Interface or CLI The following describes what happens in a non redundant and redundant configurat
10. ctive mode System Clock 11 System Clock The time settings may get lost when power is removed from the device for durations greater than 30 days Following an initial installation or whenever power is removed from the device for an extended period of time it is recommended that the time setting be verified The time setting can be viewed using the show clock command in the CLI If the time is not accurate the proper time setting can be defined using the set clock command Service Access Permissions The Logical View allows permissions between a User group and a Service definition to be individually allowed or denied When the service access permissions are changed it will take 15 seconds for this change in policy to take effect The policy change only applies to connections initiated after the access permissions are changed That is connections currently established to the application service are not affected when the permissions are altered Balance Profile Configuration You cannot change a balance profile health check while the health check is assigned to a service although the Web interface allows you to attempt this The definition of a Logical View gt Balance Specification requires that a health check type be selected The Web interface currently allows an attempt to modify the health check type for an existing Balance Specification This operation is prevented by the operational firmware with the following in
11. dication Error The Health check type cannot be changed for an existing Balance Profile In order to change the health check type for a service you must 1 Unassign the servers using Server Assignments 2 Create a new balance profile specification and select a different health check type Y 3 Apply the new specification to the desired application service 4 Reassign the servers using Server Assignments 12 RELEASE NOTE INFORMATION See the Server Load Balancer and Server Load Balancer Plus User Guide for information Server Network Address Translation The Server Load Balancer and Server Load Balancer Plus allows for a network address to be specified for translation when a server initiates a connection to the external network The intent of this feature is to allow application servers to retrieve content from external locations of the network that they are connected to This feature supports the following protocols a DNS a ICMP PING a FIP m TELNET a HTTP The NAT feature does not meet the requirements of a full application level gateway implementing network address translation Additional protocols may work correctly but any protocols that negotiate dynamic ports do not work i e RTSP H323 SIP etc Dynamic Port Range If NAT is configured for operation on a Server Load Balancer and Server Load Balancer Plus the application services should not be defined using port numbers that overlay the dynamic port ran
12. ge that includes ports 49152 through 57343 These port ranges are used by the NAT function of the Server Load Balancer and Server Load Balancer Plus and potential port collisions may affect the proper operation of the application service or the address translation function Software Upgrades TFTP Server Timeouts The following section describes known issues related to performing software upgrades For the purpose of upgrading operational firmware the TFTP protocol is used by the Server Load Balancer and Server Load Balancer Plus to connect to servers The Server Load Balancer and Server Load Balancer Plus makes multiple attempts to upgrade using the designated TFTP server Software Upgrades 13 Table 2 describes the backoff delay times for each retry Table 2 Retry and Backoff Time Retry Backoff Delay Initial Attempt N A First 8 seconds Second 16 seconds Third 32 seconds Fourth 1 minute Fifth 1 minute Final 1 minute Once the Server Load Balancer and Server Load Balancer Plus have backed off the timeout it will never go back down again For example if a packet is dropped it may go from a time out of 8 to 16 seconds and remains at a 16 second timeout as long as packets continue to be received The retry count resets to indicate an initial attempt The upgrade terminates on its own in the worse case 6 minutes if no TFTP server is responding If an upgrade is initiated and then subsequently canceled you must wait at
13. ion Non Redundant Configuration In a non redundant configuration the primary IP address subnet mask and default router settings are preserved 8 RELEASE NOTE INFORMATION gt Clock Settings Redundant Configuration When resetting Device A the primary IP addresses for both Device A amp Device B the subnet mask and the default router settings are preserved The device redundancy setting is set to none and Device B synchronizes to this configuration setting When Device B discovers that it is no longer part of a redundant configuration all of the settings are reset to factory defaults including the primary IP address subnet mask and default router In redundant configurations resetting Device B s configuration is not recommended as Device A is unaffected and Device B becomes unreachable due to the loss of its primary IP address When Device A is configured it does not pass the configuration for set clock to Device B You must set the clock on Device B using the CLI Redundant Configuration Issues Virtual Router Redundancy Protocol Priority Generation The following are known issues that pertain to the Server Load Balancer and the Server Load Balancer Plus when configuration for redundancy The Server Load Balancer and Server Load Balancer Plus support the following redundant configurations a Active Passive a Active Active The Server Load Balancer and Server Load Balancer Plus use the Virtual Router
14. licy 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 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 RELEASE NOTE INFORMATION Overview 5 Product Prerequisites 5 Web Browser Requirements 6 Solaris and Linux Operating Systems 6 Reset To Factory Defaults 6 Configuration Issues 6 Cha
15. n on installing and configuring the Server Load Balancer or the Server Load Balancer Plus refer to the Server Load Balancer and Server Load Balancer Plus User Guide for information Product Prerequisites The Server Load Balancer and Server Load Balancer Plus require the following a Any Pentium or newer processor 3Com recommends using a Pentium processor of 350 MHz or greater a Microsoft Windows 95 98 Windows NT 4 0 or Windows 2000 a Web browser such as Netscape Navigator version 4 5 or above or Microsoft Internet Explorer version 5 0 or above a Java Runtime Environment Version 1 3 for updated Web browser plug ins A version of the Java Runtime Environment JRE plug in for Windows is provided on the Server Load Balancer and Server Load 6 RELEASE NOTE INFORMATION Web Browser Requirements gt Solaris and Linux Operating Systems Balancer Plus If the JRE program is missing you will be prompted to install it See the Server Load Balancer and Server Load Balancer Plus User Guide for information For an up to date list of supported operating systems and browser releases refer to the 3Com Web site at http Awww 3Com com Click Support for Products for more information The Web Interface requires a Web browser such as Netscape Navigator version 4 5 or above or Microsoft Internet Explorer version 5 0 or above Netscape version 4 77 is not supported at this time If you do not have a Web browser i
16. nging Password 7 Committing Configurations 7 Resetting Unit Settings 7 Clock Settings 8 Redundant Configuration Issues 8 Virtual Router Redundancy Protocol Priority Generation 8 Preventing VRID Collisions 9 Restricted Management Topology 10 Changing Redundancy Types 10 System Clock 11 Service Access Permissions 11 Balance Profile Configuration 11 Server Network Address Translation 12 Dynamic Port Range 12 Software Upgrades 12 THP Server Timeouts 12 Disable Attack Filters 13 Restart the Browser 13 TECHNICAL SUPPORT Online Technical Services 1 World Wide Web Site 1 3Com Knowledgebase Web Services 1 3Com FIP Site 2 Support from Your Network Supplier 2 Support from 3Com 2 Returning Products for Repair 4 Ez scom O w RELEASE NOTE INFORMATION Overview These release notes cover the Server Load Balancer 3C16120 and the Server Load Balancer Plus 3C 16121 Before using your Server Load Balancer and Server Load Balancer Plus please read this document in its entirety It contains important information about the product and the software 3Com provides easy access to technical support information through a variety of services See Technical Support on page 1 Information contained in the Technical Support section is correct at time of publication For the most recent information 3Com recommends that you access the 3Com Corporation World Wide Web site See Online Technical Services on page 1 For specific informatio
17. nstalled you must do so before installing and configuring the Server Load Balancer and Server Load Balancer Plus For more information on Netscape or Microsoft Internet Explorer refer to the manufacturer s Web sites located at http Awww microsoft com or http Awww netscape com For information on Solaris and Linux operating systems go to the following URL http support 3com com infodeli tools switches ss3 family htm Reset To Factory Defaults You should be careful when returning the Server Load Balancer and Server Load Balancer Plus in a redundant configuration back to factory defaults In a redundant configuration topological loops are inherent in the deployment Special consideration of the attachment of servers using L2 devices to the Server Load Balancer and Server Load Balancer Plus should be made to remove links that create loops among the devices When configuring for redundant operation avoid loops until the configuration is complete Configuration Issues The following are issues related to the configuration of the Server Load Balancer and Server Load Balancer Plus Changing Password Committing Configurations gt Resetting Unit Settings Configuration Issues 7 The Server Load Balancer and Server Load Balancer Plus provide two levels of access admin and monitor The password field contains blank default login passwords The two levels of access are a admin the user can access and
18. ombia 525 201 0004 Ecuador 525 201 0004 Mexico 525 201 0004 Paraguay 525 201 0004 Peru 511 241 1691 Uruguay 525 201 0004 Venezuela 525 201 0004 From the following countries you may call the toll free 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 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 Table 2 Numbers to Call for Authorization Country Telephone Number Returning Products for Repair Fax Number 5 U S A and Canada 1 800 NET 3Com 1 800 638 3266 Enterprise Customers 1 800 876 3266 1 408 326 7120 not toll free 6 TECHNICAL SUPPORT
19. tion on how to contact 3Com Support from 3Com If you are unable to obtain assistance from the 3Com online technical resources or from your network supplier 3Com offers technical 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 Table 1 Support Numbers Support from 3Com 3 a A list of system hardware and software including revision levels m Diagnostic error messages a 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 1 800 678 515 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
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