=============================================================================== SuperStack 3 Switch 4900 Series: Management Software Version 1.41 =============================================================================== This document provides information on the following areas: 1. Legal Rights 2. New Features in This Release 3. Recommendations When Using This Release 4. Known Problems With This Release 5. Documentation Errors and Omissions 6. Network Management Software Support 7. Upgrading This Release 8. 3Com's World Wide Web Site =============================================================================== 1: Legal Rights =============================================================================== _______________________________________________________________________________ IMPORTANT: READ BEFORE INSTALLING OR USING THIS SOFTWARE _______________________________________________________________________________ You should carefully read the terms and conditions of the Software License Agreement. This text is contained in a file called !license.txt if downloaded from the 3Com Bulletin Board. Your legal rights are defined therein. USE OF THIS SOFTWARE INDICATES THAT YOU ACCEPT SUCH TERMS AND CONDITIONS. IF YOU DO NOT AGREE WITH SUCH TERMS AND CONDITIONS, DO NOT USE THIS SOFTWARE. =============================================================================== 2: New Features in This Release =============================================================================== The version 1.41 agent feature set is an initial agent release. This agent includes support for the following: - SuperStack 3 Switch 4924 (3C17701) - SuperStack 3 Switch 4900 Series 1000BASE-SX Module (3C17710) - SuperStack 3 Switch 4900 Series 1000BASE-T Module (3C17711) - SuperStack 3 Switch 4900 Series 1000BASE-LX Module (3C17712) - SuperStack 3 Switch 4900 Series GBIC Module (3C17714) It does not include support for the following: - SuperStack 3 Switch 4900 (3C17700) - SuperStack 3 Switch 4900 SX (3C17702) =============================================================================== 3: Recommendations When Using This Release =============================================================================== Replacing Expansion Modules When the expansion module is replaced by another module of a different type, the configuration of the expansion module will not be completely reset to factory defaults. Specifically the following module associated parameters will not be reset: Static addresses resilient links IGMP router ports RMON alarm variables Spanning Tree port data It is recommended that all module configuration should be reviewed after the expansion module has been replaced. CD-ROM When using the setup.exe that displays the splash screen on the CD-ROM you may experience problems if you have an early version of virus checker installed on your PC. If you experience this problem the following error is displayed when the setup.exe is activated: Application Error Exception EResNotFound in Module 0DSCD. EXE at 0016: 0B37 Resource TMainForm not found. You can either: - Turn off your virus checking software whilst using the CD-ROM. or - Upgrade your virus checking software to the latest version. Serial Cable When using a serial cable you must ensure that it is wired correctly as described in Appendix B of the Getting Started Guide. TFTP Upgrades Note that when initiating a TFTP upgrade using the web interface or CLI, if an incorrect TFTP server IP address is entered you will not be able to correct the IP address until the TFTP upgrade operation has timed out after the default time out period of 3 minutes. Aggregated Links Aggregated links cannot be disabled. To effectively disable an aggregated link you should disable each individual port belonging to the aggregated link. An incompatibility exists in the default settings for Link Aggregation between the Switch 4900 series and the following 3Com products: Switch 4007,Switch 3900, Switch 9300, CoreBuilder 9000 family, CoreBuilder 9400 and the CoreBuilder 3500. In these products when a port is placed in an aggregated link auto-negotiation is disabled for that port. For aggregated links to operate correctly, the port characteristics at either end of the link must be the same. To resolve the incompatibility, you must complete the following steps: 1. On any of the switches listed above, you must disable TCMP on a trunk (aggregated link) which connects to the Switch 4900 series, as TCMP is not supported on the Switch 4900. 2. You must disable auto-negotiation on all ports on the Switch 4900 series that you want to place in an aggregated link before you place them in the aggregated link. Refer to the Management Interface Reference Guide on the CD-ROM that accompanies the Switch 4900 series for information about configuring aggregated links. =============================================================================== 4: Known Problems With This Release =============================================================================== - An incompatibility exists when changing link speed from 10 Mbps Half Duplex to 100 Mbps Half Duplex. If auto negotiation on the Switch 4924 is disabled and the link speed on the Switch 4924 is changed from 10 Mbps Half Duplex to 100 Mbps Half Duplex, there is a possibility that the link partner will not detect the change. The link will have to be broken and reconnected before the link partner will detect the speed and change link speed to 100 Mbps Half Duplex. - On Internet Explorer 5, if 'Ignore font styles specified on Web Pages' or 'Ignore font sizes specified on Web Pages' are selected, then the appearance of the web interface will be unpredictable. 3Com recommends that neither of these options are selected (options are found under Internet Explorer 5 menu Tools -> Internet Options -> Accessibility -> Formatting). - Auto-MDIX mode is not available if auto-negotiation is disabled on a port. That port will only operate in MDIX mode. - Aggregated links cannot be disabled. If this is attempted via Web or CLI you will get a warning message with a workaround for this command. See Section 3 for workaround details. - With IGMP snooping enabled, for VLANs other than the default VLAN, IP multicasts will only be forwarded within a VLAN if a multicast router acting as a source for IGMP queries is present in that VLAN. - When setting up a SLIP IP address and an IP address for the unit you must ensure that the assigned IP addresses are different. - Pause frames are counted incorrectly. Received pause frames are included in the transmit frame counters. Transmitted pause frames are included in the receive frame and octet counters. - If you use Netscape to manage your Switch you may experience problems when trying to change the user password. 3Com recommends that if you use Netscape and you need to change the password you do so via the CLI command. To do this from the web interface Device View, use the System/ Telnet/ Connect operation to start a Telnet connection and then use the 'security device user modify' CLI command. =============================================================================== 5: Documentation Errors and Omissions =============================================================================== No known errors =============================================================================== 6: Network Management Software Support =============================================================================== The CD-ROM contains 3Com Network Supervisor Version 3.0. To get the latest device support, use the Live Update function provided with Network Supervisor to get information about and install any new service pack or upgrade quickly and simply. To do this, first install the version of Network Supervisor provided on this CD. Then click Live Update in the Network Supervisor tool bar, or select Live Update from the Tools menu, to automatically retrieve and install the latest service pack or upgrade. You can also download the latest service pack or upgrade from the 3Com web site at http://www.3com.com/tns/. =============================================================================== 7: Upgrading This Release =============================================================================== The management software can be upgraded by using a TFTP Server or by using the Management Software Upgrade Utility supplied with your Switch. If you have downloaded the management software designed for a TFTP Server upgrade, place the file s3g01_41.bin in the appropriate directory on the Server. If you have downloaded the management software designed for a serial upgrade using the Management Software Upgrade Utility, place the file s3g01_41.bin in a directory accessible by the PC running the utility. For more information, refer to the Management Interface Reference Guide supplied with your Switch. =============================================================================== 8: 3Com's World Wide Web Site =============================================================================== Access the latest networking information on 3Com Corporation's World Wide Web site by clicking: http://www.3com.com/ _______________________________________________________________________________ (R) means registered trademark. (TM) means trademark. 3Com and SuperStack are registered trademarks of 3Com Corporation. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Ltd. Other trademarks are the property of their respective owners. Document Number: DRA1770-1CAA02 Issued: August 2001 Copyright (C) 2001 3Com Corporation. All Rights Reserved.