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DUA1640-5AAA02

Load Balancing

B-21

Viewing Utilization

History

If you click the

History

tab to the top of the panel, the Utilization

History page is displayed, as shown in Figure B-11.

Figure B-11

Utilization History Page

This page shows a graph of the utilization history for:

■

The total traffic that is being produced across all the segments in
the stack — The utilization is the percentage of the total available
bandwidth used to transmit valid and errored packets. It does not
include bandwidth wasted due to collisions.

■

All the cascaded and isolated segments.

The graph displays the values as percentages.

When the PS Hub is powered on, it starts recording the values for each
segment. When you view the Utilization History page, information that
has already been recorded is displayed. If the PS Hub has only just been
powered on, the graph will not display much information. The graph is
updated on each poll, if new information is available.

The PS Hub uses default RMON sessions to record the utilization history
of the segments. If you delete any of these sessions using an SNMP
Network Management Application, the PS Hub will be unable to record
information for those segments and it will not be displayed by the Load
Balancing Tool’s Utilization History page.

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Summary of Contents for 3C16405

Page 1: ... http www 3com com SuperStack II PS Hub User Guide 3C16405 PS Hub 40 12 port 3C16406 PS Hub 40 24 port 3C16450 PS Hub 50 24 port Part No DUA1640 5AAA02 Published July 1997 ...

Page 2: ... set forth in subparagraph a through d of the Commercial Computer Software Restricted Rights Clause at 48 C F R 52 227 19 and the limitations set forth in 3Com Corporation s standard commercial agreement for the software Unpublished rights reserved under the copyright laws of the United States If there is any software on removable media described in this documentation it is furnished under a licen...

Page 3: ...THE PS HUB Introduction 1 1 Features 1 2 How You Can Use the PS Hub 1 4 Building Up a Network 1 4 Expanding an Existing Network 1 5 Migrating to Higher Performance 1 6 Workgroups 1 7 What Are Workgroups 1 7 Segments and Port Switching 1 8 Workgroup Example 1 11 2 HOW THE PS HUBS DIFFER Overview 2 1 PS Hub 40 2 2 PS Hub 50 2 2 Segment Switch 2 2 PS Hub 50 Transceiver Module Slot 2 6 ...

Page 4: ...cade Cables 3 13 Using Cascade Cables 3 14 Using Hot Swap Cascade Units 3 15 Connecting Different Hubs and Stacks to Your Hub 3 16 Powering On the Units 3 17 Spot Checks 3 17 4 LOAD BALANCING Overview 4 1 How Does Load Balancing Work 4 2 Using an External Switch 4 3 Performing Load Balancing 4 3 5 MANAGING THE PS HUB Introduction 5 1 Why Manage Your Stack 5 2 How You Can Manage Your Stack 5 3 Comm...

Page 5: ...On 6 2 Logging Off 6 3 Using the CLI Menus 6 4 CLI Menu Structure 6 4 Navigating the Menus and Entering Commands 6 5 Quick Guide to the Commands 6 6 Commands 6 7 Changing the Password 6 7 Setting the IP Configuration 6 8 Viewing the Configuration 6 9 Resetting the Stack 6 10 Initializing the Stack 6 11 Configuring Another Unit in the Stack 6 11 Enabling and Disabling RMON Filter Capture 6 12 7 MAN...

Page 6: ...ess Management 7 16 Management Settings Pages 7 17 Documentation 7 17 Getting Started 7 18 Password Setting 7 19 System Name 7 19 Configuration Pages 7 20 Initialize 7 20 Load Balancing 7 20 Reset 7 20 Resilient Links 7 21 Add Resilient Link 7 23 Software Upgrade 7 24 Health Pages 7 25 Segment Graph 7 25 8 PROBLEM SOLVING Isolating a Problem 8 1 Solving Problems With the Hub 8 2 Solving Problems W...

Page 7: ...Config Manager B 4 Configuring Multiple Stacks B 4 Selecting Your Management Access Method Windows 95 and Windows NT only B 5 Quick Config Manager Window Map B 5 Accessing the Stack B 8 Giving the Stack an IP Address B 9 Viewing the Stack B 12 Configuring Segments B 14 Configuring the Segment Switch B 17 Load Balancing B 18 Menus B 19 Changing the Community Name B 19 Viewing Current Utilization B ...

Page 8: ...Utility D 1 Solving Problems With the Agent Upgrade Utility D 3 E TECHNICAL SUPPORT Online Technical Services E 1 World Wide Web Site E 1 3Com Bulletin Board Service E 1 3ComFacts Automated Fax Service E 2 3ComForum on CompuServe Online Service E 3 Support from Your Network Supplier E 3 Support from 3Com E 4 Returning Products for Repair E 5 GLOSSARY INDEX 3COM CORPORATION LIMITED WARRANTY EMC STA...

Page 9: ...pproved for the country where it will be used The appliance coupler that is the connector to the device itself and not the wall plug must have a configuration for mating with an EN60320 IEC320 appliance inlet For U S A and Canada The cord set must be UL approved and CSA certified The minimum specification for the flexible cord is No 18 AWG Type SV or SJ 3 conductor The cord set must have a rated c...

Page 10: ...n isolation transformer ratio 1 1 with the secondary connection point labelled Neutral connected directly to Earth Ground U K only The PS Hub is covered by Oftel General Approval NS G 12345 J 100003 for indirect connection to a public telecommunications system This can only be achieved using the console port on the unit and an approved modem Twisted Pair RJ45 ports These are shielded RJ45 data soc...

Page 11: ...écurité européennes La cordon d alimentation surmoulé doit être approuvé pour le pays auquel il sera utilisé Le socle de connecteur c est à dire le connecteur à l appareil lui même et non pas la prise murale doit avoir une configuration pour le branchement avec une admission d appareil EN60320 IEC320 Pour U S A et le Canada Le cordon surmoulé doit être UL Certifié et CSA Certifié Les spécification...

Page 12: ...re alimentée par 230V 2P T via un rapport de transformation d isolation de 1 1 avec un point de connexion secondaire étiqueté Neutre branché directement à la Terre à la Masse Les ports RJ45 de paire tordue Ceux ci sont les prises de courant de données RJ45 protégées Ils ne peuvent pas être utilisés comme prises de courant téléphoniques Brancher seulement les connecteurs RJ45 de données à ces prise...

Page 13: ...m Gerät selbst im Gegensatz zum Wandstecker muß in den EN60320 IEC320 Zuführungsstecker am Gerät passen Es ist wichtig daß der Netzstecker sich in unmittelbarer Nähe zum Gerät befindet und leicht erreichbar ist Das Gerät kann nur durch Herausziehen des Verbindungssteckers aus der Steckdose vom Stromnetz getrennt werden Das Gerät wird mit Sicherheits Kleinspannung nach IEC 950 SELV Safety Extra Low...

Page 14: ... Power System an diese Steckdose anschließen Für weitere Angaben die genauen Einbauanweisungen im Handbuch zum Redundant Power System befolgen Die Einheit ist unter keinen Umständen an einen Wechselstrom Netzstecker A C anzuschließen wenn dieser keine Erdung hat ...

Page 15: ...described in this guide If you are familiar with the PS Hub and know how the PS Hub s port switching and segments work you may only want to know how the PS Hub 40 and PS Hub 50 are different refer to Chapter 2 When referring to both the PS Hub 40 and PS Hub 50 generally this guide uses the term PS Hub For information on the Limited Warranty refer to the 3Com Corporation Limited Warranty at the bac...

Page 16: ...nformation on using the Command Line Interface to set up the hub for management Chapter 6 Information on using the web interface to manage the hub or stack of hubs Chapter 7 Information on solving any problems Chapter 8 The hub s dimensions the standards it conforms to and the cabling you can use with it Appendix A Information on using Quick Config Manager to manage the hub or stack of hubs Append...

Page 17: ...te value Commands are not case sensitive Screen displays This typeface represents information as it appears on the screen The words enter and type When you see the word enter in this guide you must type something and then press the Return or Enter key Do not press the Return or Enter key when an instruction simply says type Key names Key names appear in text in one of two ways Referred to by their...

Page 18: ...4 ABOUT THIS GUIDE ...

Page 19: ... shown in Figure 1 1 is a flexible managed Ethernet repeater which is very easy to set up and manage It can be used to build a small network or to expand a larger more established network Figure 1 1 The PS Hub The PS Hub is part of 3Com s SuperStack II PS Hub range which incorporates many of the features from the successful SuperStack II range SuperStack II products can be combined to create a net...

Page 20: ...ransceiver module slots that can be fitted with 3Com 10Mbps transceiver modules The PS Hub 50 has one transceiver module slot that can be fitted with a 3Com 10Mbps or 100Mbps transceiver module SuperStack II architecture You can stack up to 10 hubs six if free standing giving you a possible 260 ports per stack LEDs for quick viewing of hub and port status Hot swappable technology which allows hubs...

Page 21: ...upplied on the CD ROM including 3Com s Transcend Quick Configuration Manager for Windows An implementation of SNMP for management over the network using the IP protocol Support for traps messages which can alert an SNMP network management station of any problems Built in security and resilience which protects your network Port switching Allows you to build up workgroups by switching ports easily b...

Page 22: ...e refer to Segments and Port Switching on page 1 8 Building Up a Network The PS Hub is ideal for building up a new network It has its own built in management and comes ready to use The PS Hub range is totally scalable enabling you to start with one hub and add to it as your network grows You can connect your workstations and other network equipment to the PS Hub to build a small network as shown i...

Page 23: ... Hubs in the stack This provides fault tolerance because there is no single point of failure all hubs have management capability should they become isolated Figure 1 4 shows how PS Hubs can be added to an existing network the network is a stack of SuperStack II Hub 10 units in this example The hubs create more ports now and allow for further growth in the future The PS Hubs are connected to a swit...

Page 24: ...switch called a segment switch which can interconnect the segments in the stack so that the workgroups on the segments can communicate The PS Hub 50 has a transceiver module slot which can be fitted with a 10Mbps or 100Mbps 3Com transceiver module providing you with the option of having a 100Mbps network connection for example 100BASE TX or 100BASE FX This allows you to connect to 100Mbps networks...

Page 25: ...oups as shown in Figure 1 6 Figure 1 6 Workgroups You can keep these workgroups separate from each other so that the communication is contained within each workgroup or you can use the switching functionality of a PS Hub 50 to enable communication between the workgroups The workgroups are similar to the structure of your office so it is easy for you to make changes to your network adding and remov...

Page 26: ...s and port switching you can easily create your workgroups How the PS Hub Segments Work In a stack of PS Hubs four segments are carried between the hubs by the cascade cables These segments are four separate networks internal to the stack as shown in Figure 1 7 Figure 1 7 Cascaded Segments Each PS Hub has four internal segments These segments are separate internal repeaters and can connect to or r...

Page 27: ...igure the segments You can Connect and isolate the segments from their associated cascaded segments Switch the ports between the segments port switching The ability to configure the segments allows you to create flexible workgroups as shown in Figure 1 9 which can change and grow with your needs ...

Page 28: ...d segments Each segment is more efficient Local network traffic is contained within each cascaded segment so they avoid congestion from the other segments You can increase the efficiency by using load balancing to configure the segments so that traffic is distributed evenly across them You can use the web interface or Quick Config Manager to configure load balancing For information on how load bal...

Page 29: ... be isolated from the cascaded segments so that only workstations on the same hub segment can communicate with each other Port switching enables you to extend any existing workgroups you may have across the whole network infrastructure including shared Ethernet workgroups ...

Page 30: ...a network with the desired workgroups Table 1 1 shows how the users are grouped Figure 1 10 shows how the required workgroups are created using a stack of PS Hubs Figure 1 10 Workgroup Example see Table 1 1 Table 1 1 Groupings Hub Development Accounts Marketing Test Isolated Top A B C Middle D E F G H I J K L Bottom M N O P Q R S T ...

Page 31: ...physical connections so it can be made quickly and easily through either local or remote management Table 1 2 Changes to the Workgroups Change to workgroups Hub affected Action to implement change A B and C become part of Development cascaded segment 1 Top Reconnect segment 1 to cascaded segment 1 R S and T become part of Marketing cascaded segment 3 Bottom Switch ports for R S and T to segment 3 ...

Page 32: ...ation between the four cascaded segments in the stack so that your workstations can communicate across the segments For information on the PS Hub 50 refer to PS Hub 50 on page 2 2 For information on the segment switch in the PS Hub 50 refer to Segment Switch on page 2 2 For information on load balancing refer to Chapter 4 ...

Page 33: ...r they are both part of the PS Hub family and have many similar features For information on these common features refer to Features on page 1 2 Table 2 1 shows a summary of the differences between the PS Hubs Apart from the differences shown in Table 2 1 the PS Hubs have the same features Table 2 1 Differences Between the PS Hubs Features PS Hub 40 PS Hub 50 Has the hub got an internal segment swi...

Page 34: ...50 The main feature of the PS Hub 50 over the PS Hub 40 is that it has an internal segment switch Segment Switch The segment switch is an additional part of the PS Hub 50 which links the stack s four cascaded segments It provides switching between the four cascaded segments in the stack so that the workstations on those cascaded segments can communicate across the segment switch Using management y...

Page 35: ...er with the associated cascaded segment Using this database the segment switch can then selectively pass future packets to the relevant cascaded segment When the switch database is full no new addresses are learnt The segment switch regularly removes unused learnt addresses from the switch database known as ageing if they have not been used after 30 minutes the ageing period Using the web interfac...

Page 36: ...or fails You could have two PS Hub 50 units in a stack of PS Hubs one at the top and one at the bottom PS Hub 50 units automatically detect each other in the stack and configure themselves so that one of the hubs becomes the active switch and the segment switches in all the other hubs are disabled This is to reduce the possibility of loops in the stack If a PS Hub 50 is removed from the stack or f...

Page 37: ...ows a stack of two PS Hub 50 units both with 100Mbps transceiver modules Both transceiver modules have a connection and appear to be equal so the bottom unit s segment is the active segment switch and that transceiver module is used If the connection to the bottom unit s transceiver module fails the stack reconfigures so that the top unit s segment switch becomes the active segment switch Figure 2...

Page 38: ...ess are dealt with differently by the segment switch refer to How Does the Segment Switch Work on page 2 3 The configuration of the transceiver module port is different For information on what transceiver modules you can use refer to Using Transceiver Modules on page 3 12 Using a 10Mbps Transceiver Module When a 10Mbps transceiver module is used the PS Hub 50 allows you to port switch it to any of...

Page 39: ...ceiver Module Using a 100Mbps transceiver module to provide a 100Mbps network connection gives you several options You can have a fast downlink to a network server or the rest of your network You can connect a 100Mbps network to your 10Mbps network allowing you to migrate to a faster network in the future With multiple PS Hub 50 units you can have a Fast Ethernet resilient link in your stack refer...

Page 40: ...DUA1640 5AAA02 2 8 CHAPTER 2 HOW THE PS HUBS DIFFER ...

Page 41: ...e Quick Reference Guide The LEDs Show you how the hub and its ports are operating Show you how the hub s segments are operating Alert you to a potential problem with your network The different types of ports are used for Connecting workstations and other equipment to your hub Connecting your hub to other PS Hubs to form a stack Connecting a management station to your hub for local management CAUTI...

Page 42: ...DUA1640 5AAA02 3 2 CHAPTER 3 USING THE PS HUB Figure 3 1 The LEDs and Ports the PS Hub 40 is shown ...

Page 43: ...DUA1640 5AAA02 LEDs and Ports 3 3 ...

Page 44: ...Needed You may need to get some cables and other equipment for connecting your workstations and other hubs to the PS Hub Your supplier should stock these cables and equipment For information on how the cables pins are connected refer to Cabling on page A 3 Connecting Workstations To connect workstations to your hub you need One Straight through 10BASE T cable for every workstation We recommend you...

Page 45: ... your supplier in a variety of lengths refer to Cascade Connections on page A 6 For information on connecting another PS Hub to your hub refer to Connecting PS Hubs Together Stacking on page 3 12 Connecting Different Hubs and Stacks To connect different hubs or stacks to your hub you need One Straight through 10BASE T cable for each unit or stack if using the last port port 12 or 24 and the MDI MD...

Page 46: ...ey cannot pull the stack over No objects are placed on top of any hub or stack Using the Rubber Feet Four standard height and two reduced height self adhesive rubber feet are supplied with the hub Do not apply the feet if you intend to rack or wall mount the hub Usage of the feet depends on where the PS Hub is placed If the hub is going to be placed on top of a flat surface or another PS Hub use t...

Page 47: ...e labels on the rear of the hub show The product number of the hub The power safety information The four labels left on the sheet are for you to use as necessary Depending on how you are going to position the hub you may want to stick the labels in a more accessible place on the top or on the front of the hub for example All four labels have the name product number serial number and MAC Ethernet a...

Page 48: ...ed Rack Mounting The hub is 1U high and fits a standard 19in rack To rack mount the hub 1 Place the hub the right way up on a hard flat surface with the front facing towards you 2 Locate a mounting bracket over the mounting holes on one side of the hub as shown in Figure 3 2 Figure 3 2 Locating the Brackets for Rack Mounting 3 Insert the two screws and fully tighten with a suitable screwdriver 4 R...

Page 49: ...s on one side of the hub as shown in Figure 3 3 Figure 3 3 Locating the Brackets for Wall Mounting One Hub 3 Insert the two screws and fully tighten with a suitable screwdriver 4 Repeat the two previous steps for the other side of the hub To fit the brackets to two hubs for wall mounting 1 Stack the hubs the right way up on a hard flat surface with the front facing towards you 2 Locate two mountin...

Page 50: ...that the wall you are going to use is smooth flat dry and sturdy If necessary attach a piece of plywood securely to your wall Ensure that the plywood is large enough to mount the hub s on 2 Position the hub s against the wall or plywood ensuring that the ventilation holes face sideways Mark on the wall the position of the screw holes for both wall brackets Drill the four holes 3 Using suitable fix...

Page 51: ...o ensure that the hub performs a full reset Connecting workstations to your hub is easy Connect them using 10BASE T cables to any of the hub s 10BASE T RJ45 ports To connect a 10BASE T cable simply slot the connector into the relevant RJ45 port When the connector is fully in its latch locks it in place To disconnect the cable push the connector s latch in and remove it The hub detects all port con...

Page 52: ...ver module you use refer to PS Hub 50 Transceiver Module Slot on page 2 6 Connecting PS Hubs Together Stacking You can increase the number of ports in your network by connecting additional PS Hub 40 and PS Hub 50 units to your hub to form a stack this process is called stacking The four cascaded segments are carried through the stack enabling you to switch the ports on all of the hubs between the ...

Page 53: ...ff without affecting the operation of the other units in the stack The units within a stack automatically reconfigure when a unit is added or removed from the stack However if a cascade cable is disconnected the stack splits into two isolated stacks The units within the stack s automatically reconfigure when a cascade cable is connected or disconnected Hot Swap Cascade Units You can increase the r...

Page 54: ... the bottom unit using a cascade cable Connect the cable s connector marked UP to the UP port on the unit Connect the cable s connector marked DOWN to the DOWN port on the unit directly above it Secure the cable in place by tightening its captive screws as tight as possible by hand 3 Continue up the stack repeating step 2 for each unit as shown in Figure 3 5 Figure 3 5 Connecting PS Hubs Together ...

Page 55: ...ade Units Connect the cables connectors marked DOWN to the DOWN ports on the Hot Swap Cascade Units Secure the cables by tightening the cables captive screws as tight as possible by hand 3 Starting at the bottom connect the bottom Hot Swap Cascade Unit to the UP and DOWN port of the unit Secure the Hot Swap Cascade Unit in place by tightening its long captive screws as tight as possible by hand 4 ...

Page 56: ...ossed MDIX The type of cable and ports used must be correct for the connection to work You can use Straight through 10BASE T cable to connect a crossover MDIX port to an uncrossed MDI port You can use Crossover 10BASE T cable to connect two crossover MDIX ports The last port port 12 or 24 on the PS Hub can be either crossed or uncrossed The MDI MDIX switch affects the port s state If the switch is...

Page 57: ...rt connections at any time After powering on the hub its Power Self Test LED flashes for a few seconds while the hub performs its self test Afterwards the LED lights green If it does not refer to Solving Problems With the Hub on page 8 2 Any information that you configure for the unit using management is retained when you power off the unit Spot Checks At frequent intervals visually check that Cas...

Page 58: ...DUA1640 5AAA02 3 18 CHAPTER 3 USING THE PS HUB ...

Page 59: ...ubs The aim of load balancing is to increase total throughput across the segments in a stack providing more efficient segments As load balancing configures segments in a stack you cannot perform workgrouping at the same time In effect the segments participating in load balancing are a single high capacity workgroup For load balancing to work properly there must be either A PS Hub 50 in the stack A...

Page 60: ...e PS Hubs work out which internal segments and cascaded segments are connected by a switch either through the PS Hub 50 unit s segment switch or an external switch It does this because the load balancing feature will only move ports between segments that they currently communicate with so that no workstations become isolated Figure 4 1 shows an example of a stack with a PS Hub 50 that is to be loa...

Page 61: ...e new configuration the load balancing feature completes the operation by moving the ports between the segments as required Using an External Switch The best way to interconnect the cascaded segments in a stack of PS Hubs is to use a PS Hub 50 However if you want to connect two or more segments using an external switch you must connect the switch to the PS Hub s 10BASE T or transceiver module port...

Page 62: ...DUA1640 5AAA02 4 4 CHAPTER 4 LOAD BALANCING ...

Page 63: ... refer to a stack of one or more PS Hubs and management station to refer to the piece of equipment you are using to manage the stack for example a computer If the stack is connected and configured as recommended the bottom hub in the stack is unit number 1 the next hub up is unit number 2 and so on All PS Hubs must be running agent software version 2 00 or later for them to have the functionality ...

Page 64: ... specifying what equipment is allowed to communicate through the ports on the hub Set up resilience specify a backup connection that takes over should a main connection fail View statistics Configure the console port for connection to a modem Configure user management access levels Upgrade the management software in the stack with any future agent software upgrade Configure the stack to send messa...

Page 65: ...ion Manager referred to as Quick Config Manager in this guide that is supplied on the CD ROM It runs under Microsoft Windows and provides an easy to use graphical management system Command Line Interface The PS Hub s Command Line Interface CLI is a simple text based user interface which allows you to configure some network information for your hub The CLI provides just a subset of the web interfac...

Page 66: ...y as good as its management system 3Com produces a range of powerful graphical SNMP network management applications for example Transcend Enterprise Manager for Windows that give you total control over your entire 3Com network from a single management station Using intelligent 3Com software distributed throughout the network 3Com s Transcend management applications support all of today s platforms...

Page 67: ...r Using a terminal Using Quick Config Manager Over the network known as in band management Using an SNMP network management application Using a web browser Using a terminal emulator over Telnet Using Quick Config Manager Windows 95 and Windows NT If you are going to manage the stack over the network the quickest way to set it up with the necessary network information is to connect to one of the PS...

Page 68: ...whole stack If the stack is physically split in two the IP information remains with the hub and is used by its half the other half has no IP information so it becomes unmanageable over the network You can configure more than one hub in a stack with IP information We recommend you do this for the top and bottom hubs to obtain redundant management capabilities should the stack split IP must be corre...

Page 69: ... organization only you may use any arbitrary IP address We suggest you use addresses in the series 191 1 1 X where X is a number between 1 and 254 Use the default SLIP address of 192 168 101 1 If your network has a connection to the external IP network you must apply for a registered IP address This system ensures that every IP address used is unique if you do not have a registered IP address you ...

Page 70: ...ault the hub has auto configuration enabled which will change the hub s console port settings to match those of the connected equipment and automatically detect the baud rate line speed The hub can auto detect a maximum baud rate of 19200 You need to use a null modem cable for connecting your terminal or management station directly to the console port This should be available from your supplier Th...

Page 71: ...ions and operating systems refer to the documentation that accompanies your terminal emulator for information on how to use it HyperTerminal HyperTerminal can usually be found from the Windows Start menu in Programs Accessories To start a HyperTerminal session after connecting to the hub s console port 1 Double click on the Hypertrm exe icon to start the application The Connection Description dial...

Page 72: ...dialog box appears select the serial port that you are using to connect to the hub and click OK 3 From the Settings menu in the main Terminal window select Terminal Emulation The Terminal Emulation dialog box appears 4 Select DEC VT 100 ANSI and click OK 5 From the Settings menu select Communications The Communications dialog box appears 6 Configure the data bits to 8 stop bit to 1 parity to none ...

Page 73: ...h the IP address configured Using a Telnet Terminal Emulator You can use the Telnet terminal emulator that comes with Microsoft Windows 95 called Telnet to access the hub s CLI To open the Telnet session you must specify the IP address of the hub you want to manage For other types of management stations and operating systems refer to the documentation that accompanies your Telnet terminal emulator...

Page 74: ...d to use a null modem cable for connecting your management station directly to the console port This should be available from your supplier There are a variety of null modem cables that you can use For an example of one of these refer to Console Cable on page A 4 Over the Network You must have an IP stack on your management station so that you can manage over a TCP IP network An easy way to check ...

Page 75: ...n manage the PS Hub using Quick Config Manager You can manage the hub Through the console port Over the network Windows 95 and Windows NT version 4 or later only You can perform similar management functions using Quick Config Manager as you can using the web interface Through the Console Port You need to use a null modem cable for connecting your management station directly to the console port Thi...

Page 76: ...ned in order to access the window When you have made your connection and installed Quick Config Manager you are ready to manage the stack Quick Config Manager uses COM 1 as the default serial port on your management station If you want to change this refer to Running Quick Config Manager on page B 4 Over the Network You must have an IP stack on your management station so that you can manage over a...

Page 77: ...f you have many hubs that you want to set up quickly with IP address information for eventual management using an SNMP network management application Simple help is provided with each command in the Command Line Interface Ensure that your terminal or management station which has the terminal emulator has been appropriately set up for your particular management method and that any necessary connect...

Page 78: ...as soon as a Telnet session is started Initial Access The login prompt Login is displayed As the initial user enter the default user name admin and press Return at the Password prompt The first time you access the CLI the password is null We recommend that when you have accessed the stack you change the default passwords for the user levels if you have not already done so by logging in as the diff...

Page 79: ...tic Logout As a security measure a management session will be terminated if there is a period of inactivity lasting longer than 30 minutes After the session has terminated the first key that you press returns you to the login prompt Table 6 1 Default Users User Name Default Password Access Level monitor monitor Monitor this user can view but not change all manageable parameters manager manager Man...

Page 80: ...nu Use the CLI by selecting options from this menu and from the others below it Each menu option is accompanied by a brief description of what that option does CLI Menu Structure Figure 6 2 shows the menu command structure for the CLI Figure 6 2 CLI Menu Structure From the top level menu you can access two sub menus IP Menu From here you can configure IP parameters System Menu From here you can vi...

Page 81: ...t the prompt For example to display system configuration the CLI would read Select menu option sy di As you navigate through the menus the prompt changes to display your current position in the hierarchy For example if you are in the interface sub menu of the system menu ready to enter your next option the prompt reads Select menu option system Entering Commands When you reach the menu level conta...

Page 82: ... found on define Sets IP and SLIP parameters page 6 8 ip display Displays IP and SLIP parameters page 6 9 capture Enables disables RMON Filter capture page 6 12 system display Displays administration information for the hub page 6 9 initialize Configures the stack back to default settings page 6 11 inventory Lists the units in the stack page 6 10 password Changes the password of the current user p...

Page 83: ...Solving Problems With the Command Line Interface on page 8 3 To set a new password or change an existing password 1 At the top level menu enter system password 2 You are prompted for your old password Old password If this is the first time you are setting a password press Return without entering any text If you already have a password set up then enter the password 3 The prompt changes to show Ent...

Page 84: ... of these values you may need to re access the hub using the new values To enter new IP settings 1 At the top level menu enter ip interface define 2 You are prompted for the hub s IP address Enter IP address 0 0 0 0 Enter a valid IP address for the Hub 3 You are prompted for the hub s subnet mask Enter subnet mask 255 255 255 0 Enter a subnet mask 4 You are prompted for a default router address En...

Page 85: ... 10 minutes Operational Version 1 00 Boot Version 1 00 Hardware Version 1 00 Serial Number 2103332 This information is in the hub s MIB Management Information Base and is read only You can change the Unit name Location and Contact using the web interface If a problem occurs and you need advice from your support representative you may be asked for some of the information shown on this screen Displa...

Page 86: ...2 and so on Description The type of unit Name The name that you have assigned to the unit State The current operating status of the unit Unit Operational Indicates that the unit is operating normally Unit Loading Indicates that there is a process taking place for example a software upgrade Resetting the Stack Resetting the stack simulates powering off and powering on the stack You may want to do t...

Page 87: ...er the network To initialize the stack 1 At the top level menu enter system initialize 2 The CLI asks you to confirm the initialize Enter y if you wish to proceed or n if you want to stop the initialize The stack s passwords return to the default passwords Configuring Another Unit in the Stack The unit command allows you log on to another unit in the stack without disconnecting from the current un...

Page 88: ... disable RMON Filter capture By default this is enabled You may wish to disable this if you have no requirement to perform RMON packet monitoring and wish to increase the security of your network To configure RMON Filter capture 1 At the top level menu enter system capture 2 Enable or disable RMON Filter capture as required ...

Page 89: ...rticular management method and that any necessary connections have been made refer to Web Interface on page 5 12 If you want to access the web interface through a serial link from a Windows 95 management station connected to the console port of a hub in the stack you must use the 3Com serial web utility SLIP Driver refer to Appendix C Any number of people can access the web interface over the netw...

Page 90: ... located the stack a password panel is displayed as shown in Figure 7 1 Enter your user name and password as requested Figure 7 1 Password Panel If no passwords have been configured for the stack the default password for the security level of user is security The user names and passwords are the same as those that you use to access the CLI For a list of the user names and the default passwords ref...

Page 91: ...d For information on how to use the Getting Started pages refer to Getting Started on page 7 18 Figure 7 2 The Web Interface s Front Page You are now ready to manage the stack If you are unable the access the web interface refer to Solving Problems With the Web Interface on page 8 4 While managing the stack you can use your web browser to look at other web pages or interfaces and then simply use t...

Page 92: ...hanges to show the different information about the stack Figure 7 3 Components of the Web Interface General Components If you click on the Management categories on the side bar The page area changes to show different management information about the stack for example network addresses and graphs External links on the banner The web browser displays general information which is external to the web ...

Page 93: ...ry 3Com Contacts 3Com Support Table 7 1 Management Categories Management Settings Displays information about the stack s management settings Configuration Displays information about the configuration of some of the stack s features Health Displays statistics for the stack s segments only available if there is a PS Hub 50 in the stack Stack icon Selecting a unit displays information about the unit ...

Page 94: ...ter new values if required Checkboxes Show whether options are enabled checked or disabled unchecked Click on the checkboxes to change them Action buttons Affect the information in the fields and checkboxes for that page Page links Link to other pages of information within the same management category Web Interface Map Figure 7 4 shows how the pages in the web interface are linked The page number ...

Page 95: ... Figure 7 5 You can make changes to the information on the current page and click Apply when finished Figure 7 5 Management Category Page 2 To display another page in that management category click on the link in the row of links The page area changes to show the new page 3 Make changes to the information on the page as necessary click Apply when finished and choose another when ready When you hav...

Page 96: ... page is redisplayed A 10BASE T or transceiver module port The Port Setup page is displayed for that port The console port The Console Port Configuration page is displayed Segment Configuration The Segment Configuration page is displayed The segment switch or Cascade Switch The Switch Configuration page is displayed only available for a PS Hub 50 If you click on one of the segment buttons the Unit...

Page 97: ...py the files onto your management station s local drive or place the CD ROM in a your management station s CD ROM drive Copy the files onto a network drive or place the CD ROM in a network CD ROM server Copy the files onto a web server 2 Copy all of the files into a chosen directory if required On the CD ROM the files are in these directories Help system Agent version Help Documentation Agent vers...

Page 98: ...ted are color coded and show these conditions Black The port is enabled Green The port is enabled and has a connection Gray The port has been disabled by management Red The port has partitioned disabled itself to prevent a network loop Identifying Which Ports Belong to a Segment To view which ports belong to a segment click on the segment button on the Unit View The graphic changes and ports that ...

Page 99: ...nfig Manager or an SNMP network management application Unit Description The unit s product name Hardware Rev The version of hardware inside the unit MAC Address The unit s MAC Ethernet address Software Version The version of management software that the unit is running Boot PROM Version The version of software on the Boot PROM inside the unit Unit Uptime The time that has elapsed since the unit wa...

Page 100: ... values Figure 7 8 Management Address Page The fields are IP Address Provides a box for you to type the IP address of the stack Network Mask Provides a box for you to type the subnet mask for the IP address Default Router Provides a box for you to type the IP address of the default router if you have one which is used by the stack to communicate with other networks BOOTP Disabled Enabled Specifies...

Page 101: ...is part of a resilient link you cannot enable or disable the port You must first delete the resilient link For more information on resilient links refer to What are Resilient Links on page 7 22 Partition State Shows whether the port is on and repeating traffic or has automatically partitioned isolated itself If the port has partitioned check the cabling at both the port and any devices connected t...

Page 102: ... cannot access the unit over the network If you want to change the settings but are unsure of the correct settings to use refer to the user documentation that accompanies your terminal or modem The fields are Console connection Terminal Modem Specifies what you are connecting directly to the console port If you are connecting to a modem select Modem otherwise leave as Terminal management station P...

Page 103: ...sociated cascaded segments Name the segments Figure 7 10 Segment Configuration To view which ports belong to a segment click on the segment button on the Unit View The graphic changes and ports that are members of that segment are highlighted with a dark blue surround To move a port to a different segment use the Port Setup page for that port refer to Port Setup on page 7 13 ...

Page 104: ...e is used to add or edit permanent addresses in the active segment switch s database as shown in Figure 7 11 Figure 7 11 Permanent Address Management Page The fields are MAC Address The MAC address of the device Segment The cascaded segment to which the device is connected Adding and Deleting Permanent Addresses To add a permanent address to the switch database click Add The Add a Permanent Addres...

Page 105: ... For more information on how to set up the online help system and online documentation refer to Online Help System and Documentation on page 7 9 Figure 7 12 Documentation Page The fields are Help Specifies where the online help system can be found Enter the appropriate directory or web address Examples are file f help default htm http yournetwork com help default htm Documentation Specifies where ...

Page 106: ...path or web address URL for the online help system and documentation files To enter a new password you can leave it blank if you don t want to change it If you have no previous knowledge of IP refer to IP Addresses on page 5 7 You do not have to use the Getting Started pages to configure this information as it can all be configured using other pages in the web interface If you have already configu...

Page 107: ...o not appear on the screen Figure 7 13 Password Setting Page The fields are New Password Type the new password you want to use Confirm Password Retype the password for confirmation System Name This page allows you to enter a name for the stack Use a descriptive name for example First floor stack The name that you specify for the stack appears on some of the CLI and web interface pages ...

Page 108: ... passwords Load Balancing This page is used to initiate the load balancing feature in the stack For information on load balancing refer to Chapter 4 You can configure the stack s load balancing feature by using the Load Balancing Tool refer to Load Balancing on page B 18 The stack may take some time to complete the load balancing operation The load balancing feature will not work if Load Balancing...

Page 109: ... a resilient link However you can have Fast Ethernet Resilience in your stack with multiple PS Hub 50 units For more information refer to Fast Ethernet Resilience on page 2 5 Figure 7 14 Resilient Links Page The fields are Main Link Shows the hub and port number of the main link and the state of the link Standby Link Shows the hub and port number of the standby link and the state of the link Pair ...

Page 110: ...ts can be on different hubs in the stack and any network devices can be at the other ends of the links When the network is in use the stack that has been used to set up the resilient link pair monitors the state of both the main link and the standby link If the main link fails the standby link becomes active You can use the Resilient Links page to view the status of the links If you have an SNMP n...

Page 111: ...you have more than two stacks there are a number of ways you can use resilience when linking them Remember to connect the stacks correctly for both links refer to Connecting Different Hubs and Stacks to Your Hub on page 3 16 If the main link fails the standby link becomes active Adding Deleting and Swapping Links To add a resilient link pair to the list click Add The Add Resilient Link page is dis...

Page 112: ...hub is upgraded any configurations that have been made to it are maintained Upgrading a stack of hubs may take up to 5 minutes for each hub Figure 7 15 Software Upgrade Page The fields are Filename Type the filename of the upgrade file Do not enter a path The file name format is PS Hub 40 software upgrade pshxx_yy bin PS Hub 50 software upgrade psfxx_yy bin Where xx_yy is the version of agent soft...

Page 113: ...econd graph shows information for the last 48 hours as shown in Figure 7 16 This page is only available if there is a PS Hub 50 in the stack Figure 7 16 Segment Graphs Page The fields are Unit Specifies the unit that has the segment Segment Specifies the segment that the graphs are displayed for Graph Type Specifies the type of graph that is displayed Utilization Shows the utilization of the segme...

Page 114: ...DUA1640 5AAA02 7 26 CHAPTER 7 MANAGEMENT USING THE WEB INTERFACE ...

Page 115: ...elf Test LED flashes If you have a problem using Quick Config Manager refer to Solving Problems With Quick Config Manager on page B 29 If you have a problem with the serial web utility refer to Solving Problems With the Serial Web Utility on page C 4 If you have a problem using the agent upgrade utility refer to Solving Problems With the Agent Upgrade Utility on page D 3 Isolating a Problem A good...

Page 116: ...10BASE T port It is likely that there is a loop in your network which has caused this port to partition Examine your connections and remove the loop Each piece of equipment needs only one connection to your stack Port Status LED not lit for a port that has a connection There is a problem with this connection Check you are using a Straight through 10BASE T cable which is properly connected at both ...

Page 117: ...ce of equipment needs only one connection to your stack It could be that SQE test is enabled for the transceiver module Ensure that it is disabled on the transceiver module Solving Problems With the Command Line Interface The initial Login prompt does not display Check that your terminal or terminal emulator is correctly configured to operate as a standard terminal If this doesn t work try configu...

Page 118: ...port through which you are trying to access the stack has not been disabled If it is enabled check the connections and network cabling at the port Try accessing the stack through a different port If you can now access the stack a problem with the original port is indicated or it has been switched from segment 1 to another segment Re examine the connections and cabling Possibly there is a network p...

Page 119: ... configured For information refer to Requirements for Managing Over the Network on page 5 6 Traps are not received by the SNMP network management application Check that the address of the management station is entered in the stack You can do this using Quick Config Manager refer to Giving the Stack an IP Address on page B 9 The SNMP network management application can no longer access the stack Che...

Page 120: ...DUA1640 5AAA02 8 6 CHAPTER 8 PROBLEM SOLVING ...

Page 121: ... achieved using the console port and an approved modem Table A 1 Dimensions Power and Operating Environment For All PS Hubs Height 43 6mm 1 7in Width 440mm 17 4in Depth 168 5mm 6 7in Operating temperature 0 50 C 32 122 F Humidity 0 90 non condensing AC line frequency 50 60 Hz Input voltage 100 240V AC Current rating 1A maximum Table A 2 Weight and Power Consumption 3C16405 3C16406 3C16450 Weight 2...

Page 122: ... B Class 2 requirements of this standard The use of unscreened cables Category 3 or 5 complies with the Class A Class 1 requirements Table A 3 Standards Functional ISO 8802 3 IEEE 802 3 Safety EN 60950 UL 1950 CSA 22 2 950 EMC emissions EN 55022 Class B FCC Part 15 subpart B Class A ICES 003 Class A VCCI Class 2 AS NZS 3548 Class B EMC immunity EN 50082 1 Environmental EN 60068 IEC 68 Reliability ...

Page 123: ...uts for the various cables that are used with the PS Hub These cables are available from your supplier 10BASE T Cable Figure A 1 Pin Numbering for 10BASE T Straight through Figure A 2 Straight through 10BASE T Cabling Crossover Figure A 3 Crossover 10BASE T Cabling ...

Page 124: ...02 A 4 APPENDIX A DIMENSIONS STANDARDS AND CABLING Console Cable Figure A 4 Pin Numbering for Console Examples of Null Modem Cables You Can Use Figure A 5 Example of Null Modem Cabling for 9 pin Management Station ...

Page 125: ...DUA1640 5AAA02 Cabling A 5 Figure A 6 Example of Null Modem Cabling for 25 pin Management Station Modem Cable Figure A 7 Example of Modem Cabling for 25 pin Management Station ...

Page 126: ...hese items Management Settings Table A 5 shows the settings you need to set your management station s serial port to if you are managing the PS Hub directly through its console port Table A 4 Cascade Cables and Units Number Cable Length 3C16420 Cascade cable 0 3m 11 8in 3C16421 Cascade cable 1m 39 5in 3C16422 Cascade cable 3m 118 6in 3C16430 Hot Swap Cascade Unit Table A 5 Management Station Setti...

Page 127: ...umented in this appendix refer to the Quick Config Manager help files To invoke the help files simply select Help from the Quick Config Manager menu bar Quick Config Manager uses a familiar Windows interface with point and click operation To use Quick Config Manager effectively you need to be familiar with Microsoft Windows Refer to the documentation that accompanies Microsoft Windows for more inf...

Page 128: ...cing Tool is installed by the Quick Config Manager installation program Installation Requirements Quick Config Manager and the Load Balancing Tool require an IBM compatible PC with at least a 486 33 processor Your system must also include Microsoft Windows 3 1 or later or Windows 95 or Windows NT The Load Balancing Tool only installs and runs on a Windows 95 or Windows NT system MS DOS 5 0 or late...

Page 129: ...ed installation To install Quick Config Manager 1 Start Microsoft Windows If you already have an existing Transcend management application running ensure that it is closed down 2 Insert the CD ROM into your CD ROM drive 3 Depending on your version of Windows Select Run from the Start menu Windows 95 and Windows NT version 4 or later Select Run from the File menu other versions of Windows 4 In the ...

Page 130: ...INI file SerialAttrib COM1 9600 n 8 1 Editing it to SerialAttrib COM2 9600 n 8 1 changes the default serial port to COM2 Before Managing with Quick Config Manager you must ensure that your management equipment and the hub have been set up refer to Quick Config Manager on page 5 13 Configuring Multiple Stacks There is a special feature which enables you to refresh your management communication when...

Page 131: ... method you want Quick Config Manager to use 1 From the File menu select Device Access Quick Config Manager displays the Device Access dialog box as shown in Figure B 1 Figure B 1 Device Access Dialog Box 2 Select the access method 3 Enter the IP Address of the stack if network access is required 4 Click OK Quick Config Manager performs a Reset View The access method and IP address are stored and ...

Page 132: ...DUA1640 5AAA02 B 6 APPENDIX B MANAGEMENT USING QUICK CONFIG MANAGER Figure B 2 Quick Config Manager Window Map ...

Page 133: ...DUA1640 5AAA02 Quick Config Manager Window Map B 7 ...

Page 134: ...change the community string as soon as possible for security reasons use the Edit Access Levels dialog box but ensure you remember the community string as you cannot manage the hub without it To enter the community string 1 From the Configure menu select Community Polling Quick Config Manager displays the Community Polling dialog box as shown in Figure B 3 Figure B 3 Community Polling Dialog Box 2...

Page 135: ...ation remains with the hub and is used by its half the other half has no IP information You can configure more than one hub in a stack with IP information Doing this provides the stack with backup management should the stack split or a hub fail If you have no previous knowledge of IP refer to IP Addresses on page 5 7 The IP Setup dialog box has a useful Easy Setup option which takes you through th...

Page 136: ...yed If you have previously configured address information for the hub but want to go through the Easy Set Up option again you can start it by clicking on the Easy Set Up button If no previous IP information has been configured for the hub or the IP address is configured as 0 0 0 0 and the Enable IP box is checked the Easy Setup option is started If you want to enter information directly into the I...

Page 137: ...NT only and you change the IP address of the hub you need to change the Device Network IP Address entry in the Device Access dialog box refer to Accessing the Stack on page B 8 to continue managing the stack over the network If you are using SLIP Quick Config Manager over the console port ensure that Flow Control is not set to XON XOFF by default it is set to None Unless you need to connect to the...

Page 138: ...respective cascade segments For information on segments and how they work refer to Segments and Port Switching on page 1 8 To display the stack From the View menu select Zoom In Quick Config Manager displays a zoom view of the stack as shown in Figure B 5 If the zoom view is already open it is selected Figure B 5 Zoom View of the Stack In the Community Polling dialog box you can specify whether th...

Page 139: ...cal representation It shows these conditions Green RPS active and no faults Red RPS active but has one or more faults Identifying the Ports that are Connected to a Segment You can find out what ports in the stack are connected to a segment by clicking on that segment s name button on any of the hubs If the hub s segment is isolated from the cascade segment only ports that are connected to the hub ...

Page 140: ...double click on anything other than a port or button the General Info dialog box is displayed This is used to display and configure information about the stack Configuring Segments You can use Quick Config Manager to set up the segments within the stack to create workgroups For information on the segments and how they work refer to Segments and Port Switching on page 1 8 If you want to use load ba...

Page 141: ... Do one of the following Double click on the graphical representation of the stack but not on a port From the Configure menu select General Info 2 In the General Info dialog box select the Segment Conf category Quick Config Manager displays the Segment Configuration panel as shown in Figure B 6 Figure B 6 Segment Configuration Panel 3 Using the Unit pull down list box select the hub for which you ...

Page 142: ...e hub in the stack you want to configure segments for Segment Specify the segment in the hub that you want to configure Port Segment Select the ports you want to add to the segment The list shows what segments the ports are currently members of Segment Member Ports Shows the ports that are members of the segment Add Adds the highlighted ports in the Port LAN list to the Segment Member Ports list U...

Page 143: ...t switch refer to Segment Switch on page 2 2 This functionality in Quick Config Manager is not available if there is not a PS Hub 50 in the stack To configure the segment switch 1 Do one of the following Double click on the graphical representation of the stack but not on a port From the Configure menu select General Info 2 In the General Info dialog box select the Switch Conf category Quick Confi...

Page 144: ...Quick Config Manager installation program if it is running Windows 95 or Windows NT The Load Balancing Tool only works when used over the network in band from a Windows 95 or Windows NT management station The load balancing feature automatically detects any ports that are connected to switches and ensures that they are not moved You can prevent other ports from being moved by fixing them Note that...

Page 145: ...ments These menu options are described in the rest of this section Changing the Community Name When you launch the Load Balancing Tool Quick Config Manager passes it the community string that it is using so that the Load Balancing Tool can access the stack If you ever change the community string in Quick Config Manager while the Load Balancing Tool is running in the background you need to change t...

Page 146: ...dwidth is being used There is one utilization bar for Each cascaded and isolated segment For example if you have a stack with two isolated segments as shown in Figure B 10 the Current Utilization page would have six separate segment bars four for the cascaded segments and two for the isolated segments The total traffic Represents the bandwidth being utilized across all segments in the stack as a p...

Page 147: ... cascaded and isolated segments The graph displays the values as percentages When the PS Hub is powered on it starts recording the values for each segment When you view the Utilization History page information that has already been recorded is displayed If the PS Hub has only just been powered on the graph will not display much information The graph is updated on each poll if new information is av...

Page 148: ...s that frequently communicate with each other on the same cascaded segment Figure B 12 Utilization Before and After Load Balancing Polling You can change the rate at which the Load Balancing Tool updates its utilization information called polling To do this 1 From the Configure menu select Polling The Load Balancing Tool displays the Polling dialog box 2 Use the Enable Polling check box to enable ...

Page 149: ...s that contain users that communicate frequently You may also want to fix ports that have network equipment other than workstations connected directly to them It is a good idea to fix ports that are Used to connect your management station to the stack this port must remain on segment 1 Connected to switches servers and receivers of network traffic for example printers Segments To fix or unifx a se...

Page 150: ...or the segment as shown in Figure B 13 The dialog box shows a list of all the ports in the stack that are part of that segment and whether they are currently fixed or unfixed Figure B 13 Port Configuration Dialog Box For a Segment 3 Click on a port or on multiple ports while dragging the mouse pointer over the entries or using Ctrl in the list to highlight the port s and then click Fix or Unfix to...

Page 151: ...ing during quiet periods of network activity possibly at night To really benefit from load balancing it is a good idea not to perform load balancing too often A suggested rate is every 24 hours CAUTION The equipment connected to the ports that are moved by load balancing must have their MAC addresses relearnt by the PS Hub 50 or external switch so a small amount of packet loss may occur while thes...

Page 152: ...isabled and the Frequency and Balance At fields are disabled 3 Use the Frequency field to enter how many hours you want between each automatic load balance 4 Use the Balance At field to enter a the utilization level at which you want the load balancing feature to automatically start should any segment exceed this level 5 Click Apply to send the changes to the units in the stack before closing the ...

Page 153: ...cumentation that accompanies your terminal or modem If you change the settings by accident click Cancel to exit from the panel without changing anything If you are managing a stack of hubs this panel shows and affects the settings of the hub which is unit number 1 in the stack the bottom hub if the stack is correctly configured To make a different hub unit number 1 disconnect the stack in such a w...

Page 154: ...es for each hub To upgrade the stack 1 From the Configure menu select Upgrade Quick Config Manager displays the Software Upgrade dialog box as shown in Figure B 14 This dialog box shows the units in the stack and the version of agent software that they are running At the bottom of the dialog box the state of the previous software upgrade is displayed the text is grayed out if there is a unit in th...

Page 155: ...a successful local management connection you need to use a standard null modem cable and have the hub s console port set to 9600 baud or auto configuration enabled These are the default settings For information on the console port settings refer to Changing the Console Port Settings on page B 27 It may be that you have made your management connection to a serial port on your management station whi...

Page 156: ...ork it may be that Quick Config Manager s line speed has become unsynchronized with that of the hub To resolve this problem make Quick Config Manager use a different speed by changing the SerialAttrib entry to SerialAttrib COM1 line speed n 8 1 under the slip section of the QUICKMGR INI file and restart Quick Config Manager You forget your community string Contact your supplier You cannot access t...

Page 157: ... using the serial web utility refer to Solving Problems With the Serial Web Utility on page C 4 Installing the Serial Web Utility The serial web utility can be installed on to a management station that already has other Transcend management applications installed on it The default directory into which the serial web utility is installed is C Program Files 3Com 3Com Serial Web This can be changed d...

Page 158: ...g all of the settings the serial web utility will use when it is run These default settings are already correct for connection to the hub so you should not need to change them The fields are Connection name Allows you to enter a name for the connection Modem name Allows you to enter a name for the modem connection PC SLIP Address The SLIP address that is to be allocated to the management station T...

Page 159: ... box which allows you to view and change some of the settings the serial web utility uses when it is run License agreement Using the Serial Web Utility Every time you want to access the web interface through a serial link make your management connection refer to Web Interface on page 5 12 and use the serial web utility to set up your connection 1 Either Double click on the Serial Web Management sh...

Page 160: ...ables You Can Use on page A 4 The following settings are different on your hub and management station Flow control Speed baud rate The hub has automatically configured its communication speed but you have subsequently changed the speed configured on your management station the device only automatically configures the speed the first time it connects You have selected the wrong COM port on your man...

Page 161: ... any problems using the agent upgrade utility refer to Solving Problems With the Agent Upgrade Utility on page D 3 Using the Upgrade Utility The upgrade utility works from an MS DOS prompt It upgrades one hub at a time Upgrading a hub may take up to 5 minutes To upgrade agent software to a hub 1 Connect your PC s serial COM port to the hub s console port using a null modem cable 2 If you are using...

Page 162: ...ew the contents of the CD ROM to see the filename for this version of agent software You can also use the following parameter with the upgrade command to specify the serial COM port to use for the PC The default for this is COM 1 c 1 or c 2 An example of the upgrade command with this parameter is update c 1 pshxx_yy bin 5 Power off the hub 6 Press Return 7 Power on the hub immediately within 5 sec...

Page 163: ... not connected to the hub s COM port The null modem cable is not connected to the PC s serial port or the serial port being used is not the same as the serial port specified in the upgrade command The hub was not powered off and on as directed Retry the command ensuring that you follow all the steps An error occurred when the utility tried to open the agent software file for reading There could be...

Page 164: ...ed from the hub or the PC during the file transfer Reconnect the cable and start again Power to the hub has been disrupted during the file transfer Check the power connection to the hub and start again An incorrect file has been specified and transferred to the hub Check the filenames and start again The utility must be run from MS DOS It cannot be used from an MS DOS Window within Microsoft Windo...

Page 165: ...in Board Service 3ComBBS 3ComFactsSM automated fax service 3ComForum on CompuServe online service World Wide Web Site Access the latest networking information on 3Com Corporation s World Wide Web site by entering our URL into your Internet browser http www 3Com com This service features the latest information about 3Com solutions and technologies customer service and support news about the company...

Page 166: ...4 hours a day 7 days a week Call 3ComFacts using your Touch Tone telephone using one of these international access numbers Country Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 Brazil up to 14400 bps 55 11 547 9666 France up to 14400 bps 33 1 6986 6954 Germany up to 28800 bps 4989 62732 188 Hong Kong up to 14400 bps 852 2537 5608 Italy fee required up to 14400 bps 39 2 273006...

Page 167: ...es including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready A list of system hardware and software including revision levels Diagnostic error messages Details about recent configuration changes if applicable If you are unable to contact your network supplier see ...

Page 168: ...lands 32 2 725 0202 31 30 6029700 3Com Canada Calgary Montreal Ottawa Toronto Vancouver 403 265 3266 514 683 3266 613 566 7055 416 498 3266 604 434 3266 3Com European HQ 49 89 627320 3Com France 33 1 69 86 68 00 3Com GmbH Austria Czech Republic Slovak Republic Germany Central European HQ Hungary Poland Switzerland 43 1 513 4323 420 2 21845 800 49 30 34 98790 Berlin 49 89 627320 Munich 36 1 250 83 ...

Page 169: ...umber Products sent to 3Com without RMA numbers will be returned to the sender unopened at the sender s expense To obtain an RMA number call or fax 04 22 97 Country Telephone Number Fax Number U S A and Canada 1 800 876 3266 option 2 408 764 7120 Latin America 1 408 326 2927 408 764 7120 Europe South Africa and Middle East 44 1442 438125 44 1442 435822 Elsewhere 1 408 326 2926 1 408 764 7120 ...

Page 170: ......

Page 171: ...e protocol can assign the subnet mask and default gateway to a device bridge mode One of the segment switch s operating modes which conforms to the IEEE 802 1d specification Refers to the process of forwarding all packets with unknown addresses to all of the segments except the segment that the packet was received from broadcast A message sent to all destination devices on the network broadcast st...

Page 172: ...lls security restrictions imposed on incoming traffic IP address Internet protocol address A unique identifier for a device attached to a network using TCP IP The address is written as four octets separated with full stops periods and is made up of a network section an optional subnet section and a host section IPX Internetwork Packet Exchange A protocol allowing communication in a NetWare network...

Page 173: ...tch database by the ageing process protocol A set of rules for communication between devices on a network The rules dictate format timing sequencing and error control resilience Tolerance For example the PS Hub s cascaded cables make a stack of PS Hubs resilient because you can power off a unit without it affecting the other units in the stack You can also build resilience into your network by hav...

Page 174: ...al load on the network management station and reduce management oriented traffic on the network SNMP Simple Network Management Protocol A protocol originally designed to be used in managing TCP IP internets SNMP is presently implemented on a wide range of computers and networking equipment and may be used to manage many aspects of network and end station operation stack A group of hubs which are c...

Page 175: ...niform Resource Locator A URL is a unique address of a Web page Using just the URL your Web browser can find Web pages on the World Wide Web VT100 A type of terminal which uses ASCII characters VT100 screens have a text based appearance web See World Wide Web World Wide Web The World Wide Web often known as the Web is a global network which is part of the Internet It is made up of thousands of dif...

Page 176: ...6 GLOSSARY ...

Page 177: ... 1 8 Attn LED 7 11 auto configuration 5 8 automatic load balancing B 26 avoiding congestion 1 10 B BABT approvals A 1 balancing the segments 4 1 baud rate 5 8 7 14 before you start 3 4 benefits of switching 1 10 bitmap B 12 blanking plate 3 1 BOOTP 7 12 server B 10 box contents 3 4 brackets 3 9 bridge mode 2 4 browser 5 12 building up network 1 4 workgroups 1 8 built in management 1 4 resilience 3...

Page 178: ... box 3 4 controlling the CLI 6 5 conventions notice icons About This Guide 2 text About This Guide 3 correcting faults 8 1 creating flexible workgroups 1 9 crossover 10BASE T cable 3 5 A 3 current utilization B 20 D data bits 5 8 default setting for segment switch 2 4 SLIP address 5 7 user names and passwords 6 3 default router 6 8 7 12 defaults returning to 6 11 7 20 Device Access dialog box B 5 ...

Page 179: ... module ports work 2 6 PS Hubs differ 2 1 how the segment switch works 2 3 how to use hub 1 4 LEDs and ports 3 2 hub accessing B 8 connecting another PS Hub 3 12 connecting equipment 3 11 connections 3 5 double clicking B 14 features 1 2 general information 1 1 graphical representation B 12 how you can use it 1 4 installing 3 6 IP address B 9 LEDs 3 1 load balancing 4 1 MAC address 3 7 management ...

Page 180: ...ns 5 5 distributed 1 5 features 1 3 methods 5 5 settings A 6 software 1 8 software upgrading 7 24 tasks 5 2 Management Address page 7 12 Management Settings pages 7 17 management station 5 1 COM port B 4 managing requirements 5 6 the hub 5 2 web interface 7 1 with Quick Config Manager B 1 map Quick Config Manager B 5 web interface 7 6 MDI MDIX switch 1 4 1 6 3 2 3 5 3 11 3 16 7 23 menu structure f...

Page 181: ...ipment 3 17 problem solving 8 1 problems using Command Line Interface 8 3 using IP IPX based network management application 8 5 using Quick Config Manager B 29 using serial web utility C 4 using SNMP network management application 8 5 using the hub 8 2 using the web interface 8 4 product number cables A 6 hub 3 7 PS Hub 40 transceiver module ports 2 2 PS Hub 50 1 6 PS Hub 50 segment switch 2 2 PS ...

Page 182: ...ver B 29 setting up IP information 6 8 online help system and documentation 7 9 settings console port 5 8 displaying 6 9 management station A 6 shared Ethernet workgroups 1 10 sheet of labels 3 7 siting your hub 3 6 SLIP address 5 7 6 8 driver C 1 subnet mask 6 8 small network building 1 4 SNMP 5 5 network management application problems 8 5 socket power 3 2 Redundant Power System 3 1 3 2 software...

Page 183: ... URL 7 2 E 1 user name 7 2 default 6 3 users grouping 1 8 increasing the number of connections 1 5 using 10BASE T cable 3 11 agent upgrade utility D 1 cascade cables 3 14 CLI 6 4 Command Line Interface 6 1 external switch 4 3 Hot Swap Cascade Units 3 15 hub 3 1 labels 3 7 LEDs 3 2 network management 5 1 ports 3 2 Quick Config Manager B 1 rubber feet 3 6 serial web utility C 1 Telnet terminal emula...

Page 184: ...8 INDEX workgroups 1 4 1 7 building up 1 8 example 1 11 workstation connections 3 4 World Wide Web WWW E 1 Z Zoom View B 8 B 12 B 16 ...

Page 185: ...f ninety 90 days from the date of purchase from 3Com or its Authorized Reseller 3Com warrants the media containing software against failure during the warranty period No updates are provided 3Com s sole obligation with respect to this express warranty shall be at 3Com s discretion to refund the purchase price paid by Customer for any defective software products or to replace any defective media wi...

Page 186: ...Y LAW 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY WHETHER BASED IN CONTRACT OR TORT INCLUDING NEGLIGENCE FOR INCIDENTAL CONSEQUENTIAL INDIRECT SPECIAL OR PUNITIVE 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 O...

Page 187: ... toutes les exigences du Règlement sur le matériel brouilleur du Canada VCCI STATEMENT 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 Reorient the receiving antenna Relocate the equipment w...

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