3Com 3C16710 User Guide
3Com 3C16710 - OfficeConnect 8/TPM Hub Manual
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16710.bk : FRONT.FRM Page 1 Tuesday, October 7, 1997 11:38 AM OFFICECONNECT® HUB 8/TPM 3C16710 USER GUIDE Part No. DUA1671-0AAA03 Published October 1997 - 3Com 3C16710 | User Guide - Page 2
C.F.R. 52.227-7013. 3Com Technologies, c/o 3Com Centre, Boundary Way, Hemel Hempstead, Herts, HP2 7YU, UK. For civilian agencies: 3Com, OfficeConnect, NetAge, SmartAgent and Transcend are registered trademarks of 3Com Corporation. 3ComFacts and Ask3Com are service marks of 3Com Corporation - 3Com 3C16710 | User Guide - Page 3
Equipment to Your Hub 2-7 Connecting OfficeConnect Hubs Together 2-8 Spot Checks 2-11 ABOUT NETWORK MANAGEMENT 3Com Network Management 3-1 Why Manage Your Hub? 3-2 Connecting to the Hub and Managing 3-3 Managing Through the Console Port 3-4 Managing Over the Network 3-6 Remote Management Service 3-7 - 3Com 3C16710 | User Guide - Page 4
4-2 Running Quick Config Manager 4-2 Configuring Multiple Hubs 4-3 Quick Config Manager Window Map 4-3 Accessing the Hub 4-6 Giving the Hub an IP Address 4-7 Resetting the Hub 4-11 Initializing the Hub 4-11 Viewing the Hub 4-12 Displaying Information About the Hub 4-13 Setting Up the Alert LED 4-15 - 3Com 3C16710 | User Guide - Page 5
B-5 IPX Addresses B-6 TECHNICAL SUPPORT Online Technical Services C-1 World Wide Web Site C-1 3Com Bulletin Board Service C-1 3ComFacts Automated Fax Service C-2 3ComForum on CompuServe Online Service C-3 Support from Your Network Supplier C-4 Support from 3Com C-4 Returning Products for Repair - 3Com 3C16710 | User Guide - Page 6
16710.bk : 16710.TOC Page vi Tuesday, October 7, 1997 11:38 AM - 3Com 3C16710 | User Guide - Page 7
. Follow all instructions carefully. Please read carefully the following information before installing the OfficeConnect® hub: s Exceptional user-serviceable parts inside the hub. If you have a physical problem with the unit that cannot be solved with problem solving actions in this guide, contact - 3Com 3C16710 | User Guide - Page 8
des Hubs geachtet werden. s Stapeln Sie den Hub nur mit anderen OfficeConnect Hubs zusammen. s Verwenden Sie nur das mit dem Hub mitgelieferte oder zu wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Hub haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden - 3Com 3C16710 | User Guide - Page 9
instructions avec soin. Veuillez lire à fond l'information suivante avant d'installer le moyeu: s Le soin exceptionnel doit être pris pendant l'installation et l'enlèvement du moyeu. s Seulement entasser le moyer avec les autres moyeux OfficeConnects èmes dans ce guide, contacter votre fournisseur - 3Com 3C16710 | User Guide - Page 10
must enter them manually. For information on configuring the hub's address settings, see "Giving the Hub an IP Address" on page 4-7. Parameter Device Name Emergency Contact Support Contract IP Address Default 3Com 3Com 3Com 0.0.0.0 Subnet Mask Serial Line IP Address Subnet Mask Router IP Address - 3Com 3C16710 | User Guide - Page 11
can manage your hub Managing your hub using 3Com's Transcend® Quick Configuration Manager Additional management using VT100 Problem solving Dimensions, standards and cabling Network addressing (IP/IPX) The OfficeConnect product range, obtaining technical support, and 3Com repair services Turn to - 3Com 3C16710 | User Guide - Page 12
this guide, it means type something, then press the Return or Enter key. Do not press the Return or Enter key when an instruction simply says represent commands commands that you enter, for example: 191.0.0.172 Keys When specific keys are referred to in the text, they are called out by their - 3Com 3C16710 | User Guide - Page 13
The OfficeConnect® product range from 3Com changed this, bringing networks to the small office. The OfficeConnect Hub 8/TPM is 3Com provides easy access to technical support information through a variety of services. This appendix describes these services." on page C-1. A single OfficeConnect hub - 3Com 3C16710 | User Guide - Page 14
7, 1997 11:38 AM 1-2 CHAPTER 1: INTRODUCTION a stack (each hub is a single repeater). The OfficeConnect Hub 8/TPM has eight 10BASE-T ports and a ninth 10BASE-2 (Coax) port. This guide helps you get the most out of your hub. Networking Terminology A Network is a collection of workstations (for - 3Com 3C16710 | User Guide - Page 15
data part of a packet. It is the information that is seen by the hub. Collisions are a part of normal Ethernet operation and occur if two or more time. A sudden sustained increase in the number of collisions can indicate a problem with a device, particularly if it is not accompanied by a general - 3Com 3C16710 | User Guide - Page 16
16710.bk : GETSTART.FRM Page 4 Tuesday, October 7, 1997 11:38 AM 1-4 CHAPTER 1: INTRODUCTION IP (Internet Protocol) is a data communication protocol used to connect computers and data equipment into computer networks. It is used on a large international network called the Internet, which is - 3Com 3C16710 | User Guide - Page 17
problem with your network The ports are shown in Figure 2-2, and are used for: s Connecting workstations and other equipment to your hub s Connecting your hub to another OfficeConnect hub s Connecting a management station to your hub Figure 2-1 and Figure 2-2 also appear on the Quick Reference Guide - 3Com 3C16710 | User Guide - Page 18
16710.bk : CREYRNET.FRM Page 2 Tuesday, October 7, 1997 11:38 AM 2-2 CHAPTER 2: CREATING YOUR NETWORK Figure 2-1 The LEDs And How To Use Them - 3Com 3C16710 | User Guide - Page 19
16710.bk : CREYRNET.FRM Page 3 Tuesday, October 7, 1997 11:38 AM LEDs and Ports 2-3 Figure 2-2 The Ports And How To Use Them - 3Com 3C16710 | User Guide - Page 20
power adapter for use with the OfficeConnect hub s A Warranty Registration card for you to fill out and return s Four rubber feet s Four stacking clips s One 3.5" Transcend® Quick Configuration Manager disk s A Quick Reference Guide s This guide Workstation Connections To connect workstations and - 3Com 3C16710 | User Guide - Page 21
'T' pieces but 'Y' pieces provide adequate clearance of the other ports. s Two 10BASE-2 50 Ohm terminators (end pieces). Positioning the OfficeConnect Hub When installing your OfficeConnect hub, ensure: s It is out of direct sunlight and away from sources of heat. s Cabling is away from power lines - 3Com 3C16710 | User Guide - Page 22
around on your desk. Stick the feet to the marked areas at each corner of the underside of your hub. The four stacking clips are used for neatly and securely stacking your OfficeConnect units together. You can stack up to a maximum of four units. Large units must be stacked below small units - 3Com 3C16710 | User Guide - Page 23
Page 7 Tuesday, October 7, 1997 11:38 AM Wall Mounting the OfficeConnect Hub 2-7 Wall Mounting the OfficeConnect Hub There are two slots on the underside of the OfficeConnect hub which are used for wall mounting. You can mount the hub with the LEDs facing upwards or downwards, to suit your needs - 3Com 3C16710 | User Guide - Page 24
all port connections, so you can start using your network immediately. When you need more ports, simply add more OfficeConnect hub s. If you are using port 8 to connect a workstation, ensure the MDI/MDIX switch is set to MDIX. If you do not use the 10BASE-2 (Coax) port, you do not need to terminate - 3Com 3C16710 | User Guide - Page 25
adequate clearance of the other ports. Connect a 10BASE-2 'Y' piece to each of your hubs. Daisy-chain each 'Y' piece with 10BASE-2 (Coax) cable to form a single segment, unlock it, and remove it. Connecting OfficeConnect Hubs Together 2-9 Figure 2-4 Correct Hub Connections Using 10BASE-2 (Coax) - 3Com 3C16710 | User Guide - Page 26
from the bottom, connect port 8 of the lower hub to port 7 of the hub immediately above. Repeat for each hub, as shown in Figure 2-5. 2 Set all MDI/MDIX switches to MDI (in) except for the top hub (the one with port 8 not connected to another hub). This unused port can be connected to a workstation - 3Com 3C16710 | User Guide - Page 27
Tuesday, October 7, 1997 11:38 AM Spot Checks 2-11 Checking Hub Connections When you have connected your hubs, power them on. The Port Status LEDs for the ports this is the best way to find out if there are problems with your network s Case vents are not obstructed s Cabling is secure and not pulled - 3Com 3C16710 | User Guide - Page 28
16710.bk : CREYRNET.FRM Page 12 Tuesday, October 7, 1997 11:38 AM 2-12 CHAPTER 2: CREATING YOUR NETWORK - 3Com 3C16710 | User Guide - Page 29
network. Each OfficeConnect® Hub 8/TPM is a separate manageable entity, that means you manage each OfficeConnect Hub 8/TPM individually. This chapter lists the management tasks you can perform, and describes the ways you can connect your management station to your hub. This guide uses 'Management - 3Com 3C16710 | User Guide - Page 30
NETWORK MANAGEMENT information through a variety of services. This appendix describes these services." on page C-1. Why Manage Your Hub? With management, you can change and view the way your hub and network operates: s Configure IP information for the hub so that an IP-based network management - 3Com 3C16710 | User Guide - Page 31
management application (for example, Transcend Enterprise Manager), reporting the state of the hub and the network. s Use the hub to monitor other devices on your network and report any deviation from their normal as part of your management connection, see "Remote Management Service" on page 3-7. - 3Com 3C16710 | User Guide - Page 32
the autoconfiguration function detects is 19200 baud. You need to use a null modem cable for connection to the hub's console port. This is available from your supplier. The null modem cable must: s Have a 9 . For information on managing through modems, see "Remote Management Service" on page 3-7. - 3Com 3C16710 | User Guide - Page 33
on installing and using Quick Config Manager. Using a VT100 Terminal Emulator Connect one end of the null modem cable to the console port on the hub, and the other to the serial (RS232) port on your management station. You need to set the character size (8), stop bit (1) and parity (none) settings - 3Com 3C16710 | User Guide - Page 34
-based Network Management Application 3Com's Transcend network management applications enable you to get the best out of your hub. Any IP/IPX-based network management application can manage the hub. The use of IP/IPX-based network management applications is not described in this manual. Refer to the - 3Com 3C16710 | User Guide - Page 35
Management Service The OfficeConnect hub has hub or network is operating incorrectly. This allows your supplier to know immediately when certain problems occur, so they can act on it, leaving you to carry on with your work. Contact your supplier to find out if they are offering a support service - 3Com 3C16710 | User Guide - Page 36
16710.bk : ABOUTMAN.FRM Page 8 Tuesday, October 7, 1997 11:38 AM 3-8 CHAPTER 3: ABOUT NETWORK MANAGEMENT - 3Com 3C16710 | User Guide - Page 37
that has the same useful information as this chapter. Before you can manage with Quick Config Manager, you must make a connection to the hub's console port, see Chapter 3. In the descriptions of the options given in this chapter, the default values are underlined. Installing Quick Config Manager - 3Com 3C16710 | User Guide - Page 38
16710.bk : MANAGING.FRM Page 2 Tuesday, October 7, 1997 11:38 AM 4-2 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER Installation Procedure Quick Config Manager can be installed on its own or on to a workstation that already has other Transcend® management - 3Com 3C16710 | User Guide - Page 39
a new OfficeConnect® Hub 8/TPM without needing to close and reopen Quick Config Manager. This is particularly useful if you have many OfficeConnect hubs that need accessed. This diagram also appears on the Quick Reference Guide. The number at the top right-hand side of each window refers to the - 3Com 3C16710 | User Guide - Page 40
16710.bk : MANAGING.FRM Page 4 Tuesday, October 7, 1997 11:38 AM 4-4 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER Figure 4-1 Quick Config Manager Window Map - 3Com 3C16710 | User Guide - Page 41
16710.bk : MANAGING.FRM Page 5 Tuesday, October 7, 1997 11:38 AM Quick Config Manager Window Map 4-5 - 3Com 3C16710 | User Guide - Page 42
.FRM Page 6 Tuesday, October 7, 1997 11:38 AM 4-6 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER Accessing the Hub The OfficeConnect Hub 8/TPM uses community strings as a security measure, to check management access to the hub. The community string you use must match one of the community - 3Com 3C16710 | User Guide - Page 43
/ 60 The time in minutes between consecutive updates of the graphical representation of the hub. If Off is selected, the bitmap is not updated at all (you can is used to set up IP information and change the SLIP address for the hub. The IP Setup dialog box has a useful Easy Setup option which takes - 3Com 3C16710 | User Guide - Page 44
-Up button. s 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 select Abort. The Easy Setup option asks you if you want to manually configure the hub for IP. If you have a BOOTP server (that automatically allocates IP - 3Com 3C16710 | User Guide - Page 45
the front of this User Guide for doing this, called "Your Hub Addresses". Device Configuration Shows the following: Hub an IP Address 4-9 s Support Contract - Provides a box for you to type the ID number of any technical support contract you may have. The default entries for these three fields is '3Com - 3Com 3C16710 | User Guide - Page 46
. If you require more information about SLIP, read the Internet Activities Board document RFC 155. Router IP Address Enter the IP address of the router (if you have one) which is used by the hub to communicate with other networks. Manager IP Address Enter the IP address of a management station that - 3Com 3C16710 | User Guide - Page 47
October 7, 1997 11:38 AM Resetting the Hub 4-11 Resetting the Hub Resetting the hub simulates switching the hub off and on. You may want to reset the hub if you want to: s Apply any changes made to the hub's IP configuration. s Resets the hub's statistics counters. CAUTION: Performing a reset may - 3Com 3C16710 | User Guide - Page 48
view immediately, without waiting for a poll, select Update Zoom from the File menu. Double-clicking on the Zoom View You can configure information for the hub by double-clicking on the zoom view: s If you double-click on a port, the Port dialog box is displayed. This is used to configure - 3Com 3C16710 | User Guide - Page 49
by an SNMP network management station. To display this information: 1 Do one of the following: s Double-click on the graphical representation of the hub (but not on a port). s From the Configure menu, select General Info... 2 In the General Info dialog box, select the MIB II category. Quick Config - 3Com 3C16710 | User Guide - Page 50
contacted in the event of a problem with the hub. sysName Provides a box for you to type the name of the hub. sysContact and sysName use the same Hub an IP Address" on page 4-7. sysLocation Provides a box for you to type the location of the hub. sysServices Shows the services that the hub supports. - 3Com 3C16710 | User Guide - Page 51
38 AM Setting Up the Alert LED The Alert LED can warn you of potential problems with your network. Quick Config Manager allows you to: s Test the Alert LED. unsuccessful login attempt occurs, or a device that is not known to your hub tries to communicate with it, a violation occurs. This may be due - 3Com 3C16710 | User Guide - Page 52
disable to Alert LED Test. To do this, select Disable and click on OK. The Alert LED now reflects the current Alert condition of the hub. UTP Port Partition Enabled / Disabled Allows you to specify whether the Alert LED lights if a UTP port becomes partitioned, which happens if a network loop occurs - 3Com 3C16710 | User Guide - Page 53
Disabled Allows you to specify whether the Alert LED lights if a login violation occurs, which happens if a user attempts to log on to your hub using the VT100 screens with an invalid username/password combination three consecutive times. If this condition caused the Alert LED to light, the LED goes - 3Com 3C16710 | User Guide - Page 54
18 Tuesday, October 7, 1997 11:38 AM 4-18 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER Network Utilization High / Med / Low / Disabled for spotting and isolating any potential network problems you may have. To view general information for the hub, see "Displaying Information About the - 3Com 3C16710 | User Guide - Page 55
you to display the total network activity and errors seen by a port or the hub (all ports) in any one time period. To display the Activity/Errors graph box. 4 Click on OK. To display the Activity/Errors graph for the hub: s From the View menu, select Activity/Errors. Quick Config Manager displays - 3Com 3C16710 | User Guide - Page 56
October 7, 1997 11:38 AM 4-20 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER Total Errors Shows the total number of errors same time. A sudden sustained increase in the number of collisions can indicate a problem with a device, particularly if it is not accompanied by a general increase in - 3Com 3C16710 | User Guide - Page 57
Info category. 3 In the Repeater Port Info panel, select the Frames check box. 4 Click on OK. To display the Frame Types pie chart for the hub: s From the View menu, select Frame Types. Quick Config Manager displays the Frame Types pie chart, as shown in Figure 4-8. Figure 4-8 Frame Types Pie - 3Com 3C16710 | User Guide - Page 58
page 4-6. Network Traffic Statistics Quick Config Manager allows you to display the network traffic as a percentage of the total possible traffic for a port or the hub (all ports) in any one time period. To display the Network Traffic graph for a port: 1 Double-click on the port for which you want - 3Com 3C16710 | User Guide - Page 59
Traffic Graph Monitoring 4-23 Network Errors Statistics Quick Config Manager allows you to display the numbers of frames with errors seen by a port or the hub (all ports) in any one time period. To display the Network Errors graph for a port: 1 Double-click on the port for which you want to - 3Com 3C16710 | User Guide - Page 60
percentage of the total traffic. If it is not, change the transceivers or network adapters of devices connected to the hub to see if this eliminates the problem. FCS errors can also be caused by electrical interference from other cables or machinery. Alignment Shows the number of frames received - 3Com 3C16710 | User Guide - Page 61
or network adapter in the device to see if this eliminates the problem. Rate Mismatch Shows the number of frames whose timing was outside the period, not per second. To change the poll period, see "Accessing the Hub" on page 4-6. Configuring a Port Quick Config Manager allows you to configure how - 3Com 3C16710 | User Guide - Page 62
, October 7, 1997 11:38 AM 4-26 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER You can configure a port so that it sends are attached to each port of the hub. To configure a port: 1 From the View menu, select Zoom In to display the representation of the hub. 2 Double-click on the port you - 3Com 3C16710 | User Guide - Page 63
16710.bk : MANAGING.FRM Page 27 Tuesday, October 7, 1997 11:38 AM 5 Select either Enable or Disable for Link Traps, Partition Traps, and Learn Stations. 6 Click on OK. In the Repeater Port Info panel: Media Type Shows the type of media connected to the port. Partition State Shows whether the port - 3Com 3C16710 | User Guide - Page 64
MANAGING YOUR HUB USING QUICK CONFIG MANAGER Hub Security The OfficeConnect Hub 8/TPM provides flexible Hub - Configure security for one or more ports at a time. The way you set up your security depends on what you want to do. For example, if you have one device connected to a specific - 3Com 3C16710 | User Guide - Page 65
29 Configuring Security at Port Level To configure security for a port: 1 From the View menu, select Zoom In to display the representation of the hub. 2 Double-click on the port for which you want to configure security. Quick Config Manager displays the Port Configuration dialog box. 3 In the Port - 3Com 3C16710 | User Guide - Page 66
, October 7, 1997 11:38 AM 4-30 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER s MAC Address - Allows you to enter the learned previously. The port never automatically switches to full security (for example Auto Learn), you have to do this manually. While learning, packets received on a - 3Com 3C16710 | User Guide - Page 67
frames are forwarded to the selected port. If the port does not support configurable Need To Know, these options are grayed out: s Disabled - Security at Hub Level To configure security for a hub: 1 Do one of the following: s Double-click on the graphical representation of the hub (but not - 3Com 3C16710 | User Guide - Page 68
7, 1997 11:38 AM 4-32 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER Figure 4-13 Security Configuration Panel Quick security setup is complete. In the Security Configuration panel at hub level: s Available - This lists the hub's ports, identifying them by port number and media type. - 3Com 3C16710 | User Guide - Page 69
another link (called the main link) fails, as shown in Figure 4-15. This pair is called a resilient link pair. Figure 4-14 A Failed Link Between Two Hubs Figure 4-15 A Resilient Link Pair - 3Com 3C16710 | User Guide - Page 70
requirements; always connect an MDIX port to an MDI port, setting the MDIX switch as appropriate, see "Connecting Hubs Using 10BASE-T" on page 2-10. When your network is in use, the hub that has been used to set up the resilient link pair, monitors the state of both the main link and the - 3Com 3C16710 | User Guide - Page 71
you must always follow the hub connection requirements when linking hubs together, which involves the use of port 8 and the MDI/MDIX switch. If port 8 is on doing this. To set up a resilient link pair: 1 Disconnect the hub which is to provide the standby port from the network. We recommend you do - 3Com 3C16710 | User Guide - Page 72
16710.bk : MANAGING.FRM Page 36 Tuesday, October 7, 1997 11:38 AM 4-36 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER In the Resilience Links panel: Main Port Shows the port number of the main link. Standby Port Shows the port number - 3Com 3C16710 | User Guide - Page 73
can be used to monitor other devices on your network, and to notify an IP/IPX-based network management application should a problem occur with a device attached to it. The hub notifies the IP/IPX-based network management application by sending SNMP traps (messages) to it. If you have a large network - 3Com 3C16710 | User Guide - Page 74
dialog box, enter the IP or IPX address of the device that you want the hub to poll. 5 Choose the rate at which the device is to be polled. If be enabled or disabled. You can have up to 10 polling session entries for the hub (poll 10 different devices), all of which can be enabled. If you do not - 3Com 3C16710 | User Guide - Page 75
but is not communicating. s Blue - Device not being polled by the hub. In the WorkGroup Monitor panel: Address Shows the addresses of the polled respond to the last poll. Information Shows the number of routers through which the hub communicates with the device or any information gathered during the - 3Com 3C16710 | User Guide - Page 76
16710.bk : MANAGING.FRM Page 40 Tuesday, October 7, 1997 11:38 AM 4-40 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG MANAGER - 3Com 3C16710 | User Guide - Page 77
the options given in this chapter, the default values are underlined. VT100 User Interface We suggest you read through this section before you use the hub's VT100 facility for the first time. Afterwards, you should only need it for reference. Screens Screens are divided into three main areas: s The - 3Com 3C16710 | User Guide - Page 78
bottom. To select a button, move the cursor to the button and press [Return]. The OK and CANCEL buttons appear on many screens. OK updates the hub according to the data in the fields of the screen, then returns you to the previous screen. CANCEL returns you to the previous screen without - 3Com 3C16710 | User Guide - Page 79
, or that they activate other functions. The Windows terminal emulator uses [Ctrl]+[H] as backwards deletion, whereas others use it for backward cursor movement. Consult the manual accompanying your Telnet or terminal emulation software before using the control keys. - 3Com 3C16710 | User Guide - Page 80
at Unit level, you are managing or viewing the hub. s Port - If you manage at Port level, you set up parameters and examine statistics for individual ports. This allows you to manage individual users or small workgroups. 3Com's OfficeConnect® range can be physically stacked but not logically stacked - 3Com 3C16710 | User Guide - Page 81
16710.bk : MANVT100.FRM Page 5 Tuesday, October 7, 1997 11:38 AM Screen Map 5-5 Figure 5-1 VT100 Screen Map - 3Com 3C16710 | User Guide - Page 82
) to the console port, you need to perform the wake-up procedure. To do this, press [Return][Return] at the terminal. By default, the hub automatically configures the baud rate of its console port to operate with the connected terminal or modem, provided the parity, stop bits and character size - 3Com 3C16710 | User Guide - Page 83
your terminal is set up to operate with the same parameters that the hub's console port uses. The console port's autoconfigure option only operates if your . If you cannot resolve the problem, refer to "Problems When Using VT100" on page 6-3 for more problem solving information. Logon You must - 3Com 3C16710 | User Guide - Page 84
log on as 'manager' and 'monitor' to change their passwords. For information on how to change a password, see "Editing Users" on page 5-18. Initializing the hub returns the passwords to their default values. If you are not logging on as one of the default users, your system manager has assigned you - 3Com 3C16710 | User Guide - Page 85
16710.bk : MANVT100.FRM Page 9 Tuesday, October 7, 1997 11:38 AM Getting Started 5-9 Main Menu The Main Menu, as shown in Figure 5-4, is used for accessing the various VT100 screens. Figure 5-4 Main Menu If you are using the management facility for the first time, we suggest that you: s Set up - 3Com 3C16710 | User Guide - Page 86
has a BOOTP server, or enter it manually. If you change the device IP address, you must reset the hub to effect the change. CAUTION: To ensure change this field, reset the hub to effect the change. Default Router If necessary, enter the IP address of the default router on your network. BOOTP does - 3Com 3C16710 | User Guide - Page 87
allows you to download the IP address, the SubNet Mask, and the Router IP address from a BOOTP server on your network. When operative, BOOTP reply is received s You enter the address manually When the IP parameters have been received, the hub resets automatically. The following four fields are used - 3Com 3C16710 | User Guide - Page 88
Main Menu. If you have changed the parameters, you need to reset the hub to effect the changes. SETUP TRAPS Press [Return] when the SETUP TRAPS button management application which inform the network manager of the status of your hub. Figure 5-6 Trap Setup Screen Your Transcend IP/IPX-based network - 3Com 3C16710 | User Guide - Page 89
The community string allows a very simple method of authentication between the hub and the remote network management station. You can enter any text management station receiving too many traps at once, you can configure the hub to transmit traps with a delay between each trap. If several traps are - 3Com 3C16710 | User Guide - Page 90
5-6. If you are unsure of the correct settings to use, refer to the manual for your terminal or modem. If you change the settings by accident, return Connection Terminal / Modem Select Modem if you want to manage the hub through a modem. Otherwise, leave as Terminal. The cable you require for - 3Com 3C16710 | User Guide - Page 91
Login Over Modem Link Configured and Hub Logout Over Modem Link Configured are fields reserved for use by suppliers setting up the special modem dial-out feature, see "Remote Management Service" on page 3-7. Configuring Local Security The Local Security screen, as shown in Figure 5-8, is used for - 3Com 3C16710 | User Guide - Page 92
management facilities through the console port, disable access to the facility for each access level. To allow you to configure the hub locally in the event of problems on your network, we suggest that you change the default password for the permanently-enabled security access level, see "Editing - 3Com 3C16710 | User Guide - Page 93
16710.bk : MANVT100.FRM Page 17 Tuesday, October 7, 1997 11:38 AM Configuring Users Creating Users The Create User screen, as shown in Figure 5-9, is used to add new users. This option is available only for users with security access level. There can be up to 10 users, including the three default - 3Com 3C16710 | User Guide - Page 94
made to change the password again, the message 'Old Password Field Not Completed' is displayed. If you forget your password, refer to the advice in "Problems When Using Quick Config Manager" on page 6-3. - 3Com 3C16710 | User Guide - Page 95
, as shown in Figure 5-11, is used to remove users from the User List. The User List shows all of the users configured for the hub. This option is available only for users with security access level. Polling a Remote Device 5-19 Polling a Remote Device The Remote Poll screen, as shown in - 3Com 3C16710 | User Guide - Page 96
5-20 CHAPTER 5: ADDITIONAL MANAGEMENT USING VT100 The OfficeConnect Hub 8/TPM must have an IP or IPX address configured is the number of router hops and, if set, the time-to-live for the frame. The hub can be configured to information about the hub. Make a note of this information as your supplier may - 3Com 3C16710 | User Guide - Page 97
to the hub. This option is available only for users with security access level. Figure 5-14 Software Upgrade Screen When 3Com issues a new version of the hub SmartAgent® software, you can obtain the software image from 3Com bulletin board services, see "3Com provides easy access to technical support - 3Com 3C16710 | User Guide - Page 98
. This appendix describes these services." on page C-1. The software download can be performed through a serial connection (over SLIP) but it is much faster over the network. File Name Enter the name of the file that contains the software image to be downloaded to the hub. You must place the image - 3Com 3C16710 | User Guide - Page 99
16710.bk : PROBSOLV.FRM Page 1 Tuesday, October 7, 1997 11:38 AM 6 PROBLEM SOLVING The OfficeConnect® Hub 8/TPM has been designed to aid you when detecting and solving possible problems with your network. These problems are rarely serious, the cause is usually a disconnected or damaged cable, or - 3Com 3C16710 | User Guide - Page 100
OfficeConnect hub. Port Status LED not lit for a 10BASE-T port that has a connection. There is a problem OfficeConnect hubs not working. Check your hub connections; follow the information given in "Connecting OfficeConnect Hubs Together" on page 2-8. With 10BASE-T it is likely an MDI/MDIX switch - 3Com 3C16710 | User Guide - Page 101
the Console Port" on page 5-13. You forget your community string. Log in to the hub using VT100, and use the Edit User screen to view your community string, see "Editing Users" on page 5-18. Problems When Using VT100 The initial VT100 Main Banner screen does not display. Check that your terminal - 3Com 3C16710 | User Guide - Page 102
station cannot access the device. Check the hub's IP address, subnet mask and default router are correctly configured, see "Giving the Hub an IP Address" on page 4-7, security access level can log in and initialize the device. Problems When Using an IP/IPX-based Management Application The IP/IPX - 3Com 3C16710 | User Guide - Page 103
that the port through which you are trying to access the hub has not been disabled. If it is enabled, check the connections and network cabling at the port. Try accessing the hub through a different port. If you can now access the hub, a problem with the original port is indicated. Re-examine the - 3Com 3C16710 | User Guide - Page 104
16710.bk : PROBSOLV.FRM Page 6 Tuesday, October 7, 1997 11:38 AM 6-6 CHAPTER 6: PROBLEM SOLVING - 3Com 3C16710 | User Guide - Page 105
Environment Figure A-1 Dimensions And Operating Environment For The Hub BABT Approval (for U.K. Users Only) The OfficeConnect® Hub 8/TPM is covered by Oftel General Approval, NS/G/12345/J/100003 (IEC 68) *Refer to "EMC Statements" at the back of this user guide for conditions of operation. - 3Com 3C16710 | User Guide - Page 106
16710.bk : DIMSNSTA.FRM Page 2 Tuesday, October 7, 1997 11:38 AM A-2 APPENDIX A: DIMENSIONS, STANDARDS AND CABLING Cabling 10BASE-T Figure A-2 Pin Numbering For 10BASE-T Straight-through Crossover Figure A-3 Straight-through 10BASE-T Cabling Figure A-4 Crossover 10BASE-T Cabling - 3Com 3C16710 | User Guide - Page 107
16710.bk : DIMSNSTA.FRM Page 3 Tuesday, October 7, 1997 11:38 AM Console Port Figure A-5 Pin Numbering For Serial Connection Examples of Null Modem Cables You Can Use Cabling A-3 Figure A-6 Example Of Null Modem Cabling For 9 Pin Workstation Figure A-7 Example Of Null Modem Cabling For 25 Pin - 3Com 3C16710 | User Guide - Page 108
16710.bk : DIMSNSTA.FRM Page 4 Tuesday, October 7, 1997 11:38 AM A-4 APPENDIX A: DIMENSIONS, STANDARDS AND CABLING Modem Cable Management Settings You need to set your management equipment to: s Character size - 8 s Stop bit - 1 s Parity - None Figure A-8 Modem Cabling For 25 Pin Modem - 3Com 3C16710 | User Guide - Page 109
16710.bk : IPADDRES.FRM Page 1 Tuesday, October 7, 1997 11:38 AM B IP AND IPX ADDRESSES IP Addresses A world-wide network such as the Internet needs a globally-accepted method of identifying individual devices (workstations and network equipment). Devices on the Internet are assigned unique - 3Com 3C16710 | User Guide - Page 110
network numbers. These details are correct at the time of printing, but may change. USA - InterNIC, Network Solutions Attention: InterNIC Registration Services 505 Huntmar Park Drive Herndon VA 22070 Telephone: 1-800-444-4345 (Toll Free) 1-619-455-4600 1-703-742-4777 You can also send e-mail - 3Com 3C16710 | User Guide - Page 111
16710.bk : IPADDRES.FRM Page 3 Tuesday, October 7, 1997 11:38 AM Asia Pacific Network Information Centre (APNIC-DOM) Attention: Asia Pacific Network Information Centre (APNIC-DOM) c/o Computer Centre University of Tokyo 2-11-16 Yayoi Bunkyo-ku, Tokyo 113 Japan Admin. Contact: Telephone: e-mail: - 3Com 3C16710 | User Guide - Page 112
addresses are in the range 224.000.000.000 to 239.255.255.255. Subnets You can further divide your IP network into sub networks. Support for sub networks is important because the number of bits assigned to the device portion of an IP address limits the number of devices that - 3Com 3C16710 | User Guide - Page 113
Address CAUTION: To ensure that Quick Config Manager can always communicate with the hub, the IP subnet 192.168.101.x is permanently assigned to the SLIP port devices) that you do not plan to connect to the Internet then here is a guide as to what you can use for the IP addresses and subnet mask: s - 3Com 3C16710 | User Guide - Page 114
IP AND IPX ADDRESSES IPX Addresses If you are using the IPX protocol, the OfficeConnect® Hub 8/TPM is allocated an IPX address automatically by the local IPX router or NetWare File Server. This happens approximately 60 seconds after the hub is powered up for the first time. You should never need to - 3Com 3C16710 | User Guide - Page 115
is correct at time of publication. For the very latest, we recommend that you access 3Com Corporation's World Wide Web site as described below. Online Technical Services 3Com offers worldwide product support 24 hours a day, 7 days a week, through the following online systems: s World Wide Web site - 3Com 3C16710 | User Guide - Page 116
Tuesday, October 7, 1997 11:38 AM C-2 APPENDIX C: TECHNICAL SUPPORT Country Australia Brazil France Germany Hong Kong Italy (fee required) Service 3Com Corporation's interactive fax service, 3ComFacts, provides data sheets, technical articles, diagrams, and troubleshooting instructions on 3Com - 3Com 3C16710 | User Guide - Page 117
445 020 792954 0800 626403 Online Technical Services C-3 3ComForum on CompuServe Online Service 3ComForum is a CompuServe-based service containing patches, software, drivers, and technical articles about all 3Com products, as well as a messaging section for peer support. To use 3ComForum, you need - 3Com 3C16710 | User Guide - Page 118
to contact 3Com. Support from 3Com If you are unable to receive support from your network supplier, technical support contracts are available from 3Com. Contact your local 3Com sales office to find your authorized service provider using one of these numbers: Regional Sales Office 3Com Corporation - 3Com 3C16710 | User Guide - Page 119
7077 Support from 3Com C-5 Regional Sales Office 3Com Latin America U.S. Headquarters Northern Latin America Argentina Brazil Chile Colombia Mexico Peru Venezuela 3Com Mediterraneo Italy Spain 3Com Middle East 3Com Nordic AB Denmark Finland Norway Sweden 3Com Russia 3Com Southern Africa 3Com UK - 3Com 3C16710 | User Guide - Page 120
6 Tuesday, October 7, 1997 11:38 AM C-6 APPENDIX C: TECHNICAL SUPPORT Returning Products for Repair Before you send a product directly to 3Com for repair, you must first obtain a Return Materials Authorization (RMA) number. Products sent to 3Com without RMA numbers will be returned to the sender - 3Com 3C16710 | User Guide - Page 121
October 7, 1997 11:38 AM I N D E X Numerics 10BASE-2 1-2, 2-5 connecting hubs 2-9 segment 1-3 10BASE-T 1-2, 2-4, 2-5, A-2 connecting hubs 2-10 3Com Bulletin Board Service (3ComBBS) C-1 3Com sales offices C-4 3Com URL C-1 3ComFacts C-2 3ComForum C-3 A about network management 3-1 access levels 5-17 - 3Com 3C16710 | User Guide - Page 122
hubs together 2-8 using 10BASE-2 (Coax) 2-9 using 10BASE-T 2-10 connections checking 2-11 hub protocol 5-12 default COM port 4-3 passwords 5-8 router 5-10 users 5-8 values, note 4-1, 5-1 your network C-1 F fax service. See 3ComFacts FCS errors 4-24 representation of the hub 4-7, 4-12 H hardware revision 5- - 3Com 3C16710 | User Guide - Page 123
4-25 positioning 2-5 problems 6-2 resetting 4-11 security 4-28 siting 2-5 statistics 4-19 wall mounting 2-7 hub level security 4-31 HyperTerminal with VT100 terminal emulator 3-5, 3-6 your hub 3-2 map Quick Config Manager windows 4-3 VT100 screens 5-4 MDI/MDIX switch 2-10, 4-34 media type 4-27 MIB - 3Com 3C16710 | User Guide - Page 124
supplier support C-4 Network Traffic graph 4-22 node (IPX) 5-11 NTK 4-28 null modem cable A-3 O OfficeConnect hub 1-1 online technical services C-1 operating equipment 2-5 power A-1 problem solving 6-1 problems using Quick Config Manager 6-3 using VT100 6-3 using your hub 6-2 product range C-1 - 3Com 3C16710 | User Guide - Page 125
38 AM remote management service 3-7 Remote Poll screen 5-19 remote telnet access 5-16 reseller support tool 3-7 resetting the hub 4-11 resilience 4-33 support tool 3-7 support contract 4-9 system up time 5-21 T target address 5-20 technical support 3Com URL C-1 bulletin board service C-1 fax service - 3Com 3C16710 | User Guide - Page 126
5-13 throttle 5-13 trouble shooting 6-1 twisted pair 1-2 U unicast frames 4-22 upgrading software 5-21 URL C-1 user guide conventions 2 user interface, 4-21 Traffic 4-22 Zoom In 4-12 VT100 1-4, 3-1 keys 5-3 problems 6-3 starting 5-6 VT100 screen areas 5-1 components 5-2 map 5-4 VT100 terminal - 3Com 3C16710 | User Guide - Page 127
for software products may be obtained by telephoning 3Com's Corporate Service Center or an Authorized 3Com Service Center, within the warranty period. Products returned to 3Com's Corporate Service Center must be pre-authorized by 3Com with a Return Material Authorization (RMA) number marked on - 3Com 3C16710 | User Guide - Page 128
be limited in their application to you. This warranty gives you specific legal rights which may vary depending on local law. GOVERNING LAW: This Limited Warranty shall be governed by the laws of the state of California. 3Com Corporation 5400 Bayfront Plaza Santa Clara, CA 95052-8145 (408) 764-5000 - 3Com 3C16710 | User Guide - Page 129
if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, Commission helpful: ' How to Identify and Resolve Radio-TV Interference Problems' This booklet is available from the U.S. Government Printing Office, Washington - 3Com 3C16710 | User Guide - Page 130
16710.bk : EMCSTATE.FRM Page 128 Tuesday, October 7, 1997 11:38 AM
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Part No.
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October 1997
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