6710.bk : FRONT.FRM Page 1 Tuesday, October 7, 1997 11:38 AM OFFICECONNECT® HUB 8/TPM 3C16710 USER GUIDE Part No.
16710.bk : FRONT.FRM Page 2 Tuesday, October 7, 1997 11:38 AM 3Com Corporation ■ 5400 Bayfront Plaza ■ Santa Clara, California ■ 95052-8145 © 3Com Technologies, 1997. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without permission from 3Com Technologies.
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16710.bk : IMSAFETY.FRM Page 7 Tuesday, October 7, 1997 11:38 AM IMPORTANT SAFETY INFORMATION WARNING: Warnings contain directions that you must follow for your personal safety. Follow all instructions carefully. ■ This unit operates under SELV conditions (Safety Extra Low Voltage) according to IEC 950, the conditions of which are maintained only if the equipment to which it is connected is also operational under SELV. ■ There are no user-replaceable fuses or user-serviceable parts inside the hub.
16710.bk : IMSAFETY.FRM Page 8 Tuesday, October 7, 1997 11:38 AM WICHTIGE SICHERHEITSHINWEISE ACHTUNG: Die Warnungen enthalten Anweisungen, die Sie zur eigenen Sicherheit zu befolgen haben. ■ Dieser Hub arbeitet mit SELV-Spannung (Safety Extra Low Voltage, Sicherheitskleinspannung) gemäß IEC950. Diese Bedingungen werden nur eingehalten, wenn die Geräte mit denen der Hub verbunden ist ebenfalls mit SELV-Spannung arbeiten.
16710.bk : IMSAFETY.FRM Page 9 Tuesday, October 7, 1997 11:38 AM L’INFORMATION DE SÉCURITÉ IMPORTANTE AVERTISSEMENT: Les avertissements contiennent les instructions que vous devez suivre pour votre sécurité personnelle. Suivre toutes les instructions avec soin. Veuillez lire à fond l’information suivante avant d’installer le moyeu: ■ Le soin exceptionnel doit être pris pendant l’installation et l’enlèvement du moyeu. ■ Seulement entasser le moyer avec les autres moyeux OfficeConnects.
16710.bk : IMSAFETY.FRM Page 10 Tuesday, October 7, 1997 11:38 AM YOUR HUB ADDRESSES Using Quick Config Manager, you can configure address information for your hub, which affects the way you can manage it. It is important that you note down this information as you may need to enter it when managing the hub again. Use this page to note down your settings. If you initialize the hub, the address settings are retained to allow you to continue managing the hub.
16710.bk : ABOUTGUI.FRM Page 1 Tuesday, October 7, 1997 11:38 AM ABOUT THIS GUIDE Introduction This guide describes how to set up and manage the OfficeConnect® Hub 8/TPM. The hub is ready for use in your network. It does not require management to get it working. Management simply allows you to perform additional network functions, for example monitoring your network and adding security. This guide is written for users who are new to networking.
16710.bk : ABOUTGUI.FRM Page 2 Tuesday, October 7, 1997 11:38 AM 2 ABOUT THIS GUIDE The text conventions that are used in this guide are: Conventions The icon conventions that are used in this guide are: Icon Type Description Information Note Information notes call attention to important features or instructions. Caution Cautions alert you to personal safety risk, system damage, or loss of data. Warning Warnings alert you to the risk of severe personal injury.
16710.bk : GETSTART.FRM Page 1 Tuesday, October 7, 1997 11:38 AM 1 INTRODUCTION Welcome to the world of networking with 3Com® . In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but until now only large businesses could afford the networking advantage. The OfficeConnect® product range from 3Com changed this, bringing networks to the small office.
16710.bk : GETSTART.FRM Page 2 Tuesday, October 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 example, IBM-compatible personal computers) and other equipment (for example, printers), connected for the purpose of exchanging information.
16710.bk : GETSTART.FRM Page 3 Tuesday, October 7, 1997 11:38 AM Networking Terminology A Segment is the length of Ethernet cable connected to a port, whether this cable is 10BASE-T, 10BASE-2 (Coax), or other type. When you daisy-chain equipment together with 10BASE-2 (Coax) cable, all of the cable forms a single segment. Packets are the units of information your workstations and other equipment send to each other over the network. A Frame is the data part of a packet.
710.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 composed of universities, government facilities, research institutions and private companies. IPX is a Novell Netware protocol that performs a similar function to IP.
16710.bk : CREYRNET.FRM Page 1 Tuesday, October 7, 1997 11:38 AM 2 CREATING YOUR NETWORK All of the products in the OfficeConnect® range are designed for ease of use.
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16710.bk : CREYRNET.FRM Page 4 Tuesday, October 7, 1997 11:38 AM 2-4 CHAPTER 2: CREATING YOUR NETWORK Workstation Connections Before You Start To connect workstations and other equipment to your hub, you need: Your OfficeConnect hub comes with: ■ One power adapter for use with the Office Connect hub ■ A Warranty Registration card for you to fill out and return ■ Four rubber feet ■ Four stacking clips ■ One 3.
16710.bk : CREYRNET.FRM Page 5 Tuesday, October 7, 1997 11:38 AM Positioning the OfficeConnect Hub In order to comply with the 10BASE-T standard, ports designed for workstation connections have been marked with the graphical symbol ‘x’. This denotes a crossover in the port’s internal wiring, for example 1x, 2x, 3x... Hub Connections Positioning the OfficeConnect Hub When installing your OfficeConnect hub, ensure: ■ It is out of direct sunlight and away from sources of heat.
16710.bk : CREYRNET.FRM Page 6 Tuesday, October 7, 1997 11:38 AM 2-6 CHAPTER 2: CREATING YOUR NETWORK Using the Rubber Feet and Stacking Clips The four self-adhesive rubber feet prevent your hub from sliding 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.
16710.bk : CREYRNET.FRM Page 7 Tuesday, October 7, 1997 11:38 AM Wall Mounting the OfficeConnect Hub 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. When wall mounting your hub, ensure that it is within reach of the power outlet. You need two suitable screws. Ensure that the wall you are going to use is smooth, flat, dry and sturdy.
16710.bk : CREYRNET.FRM Page 8 Tuesday, October 7, 1997 11:38 AM 2-8 CHAPTER 2: CREATING YOUR NETWORK The hub detects all port connections, so you can start using your network immediately. When you need more ports, simply add more OfficeConnect hubs. Connecting OfficeConnect Hubs Together You can increase the number of workstations that can connect to your network by adding more OfficeConnect hubs.
16710.bk : CREYRNET.FRM Page 9 Tuesday, October 7, 1997 11:38 AM Connecting OfficeConnect Hubs Together Connecting Hubs Using 10BASE-2 (Coax) When using 10BASE-2 (Coax) cable, it is important that both ends of the segment are properly terminated with 50 Ohm terminators (end pieces). Only use 50 Ohm 10BASE-2 (Coax) cables and use a ‘Y’ piece for each hub. You can use ‘T’ pieces but ‘Y’ pieces provide adequate clearance of the other ports. Connect a 10BASE-2 ‘Y’ piece to each of your hubs.
16710.bk : CREYRNET.FRM Page 10 Tuesday, October 7, 1997 11:38 AM 2-10 CHAPTER 2: CREATING YOUR NETWORK Connecting Hubs Using 10BASE-T You can connect hubs together with 10BASE-T in a number of ways, but for simplicity we recommend the following method: 1 Starting 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.
16710.bk : CREYRNET.FRM Page 11 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 you have used should be green for 10BASE-T, or off for 10BASE-2 (Coax). If they are not, check your connections. If the 10BASE-2 (Coax) port is not used and is not terminated, the LED should be yellow showing that it has partitioned. This is correct operation.
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16710.bk : ABOUTMAN.FRM Page 1 Tuesday, October 7, 1997 11:38 AM 3 ABOUT NETWORK MANAGEMENT Network management is not required to get your hub working, it simply allows you to change the way it works and to monitor what is happening to your network. Each OfficeConnect® Hub 8/TPM is a separate manageable entity, that means you manage each OfficeConnect Hub 8/TPM individually.
16710.bk : ABOUTMAN.FRM Page 2 Tuesday, October 7, 1997 11:38 AM 3-2 CHAPTER 3: ABOUT NETWORK M ANAGEMENT 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: ■ Configure IP information for the hub so that an IP-based network management station can communicate with it. ■ Restart the hub to refresh its statistics and use any new configurations.
16710.bk : ABOUTMAN.FRM Page 3 Tuesday, October 7, 1997 11:38 AM Connecting to the Hub and Managing ■ Configure security for the hub, including setting up new users and specifying what equipment is allowed to communicate through the hub. ■ Set up resilience; specify a backup connection that takes over should a main connection fail.
16710.bk : ABOUTMAN.FRM Page 4 Tuesday, October 7, 1997 11:38 AM 3-4 CHAPTER 3: ABOUT NETWORK M ANAGEMENT Managing Through the Console Port This section describes how to connect and set up equipment to communicate with the hub through the console port (called out-of-band management). By default, the hub automatically configures its baud rate. The maximum rate the autoconfiguration function detects is 19200 baud. You need to use a null modem cable for connection to the hub’s console port.
16710.bk : ABOUTMAN.FRM Page 5 Tuesday, October 7, 1997 11:38 AM Connecting to the Hub and Managing Using Quick Config Manager 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. Quick Config Manager uses SLIP to manage your hub. When you have made your connection and installed Quick Config Manager, you are ready to manage your hub. Refer to Chapter 4 for information on installing and using Quick Config Manager.
16710.bk : ABOUTMAN.FRM Page 6 Tuesday, October 7, 1997 11:38 AM 3-6 CHAPTER 3: ABOUT NETWORK M ANAGEMENT Managing Over the Network This section describes how to set up equipment to allow you to communicate with the hub over the network (called in-band management).
16710.bk : ABOUTMAN.FRM Page 7 Tuesday, October 7, 1997 11:38 AM Remote Management Service Refer to Chapter 5 for information on performing additional management using the VT100 management interface. Remote Management Service The OfficeConnect hub has a special modem dial-out feature which can be set up by your supplier to inform them when your hub or network is operating incorrectly.
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16710.bk : MANAGING.FRM Page 1 Tuesday, October 7, 1997 11:38 AM 4 MANAGING YOUR HUB USING QUICK CONFIG MANAGER This chapter describes how to install and use Quick Config Manager. For an overview of what you can do when managing the hub, see Chapter 3. The sections in this chapter are in the order you would normally perform them when managing the hub for the first time. If you are new to network management, read through this chapter to learn about the different management you can perform.
16710.bk : MANAGING.FRM Page 2 Tuesday, October 7, 1997 11:38 AM 4-2 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER Installation Procedure Quick Config Manager can be installed on its own or on to a workstation that already has other Transcend® management applications installed on it. CAUTION: Do not install Quick Config Manager in the same directory as any other Transcend management applications. The default directory into which Quick Config Manager is installed is C:\QUICKMGR.
16710.bk : MANAGING.FRM Page 3 Tuesday, October 7, 1997 11:38 AM Configuring Multiple Hubs If you are going to manage over a serial link from your management station, Quick Config Manager uses COM1 as the default serial port. You can change this by editing the following line under the [slip] subsection of the QUICKMGR.INI file: SerialAttrib=COM1:9600,n,8,1 Editing it to SerialAttrib=COM2:9600,n,8,1 changes the default serial port to COM2. 4-3 To do this: 1 Make your serial connection to the new hub.
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16710.bk : MANAGING.FRM Page 6 Tuesday, October 7, 1997 11:38 AM 4-6 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER 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 strings configured for the hub. Quick Config Manager remembers the last community string used.
16710.bk : MANAGING.FRM Page 7 Tuesday, October 7, 1997 11:38 AM Giving the Hub an IP Address 4-7 You can also use the Community/Polling screen to: ■ Automatically display a graphical representation of the hub every time you start Quick Config Manager. ■ Define how regularly the graphical representation of the hub is updated. ■ Define how regularly any displayed graphs are updated.
16710.bk : MANAGING.FRM Page 8 Tuesday, October 7, 1997 11:38 AM CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER 4-8 To display the IP Setup dialog box and view or configure the hub’s address settings: 1 From the Configure menu, select IP Setup...
16710.bk : MANAGING.FRM Page 9 Tuesday, October 7, 1997 11:38 AM Giving the Hub an IP Address 2 Enter the relevant information into the IP Setup diolog box or Easy Setup screens and click on OK to exit the screens. 3 Reset the hub for any changes to take effect, see “Resetting the Hub” on page 4-11. ■ 4-9 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’.
16710.bk : MANAGING.FRM Page 10 Tuesday, October 7, 1997 11:38 AM 4-10 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER ■ Subnet Mask — Provides a box for you to type the subnet mask for the IP address. ■ Enable IP — If disabled, the IP fields for this dialog box are blanked and grayed-out. If enabled, the IP fields are enabled, allowing you to enter your IP information. If you are not going to manage the hub over the network, disable IP.
16710.bk : MANAGING.FRM Page 11 Tuesday, October 7, 1997 11:38 AM Resetting the Hub Resetting the Hub Initializing the Hub Resetting the hub simulates switching the hub off and on. You may want to reset the hub if you want to: ■ Apply any changes made to the hub’s IP configuration. ■ Resets the hub’s statistics counters. Initializing the hub causes it to return to its factory default settings.
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16710.bk : MANAGING.FRM Page 13 Tuesday, October 7, 1997 11:38 AM Displaying Information About the Hub Displaying Information About the Hub Quick Config Manager enables you to display detailed information about the hub. This information is stored within the hub in a list, called a MIB (Management Information Base). The MIB defines what information can be obtained from the hub by an SNMP network management station.
16710.bk : MANAGING.FRM Page 14 Tuesday, October 7, 1997 11:38 AM 4-14 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER sysDescr Shows the system description supplied by the hub’s Management Agent software. sysLocation Provides a box for you to type the location of the hub. sysObjectId Shows the SNMP object identifier for the hub’s Management Agent software. sysServices Shows the services that the hub supports. sysUpTime Shows the time that has elapsed since the last reset.
16710.bk : MANAGING.FRM Page 15 Tuesday, October 7, 1997 11:38 AM Setting Up the Alert LED ■ Poll Failures — If your hub has been configured to monitor a device, it periodically polls it for information. If the device fails to respond, the failure is seen by the hub. ■ Network Errors — If the network has high volumes of communication, or there is a high amount of errors with the communication, it could be due to too many devices on your network or an incorrectly configure device.
16710.bk : MANAGING.FRM Page 16 Tuesday, October 7, 1997 11:38 AM 4-16 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER If any Alert conditions are active, the conditions are displayed in red. The other conditions are displayed in green. If the active conditions are enabled, the Alert LED will be lit. In the Alerts panel: Alert LED Test Enabled / Disabled Allows you to test the Alert LED.
16710.bk : MANAGING.FRM Page 17 Tuesday, October 7, 1997 11:38 AM Setting Up the Alert LED Coax Port Partition Enabled / Disabled Allows you to specify whether the Alert LED lights if the coaxial port becomes partitioned. If this condition is resolved after causing the Alert LED to light, the LED goes off (it stays lit if other conditions also caused it to light).
16710.bk : MANAGING.FRM Page 18 Tuesday, October 7, 1997 11:38 AM CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER 4-18 Network Utilization High / Med / Low / Disabled Allows you to specify whether the Alert LED lights if a certain level of network utilization is exceeded for five seconds.
16710.bk : MANAGING.FRM Page 19 Tuesday, October 7, 1997 11:38 AM Monitoring Monitoring Activity and Errors Statistics Quick Config Manager allows 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 for a port: 1 Double-click on the port for which you want to display the Activity/Errors graph. 2 In the Port dialog box, choose the Info category.
16710.bk : MANAGING.FRM Page 20 Tuesday, October 7, 1997 11:38 AM 4-20 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER Total Errors Shows the total number of errors that have occurred per poll, it should be a small percentage of the readable frames figure. Runts Shows the number of frames received with octet counts less than the minimum legal size (512 bits), which were not involved in a collision on the segment being monitored.
16710.bk : MANAGING.FRM Page 21 Tuesday, October 7, 1997 11:38 AM Monitoring Frame Types Statistics Quick Config Manager allows you to display the total network frame types seen by a port or the hub (all ports) in any one time period. Any frames producing errors are not included, these are shown in the Activity/Errors graph, see “Monitoring Activity and Errors Statistics” on page 4-19.
16710.bk : MANAGING.FRM Page 22 Tuesday, October 7, 1997 11:38 AM 4-22 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER Unicast Shows the percentage of readable frames received that are addressed to single devices. Multicast Shows the percentage of readable frames received that are addressed to multiple devices. The total number of multicast frames is normally a small percentage of the value seen for unicast (single address) frames.
16710.bk : MANAGING.FRM Page 23 Tuesday, October 7, 1997 11:38 AM 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 display the Network Errors graph. 2 In the Port dialog box, choose the Info category. 3 In the Repeater Port Info panel, select the Errors check box.
16710.bk : MANAGING.FRM Page 24 Tuesday, October 7, 1997 11:38 AM 4-24 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER FCS Errors Shows the number of frames received with checksum errors that do not have alignment errors. FCS errors are most likely caused by noise on the cable and should be a very small 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.
16710.bk : MANAGING.FRM Page 25 Tuesday, October 7, 1997 11:38 AM Configuring a Port Check the cable routing and reroute any cabling which may be affected by other noise sources. Configuring a Port Late Events Shows the number of frames for which a collision was detected after the valid packet minimum time. A late event can occur if you have a Local Area Network that is longer than Ethernet standards allow (for example, more than four repeaters in series or excessively long segments).
16710.bk : MANAGING.FRM Page 26 Tuesday, October 7, 1997 11:38 AM 4-26 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER You can configure a port so that it sends a trap to a network management application when the status of the link changes (for example, if a device is connected to or disconnected from the port), or when the port partitions.
16710.bk : MANAGING.FRM Page 27 Tuesday, October 7, 1997 11:38 AM Configuring a Port 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 is on and repeating traffic, or has been automatically isolated (partitioned).
16710.bk : MANAGING.FRM Page 28 Tuesday, October 7, 1997 11:38 AM 4-28 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER 3Com’s security is very advanced but easy to set up. It works by learning in a number of ways what devices are communicating through its ports. You can configure the hub to react in two ways: Hub Security The OfficeConnect Hub 8/TPM provides flexible communication between your workstations and other network equipment.
16710.bk : MANAGING.FRM Page 29 Tuesday, October 7, 1997 11:38 AM Hub Security 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 Configuration dialog box, select the Security category.
16710.bk : MANAGING.FRM Page 30 Tuesday, October 7, 1997 11:38 AM CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER 4-30 ■ ■ ■ MAC Address — Allows you to enter the MAC address for a device to be authorized to transmit through this port. When you have typed the MAC address, click on
16710.bk : MANAGING.FRM Page 31 Tuesday, October 7, 1997 11:38 AM Hub Security ■ Disable on Intrusion — Compares the source address of all frames received on the port to the authorized addresses for that port. If the source address of the incoming frame does not match the authorized addresses for this port, the port is disabled to prevent communication. This option is only valid when Full Security has been selected.
16710.bk : MANAGING.FRM Page 32 Tuesday, October 7, 1997 11:38 AM 4-32 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER In the Security Configuration panel at hub level: ■ ■ ■ ■ ■ ■ Figure 4-13 Security Configuration Panel Quick Config Manager displays the Security Configuration panel, as shown in Figure 4-13. 3 Configure the security features for each port. 4 Click on OK when the security setup is complete.
16710.bk : MANAGING.FRM Page 33 Tuesday, October 7, 1997 11:38 AM Resilience Resilience You can make your network more robust by adding resilience to it. When a link fails, as shown in Figure 4-14, all communication between equipment on each side of the link is lost. It would be very inconvenient for a manager to physically reinstate the network immediately and important communication might be lost.
16710.bk : MANAGING.FRM Page 34 Tuesday, October 7, 1997 11:38 AM 4-34 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER Resilient Links are available over twisted pair media (10BASE-T) because it carries a link test pulse which is used to decide whether the main link has failed and the standby link should take over. However, there is no such link signal over coaxial media (10BASE-2), so you cannot set up resilient links using the hub’s 10BASE-2 (Coax) port.
16710.bk : MANAGING.FRM Page 35 Tuesday, October 7, 1997 11:38 AM Resilience 1 2 CAUTION: Remember that you must always follow the hub connection requirements when linking hubs together, which involves the use of port 8 and the MDI/MDIX switch. 4 If port 8 is already in use, you may need to use special crossover cabling for any further links you wish to make. Crossover cables allow you to make a connection between two MDIX ports. Contact your supplier for information on doing this.
16710.bk : MANAGING.FRM Page 36 Tuesday, October 7, 1997 11:38 AM 4-36 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER In the Resilience Links panel: Main Port Shows the port number of the main link. Standby Port Shows the port number of the standby link. Link State Shows whether the resilient link pair is operational or not. When operational either the main port or the standby port can repeat traffic.
16710.bk : MANAGING.FRM Page 37 Tuesday, October 7, 1997 11:38 AM Using the Hub to Monitor Other Devices Delete Removes the resilient link pair from the table when an entry in the resilience table is selected. If you delete an entry in the resilience table, the current active link remains enabled and the current standby link is cancelled.
16710.bk : MANAGING.FRM Page 38 Tuesday, October 7, 1997 11:38 AM 4-38 CHAPTER 4: MANAGING YOUR HUB USING QUICK CONFIG M ANAGER 2 In the General Info dialog box, choose the WorkGroup category. 3 In the WorkGroup Monitor panel, click on Add. Quick Config Manager displays the Add Remote Poll dialog box, as shown in Figure 4-17. 4 In the Add/Edit Remote Poll 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.
16710.bk : MANAGING.FRM Page 39 Tuesday, October 7, 1997 11:38 AM Additional Management When you have added a device to the WorkGroup Monitor table, its entry is color-coded: ■ ■ ■ 4-39 Additional Management Green — Device being polled and communicating. If you want to perform any of the following additional management, use the VT100 screens, refer to Chapter 5: Red — Device being polled but is not communicating. ■ View the MAC address Blue — Device not being polled by the hub.
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16710.bk : MANVT100.FRM Page 1 Tuesday, October 7, 1997 11:38 AM 5 ADDITIONAL MANAGEMENT USING VT100 This chapter describes the additional management tasks you can perform using VT100®. For an overview of the management you can perform and the different ways you can make a management connection to the hub, see Chapter 3. Only the additional management screens are described in this chapter. For information on what the other screens do, refer to the corresponding Quick Config Manager screens in Chapter 4.
16710.bk : MANVT100.FRM Page 2 Tuesday, October 7, 1997 11:38 AM CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 5-2 Screen Components The main part of a typical screen contains several different types of item. This table gives an example of each component, and explains its use: Component Description ◆Enabled◆ Text enclosed in markers is a list, from which you can select one option only. Choice Field Component Description OK Text for a button is shown in upper-case letters.
16710.bk : MANVT100.FRM Page 3 Tuesday, October 7, 1997 11:38 AM VT100 User Interface Special Keystrokes As well as the keystrokes previously described, there are several other keystrokes for controlling the VT100 interface. These keystrokes allow you to move the cursor around the screen, enter information and move from one screen to another: [Tab] Moves the cursor from one field to the next. [Ctrl]+[B] Moves the cursor to the next button.
16710.bk : MANVT100.FRM Page 4 Tuesday, October 7, 1997 11:38 AM 5-4 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 Repeater, Unit and Port Screens There are three levels at which you can manage the hub using VT100: ■ Repeater — If you manage at Repeater level, you are managing or viewing the device as a whole. Any stackable products, for example 3Com’s SuperStack® range, can be logically stacked so that all the products form a single, logical repeater.
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16710.bk : MANVT100.FRM Page 6 Tuesday, October 7, 1997 11:38 AM 5-6 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 Getting Started This section explains logging on to the VT100 management facility, displaying the main menu and logging off. Main Banner If you are using a VT100 terminal connected (directly or through modems) to the console port, you need to perform the wake-up procedure. To do this, press [Return][Return] at the terminal.
16710.bk : MANVT100.FRM Page 7 Tuesday, October 7, 1997 11:38 AM Getting Started If you cannot see the main banner or it displays incorrectly, it may be that: ■ ■ Your terminal is not configured as a VT100 terminal. Check that 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 terminal uses correct parameters. The maximum speed is 19200 baud.
16710.bk : MANVT100.FRM Page 8 Tuesday, October 7, 1997 11:38 AM CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 5-8 If you are logging on for the first time (after installation or initialization), use one of the default user names and passwords shown in the following table.
16710.bk : MANVT100.FRM Page 9 Tuesday, October 7, 1997 11:38 AM Getting Started Main Menu The Main Menu, as shown in Figure 5-4, is used for accessing the various VT100 screens. 5-9 To carry out a particular management task, scroll to the relevant option and press [Return]. This chapter describes the screens which perform management tasks that Quick Config Manager does not. Logoff If you have finished using the facility, select the Logoff option from the bottom of the Main Menu.
16710.bk : MANVT100.FRM Page 10 Tuesday, October 7, 1997 11:38 AM 5-10 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 Configuring and Viewing Setup Information The Management Setup screen, as shown in Figure 5-5, is used to configure IP, IPX and SLIP parameters for the hub. This screen also provides access to other screens for you to set up traps and console port parameters. If you have no previous knowledge of IP, refer to Appendix B for more information. MAC Address The MAC address of the hub.
16710.bk : MANVT100.FRM Page 11 Tuesday, October 7, 1997 11:38 AM Configuring and Viewing Setup Information SLIP Address SLIP (Serial Line Internet Protocol) allows IP to run over the console port instead of the network. SLIP allows you to use out-of-band Telnet or SNMP management, either locally or remotely through a modem. SLIP operates with any valid IP address. The default is 192.168.101.1 which is the address Quick Config Manager uses. If you change this field, reset the hub to effect the change.
16710.bk : MANVT100.FRM Page 12 Tuesday, October 7, 1997 11:38 AM 5-12 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 Status Enabled / Disabled This field shows whether the data link protocol is enabled. Choose Disabled if you wish to prevent access for any reason, such as security considerations. Data Link Protocol This field shows the name of the IPX data link layer protocol. Setting Up Traps The Trap Setup screen, as shown in Figure 5-6, is used to set up traps.
16710.bk : MANVT100.FRM Page 13 Tuesday, October 7, 1997 11:38 AM Connecting a Modem to the Console Port IP or IPX Address Enter the IP or IPX address of the remote network management station to which SNMP traps should be sent. Community String The community string allows a very simple method of authentication between the hub and the remote network management station. You can enter any text string of up to 32 characters (case sensitive).
16710.bk : MANVT100.FRM Page 14 Tuesday, October 7, 1997 11:38 AM 5-14 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 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 them to their default settings (shown on these pages as the underlined values). Serial Connection Terminal / Modem Select Modem if you want to manage the hub through a modem. Otherwise, leave as Terminal.
16710.bk : MANVT100.FRM Page 15 Tuesday, October 7, 1997 11:38 AM Configuring Local Security Flow Control NONE / XON/XOFF / RTS - CTS Bidirectional / RTS - CTS Unidirectional Select the flow control option that corresponds with your terminal or modem. Speed Auto-Config / 1200 / 2400 / 4800 / 9600 / 19200 Select the baud rate for your terminal or modem. The hub can automatically configure the terminal speed to work with your VT100 terminal.
16710.bk : MANVT100.FRM Page 16 Tuesday, October 7, 1997 11:38 AM 5-16 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 The access levels are defined as: ■ Monitor — This allows the user to view the essential operations of the hub and to establish whether or not the hub is operating correctly. A user at this level cannot change the operating parameters of the hub. ■ Secure Monitor — In this implementation, Secure Monitor has the same rights as Monitor.
16710.bk : MANVT100.FRM Page 17 Tuesday, October 7, 1997 11:38 AM Configuring Users 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 users. Up to three users can concurrently access the management facility using Telnet. There is no limit to the number of SNMP remote management sessions.
16710.bk : MANVT100.FRM Page 18 Tuesday, October 7, 1997 11:38 AM 5-18 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 Editing Users The Edit User screen, as shown in Figure 5-10, is used to change your own password or community string. This option is available only for users with security access level. No user can directly change another user’s password or community string. If you are a system administrator and wish to change another user’s password, you need to log on as the other user.
16710.bk : MANVT100.FRM Page 19 Tuesday, October 7, 1997 11:38 AM Polling a Remote Device Deleting Users The Delete Users screen, 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.
16710.bk : MANVT100.FRM Page 20 Tuesday, October 7, 1997 11:38 AM 5-20 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 The OfficeConnect Hub 8/TPM must have an IP or IPX address configured for it, to enable it to receive responses from the device it is polling. Target Address Enter the IP or IPX address of the device to poll. If there are multiple instances of the Remote Poll screen, they share the same Target Address.
16710.bk : MANVT100.FRM Page 21 Tuesday, October 7, 1997 11:38 AM Downloading a Software Upgrade System Up Time This field indicates how long the hub has been running since the last reset. Number of Resets This field shows the total number of resets since the hub was first installed, or initialized. 5-21 Downloading a Software Upgrade The Software Upgrade screen, as shown in Figure 5-14, is used to download a new version of the software image to the hub.
16710.bk : MANVT100.FRM Page 22 Tuesday, October 7, 1997 11:38 AM 5-22 CHAPTER 5: ADDITIONAL M ANAGEMENT USING VT100 information through a variety of services. 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.
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 incorrect configuration. If this chapter does not solve your problem, contact your supplier for information on what to do next. Perform these actions first: ■ Ensure all equipment is powered on.
16710.bk : PROBSOLV.FRM Page 2 Tuesday, October 7, 1997 11:38 AM 6-2 CHAPTER 6: PROBLEM SOLVING Problems When Using Your Hub Power LED not lit. Check your power adapter connection. If there is still no power, you may have a faulty power adapter which needs replacing with another OfficeConnect power adapter. Do not use any other power adapter with the hub. Alert LED continuously lit. If you haven’t configured the Alert LED, it lights for two default conditions.
16710.bk : PROBSOLV.FRM Page 3 Tuesday, October 7, 1997 11:38 AM Problems When Using Quick Config Manager Problems When Using Quick Config Manager You cannot access the hub. For 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 autoconfiguration enabled), the serial connection type set to ‘Terminal’, and the flow control set to ‘NONE’. These are the default settings.
16710.bk : PROBSOLV.FRM Page 4 Tuesday, October 7, 1997 11:38 AM 6-4 CHAPTER 6: PROBLEM SOLVING Check the settings on your terminal or emulator. The parity must be set to ‘none’, the stop bit ‘1’ and the character size ‘8’. The management facility’s autoconfiguration works only with speeds from 1200 to 19200 baud. The Telnet management station cannot access the device.
16710.bk : PROBSOLV.FRM Page 5 Tuesday, October 7, 1997 11:38 AM Problems When Using an IP/IPX-based Management Application The IP/IPX-based management application can no longer access the device. Check that Community-SNMP access is enabled, see “Configuring Local Security” on page 5-15. Check 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.
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16710.bk : DIMSNSTA.FRM Page 1 Tuesday, October 7, 1997 11:38 AM A DIMENSIONS, STANDARDS AND CABLING Dimensions and Operating Environment Standards Functional: ISO 8802/3 IEEE 802.3 Safety: UL 1950, EN 60950 CSA 22.2 #950 EMC: 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, for indirect connection to a public telecommunications system.
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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 addresses. The Internet then behaves like a virtual network, using these assigned addresses when sending or receiving packets.
16710.bk : IPADDRES.FRM Page 2 Tuesday, October 7, 1997 11:38 AM B-2 APPENDIX B: IP AND IPX ADDRESSES Obtaining a Network Number There are three organizations responsible for allocating network numbers. These details are correct at the time of printing, but may change. You can also send e-mail to these addresses: ■ hostmaster@rs.internic.net (host, domain, network changes and updates) ■ action@rs.internic.net (computer operations) ■ mailserv@rs.internic.
16710.bk : IPADDRES.FRM Page 3 Tuesday, October 7, 1997 11:38 AM IP Addresses 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: Nakayama, Masaya (MN89) +81 3 3812 2111 ext2720 nakayama@nic.ad.
16710.bk : IPADDRES.FRM Page 4 Tuesday, October 7, 1997 11:38 AM B-4 APPENDIX B: IP AND IPX ADDRESSES Class A. The highest order bit is set to 0, giving a seven-bit network number and a 24-bit device address. You can have 125 networks with 16,777,214 devices per network, and the addresses are in the range 001.xxx.xxx.xxx to 126.xxx.xxx.xxx (where xxx represents the device portion). Subnets You can further divide your IP network into sub networks.
16710.bk : IPADDRES.FRM Page 5 Tuesday, October 7, 1997 11:38 AM IP Addresses The bits of the subnet mask are set to 1 if the device should treat the corresponding bit in the IP address as part of the original network number or as part of the subnet number. These bits in the mask are set to 0 if the device should treat the bit as part of the device number, as shown in Figure B-1.
16710.bk : IPADDRES.FRM Page 6 Tuesday, October 7, 1997 11:38 AM B-6 APPENDIX B: 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 change the allocated address.
16710.bk : PRODRANG.FRM Page 1 Tuesday, October 7, 1997 11:38 AM C TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix 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.
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16710.bk : PRODRANG.FRM Page 3 Tuesday, October 7, 1997 11:38 AM Online Technical Services C-3 3ComForum on CompuServe Online Service Country Telephone Number France 05 90 81 58 Germany 0130 81 80 63 Hong Kong 800 933 486 Italy 1678 99085 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 a CompuServe account.
16710.bk : PRODRANG.FRM Page 4 Tuesday, October 7, 1997 11:38 AM C-4 APPENDIX C: TECHNICAL SUPPOR T Contact your local 3Com sales office to find your authorized service provider using one of these numbers: Support from Your Network Supplier If additional assistance is required, contact your network supplier.
16710.bk : PRODRANG.FRM Page 5 Tuesday, October 7, 1997 11:38 AM Support from 3Com Regional Sales Office Telephone Number 3Com Benelux B.V.
16710.bk : PRODRANG.FRM Page 6 Tuesday, October 7, 1997 11:38 AM APPENDIX C: TECHNICAL SUPPOR T C-6 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 unopened, at the sender’s expense. To obtain an RMA number, call or fax: Country Telephone Number U.S.A.
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16710.bk : WARRANTY.FRM Page 126 Tuesday, October 7, 1997 11:38 AM WARRANTIES EXCLUSIVE: IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S OPTION.
16710.bk : EMCSTATE.FRM Page 127 Tuesday, October 7, 1997 11:38 AM EMC STATEMENTS VCCI STATEMENT: FCC STATEMENT: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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