3Com 3C16710 - Manuals

2 A B O U T T H I S G U I D E Conventions The icon conventions that are used in this guide are: The text 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 ...

1-2 C H A P T E R 1: I N T R O D U C T I O N a stack (each hub is a single repeater) . The Office Connect Hub 8/TP M h as eight 10BASE-T por ts and a ninth 10BASE-2 (Coax) por t. This guide helps you get the most out of your hub . Networking Terminology A Network is a collection of workstations (for...

2 C R E A T I N G Y O U R N E T W O R K All of the products in the Office Connect® r ange are designed for ease of use. This chapter describes how to use your Office Connect Hub 8/TP M to create your network, and has information on: ■ The hub’s LEDs and ports ■ What you need to create your network ■...

2-4 C H A P T E R 2: C R E A T I N G Y O U R N E T W O R K Before You Start 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 3.5 ” Transcend® Quick C...

Posi t ion ing the Office Connect H ub 2-5 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 If you have additiona...

2-6 C H A P T E R 2: C R E A T I N G Y O U R N E T W O R K Using the Rubber Feet and Stacking Cl ips 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 ...

Wall Mounting the Office Connect H ub 2-7 Wall Mounting the Office Connect H ub 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 tha...

Conne cti ng Office Connect H ubs Together 2-9 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 hu...

2-10 C H A P T E R 2: C R E A T I N G Y O U R N E T W O R K 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 Star ting from the bottom, connect por t 8 of the lower hub to port 7 of the hub immedia...

S pot Checks 2-11 Checking Hub Connections When you have connected your hubs, power them on. The Port Status LEDs for the por ts 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 termin...

3 A B O U T N E T W O R K M A N A G E M E N T 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 Office...

Connecting to the Hub and Managing 3-3 ■ 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. ■ Configure the hub to send...

3-4 C H A P T E R 3: A B O U T N E T W O R K M A N A G E M E N T Figure 3-1 Different Management C on nections To The Hub Managing Through the Console Port This section describes how to connect and set up equipment to communicate with the hub through the console por t (called out-of-band management)...

Connecting to the Hub and Managing 3-5 Using Quick Config Manager C onnect 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 in...

3-6 C H A P T E R 3: A B O U T N E T W O R K M A N A G E M E N T 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). Before you can manage your hub over the network u sing IP , you must connec...

Remote Management Service 3-7 Refer to Chapter 5 for information on performing additional management using the VT100 management inter face. Remote Management Service Th e OfficeConnect hub has a special modem dial-out feature which can be set up by your supplier to inform them when your hub or netwo...

4 M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R This chapter describes how to install and use Quick Config Manager. For an over view of what you can do when managing the hub, see Chapter 3 . The sections in this chapter are in the order you would normally p erform them ...

4-2 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R 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 Con...

Configuring Multiple Hubs 4-3 If you are going to manage over a serial link from your management station, Quick Config Manager uses COM1 as the default serial por t. You can change this by editing the following line under the [slip] subsection of the QUICKMGR.INI file: SerialAttrib=COM1:9600,n,8,1 E...

4-6 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Accessing the Hub The OfficeConnect Hub 8/TP M uses community strings as a security measure, to check management access to the hub. T he community string you use must match one of the community strings c...

Giving the Hub an IP Address 4-7 You can also use the Community/Polling screen to: ■ Automatically di splay a graphical representation of the hub ever y time you star t Q uick Config Manager. ■ Define how regularly the graphical representation of the hub is updated. ■ Define how regularly any displa...

Giving the Hub an IP Address 4-9 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 . After resetting the hub, you may need to select Reset View ...

4-10 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R ■ Subnet Mask — Provides a box for you to type the subnet mask for the I P address. ■ Enable IP — If disabled, the IP fields for this dialog box are blanked and grayed-out. If enabled, the IP fields are...

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: ■ Apply any changes made to the hub’s IP configuration. ■ Re sets the hub’s statistics counters. CAUTION: Performing a reset may cause some of the data bei...

4-12 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Viewing the Hub Quick Config Manager can display a graphical representation of the hub you are managing, with: ■ The ports color coded to show their condition ■ The Aler t LED reflecting its physical st...

Displaying Information About the Hub 4-13 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 obta...

Setting Up the Alert LED 4-15 Setting Up the Alert LED The Alert LED can warn you of potential problems with your network. Quick Config Manager allows you to: ■ Test the Alert LED. ■ Configure the conditions that cause the Alert LED to light. ■ View what conditions have caused the Alert LED to light...

4-16 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Figure 4-6 Alerts Panel 3 Configure the conditions for the Aler t LED. 4 Click on OK when the Aler t LED setup is complete. If any Aler t conditions are active, the conditions are displayed in red. The ...

Setting Up the Alert LED 4-17 Coax Port Partition Enabled / Disabled Allows you to specify whether the Alert LED lights if the coaxial por t 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 l...

4-18 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R 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. The levels are: ■ High — 80% ne...

Monitoring 4-19 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 por t for which you want to ...

Monitoring 4-21 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 Error...

4-22 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R 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 tota...

Monitoring 4-23 Figure 4-9 Network Traffic Graph Network Errors Statistics Quick Config Manager allows you to display the numbers of frames with errors seen by a por t or the hub (all por ts) in any one time period. To display the Network Errors graph for a port: 1 Double-click on the por t for whic...

4-24 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Figure 4-10 Network Errors Graph 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...

Configuring a Port 4-25 Check the cable routing and reroute any cabling which may be affected by other noise sources. 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 ...

4-28 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R Hub Security The OfficeConnect Hub 8/TP M provides flexible communication between your workstations and other network equipment. It is a good idea to configure security for the hub to protect your netwo...

Hub Security 4-29 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 por t for which you want to configure security. Quick Config Manager displays the Port Configuration dialog box....

4-30 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R ■ 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 <Add . Use the format xx-xx-xx-xx-xx-xx ...

Hub Security 4-31 ■ Disable on Intrusion — Compares the source address of all frames received on the port to the authorized addresses for that por t. If the source address of the incoming frame does not match the authorized addresses for this port, the por t is disabled to prevent communication. Thi...

Resilience 4-33 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 ...

4-34 C H A P T E R 4: M A N A G I N G Y O U R H U B U S I N G Q U I C K C O N F I G M A N A G E R 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. How...

Using the Hub to Monitor Other Devices 4-37 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. If the main link fai...

Additional Management 4-39 When you have added a device to the WorkGroup Monitor table, its entry is color-coded: ■ Green — Device being polled and communicating. ■ Red — Device being polled but is not communicating. ■ Blue — Device not being polled by the hub. In the WorkGroup Monitor panel: Addres...

5 A D D I T I O N A L M A N A G E M E N T U S I N G VT100 This chapter describes the additional management tasks you can per form using VT100®. For an over view of the management you can perform and the different ways you can make a management connection to the hub, see Chapter 3 . Only the addition...

5-2 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Screen Components The main par t of a typical screen contains several different types of item. This table gives an example of each component, and explains its use: Componen t De scription ◆ Enabled ◆ Choice Field T ext encl...

VT100 User Interface 5-3 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: When you have fi...

5-4 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G 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, fo...

5-6 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G 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 consol...

Getting Started 5-7 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 on...

5-8 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 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. The user name to use depends on which access level you require: ...

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: ■ Set up logons for any other users and assign each user an appropriate securi...

5-10 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G 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...

Configuring and Viewing Setup Information 5-11 SLIP Address SLIP (Serial Line Internet Protocol) allows IP to run over the console por t 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 a...

5-12 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G 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 n...

Co nnecting a Modem to t he Console Port 5-13 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 manageme...

5-14 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 Figure 5-7 Console Port Setup Screen If you alter the console port settings and select OK , you terminate any existing session using the console port. To avoid terminating the session completely , ensure that the settings ...

Configuring Local Security 5-15 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 hu...

Configuring Users 5-17 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 ac...

5-18 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G 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...

Polling a Remote Device 5-19 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. Figure 5-11 Delete Users Screen ...

5-20 C H A P T E R 5: A D D I T I O N A L M A N A G E M E N T U S I N G VT100 The O ffice Connect Hub 8/TP M 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 a...

Downloading a Software Upgrade 5-21 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. Last Reset Type This field indicates the cause of the last r...

6 P R O B L E M S O L V I N G The Office Connect® Hub 8/T PM 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 solv...

6-2 C H A P T E R 6: P R O B L E M S O L V I N G 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 wit...

Problems When Using Quick Config Manager 6-3 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 conn...

6-4 C H A P T E R 6: P R O B L E M S O L V I N G 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 s...

A D I M E N S I O N S , S T A N D A R D S A N D C A B L I N G Dimensions and Operating 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, for indirect conn...

A-2 A P P E N D I X A: D I M E N S I O N S , S T A N D A R D S A N D C A B L I N G Cabling 10BASE-T Figure A-2 Pin Numbering For 10BASE-T Straight-through Figure A-3 Straight-through 10BASE-T Cabling Crossover Figure A-4 Crossover 10BASE-T Cabling 16710.bk : DIMSNSTA.FRM Page 2 Tuesday, October 7, 1...

Cabling A-3 Console Port Figure A-5 Pin Numbering For Serial Connection Examples of Null Modem Cables You Can Use Figure A-6 Example Of Null Modem Cabling For 9 Pin Workstation Figure A-7 Example Of Null Modem Cabling For 25 Pin Workstation 16710.bk : DIMSNSTA.FRM Page 3 Tuesday, October 7, 1997 11:...

A-4 A P P E N D I X A: D I M E N S I O N S , S T A N D A R D S A N D C A B L I N G Modem Cable Figure A-8 Modem Cabling For 25 Pin Modem Management Settings You need to set your management equipment to: ■ Character size — 8 ■ Stop bit — 1 ■ Parity — None 16710.bk : DIMSNSTA.FRM Page 4 Tuesday, Octob...

B IP A N D IPX A D D R E S S E S 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, us...

B-2 A P P E N D I X B: IP A N D IPX A D D R E S S E S 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. USA - InterNIC, Network Solutions Attention: InterNIC Registration Services 50...

IP Addresses B-3 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: Nakayama, Masaya (MN89) Telephone: +81 3 3812 2111 ext2720 e-mail: naka...

B-4 A P P E N D I X B: IP A N D IPX A D D R E S S E S 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...

IP Addresses B-5 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 par t of the device number, a...

B-6 A P P E N D I X B: IP A N D IPX A D D R E S S E S IPX Addresses If you are using the IPX protocol, the O fficeConnect® 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 fir...

C T E C H N I C A L S U P P O R T 3Com provides easy access to technical support information through a variety of services. This appendix describes these ser vices. Information contained in this appendix is correct at time of publication. For the very latest, we recommend that you access 3Com Corpor...

C-2 A P P E N D I X C: T E C H N I C A L S U P P O R T Access by Digital Modem ISDN users can dial in to 3ComBBS using a digital modem for fast access up to 56 Kbps. To access 3ComBBS using ISDN, use the following number: 408 654 2703 3ComFacts Automated Fax Service 3Com Corporation’s interactive fa...

Online Technical Services C-3 3ComForum on CompuServe Online Service 3ComForum is a CompuSer ve-based ser vice contain- ing patches, software, drivers, and technical articles about all 3Com products, as well as a messaging section for peer suppor t. To use 3ComForum, you need a CompuSer ve account. ...

C-4 A P P E N D I X C: T E C H N I C A L S U P P O R T Support from Your Network Supplier If additional assistance is required, contact your network supplier. Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installat...

Support from 3Com C-5 3Com Benelux B.V. Belgium Netherlands 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/S...

C-6 A P P E N D I X C: T E C H N I C A L S U P P O R T 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 s...

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 manager 5-16 monitor 5...

L I M I T E D L I F E T I M E W A R R A N T Y HARDWARE: 3Com warrants its hardware products to be free from defects in workmanship and materials, under normal use and service, for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller: Internetworking products O...

EMC S T A T E M E N T S 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. This eq...