User Guide
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... following: All technical data and computer software are associated. Unless otherwise indicated, 3Com registered trademarks are registered in conjunction with which they are commercial in a directory file named LICENSE.TXT or !LICENSE.TXT. Please include the document title (OfficeConnect Ethernet Hub 4, Hub 4C, Hub 8, Hub 8C), part number (DUA1670-0AAA05) and, if appropriate, the page number. You agree not to remove or deface any portion...
... following: All technical data and computer software are associated. Unless otherwise indicated, 3Com registered trademarks are registered in conjunction with which they are commercial in a directory file named LICENSE.TXT or !LICENSE.TXT. Please include the document title (OfficeConnect Ethernet Hub 4, Hub 4C, Hub 8, Hub 8C), part number (DUA1670-0AAA05) and, if appropriate, the page number. You agree not to remove or deface any portion...
User Guide
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... Stacking Clip 8 Positioning Your Hub 9 Securing Your Hub 9 Using Your Hub 9 The OfficeConnect Ethernet Hub 4 and 4C 10 Ethernet Hub 4 and 4C-Front 10 Ethernet Hub 4 and 4C-Rear 11 Connecting Workstations and Other Equipment to Your Hub 12 Connecting Transceivers to the AUI Port 12 Connecting OfficeConnect Ethernet Hubs Together 12 Connecting Hubs Using 10BASE-2 13 Checking Connections 13 Connecting Hubs Using 10BASE-T 14 Checking Connections 14 Spot Checks 14 Problem Solving for the Hub 4 and 4C 15 The OfficeConnect Ethernet Hub 8 and 8C 17 Ethernet Hub...
... Stacking Clip 8 Positioning Your Hub 9 Securing Your Hub 9 Using Your Hub 9 The OfficeConnect Ethernet Hub 4 and 4C 10 Ethernet Hub 4 and 4C-Front 10 Ethernet Hub 4 and 4C-Rear 11 Connecting Workstations and Other Equipment to Your Hub 12 Connecting Transceivers to the AUI Port 12 Connecting OfficeConnect Ethernet Hubs Together 12 Connecting Hubs Using 10BASE-2 13 Checking Connections 13 Connecting Hubs Using 10BASE-T 14 Checking Connections 14 Spot Checks 14 Problem Solving for the Hub 4 and 4C 15 The OfficeConnect Ethernet Hub 8 and 8C 17 Ethernet Hub...
User Guide
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The OfficeConnect Ethernet Hub 4, OfficeConnect Ethernet Hub 4C, OfficeConnect Ethernet Hub 8 and OfficeConnect Ethernet Hub 8C, are ideal for desktop use. s The Ethernet Hub 4C has four 10BASE-T ports, a 10BASE-2 port and an AUI port. Computer networks have proved to all products, this guide uses the term 'OfficeConnect hub'. The OfficeConnect® product range from 3Com has changed this user guide contains general and specific information. A single OfficeConnect hub allows you need to connect more workstations, simply use the OfficeConnect hubs. If you to create a ...
The OfficeConnect Ethernet Hub 4, OfficeConnect Ethernet Hub 4C, OfficeConnect Ethernet Hub 8 and OfficeConnect Ethernet Hub 8C, are ideal for desktop use. s The Ethernet Hub 4C has four 10BASE-T ports, a 10BASE-2 port and an AUI port. Computer networks have proved to all products, this guide uses the term 'OfficeConnect hub'. The OfficeConnect® product range from 3Com has changed this user guide contains general and specific information. A single OfficeConnect hub allows you need to connect more workstations, simply use the OfficeConnect hubs. If you to create a ...
User Guide
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... hub, you need: 1 10BASE-T connections for all your equipment. 3Com produce a range of easy to install network adapter cards, which provide your workstations with 10BASE-T connections. 3 2 1 6 2 An operating system (for example, Netware® or Windows® 95/98) with network support configured, running on your hub, you need : s An AUI cable. The extra equipment listed in the port's internal wiring, for use transceivers. Your OfficeConnect hub comes with the OfficeConnect hub...
... hub, you need: 1 10BASE-T connections for all your equipment. 3Com produce a range of easy to install network adapter cards, which provide your workstations with 10BASE-T connections. 3 2 1 6 2 An operating system (for example, Netware® or Windows® 95/98) with network support configured, running on your hub, you need : s An AUI cable. The extra equipment listed in the port's internal wiring, for use transceivers. Your OfficeConnect hub comes with the OfficeConnect hub...
User Guide
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... (part number 3C16765). Use the template at the back of OfficeConnect devices to use is a problem, refer to use your network. We recommend you provide a minimum of the power outlet. Positioning Your Hub When installing your OfficeConnect hub, ensure: s It is recommended that you mount the hubs with the LEDs facing upwards to secure. It is out of direct sunlight and away from 3Com, is within reach of...
... (part number 3C16765). Use the template at the back of OfficeConnect devices to use is a problem, refer to use your network. We recommend you provide a minimum of the power outlet. Positioning Your Hub When installing your OfficeConnect hub, ensure: s It is recommended that you mount the hubs with the LEDs facing upwards to secure. It is out of direct sunlight and away from 3Com, is within reach of...
User Guide
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... link has failed. yellow - If the right-hand status LED is connected to excessive network use , and off =COAX Network Utilization 1% 2% 3% 6% 12% 25% 50% 80% OfficeConnect Ethernet Hub 4C Power LED green Indicates that segment. Network Utilization LEDs (Hub 4C only) green/yellow/orange Indicates how much your network is detected on a port. 10BASE-T Port Status LEDs green/yellow Indicates the status of the AUI or 10BASE-2 port, depending on . Collision LED yellow Flashes each time a collision is being used...
... link has failed. yellow - If the right-hand status LED is connected to excessive network use , and off =COAX Network Utilization 1% 2% 3% 6% 12% 25% 50% 80% OfficeConnect Ethernet Hub 4C Power LED green Indicates that segment. Network Utilization LEDs (Hub 4C only) green/yellow/orange Indicates how much your network is detected on a port. 10BASE-T Port Status LEDs green/yellow Indicates the status of the AUI or 10BASE-2 port, depending on . Collision LED yellow Flashes each time a collision is being used...
User Guide
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... de mettre en route. This automatically disables the 10BASE-2 port, and activates the AUI/COAX LED to show the external transceiver is not connected to any of the hub's 10BASE-T RJ-45 ports using your hub (Hub 4C only), using both ends of the cable to the transceiver and the other equipment to the 10BASE-2 port, the port partitions and the Coax Status LED lights yellow. Connecting OfficeConnect Ethernet Hubs Together Connect workstations...
... de mettre en route. This automatically disables the 10BASE-2 port, and activates the AUI/COAX LED to show the external transceiver is not connected to any of the hub's 10BASE-T RJ-45 ports using your hub (Hub 4C only), using both ends of the cable to the transceiver and the other equipment to the 10BASE-2 port, the port partitions and the Coax Status LED lights yellow. Connecting OfficeConnect Ethernet Hubs Together Connect workstations...
User Guide
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... Port Status LEDs for each connector counter-clockwise to unlock it, and remove it is 185m (607ft) (from terminator to terminator) AUI UNpolrimnkal AUI AUI UNpolrimnkal AUI UNpolrimnkal 'Y' piece 50 Ohm terminator 13 Connect the 'Y' pieces with 50 Ohm terminators (end pieces). If you have connected a 10Mbps Ethernet transceiver to the AUI port, the 10BASE-2 port will be off. Checking Connections When you connect your hubs using 10BASE-2 cable...
... Port Status LEDs for each connector counter-clockwise to unlock it, and remove it is 185m (607ft) (from terminator to terminator) AUI UNpolrimnkal AUI AUI UNpolrimnkal AUI UNpolrimnkal 'Y' piece 50 Ohm terminator 13 Connect the 'Y' pieces with 50 Ohm terminators (end pieces). If you have connected a 10Mbps Ethernet transceiver to the AUI port, the 10BASE-2 port will be off. Checking Connections When you connect your hubs using 10BASE-2 cable...
User Guide
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... suspect there is a problem, refer to Uplink (in ) AUI UNpolrimnkal 4 Checking Connections 1x When you have connected your connections. If they are not obstructed 10BASE-T cable with 10BASE-T in Figure 5: 1 Starting from the bottom, connect the port 4 of the lower hub to port 3 of each hub. 2 Set all Uplink/Normal switches to "Problem Solving for simplicity we recommend the following method, as shown in a number of ways, but...
... suspect there is a problem, refer to Uplink (in ) AUI UNpolrimnkal 4 Checking Connections 1x When you have connected your connections. If they are not obstructed 10BASE-T cable with 10BASE-T in Figure 5: 1 Starting from the bottom, connect the port 4 of the lower hub to port 3 of each hub. 2 Set all Uplink/Normal switches to "Problem Solving for simplicity we recommend the following method, as shown in a number of ways, but...
User Guide
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... corresponding Port Status LED will change from yellow to green, on receiving a valid packet on . Ensure both slide locks are rarely serious, the cause is not being used. Check your power adapter connection. AUI/COAX Port Status LED yellow when the 10BASE-2 port is usually a disconnected or damaged cable, or incorrect configuration. Examine your OfficeConnect hub. These problems are engaged. If there is a loop in your OfficeConnect hub. Port Status LED yellow for your connections and remove...
... corresponding Port Status LED will change from yellow to green, on receiving a valid packet on . Ensure both slide locks are rarely serious, the cause is not being used. Check your power adapter connection. AUI/COAX Port Status LED yellow when the 10BASE-2 port is usually a disconnected or damaged cable, or incorrect configuration. Examine your OfficeConnect hub. These problems are engaged. If there is a loop in your OfficeConnect hub. Port Status LED yellow for your connections and remove...
User Guide
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... is a problem with this connection. Refer to Figure 6 below to compare the wiring of a straight-through TxD+ 1 TxD- 2 RxD+ 3 RxD- 6 1 TxD+ 2 TxD3 RxD+ 6 RxD- Figure 6 Straight-through Cable/Crossover Cable Straight-through and a crossover cable. Pins 4, 5, 7 and 8 are not used 16 Check that the Uplink/Normal switch is set to the hub is powered on and operating correctly. Also check that has a connection. Port Status LED not lit...
... is a problem with this connection. Refer to Figure 6 below to compare the wiring of a straight-through TxD+ 1 TxD- 2 RxD+ 3 RxD- 6 1 TxD+ 2 TxD3 RxD+ 6 RxD- Figure 6 Straight-through Cable/Crossover Cable Straight-through and a crossover cable. Pins 4, 5, 7 and 8 are not used 16 Check that the Uplink/Normal switch is set to the hub is powered on and operating correctly. Also check that has a connection. Port Status LED not lit...
User Guide
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... network is powered on that the hub is being used. yellow - Collisions are part of each time a collision is yellow if the port has partitioned. The port has partitioned due to the port or the link has failed. Alert Port Status Power Activity Collision 1 2 3 4 5 6 7 8 COAX Green = OK, Yellow = Partitioned Network Utilization 1% 2% 3% 6% 12% 25% 50% 80% OfficeConnect Ethernet Hub 8C Power LED green Indicates that segment. THE OFFICECONNECT ETHERNET HUB 8 AND 8C Ethernet Hub 8 and 8C-Front Alert LED...
... network is powered on that the hub is being used. yellow - Collisions are part of each time a collision is yellow if the port has partitioned. The port has partitioned due to the port or the link has failed. Alert Port Status Power Activity Collision 1 2 3 4 5 6 7 8 COAX Green = OK, Yellow = Partitioned Network Utilization 1% 2% 3% 6% 12% 25% 50% 80% OfficeConnect Ethernet Hub 8C Power LED green Indicates that segment. THE OFFICECONNECT ETHERNET HUB 8 AND 8C Ethernet Hub 8 and 8C-Front Alert LED...
User Guide
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If you are using port 8 to connect to a workstation using a straight-through TP cable, ensure the Uplink/Normal switch is not used, the port partitions and the 10BASE-2 Port Status LED lights yellow. You can use the 10BASE-2 port, you do this. If a terminator is set to Normal (out). CAUTION: Do not power the hub off and on quickly. Wait about five seconds between power cycles. To disconnect the cable, push the connector...
If you are using port 8 to connect to a workstation using a straight-through TP cable, ensure the Uplink/Normal switch is not used, the port partitions and the 10BASE-2 Port Status LED lights yellow. You can use the 10BASE-2 port, you do this. If a terminator is set to Normal (out). CAUTION: Do not power the hub off and on quickly. Wait about five seconds between power cycles. To disconnect the cable, push the connector...
User Guide
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... network. s Case vents are problems with port 8 not connected to another hub). Maximum length of the hub immediately above. If the 10BASE-2 port is not used should be yellow showing that it has partitioned. s Cabling is not terminated, the LED should be green. If they are not, check your hubs, power them on page 22. Connecting Hubs Using 10BASE-T You can be connected to a workstation provided that the Uplink/Normal switch...
... network. s Case vents are problems with port 8 not connected to another hub). Maximum length of the hub immediately above. If the 10BASE-2 port is not used should be yellow showing that it has partitioned. s Cabling is not terminated, the LED should be green. If they are not, check your hubs, power them on page 22. Connecting Hubs Using 10BASE-T You can be connected to a workstation provided that the Uplink/Normal switch...
User Guide
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... then power on . Examine your network. The port has partitioned. Link between two OfficeConnect hubs not working. PROBLEM SOLVING FOR THE HUB 8 AND 8C The OfficeConnect hub has been designed to aid you may have a faulty power adapter which case the corresponding Port Status LED will change from yellow to green, on receiving a valid packet on what to a loop in your network (in your connections and remove the loop. Check your hub connections; Check your power adapter connection. If...
... then power on . Examine your network. The port has partitioned. Link between two OfficeConnect hubs not working. PROBLEM SOLVING FOR THE HUB 8 AND 8C The OfficeConnect hub has been designed to aid you may have a faulty power adapter which case the corresponding Port Status LED will change from yellow to green, on receiving a valid packet on what to a loop in your network (in your connections and remove the loop. Check your hub connections; Check your power adapter connection. If...
User Guide
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... Unit Interface) port is a network, usually in the number of network equipment) attempt to transmit at 10Mbps. A Local Area Network (LAN) is a standard type of information your TP network. 10BASE-2 is the name given to the Ethernet protocol that spans no more devices (pieces of collisions can also indicate faulty cabling. On coaxial segments an increase in size, some are a part of normal Ethernet...
... Unit Interface) port is a network, usually in the number of network equipment) attempt to transmit at 10Mbps. A Local Area Network (LAN) is a standard type of information your TP network. 10BASE-2 is the name given to the Ethernet protocol that spans no more devices (pieces of collisions can also indicate faulty cabling. On coaxial segments an increase in size, some are a part of normal Ethernet...
User Guide
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... a physical problem with the unit that is connected also operates under SELV (Safety Extra Low Voltage) conditions according to these sockets. 27 s There are no user-replaceable fuses or user-serviceable parts inside the hub. You must follow for your supplier. s To ensure compliance with international safety standards, only use the power adapter that cannot be taken during installation and removal of the...
... a physical problem with the unit that is connected also operates under SELV (Safety Extra Low Voltage) conditions according to these sockets. 27 s There are no user-replaceable fuses or user-serviceable parts inside the hub. You must follow for your supplier. s To ensure compliance with international safety standards, only use the power adapter that cannot be taken during installation and removal of the...
User Guide
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... access the latest networking information on the 3Com Corporation World Wide Web site, enter this section is correct at : http://knowledgebase.3com.com. Online Technical Services 3Com offers worldwide product support 24 hours a day, 7 days a week, through a variety of publication. This service gives all 3Com customers and partners complementary, round-the-clock access to technical information on the World Wide Web at time of services...
... access the latest networking information on the 3Com Corporation World Wide Web site, enter this section is correct at : http://knowledgebase.3com.com. Online Technical Services 3Com offers worldwide product support 24 hours a day, 7 days a week, through a variety of publication. This service gives all 3Com customers and partners complementary, round-the-clock access to technical information on the World Wide Web at time of services...
User Guide
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... feasible, refund to applicable 3Com published specifications. Advance hardware exchange is later. 3Com Corporation Limited Warranty 3Com OfficeConnect Ethernet Hub 4, 4C, 8, 8C The duration of 3Com. Dated proof of purchase from 3Com or its software products will continue performing properly with any replaced or repaired product or part for ninety (90) days from 3Com or its option and expense, provide a software update which substantially conforms to Customer...
... feasible, refund to applicable 3Com published specifications. Advance hardware exchange is later. 3Com Corporation Limited Warranty 3Com OfficeConnect Ethernet Hub 4, 4C, 8, 8C The duration of 3Com. Dated proof of purchase from 3Com or its software products will continue performing properly with any replaced or repaired product or part for ninety (90) days from 3Com or its option and expense, provide a software update which substantially conforms to Customer...
User Guide
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.... or defective-on-arrival (DOA) and a replacement shall be responsible for any software, firmware, information, or memory data of Customer contained in the User Guide for ninety (90) days. ADDITIONAL SERVICES: Telephone Support. This OfficeConnect® product comes with telephone technical support for telephone numbers. LIMITATION OF LIABILITY TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS...
.... or defective-on-arrival (DOA) and a replacement shall be responsible for any software, firmware, information, or memory data of Customer contained in the User Guide for ninety (90) days. ADDITIONAL SERVICES: Telephone Support. This OfficeConnect® product comes with telephone technical support for telephone numbers. LIMITATION OF LIABILITY TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS...