User Manual
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... Tree 45 802.1p Prioritization 46 Viewing Support Information 47 5 TROUBLESHOOTING Forgotten Password 49 Forgotten Static IP Address 49 Solving LED Issues 49 If the Problem Persists 52 A OBTAINING SUPPORT FOR YOUR PRODUCT Register Your Product 53 Purchase Value-Added Services 53 Troubleshoot Online 53 Access Software Downloads 53 Telephone Technical...
... Tree 45 802.1p Prioritization 46 Viewing Support Information 47 5 TROUBLESHOOTING Forgotten Password 49 Forgotten Static IP Address 49 Solving LED Issues 49 If the Problem Persists 52 A OBTAINING SUPPORT FOR YOUR PRODUCT Register Your Product 53 Purchase Value-Added Services 53 Troubleshoot Online 53 Access Software Downloads 53 Telephone Technical...
User Manual
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...problems. Documentation Comments Your suggestions are used to: ■ Emphasize a point. ■ Denote a new term at : pddtechpubs_comments@3com.com Please include the following information when commenting: ■ Document title ■ Document part number (on the title page) ■ Page number (if appropriate) Example: ■ 3Com Baseline Switch 2816-SFP/2824...-SFP Plus User Guide ■ Part Number DUA1648-5AAA03 ■ Page 24 Do not use this guide, each 3Com Baseline Switch 2816-SFP/2824-SFP Plus documentation set includes...
...problems. Documentation Comments Your suggestions are used to: ■ Emphasize a point. ■ Denote a new term at : pddtechpubs_comments@3com.com Please include the following information when commenting: ■ Document title ■ Document part number (on the title page) ■ Page number (if appropriate) Example: ■ 3Com Baseline Switch 2816-SFP/2824...-SFP Plus User Guide ■ Part Number DUA1648-5AAA03 ■ Page 24 Do not use this guide, each 3Com Baseline Switch 2816-SFP/2824-SFP Plus documentation set includes...
User Manual
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... loopback test failed. If these checks do not identify the cause of the Switch: Table 4 Power LEDs Status Meaning Green The unit is faulty. Switch is in half-duplex mode. 10 CHAPTER 1: INTRODUCING THE BASELINE SWITCH Table 1 10BASE-T/100BASE-TX Ports Flashing Port disabled or link loopback error.... Off No fiber SFP is inserted in full-duplex mode. (6) Power LED The Power LED shows the power status of the problem, it may be that the unit...
... loopback test failed. If these checks do not identify the cause of the Switch: Table 4 Power LEDs Status Meaning Green The unit is faulty. Switch is in half-duplex mode. 10 CHAPTER 1: INTRODUCING THE BASELINE SWITCH Table 1 10BASE-T/100BASE-TX Ports Flashing Port disabled or link loopback error.... Off No fiber SFP is inserted in full-duplex mode. (6) Power LED The Power LED shows the power status of the problem, it may be that the unit...
User Manual
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... the larger ones. Static discharge can be free-standing. CAUTION: If installing the Switch in a free-standing stack of different size Baseline or Superstack® 3 units, the smaller units must be rack-mounted in .)... be mounted in a 19-inch equipment rack using the mounting kit or it can cause reliability problems in your network. ■ Water or moisture cannot enter the case of the unit. ■...flow around the unit and through the vents in the side of the case is not restricted (3Com recommends that the unit is installed in contact with the signals on one is not available, try...
... the larger ones. Static discharge can be free-standing. CAUTION: If installing the Switch in a free-standing stack of different size Baseline or Superstack® 3 units, the smaller units must be rack-mounted in .)... be mounted in a 19-inch equipment rack using the mounting kit or it can cause reliability problems in your network. ■ Water or moisture cannot enter the case of the unit. ■...flow around the unit and through the vents in the side of the case is not restricted (3Com recommends that the unit is installed in contact with the signals on one is not available, try...
User Manual
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...it means that the power input to your network. Table 5Table 5 summarizes the possible colors for use . Refer to "(8) Power Supply" on the Switch: 1 Plug the power cord into a power outlet. If the Power LED turns yellow after POST. To power on page 11 for Correct Operation ...the network cables and the power cable are securely connected. The only way to the Switch Power problems can be grounded. Checking for more information. Before powering on the Switch, verify that you power on the Switch, it automatically performs a power-on , the Power LED lights up with the ...
...it means that the power input to your network. Table 5Table 5 summarizes the possible colors for use . Refer to "(8) Power Supply" on the Switch: 1 Plug the power cord into a power outlet. If the Power LED turns yellow after POST. To power on page 11 for Correct Operation ...the network cables and the power cable are securely connected. The only way to the Switch Power problems can be grounded. Checking for more information. Before powering on the Switch, verify that you power on the Switch, it automatically performs a power-on , the Power LED lights up with the ...
User Manual
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... is operating correctly. any problems can then be properly inserted only one way. Performing Spot Checks 19 7 Check the Module Active LEDs on users. 3Com recommends periodically checking the items listed in Table 6. The SFP transceiver should visually check the Switch. Performing Spot Checks At ...fitted with an appropriate Gigabit Ethernet connection. Attach a male duplex LC connector on the network cable into the duplex LC connector on host Switch LiFnlka/sAhc=tivAitcyt : 2 Gently slide the transceiver into the SFP slot until it is pointing toward you. 3 Pull the wire ...
... is operating correctly. any problems can then be properly inserted only one way. Performing Spot Checks 19 7 Check the Module Active LEDs on users. 3Com recommends periodically checking the items listed in Table 6. The SFP transceiver should visually check the Switch. Performing Spot Checks At ...fitted with an appropriate Gigabit Ethernet connection. Attach a male duplex LC connector on the network cable into the duplex LC connector on host Switch LiFnlka/sAhc=tivAitcyt : 2 Gently slide the transceiver into the SFP slot until it is pointing toward you. 3 Pull the wire ...
User Manual
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If you experience any problems operating the Switch, refer to the unit. 20 CHAPTER 2: INSTALLING THE SWITCH Table 6 Items to Check Item Verify That Cabling All external cabling connections are secure and that no cables are pulled taut Cooling Fan Where possible, check that the cooling fan is fitted on page 49. The fan is operating by listening to "Troubleshooting" on the right side of the unit (when viewed from the front).
If you experience any problems operating the Switch, refer to the unit. 20 CHAPTER 2: INSTALLING THE SWITCH Table 6 Items to Check Item Verify That Cabling All external cabling connections are secure and that no cables are pulled taut Cooling Fan Where possible, check that the cooling fan is fitted on page 49. The fan is operating by listening to "Troubleshooting" on the right side of the unit (when viewed from the front).
User Manual
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... lost. For information on how to interpret the output on a port: 1 In Port to run. 3 Click Apply. Restart Pressing the Restart the Switch button has the same effect as power cycling the unit. No configuration information will be of Diagnosis, select the cable test that you detect and...Switch can run four types of cable diagnostic tests: ■ Basic Diag ■ Pair Swap ■ Pair Polarity ■ Pair Skew To run any of these tests on the port analyzer, refer to which helps you want to Diagnose, select a port number. 2 In Type of use if you are experiencing problems...
... lost. For information on how to interpret the output on a port: 1 In Port to run. 3 Click Apply. Restart Pressing the Restart the Switch button has the same effect as power cycling the unit. No configuration information will be of Diagnosis, select the cable test that you detect and...Switch can run four types of cable diagnostic tests: ■ Basic Diag ■ Pair Swap ■ Pair Polarity ■ Pair Skew To run any of these tests on the port analyzer, refer to which helps you want to Diagnose, select a port number. 2 In Type of use if you are experiencing problems...
User Manual
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If you encounter an issue that is a problem with suggested courses of the Switch. For more information on how to obtain support for your local technical support representative. After resetting the Switch, log on to Appendix A. For information on using the Discovery application, refer to regain ... listed here and you cannot solve it , you set it , check the 3Com Knowledgebase at http://knowledgebase.3com.com before contacting your Switch, refer to the Web interface using , and managing the Switch, with this connection. Forgotten Password If you forget the password to the Web ...
If you encounter an issue that is a problem with suggested courses of the Switch. For more information on how to obtain support for your local technical support representative. After resetting the Switch, log on to Appendix A. For information on using the Discovery application, refer to regain ... listed here and you cannot solve it , you set it , check the 3Com Knowledgebase at http://knowledgebase.3com.com before contacting your Switch, refer to the Web interface using , and managing the Switch, with this connection. Forgotten Password If you forget the password to the Web ...
User Manual
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Refer to "Configuration" on a label supplied with the following information before returning the unit: ■ Product number and serial number (printed on page 43 for details. If the Problem Persists If the problem persists and the unit still does not operate successfully, contact your supplier with the unit). ■ A brief description of the fault. 52 CHAPTER 5: TROUBLESHOOTING 4 Click on the RESTART THE SWITCH button. 5 Restore the configuration file that you backed up in step 1.
Refer to "Configuration" on a label supplied with the following information before returning the unit: ■ Product number and serial number (printed on page 43 for details. If the Problem Persists If the problem persists and the unit still does not operate successfully, contact your supplier with the unit). ■ A brief description of the fault. 52 CHAPTER 5: TROUBLESHOOTING 4 Click on the RESTART THE SWITCH button. 5 Restore the configuration file that you backed up in step 1.
User Manual
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... 73/23/EEC and EMC Directive 89/336/EEC as amended by the Federal Communications Commission helpful: How to Identify and Resolve Radio-TV Interference Problems This booklet is likely to cause harmful interference to radio communications, in which case the user will be used in accordance with the instructions, may...
... 73/23/EEC and EMC Directive 89/336/EEC as amended by the Federal Communications Commission helpful: How to Identify and Resolve Radio-TV Interference Problems This booklet is likely to cause harmful interference to radio communications, in which case the user will be used in accordance with the instructions, may...