User Guide
Page 4
...49 Sample VLAN Configurations 49 Spanning Tree 51 IGMP Snooping & Query 54 Broadcast Storm 55 QoS VoIP Traffic Settings 56 PoE (3CBLSF26-PWR only) 59 Configuring Port Settings 60 Administration 60 Link Aggregation 63 Statistics 66 Security 66 RADIUS Client 66 802.1X Settings 67 ... LED Issues 76 If the Problem Persists 77 A OBTAINING SUPPORT FOR YOUR PRODUCT Register Your Product 79 Purchase Value-Added Services 79 Troubleshoot Online 79 Access Software Downloads 79 Telephone Technical Support and Repair 80 Contact Us 80 B TECHNICAL INFORMATION 3CBLSF26 Related Standards 83 Environmental ...
...49 Sample VLAN Configurations 49 Spanning Tree 51 IGMP Snooping & Query 54 Broadcast Storm 55 QoS VoIP Traffic Settings 56 PoE (3CBLSF26-PWR only) 59 Configuring Port Settings 60 Administration 60 Link Aggregation 63 Statistics 66 Security 66 RADIUS Client 66 802.1X Settings 67 ... LED Issues 76 If the Problem Persists 77 A OBTAINING SUPPORT FOR YOUR PRODUCT Register Your Product 79 Purchase Value-Added Services 79 Troubleshoot Online 79 Access Software Downloads 79 Telephone Technical Support and Repair 80 Contact Us 80 B TECHNICAL INFORMATION 3CBLSF26 Related Standards 83 Environmental ...
User Guide
Page 22
... into your Internet browser: http://www.3Com.com 3Com recommends using a conditioned launch cable. See "Troubleshooting" on the 3Com Web site, enter this transceiver to connect the Switch directly to a single mode fiber-optic cable or to multimode fiber using 3Com SFPs in the upright position). 22 INSTALLING THE SWITCH Using SFP Tranceivers The following sections describe...
... into your Internet browser: http://www.3Com.com 3Com recommends using a conditioned launch cable. See "Troubleshooting" on the 3Com Web site, enter this transceiver to connect the Switch directly to a single mode fiber-optic cable or to multimode fiber using 3Com SFPs in the upright position). 22 INSTALLING THE SWITCH Using SFP Tranceivers The following sections describe...
User Guide
Page 24
Cooling fan (3CBLSF26PWR only) Where possible, check that no cables are secure and that the cooling fan is fitted near to the front right hand side of the unit (when viewed from the front). If you experience any problems operating the Switch, refer to "Troubleshooting" on page 75. The fan is operating by listening to the unit. 24 INSTALLING THE SWITCH Table 9 Items to Check Cabling Check that all external cabling connections are pulled taut.
Cooling fan (3CBLSF26PWR only) Where possible, check that no cables are secure and that the cooling fan is fitted near to the front right hand side of the unit (when viewed from the front). If you experience any problems operating the Switch, refer to "Troubleshooting" on page 75. The fan is operating by listening to the unit. 24 INSTALLING THE SWITCH Table 9 Items to Check Cabling Check that all external cabling connections are pulled taut.
User Guide
Page 75
... has completed, the following message will need to factory defaults. You will be admin with suggested courses of the switch initialization to factory defaults erases all your TFTP server to the console interface, as instructed and wait for your local...3com.com before contacting your Switch, refer to take. Selecting Reboot will restart the Switch without making any changes Selecting Upgrade will now be displayed: Press Ctrl+C within 5 seconds to get into FailSafe mode Do as detailed elsewhere in this interface. CAUTION: Resetting the Switch to complete. 5 TROUBLESHOOTING...
... has completed, the following message will need to factory defaults. You will be admin with suggested courses of the switch initialization to factory defaults erases all your TFTP server to the console interface, as instructed and wait for your local...3com.com before contacting your Switch, refer to take. Selecting Reboot will restart the Switch without making any changes Selecting Upgrade will now be displayed: Press Ctrl+C within 5 seconds to get into FailSafe mode Do as detailed elsewhere in this interface. CAUTION: Resetting the Switch to complete. 5 TROUBLESHOOTING...
User Guide
Page 76
...TROUBLESHOOTING The Switch will perform automatic IP configuration after you logged in to the LEDs on and operating correctly. ■ The cable is connected at the far end is installed and correctly configured. Category 5 cable is installed and configured correctly. ■ The correct category of the switch....need to access the Web interface, you can be used for 1000BASE-T operation. Category 3 cables can use the 3Com Detect application (page 31) to locate the Switch on your network Solving LED Issues This section lists some issues that : ■ The device being connected to...
...TROUBLESHOOTING The Switch will perform automatic IP configuration after you logged in to the LEDs on and operating correctly. ■ The cable is connected at the far end is installed and correctly configured. Category 5 cable is installed and configured correctly. ■ The correct category of the switch....need to access the Web interface, you can be used for 1000BASE-T operation. Category 3 cables can use the 3Com Detect application (page 31) to locate the Switch on your network Solving LED Issues This section lists some issues that : ■ The device being connected to...
User Guide
Page 79
...it is important to register your product quickly to ensure you get full use of your networking projects. If you troubleshoot 3Com products. Expert assessment and implementation services are offered to fill resource gaps and ensure the success of the warranty and ... disruption to access. Value-added services like 3Com ExpressSM and GuardianSM can include 24x7 telephone technical support, software upgrades, onsite assistance or advance hardware replacement. Experienced engineers are enabled through product registration. Troubleshoot Online You will find support tools posted on...
...it is important to register your product quickly to ensure you get full use of your networking projects. If you troubleshoot 3Com products. Expert assessment and implementation services are offered to fill resource gaps and ensure the success of the warranty and ... disruption to access. Value-added services like 3Com ExpressSM and GuardianSM can include 24x7 telephone technical support, software upgrades, onsite assistance or advance hardware replacement. Experienced engineers are enabled through product registration. Troubleshoot Online You will find support tools posted on...
User Guide
Page 108
108 INDEX P password changing 40 default (blank) 40 setting 36 port settings configuring 56, 60, 66 positioning the Switch 18 POST 21 protocol defined 104 R repair authorization number by FAX, Asia and Pacific Rim 81 resetting to factory defaults 75 RJ-45 defined ...105 SFP transceivers approved (supported) 22 inserting 22 removing 23 spot checks 23 subnet mask 105 Switch positioning 18 switch defined 105 T TCP/IP 103 defined 105 technical specifications 83 traffic 105 monitoring 66, 70 troubleshooting 75 LED-related issues 76 POST failed 21 trunking See link aggregation U user name default 40...
108 INDEX P password changing 40 default (blank) 40 setting 36 port settings configuring 56, 60, 66 positioning the Switch 18 POST 21 protocol defined 104 R repair authorization number by FAX, Asia and Pacific Rim 81 resetting to factory defaults 75 RJ-45 defined ...105 SFP transceivers approved (supported) 22 inserting 22 removing 23 spot checks 23 subnet mask 105 Switch positioning 18 switch defined 105 T TCP/IP 103 defined 105 technical specifications 83 traffic 105 monitoring 66, 70 troubleshooting 75 LED-related issues 76 POST failed 21 trunking See link aggregation U user name default 40...