3Com manual Troubleshooting the NJ240FX

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Advanced Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Event Alerts

802.1X Settings

System Log Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Changing Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 General Configuration Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Identification Settings Hardware Settings

Priority & VLAN Configuration Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Port-Based Settings

Other VLAN Settings

Security Configuration Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Device Password

802.1X

SNMP Configuration Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 SNMP management

SNMP v3 User Profile

Advanced Configuration Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Event Alerts

Port-Based Configuration (Flow Control, AutoMDI(X), Data Rate Control)

Restoring to Base Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 System Log Settings Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Finding Computers Connected to IntelliJacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Upgrading the NJ240FX Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Viewing Log Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Viewing and Canceling Scheduled Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

TROUBLESHOOTING THE NJ240FX

Troubleshooting Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

TECHNICAL SUPPORT

Where To Go For Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Contact Us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

PRODUCT SPECIFICATIONS

WARRANTY AND REGULATORY INFORMATION

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Contents User Guide United States Government Legend Contents Troubleshooting the NJ240FX Installing the NJ240FX Intellijack Installing the NJ240FX Intellijack About the NJ240FX Before You Begin IntelliJack MountingCabling is connected to an active fiber port Installing the NJ240FX Intellijack Mounting the IntelliJack Installing the NJ240FX Intellijack LED Installing the NJ240FX Intellijack Installing Configuration Managers Configuration Managers Using Local Configuration Manager InitializingUsing the Local Configuration Manager Setting Advanced OptionsUsing the Local Configuration Manager IntelliJacks on Your DiscoveringNetwork Using the Central Configuration Manager Discovering IntelliJacks on Your Network Using the Central Configuration Manager Discovering IntelliJacks on Your Network Viewing Device PropertiesViewing Device Properties General Tab Port InformationProduct Information Hardware Settings Tab Viewing Device Properties Using the Central Configuration Manager Statistics & Log Tab Snmp Settings Tab Viewing Device Properties Advanced Settings Tab Alert Level Notifying Event System Log Settings Tab Configuration Changing DeviceIdentification Settings General ConfigurationHardware Settings Changing Device Configuration Priority & Vlan Configuration Port Based SettingsOther Priority & Vlan Settings Using the Central Configuration Manager Password Security Configuration802.1X Using the Central Configuration Manager Changing Device Configuration Snmp Configuration Changing Device Configuration Advanced Configuration Event Alert LevelsPort Based Controls Alert Level Notifying EventRestoring to Base Configurations Global Setting Default ValueGlobal Setting Default Value Using the Central Configuration Manager Changing Device Configuration Connected to NJ240FX Finding ComputersDevices Upgrading NJ240FX FirmwareUsing the Central Configuration Manager Upgrading the NJ240FX Firmware Using the Central Configuration Manager Upgrading the NJ240FX Firmware Using the Central Configuration Manager Troubleshooting the NJ240FX Troubleshooting the NJ240FX Obtaining Support Contact Us Asia, Pacific Rim Europe, Middle East, and AfricaLatin America North AmericaProduct Specifications Product Specifications Features Jabber Experienced 16 transmission attempts and was discarded. Product Specifications 3COM Corporation Limited Warranty