3Com NJ240FX manual Using the Central Configuration Manager

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40CHAPTER 4: USING THE CENTRAL CONFIGURATION MANAGER

In a strict priority scheme (the setting’s other option), all highest priority traffic will be removed from the buffer. After it is removed, the next priority traffic type would be removed, and so on. This ensures that the most important or time critical data is passed first, but it could potentially slow traffic from other ports.

18You can change the Outgoing (to LAN) tag scheme for the IntelliJack. By default, frames are transmitted unmodified. This setting ensures that you will not risk losing communication with upstream switches due to misaligned VLAN IDs (VIDs).

If you want to configure traffic from a port on the IntelliJack, you can add a tag to the frame. This lets you separate traffic into different VLANs.

19You can also change the Incoming (from LAN) tag scheme. By default, all frames are received unmodified. By receiving frames unmodified, you will not risk losing communication between upstream switches and the devices connected to the IntelliJack due to misaligned VIDs.

If an upstream switch is sending a tagged packet but the device connected to one of the IntelliJack ports does not need the tag information, you can remove the tag.

20It is common practice to set the VLAN ID (VID) of the management port to VID 1, and this is the default value.

The management port is the port through which all commands to and from the IntelliJack are communicated. You may want to separate management traffic from other network traffic by assigning the Management Port of the IntelliJack to a different VID. You should make sure that the VID for the management port of the IntelliJack is the same as the VID for management ports of upstream devices.

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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 Cabling is connected to an active fiber port MountingIntelliJack 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 Network DiscoveringIntelliJacks on Your 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 DeviceHardware Settings General ConfigurationIdentification Settings Changing Device Configuration Priority & Vlan Configuration Port Based SettingsOther Priority & Vlan Settings Using the Central Configuration Manager 802.1X Security ConfigurationPassword 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 Devices Finding ComputersConnected to NJ240FX 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