Black Box LH8124A - Manual

Introduction 11 Redundant Link CapacityRedundant links can be configured enabling up to 24 pairs in a hub. Foreach pair of redundant links one port must be set as the primary andactive, the other as backup and isolated. If the primary port fails, it isisolated and the backup port is set to primary a...

12 10/100 Managed Hub Front Panel Overview: Clients An LED panel, 12 dual-speed, auto sensing ports, switch module installedLED, and 2 MDI-II shared ports are on the front panel of the unit.See below. An LED panel, 24 dual-speed, auto sensing ports, switch module installedLED, and 2 MDI-II shared po...

Introduction 13 LED IndicationThe hub’s LEDs indicate status information for the device, its ports forboth segments (10Mbps and 100Mbps), and switch status. LED Indicators 12 Port Power 100M Collision Forward Int. Switch Ext. Switch Link/RX 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23...

14 10/100 Managed Hub Forwarding LED* indicator meaning Forward Status Int Ext Meaning LED Switch Switch 100M On On Off A 10Mbps transmission being received by 100Mbps segment through the internal switch 100M On Off On A 10Mbps transmission being received by 100Mbps segment through the external swit...

16 10/100 Managed Hub Mini ConsoleThe Mini Console is a high definition display with console keys thatenables you to easily monitor and configure the system. The MiniConsole provides watch diagnostic functions, including port settings,status monitoring, traffic utilization, collision, and error rate...

Installation 17 Chapter 1 Installation Choosing a Location The 10/100 Managed Hub location should be less than 100 meters fromservers, workstations, or switches. The 10/100 Managed Hub can be deskmounted or rack mounted. CAUTION: Categor y 5 UTP/STP cables are environmentally sensitive. Make sure th...

18 10/100 Managed Hub Cascading hubs with cascade cables to make a stack is as simple asconnecting the Up port of one hub to the Down port of another hub asillustrated below. Cascade Ports NOTE: To connect the cascade cable, the Up port on one hub connects tothe Down port of another hub. Constructin...

Installation 19 • Console ManagementRefer to Chapter 4: Console Management • Web-Based ManagementRefer to the Network Management Guide • SNMP ManagementRefer to the Network Management Guide Client Hub RoleClient hubs supply the stack with additional ports (12/24) and an addi-tional expansion module ...

20 10/100 Managed Hub meters for 10Mbps connections. All ports are hot pluggable. It is recom-mended you label each cable to identify the device or port at each end. Connecting Devices Connecting WorkstationsInstall either a 10BASE-T or a 100BASE-TX Fast Ethernet NetworkInterface Card into each work...

Installation 21 Connecting Fast Ethernet Switching Hubs Connect 100Mbps devices using UTP/STP Cat 5 cables with RJ-45connectors, maximum length 5 meters, enabling sending/receiving toother fast Ethernet switching hubs. By default, each port is set to autosensing mode. The 10/100 Managed Hub can dete...

Using Expansion Modules 23 Chapter 2 Using Expansion Modules Expansion Module Overview Expansion modules provide additional functions such as internal bridgingof 10Mbps and 100Mbps segments and extended distances betweendevices. The available modules are: • Module LH8100C-2TX: 2 port Bridge or 10/10...

24 10/100 Managed Hub Backpressure (flow control)When packets are passed from 100Mbps segments to 10Mbps segmentsthe flow is restricted due to the lesser capacity of the 10Mbps segmentcausing backpressure and resulting in dropped packets. With flow controlor backpressure enabled, packets are made to...

Using Expansion Modules 25 2. Remove the power from the hub by disconnecting the power cable from the AC outlet. 3. Remove the installed bridge module or blank cover of the expansion module slot (not the NMU slot, only the bottomslot is available) by turning the two knobs on the frontcounterclockwis...

26 10/100 Managed Hub 10. For a hub stack with a master present, you must configure the software for the installed bridge module to enable theinternal bridge function because the software default settingis disabled. The default software setting will not allow theinternal bridge function to enable. T...

Using Expansion Modules 27 FX Module LED IndicatorsThe LEDs on each module indicate port activity. All LEDs are green. • Link: On, indicates a link is up. • TX: On, indicates a transmission in progress. • RX: On, indicates receiving data. • FDX: On, indicates the port is set to full duplex.Off, indi...

28 10/100 Managed Hub Module LH8100C-2TX Module LH8100C-2TX is either an internal bridge for bridging theinternal 10Mbps and 100Mbps segments or an external 10/100BASE-TXdistance extender with MDI-X and MDI-II interfaces using an RJ-45cable. Only one of these functions can be enabled at one time. Th...

Using Expansion Modules 29 Jumpers: Module LH8100C-2TX 1 JP18 2 3 1 JP16 2 3 JP15 JP14 JP13 JP12 JP11 JP10 JP9 JP8 JP7 JP6 JP5 JP4 JP3 JP2 JP1 JP18 Bac kpressure 2-3 EXT SW 1-2 INT SW JP1 I JP16 Disab le Enab le 1-2 2 -3

30 10/100 Managed Hub Module LH8100C-3TX Module LH8100C-3TX is a 3-port bridge module with a two port internalbridge for bridging 10Mbps and 100Mbps segments and an external10/100BASE-TX distance extender with MDI-X and MDI-II interfacesusing an RJ-45 cable. Both of these functions can be enabled at...

Using Expansion Modules 31 Jumpers: Module LH8100C-3TX 3 2 1 3 2 1 JP7 JP6 JP5 JP4 JP2 JP1 2-3 JP4 – JP6 Int Sw Enab le 1-2 Int Sw Disab le JP2 2-3 JP7 Bac kpressure 1-2 Bac kpressure dis JP1,

32 10/100 Managed Hub Module LH8100C-2FX Module LH8100C-2FX provides a two port internal bridge for bridging10Mbps and 100Mbps segments or 100BASE-FX distance extender withSC type connectors for fiber cable. The internal bridge must be enabledwith on board jumpers before installation. The external d...

Using Expansion Modules 33 Jumpers: Module LH8100C-2FX 3 JP19 2 1 3 JP1 2 1 3 JP17 2 1 JP16 JP15 JP14 JP13 JP12 JP11 JP10 JP9 JP8 JP7 JP6 JP5 JP4 JP3 JP2 JP1 JP19 Bac kpressure 2-3 EXT SW 1-2 INT SW JP2 I JP17 Disab le Enab le 1-2 2 -3 HDX FDX 1-2 2-3

34 10/100 Managed Hub Module LH8100C-3FX Module LH8100C-3FX provides a two port internal bridge for bridging10Mbps and 100Mbps segments and 100BASE-FX distance extender withSC type connectors and fiber cable. The internal bridge must be enabled ordisabled with on board jumpers before installation. T...

Using Expansion Modules 35 Jumpers: Module LH8100C-3FX 3 JP1 2 1 1 2 3 3 2 1 JP8 JP7 JP6 JP5 JP3 JP2 JP1 Bac kpressure Bac kpressure dis 2-3 Int Sw Enab le 1-2 Int Sw Disab le JP3 & JP5-7 JP2, JP8 2-3 1-2 HDX FDX 1-2 2-3

Managing Through the Mini Console 37 Chapter 3 Managing Through the Mini Console Mini Console Overview The Mini Console is a high definition display panel that provides brillianttext and graphics. It displays information about the system, port status orother information depending on the menu selecte...

38 10/100 Managed Hub VFD Display The Vacuum Florescent Display (VFD) shows the following port andsystem information: %: The relative percentage of utilization or collision. Port Number Indicators: Indicates the number of a port, and bybrightness, indicates status information. See the next table. Po...

Managing Through the Mini Console 39 Por t Indicator Definition The port number indicators define the port status and activity by the waythey are illuminated, such as ON, OFF, flashing and with a frame aroundthe numbers. The following table summarizes the definition of the port indicators. Port Indi...

40 10/100 Managed Hub The following summarizes the Console Key functions. Prev: Cycles back through the current menu level. Next: Cycles forward through the current menu level. Enter: Selects the displayed menu item or when pressed andheld changes a setting. Holding down the Enter key changes thedef...

Managing Through the Mini Console 41 PORT STATUS ALL PORTS 10M PORTS100M PORTSLINK UPLINK DOWNPOLAR NORMALPOLAR REVERSNO AUTO PARTSAUTO PARTENABLEDISABLE PORT 1~PORT N Press “ENTER” to showthe status applied to theport PORT CONFIG SYS LOCKED **** PSW ALL PORT ENABLED PORT 1~PORT N DISABLEDAUTO-NEGO1...

42 10/100 Managed Hub Observing Network TrafficYou can observe the network traffic in the Mini Console with the Utiliza-tion menu. Seven columns of gauge bars, which shift continuously fromleft to right as time elapses, represent the utilization rate of each segment.The gauge bar columns on the left...

Managing Through the Mini Console 43 Selecting a GroupYou can select a group to monitor and configure when there are managedhubs cascaded to the master hub. “Group” refers to a hub in the stack, therange is 1~6 when the maximum number of hubs exist in the stack. Youcan manage each hub using the Mini...

44 10/100 Managed Hub Monitoring Port StatisticsYou can monitor statistics of individual ports or all ports simultaneouslyusing the Statistics Menu. The table, “Port Statistics Counters” lists theavailable counters that can be monitored. Port Statistic Counters Counter Type Displayed READABLE FRAMES...

Managing Through the Mini Console 45 AUTO PART Total number of times the port was auto-partitioned. TOTAL ERRORS Total errors received by the port including FCS errors, Align errors, Frame Too Long, Short Events, Late Events, Very Long Events and Rate Mismatch. Selecting a Port to Monitor 1. Press &...

46 10/100 Managed Hub 3. Press <Next> to move the “port cursor” to the desired port, the port number displays in the Message Zone, as shownbelow. Scrolling to a Port 4. Press <Enter> to confirm the selection of the port; and go to the counter type selection menu. The name of the portstat...

Managing Through the Mini Console 47 Monitoring Port Detail InformationYou can monitor detailed port information for all ports at once or forindividual ports using the Port Status menu. Monitoring All Ports StatusTo view all port status: 1. Press <Next> until “PORT STATUS” displays in the Mess...

48 10/100 Managed Hub 3. Press Enter to view all the ports’ status at once. The figure below illustrates 10Mbps ports 1, 2, 3, 4, 7, 10, 13,14, 15, 16, 19 & 22. 10Mbps Ports 4. Press <Next> to view the status of other ports. 100Mbps ports status displays. In the figure below, ports 5, 6, 8...

Managing Through the Mini Console 49 POLAR REVERSE The receiver (Rx) polarity has been automatically crossed by the hub. NO AUTO PART Indicates all ports not auto partitioned. AUTO PART Indicates all Auto Partitioned ports. ENABLED Indicates all Enabled ports. DISABLED Indicates all Disabled ports. ...

50 10/100 Managed Hub Configuring PortsThe PORT CONFIG menu enables you to configure individual ports or allports at one time. You are prompted to enter the password when theconsole is locked. The ports must be configured to match the devices atthe other end of the link. Settings such as speed must ...

Managing Through the Mini Console 51 Auto Negotiate Ports 3. Press <Next> to scroll through each configuration item. 4. Press Enter to apply the configuration displayed in the Message Zone to all the ports. Configuring a single port 1. With “PORT CONFIG” displayed in the Message Zone, press &l...

52 10/100 Managed Hub 4. Press <Next> to scroll through each configuration item. 5. Press <Enter> to apply the currently displayed configuration to the port. The applied configuration is indicated by an asterisk sign displayed beforethe name of the configuration in the Message Zone as sh...

Managing Through the Mini Console 53 Configuring the Unit 1. Select UNIT CONFIGURATION from the Main Menu. Unit Config Main Menu 2. Press <Enter> to go to the UNIT CONFIGURATION menu. 3. Press <Next> to scroll through each configuration option. 4. Press <Enter> to go to the next le...

54 10/100 Managed Hub Unlocked State 1. Select UNIT CONFIGURATION from the Main Menu. 2. Press <Enter> to go to the UNIT CONFIGURATION menu. 3. Console Lock displays in the Message Zone. 4. Press <Next> to toggle to lock. 5. Press <Enter> to set the configuration, a lock sign appea...

Managing Through the Mini Console 55 3. You are prompted to enter the password. 4. Enter the password. The console is unlocked. Network ConfigurationThe Network Configuration menu allows setting the hub’s IP Address,Subnet Mask and Default Gateway. The hub’s Network Configurationsmust be set to comp...

56 10/100 Managed Hub IP Address 5. Press <Prev> to increase the digit (“0” ~ “9”). NOTE: Use “0” for a blank space, for example: entering“000” equals “0” or entering “022” equals “22”. 6. Press Enter to set the digit and move the cursor to the next digit. The current digit is blinking. 7. Rep...

Managing Through the Mini Console 57 Subnet MaskSelect the SUBNET MASK option and follow the same procedure forsetting an IP Address. Default GatewaySelect the DEFAULT GATEWAY option and follow the same procedurefor setting an IP Address. Out-of-Band ConfigurationYou can set the Out-of-Band configur...

Managing Through the Mini Console 59 Restar ting the Hub The hub will use your configurations to set up the system when it restarts.Restart the system with the Restart Menu using the following steps: 1. Scroll to UNIT CONFIG and press <Enter>. 2. Scroll to SYS RESTART and press <Enter>. ...

60 10/100 Managed Hub System Information Menu The System Information menu displays information about the deviceversion, the device software version, and the network configurationsettings (IP Address, Subnet Mask and Default Gateway). System InformationThe following system information is cycled throu...

Master Hub Configuration & Console Management 61 Chapter 4 Master Hub Configurationand Console Management This Chapter is only for Master Hub configuration and management. Wheninstalling the 10/100 Managed Hub the first time, it is necessary to config-ure the hub through the Console Interface. C...

62 10/100 Managed Hub 5. Press <ENTER> 2 or 3 times and the login panel to the management interface and login menu appears as shownbelow. See Menu Convention in the next section tounderstand the menu fields and commands of the consolemanagement interface. Menu Convention This section describes...

Master Hub Configuration & Console Management 63 You can move the cursor between items in menus using the Tab key orarrow keys. Console Management Menu conventions are listed below: Menu Title: The menu title briefly describes the purpose ofthe menu. Check Box: Use to set a configuration item th...

64 10/100 Managed Hub Using the Console Program Ensure that the VT-100 compatible terminal parameters are set. Start theVT-100 compatible terminal and connect power to the hub. If the hub isalready powered, press <Enter>, one or more times to bring up the loginmenu. The login menu appears simi...

Master Hub Configuration & Console Management 65 Main MenuThe management functions of 10/100 Managed Hub are available fromthe Main Menu. A management function is selected by pressing <Tab> orUp/Down Arrow keys to highlight the function of interest and pressingEnter. The Main Menu appears ...

Master Hub Configuration & Console Management 67 System Description: A textual description of the entity. Thisalso includes the name and version identification of thesystem’s hardware type, software operating system, andnetworking software. System Object ID: This ID is the vendor’s authoritative...

68 10/100 Managed Hub Setting up for Management The Management Setup Menu is used to configure 10/100 Managed Hubfor the available management functions. Management Setup Menu Network Configuration: Allows you to configure the IPAddress, Subnet Mask, Default Gateway, and SLIP Address. Serial Port Con...

Master Hub Configuration & Console Management 69 Network ConfigurationThere are several ways or Network Interfaces that you can use to config-ure the hub. You must set up the hub using Local Console management toenable the other management capabilities: • Mini Console (see Chapter 3) • Local Con...

70 10/100 Managed Hub Interface: The current interface number; 1=Ethernet, 2=SLIP Interface Type: The interface type — Ethernet or SLIP MAC Address: Displays the hub’s MAC Address, for example:00-E0-95-00-00-05. IP Address: The dotted decimal address assigned to the10/100 Managed Hub. Subnet Mask: T...

Master Hub Configuration & Console Management 71 Out-of-Band Serial Configuration Menu The baud rate, character size, parity, and stop bits are read only and notconfigurable. Baud Rate: The current serial port baud rate that can beconfigured from the Serial Port Configuration Menu. Character Siz...

Master Hub Configuration & Console Management 73 Out-of-Band Operation Mode Baud Rate: The baud rate can be configured as one from2400bps, 4800bps, 9600bps, 19200bps. The default is 9600. Character Size: 8 bits character size Parity: No parity. Stop Bits: 1 stop bit Select <Save> to retain...

74 10/100 Managed Hub SNMP Community SetupThe SNMP Community Setup Menu is used to set up SNMP communi-ties. Up to six Community Names, Access Rights, and Status can beconfigured. You can add, delete, or edit SNMP community names, set the accessrights and status. Community names are case sensitive, ...

Master Hub Configuration & Console Management 75 To add a community name: 1. Highlight an index number and press <Enter>. An editable panel is presented, “SNMP Community Menu -2”. 2. Enter a name in the Input field. 3. Set the access right and status. 4. Highlight ADD, and press <Enter&...

76 10/100 Managed Hub Trap Receiver SetupTraps are messages sent across the network to an SNMP NetworkManager. These messages alert the network manager for network manage-ment purposes. You can set up six trap receivers. You can configure the following: Community Name: The authorized SNMP community ...

Master Hub Configuration & Console Management 77 To set up a trap receiver community name: 1. Select a Trap Community Name and press <Enter> to openthe configuration menu for the selected index as shown below. Configuring a Community Name The Community Name can be edited, the IP Address ca...

Master Hub Configuration & Console Management 79 Out-of-Band Management ControlYou can enable or disable Out-of-Band management. • When connecting with local console, this setting takes effectimmediately. • When connecting with Telnet, the system must be restartedbefore the setting takes effect....

Master Hub Configuration & Console Management 81 Controlling Devices The Device Control Menu displays the configurable device sub menus. Device Control Menu Repeater Group Control/Status: Allows you to read andconfigure all the hubs in a stack. Repeater Port Control/Status: Allows you to read an...

82 10/100 Managed Hub Repeater Group Control/StatusThe Repeater Group Control/Status displays status information for groupsand allows enabling or disabling a group as well as naming and resettingthe group. Repeater Group Control/Status Group Number: The ID number of a hub in the stack;the range is 1...

Master Hub Configuration & Console Management 83 Group Last Changed: The value of system uptime since any ofthe following conditions occurred:• hub cold or warm-started • this instance of group was created (such as, when a deviceor module was added to the system) • a change in the value of hub o...

Master Hub Configuration & Console Management 85 Repeater Port Control/StatusThe Repeater Port Control/Status displays status information for eachport, of each linked repeater, and allows enabling/disabling, setting thespeed, and enabling/disabling link status change notification for ports. Repe...

Master Hub Configuration & Console Management 87 Link Test: Enable or disable link testing. Speed Control: The port speed. The port automatically connectsto the 10Mbps or 100Mbps segment based on its port speed.• Auto Negotiate: The speed is detected and the duplex modeis forced to half duplex. ...

Master Hub Configuration & Console Management 89 Bridge Module ControlThis control lists the configurable functions and provides option fields;use Ctrl + S to toggle between options. External Function Admin State: The default value is Disable.• Enable: Enables the external bridge function. • Dis...

Master Hub Configuration & Console Management 91 Primary Link Port: This object identifies the port number ofthe primary link for a given redundant link pair. Secondary Link Group: This object identifies the hub ID ofthe secondary link for a given redundant link pair. Secondary Link Port: This o...

Master Hub Configuration & Console Management 93 Configuring Redundant Link Control Editing a Link PairYou can edit a Link Pair by entering the Link Pair number (of an existingLink Pair) and reconfiguring the rest of the columns, then select Save; theLink Pair is updated to the new settings. Del...

Master Hub Configuration & Console Management 95 • Invalid: Purge the security intrusion control configurationfor the current port from the system database. Intrusion Authentication Address Auto Learn• Enable: The hub learns the MAC address of the first devicefrom which this port receives data. ...

96 10/100 Managed Hub Monitoring the Network Statistic counters can be monitored for each repeater group and its ports.The Monitoring Network Menu displays the monitoring sub menus. Monitoring Network Menu Repeater Statistics Information: Contains Hub statistics suchas Tx collisions, total frames an...

Master Hub Configuration & Console Management 97 Broadcast Storm Protection: Monitor the broadcast counters ofeach hub port to detect if broadcast storming exists in thenetwork. Broadcast Storm Detected: Each hub port or optional moduleport which causes the broadcast storm displays. Repeater Sta...

98 10/100 Managed Hub You can monitor the statistics in Absolute or Relative counters. Thedefault is Absolute counters. Repeater Statistics Information Menu (Relative) Total Tx Collisions: The number of transmission collisions thathave occurred in this hub. Total Frames: The number of frames receive...

Master Hub Configuration & Console Management 99 Repeater Group Statistics InformationThe Repeater Group Statistics Information Menu displays statisticscounters for each group. Absolute Repeater Group Statistics Information Menu (Absolute) Statistics information counters for the current hub (Gro...

100 10/100 Managed Hub Relative Repeater Group Statistics Information Menu (Relative) Total Frames: The number of frames of valid frame length thathave been received on the ports of this hub and not includingFCS Error and Collision Event. Total Octets: The total number of octets contained in the val...

Master Hub Configuration & Console Management 101 Repeater Port Statistics InformationThe Repeater Port Statistics Information Menu shows statistics inAbsolute and Relative values. Absolute Repeater Port Statistics Information Menu (Absolute) The Repeater Port Statistics Information Menu display...

102 10/100 Managed Hub Relative Repeater Port Statistics Information Menu (Relative) Display Mode: Relative counters represent the values collectedsince the relative mode was selected. Absolute values representthe value collected since system start. Group Number: The ID number of a hub in the stack....

Master Hub Configuration & Console Management 103 FCS Errors: The total number of packets received by the portthat had a bad Frame Check Sequence. Alignment Errors: Total Alignment Errors frames within theproper size (64 to 1518 octets) received by the port. Frame Too Long: Total frames received...

Master Hub Configuration & Console Management 105 Address Tracking InformationThe Address Tracking Information Menu provides per port based nodetracking capability (MAC address based). This capability provides thebasic traffic analysis function to diagnose network problems, such asIntrusion. The...

Master Hub Configuration & Console Management 107 Address Search InformationSelecting this option presents the Address Search Information Menu asshown below. Address Search Information Menu The 10/100 Managed Hub provides per segment based source (MACaddress) matching capability. The active addr...

Master Hub Configuration & Console Management 109 Broadcast Storm ProtectionThe Hub periodically monitors the broadcast counters of each hub port todetect a broadcast storm condition. If a hub port is detected to be causinga broadcast storm, it is automatically partitioned and a trap is sent to ...

Master Hub Configuration & Console Management 111 Formula for calculating Broadcast packet rate Broadcast packet rate = Broadcast packet received SamplingInterval in Seconds Broadcast Storm DetectedThis menu displays a list of ports with a detected Broadcast Storm. Broadcast Storm Detected Menu ...

112 10/100 Managed Hub User Authentication The User Authentication Menu is used to assign user login names,passwords and read/write privileges. The Mini Console password can beconfigured in the User Authentication Menu. User Authentication Menu To define each user authentication, select an index num...

Master Hub Configuration & Console Management 113 User Authentication Menu (editable) User Authentication Menu (updated) Select the index number first and press Enter. Enter a user name of up to12 characters and a password of up to 6 characters, specify read/writeprivilege and then press <Ent...

114 10/100 Managed Hub System Utility The System Utility Menu lets you download microcode, restart the Hub,reset the Hub to the factory default, set the login time-outs, configure theupload settings and request an upload. System Utility Menu System Download: System downloads are used to update syste...

Master Hub Configuration & Console Management 115 System DownloadThe System Download Menu enables reading Boot Sever Informationfrom a remote BOOTP Server and to download system configurationfiles, Web Server database information and system software from aremote TFTP Server. To download software...

Master Hub Configuration & Console Management 117 System Restart Menu You can restart the system at any time without losing configurationsettings, except in the case of a download. When you select Execute andthen select <Enter>, a warning message informs the user that systemrestart is goin...

118 10/100 Managed Hub Factory ResetThe Factory Reset Menu allows resetting 10/100 Managed Hub to theoriginal factory settings. All user configurations will be lost. A ConfirmMessages displays before the hub is reset so the user can abort the factoryreset. Factor y Reset Menu The Factory Reset Menu ...

Master Hub Configuration & Console Management 119 2. Select how the user wants the user authentication configuration processed during a factory reset:• Not Reset: Current user authentication configurationis saved. • Reset to factory default: Current user authenticationconfiguration returns to fa...

122 10/100 Managed Hub Upload Status: The status of the data transfer with regardto errors.• No Error: The upload was successfully stored in thespecified configuration file. • No-Such-File: The path specified in the ConfigurationFilename field cannot be found on the TFTP Server. • Access Violation: ...

Technical Information 123 Chapter 5 Technical Information Product Specifications Standards Compliance IEEE 802.3 10BASE-T, 10BASE5 EthernetIEEE 802.3u 100BASE-TX Ethernet Number of Ports 12/24 auto-sensing 10/100M Ethernet(RJ-45) ports Display Panel Master: Vacuum Fluorescent Display (VFD) providing...

Technical Information 125 Power Requirements 100 - 240 VAC, 50/60 HzInternal universal power supply Environment Operating Temperature: 10 ° to 40 ° C Storage Temperature: -25 ° to 70 ° C Operating Humidity: 8% to 80% non- condensing Safety Regulations CUL (UL & CSA) EMI Certifications CE MarkFCC...

126 10/100 Managed Hub Agency Compliance Product Safety and Compliance StatementsThis equipment complies with the following requirements: • UL • CSA • TUV • EN60950 (safety) • FCC Part 15, Class A • EN55022 Class A (emissions) • EN50082-1 (immunity) • IEC 825-1 ClassificationClass 1 Laser Product Ra...

Technical Information 127 Electrical Safety StatementNormas Oficiales Mexicanas (NOM) INSTRUCCIONES DE SEGURIDAD1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas pa...

Appendix 129 Appendix Mini Console Menu Tree UTILIZA TION GROUP SELECT GROUP 1~GROUP N ST A TISTICS POR T ST A TUS ALL POR TS HW VER SW VER IP ADDRESS SUBNET MASK DEF AUL T GA TEW A Y 10M POR TS 100M POR TS LINK UP LINK DOWN POLAR NORMAL POLAR REVERS POR T 1~POR T N 1200 2400 4800 9600 19200 38400 A...

130 10/100 Managed Hub Troubleshooting the Network Q: The local-console ‘login screen’ does not come up sometimes when a terminal (PC running terminal emulation) is connected to alreadybooted master hub. Why? A: The screen must be refreshed, when the 10/100 Managed Hub is running and the terminal em...