Manuale d’uso / di manutenzione del prodotto SMC6608M del fabbricante SMC Networks
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T igerSwitch 100 User Guide From SMC’s Tiger line of feature-rich workgroup LAN solutions March 1998 900.168 Rev. B.
SMC6608T SMC6608M T igerSwitch 100 8-port Fast Ethernet Switches ◆ T wo models featuring either: ◆ Eight fixed Auto-Negotiating 100BASE-TX ports ◆ T wo 4-port replaceable modules with 100BASE-TX and/or 100BASE-FX ports ◆ 1.
Information fur nished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However , no responsibility is assumed by SMC for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
Limited W arranty HARDW ARE: SMC Networks, Inc. (“SMC”) warrants these TigerSwitch 100 units to be free from defects in workmanship and materials, under normal use and service, for the following length of time from the date of purchase from SMC or its Authorized Reseller: TigerSwitch 100 .
SMC with a Return Material Authorization (RMA) number marked on the out- side of the package, and sent prepaid, insured, and packaged appropriately for safe shipment. The repaired or replaced item will be shipped to Customer , at SMC’s expense, not later than thirty (30) days after receipt by SMC.
Compliances .......................................................... v 1 About The T igerSwitch 100 ........................... 1-1 TigerSwitch 100 Overview ................................................. 1-3 Switch Architecture ..................
Appendices A T r oubleshooting ............................................ A-1 Switch Indicators ................................................................. A-2 Diagnostic T ests .................................................................
List of Figur es 1-1. TigerSwitch 100T with 8 10BASE-T/100BASE-TX Ports (Model SMC6608T) ..................................................... 1-4 1-2. TigerSwitch 100M Base Unit...................................... 1-4 1-3. 4-Port Fast Ethernet Modules .
4-8. Virtual LAN Configuration Screen ............................. 4-18 4-9. System Information Screen ........................................ 4-21 4-10. Port Status Screen....................................................... 4-22 4-11. Statistics Screen .
FCC - Class A This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause interference to radio communications.
Cet appareil numérique respecte les limites de bruits radioélectriques applica- bles aux appareils numériques de Classe A prescrites dans la norme sur le matériel brouilleur : "Appareils Numériques", NMB-003 édictée par l’Industrie.
Wichtige Sicher heitshinweise 1. Bitte lesen Sie diese Hinweise sorgfältig durch. 2. Heben Sie diese Anleitung für den späteren Gebrauch auf. 3. V or jedem Reinigen ist das Gerät vom Stromnetz zu trennen. V erwenden Sie keine Flüssigoder Aerosolreiniger .
13. Öffnen sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem Servicepersonal geöffnet werden. 14. W enn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer qualifizierten Servicestelle zu überprüfen: a.
TigerSwitch 100 Overview . . . . . . . . . . . . . . . 1-3 Fast Ethernet Modules for Model SMC6608M . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Switch Ports . . . . . . . . . . . . . . . . . . . . . . . 1-6 10BASE-T/100BASE-TX Ports . . . . . .
Management Options . . . . . . . . . . . . . . . . . . . 1-12 Serial Console Port . . . . . . . . . . . . . . . . . . 1-12 T elnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T igerSwitch 100 Overview SMC’s TigerSwitch™ 100 units are intelligent Fast Ethernet switches. There are two TigerSwitch 100 models available. The first, the TigerSwitch 100T (SMC6608T) , features 8 fixed 10BASE-T/100BASE-TX ports.
Figure 1-1. TigerSwitch 100T with 8 10BASE-T/100BASE-TX Ports (Model SMC6608T) Figure 1-2. TigerSwitch 100M Base Unit (Model SMC6608M) Figure 1-3. 4-port Fast Ether net Modules A BOUT THE T IGER S WIT.
4-Port Fast Ethernet Modules for Model SMC6608M The avalable slide-in modules are listed below: 1-5 A BOUT THE T IGER S WITCH 100 SMC6600T 1-3 RJ-45 100BASE-TX, fixed crossover 4 RJ-45 100BASE-TX, swi.
Switch Ports 10BASE-T/100BASE-TX Ports These ports are dual-speed RJ-45 ports with built-in wiring crossovers. Each TigerSwitch 100 equipped with 10BASE-T/ 100BASE-TX ports will contain at least one straight-through (daisy-chain) port. This port is used for straight-through cable connections to other devices (i.
Status LEDs The LEDs on the TigerSwitch 100 models are located on the front panel for easy viewing. For a more complete discussion of the front-panel LEDs, see Chapter 4, “Configuration and Management.
Console Port Both TigerSwitch 100 units contain a Console port on the front panel. This is an RS-232 serial port with a DB-9 connector . A PC may be connected to this port for configuration and monitoring purposes out-of band via a full-handshaking null modem cable.
Optional Redundant Power Unit SMC’s Redundant Power Units (RPUs) are separate devices and each has its own power cord. These devices can supply power to the unit in the event of a failure of the internal power supply. The available RPUs are listed in the table below.
Switch Ar chitecture Switching Methods Adaptive Cut-Through SMC’s TigerSwitch 100 models employ a dynamic forwarding architecture that enables them to support adaptive cut-through frame forwarding mode.
Spanning T ree Protocol The TigerSwitch 100 switches support the ANSI/IEEE 802.1d Spanning T ree Protocol. This protocol adds a level of fault tolerance by allowing two or more redundant connections to be created between a pair of LAN segments.
Management Options The TigerSwitch 100 units may be managed using any one of the following three methods: ♦ Out-of-band via the RS-232 console port ♦ In-band via T elnet ♦ In-band via any SNMP-b.
Key Featur es and Benefits Connectivity • Slide-in, replaceable 4-port modules for added flexibility (Model SMC6608M only) • 100BASE-FX ports with SC or ST connectors (Model SMC6608M only) • Aut.
• Operates at maximum packet filtering and forwarding rate • Supports cut-through, store-and-forward, fragment-free and adaptive cut-through packet transport techniques • Routing table with over.
2-1 Introduction to Switching . . . . . . . . . . . . . . . . 2-2 Sample Applications . . . . . . . . . . . . . . . . . . . 2-3 Collapsed Backbone . . . . . . . . . . . . . . . . . 2-3 Multiport Bridging . . . . . . . . . . . . . . . . . . . 2-4 High-Speed Switch Links .
Introduction to Switching An Ethernet or Fast Ether net switch allows simultaneous transmission of multiple packets via high-bandwidth shared memory. This means that it can partition a network more efficiently than bridges or routers.
Sample Applications The TigerSwitch 100 is not only designed to segment your network, but also to provide a wide range of options in setting up network connections.
Multiport Bridging With 8 parallel bridging ports (i.e., 8 distinct collision domains), the TigerSwitch 100 can collapse a complex network down into a single efficient bridged node, increasing overall bandwidth and throughput.
Server Far m Aggregation The advantages of mixed-media can also be easily exploited with the TigerSwitch 100M because of the various port configu- rations available among its 4-port modules.
High-Speed Switch Links Most common LAN implementations use a combination of hubs, bridges and routers. The bridges and routers quickly become bottlenecks, reducing overall network throughput.
2-7 PLANNING Collapsed Backbone with Fiber Cable Fiber optic technology allows for a longer cable run distance (up to 2 km in full-duplex) than any other media type.
PLANNING 2-8 High-Speed Fiber Backbone When maximum network reach is required, the TigerSwitch 100M (Model SMC6608M) can be used to help create a high- speed fiber backbone. In the figure below, a TigerSwitch 100M employed as a collapsed backbone is also part of a full-duplex, 200 Mbps fiber backbone.
Application Notes 1. Full-duplex operation only applies to point-to-point access (e.g., when the switch is attached to a workstation, server or another switch). When the switch is connected to a hub, both devices must operate in half-duplex mode. 2. For network applications that actually require routers (e.
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Selecting a Site . . . . . . . . . . . . . . . . . . . . . . . 3-2 Equipment Checklist . . . . . . . . . . . . . . . . . . . 3-3 Package Contents . . . . . . . . . . . . . . . . . . . 3-3 Required Rack-Mounting Equipment . . . . . 3-3 Mounting . . . .
Selecting a Site Before you start actual hardware installation, make sure you can provide the right operating environment, including power requirements, sufficient physical space and proximity to other network devices. V erify the following installation requirements: ◆ The site should: • be located in a cool, dry place, with at least 4 in.
Equipment Checklist Package Contents In addition to this user guide, the package should contain: ◆ one (1) TigerSwitch 100 switch • Model SMC6608T (8 10BASE-T/100BASE-TX ports) or • Model SMC660.
Mounting The TigerSwitch 100 is suitable for desktop or rack-mount installation. A good location is at the center of all the devices you want to link and near a power outlet. This switch can also be stacked with other switches on a flat surface or in a rack.
T o rack mount the switch: 1. Attach the brackets to the device using the screws provided. Figure 3-1. Attaching the Brackets 2. Mount the device in the rack, using four rack-mounting screws.
Mounting and Stacking the Switch on a Flat Sur face 1. Attach the four adhesive feet to the hollow spaces on the bottom of the switch. Figure 3-3. Attaching the Adhesive Feet 2. Set the switch on a flat surface near an AC power source, making sure there are at least 4 inches (10 cm) of space in the front and back for proper air flow.
Powering Up Connecting to a Power Source 1. Power on the switch by plugging one end of the power cord into the power socket on the rear panel, and the other end into a power outlet.
I NSTALLA TION 3-8 3. Check to insure that the front-panel Power LED is lit. If not, check that the power cable is correctly plugged in. (Refer to Chapters 1 and 4 for detailed explanations of the LEDs.) Diagnostics Upon power up, the system performs an inter nal self-diagnostic test of major switch components.
Making Network Connections Switches are designed to interconnect multiple segments, or collision domains. Each segment may contain a single server or workstation, or multiple workstations that are connected to a hub. Connectivity Rules An overview of the rules for both Ethernet and Fast Ether net collision domains is provided below.
100 Mbps Fast Ethernet Collision Domain SMC 3 - 2 Rule for Class II Repeaters SMC 2 - 1 Rule for Class I and Class II Repeaters Maximum 100BASE-T Network Diameter Maximum 100BASE-T Cable Distance I NS.
T wisted-Pair Cabling Guidelines Each 10BASE-T or 100BASE-TX connection requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors at both ends. For 10BASE-T connections, two pairs of 100 Ohm Category 3, 4 or 5 cable are required. 100BASE-TX connections require two pairs of certified Category 5 cable.
Connecting 10BASE-T/100BASE-TX Ports Fixed Crossover Ports Insert the RJ-45 connector on one end of a twisted-pair cable into an unused 10BASE-T/100BASE-TX port on the TigerSwitch 100, and the RJ-45 connector on the other end into a port on the other device.
Connecting 100BASE-FX Ports TigerSwitch 100M fiber modules are equipped with either SC or ST connectors. Connect one end of a fiber optic cable to the appropriate fiber connector on the front panel of the TigerSwitch 100M, and the other end to the connector on the other device.
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Configuration Options . . . . . . . . . . . . . . . . . . 4-3 Basic Port Settings . . . . . . . . . . . . . . . . . . . . . 4-4 Advanced System Configuration . . . . . . . . . . . 4-5 Required Connections and Switch Access . . 4-5 Console Port (Out-of-Band) Connections 4-5 Remote Management via the Console Port 4-5 In-Band Connections .
System Monitoring . . . . . . . . . . . . . . . . . . . . . 4-19 Monitoring via the Configure Button and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 4-19 Advanced System Monitoring . . . . . . . . . . . 4-21 System Information . . . . . . .
Configuration Options Basic port communication modes can be configured manually through the use of the front-panel Configure button. For more advanced management capability, the TigerSwitch 100 provid.
Basic Port Settings When using the Configure button to set port communication modes: 1. Use a long press (>2 seconds) to begin function selection. The Status LED will start to flash to indicate that functions may be selected. Use short presses (<2 seconds) to cycle through the status LEDs until the Full/Half LED lights.
Advanced System Configuration Required Connections and Switch Access Console Port (Out-of-Band) Connections 1. Plug the female end of a standard RS-232 null-modem cable into the switch connector labeled “Console”.
9600 and the A T command set is supported. Set the terminal emulation type on the PC to VT100 and specify which PC COM port is being used. Then, set communications to 8 data bits, 1 stop bit, no parity and the baud rate to 9600 or 19200 bps. The default rate is 9600 bps.
The System Configuration Program Login The System Configuration Program software types and versions appear on this screen. The default passwords for the System Configuration Program are “admin” and “guest”. The admin password provides administrator rights (i.
Main Menu The Main Menu provides access to all the sub-menus necessary to configure and monitor the switch. Figure 4-2. System Configuration Pr ogram Main Menu Main Menu Items Information and Statistics: System Infor mation: Provides detailed system description.
Configuration: System Configuration: Shows basic IP setup and identifies system by name, location and contact. SNMP Configuration: Configures communities and trap managers. Password Configuration: Sets Administrator and User passwords. V irtual LAN Configuration: Assigns switch ports to form up to 8 independent LAN groups.
Setting Passwords 1. Highlight “ Password Configuration ” in the Main Menu and press <ENTER>. This will access the Password Configuration Screen (See below). Figure 4-3. Passwor d Configuration Screen 2. Highlight “ Set Administrator Password ” and press <ENTER> to password protect administrator rights (Read/W rite privileges).
Console Port Configuration The communications parameters for the RS-232 port can be set using the System Configuration Program. Figure 4-3 (below) illustrates the factory default settings. Figure 4-4. Console Configuration Scr een 1. Highlight “ Console Configuration ” in the Main Menu and press <ENTER>.
System Parameter Configuration 1. Highlight “ System Configuration ” in the Main Menu and press <ENTER>. This will access the System Configuration Screen (See below).
6. Highlight “ Default Gateway ” and press <ENTER> to set the default gateway IP address to which the unit will send IP packets destined for a different subnet. Press <ENTER> again to confirm entry. 7. Highlight “ Subnet Mask ” and press <ENTER> to set the sub- net mask corresponding to the assigned IP address.
Port Configuration 1. Highlight “ Port Configuration ” in the Main Menu and press <ENTER>. This will access the Port Configuration Screen illustrated below.
5. Highlight the setting under the “ SwitchingMode ” column to adjust the switching method for the chosen port. Press <ENTER> to use the arrow keys to cycle through Cut-through (CT), Store-and-forward (S&F), Adaptive cut- through (A-CT) or Fragment-free (FgFree) modes.
Spanning T ree Configuration The Spanning T ree Protocol (STP) is used to detect and disable network loops and to provide link back-up. It requires certain parameter settings. The factory default settings (See Figure 4-6) should be acceptable in most networks.
4. Highlight “ Hello T ime ” and press <ENTER> to input a value (1 to 10 seconds) for the rate at which hello frames are to be generated. Press <ENTER> again to confirm the chosen value.
Virtual LAN Configuration Switches do not inherently support broadcast domains. Use the Virtual LAN Configuration screen (Figure 4-7) to assign any port on the switch to up to 8 broadcast domain groups*. All ports on the switch are assigned to a single group by default.
System Monitoring The TigerSwitch 100 units can be monitored using either the front-panel Configure Button and LEDs, SNMP and T elnet or the Console Interface. Monitoring via the Configure Button and LEDs The Configure button may be used with the front-panel LEDs to display various system operations characteristics.
4-20 CONFIGURATION AND MANAGEMENT Status LEDs LEDs Functions Power Indicates that the switch is receiving power . RPU Indicates that the optional Redundant Power Unit is supplying power to the switch. Status Indicates that the LED array is displaying status information for each port (This is the default display mode).
Advanced System Monitoring These following display screens can be accessed through the System Configuration Program Main Menu under the Information and Statistics section. The following section headings reflect the items available in this area of the Main Menu.
Port Status This screen displays the current status of each port on the switch. Figure 4-10. Port Status Scr een Port Status Screen Items 4-22 CONFIGURATION AND MANAGEMENT Parameter Description Media Type Displays Port type (100BASE-FX, etc.
Statistics This screen displays statistical information for any port or the entire switch, depending on the display mode chosen. (See Item 1 below) Figure 4-11. Statistics Scr een This screen provides the following options: 1. Highlight “ Display ” and press <ENTER> to select statistical display.
Statistics Screen Items 4-24 CONFIGURATION AND MANAGEMENT Item Description Time Since Last Number of times this port (or whole switch) or Reset of Statistics address table has been reset since power o.
Address Table Figure 4-12. Addr ess T able Scr een This screen provides the following options: 1. Highlight “ Display ” and press <ENTER> to select address table display. Use arrow keys to cycle through display selections (Ports 1-8 or the whole switch).
Spanning T ree Information The screen illustrated in Figure 4-12 shows a summary of the Spanning T ree configuration. This screen is only accessible if the Spanning T r ee Protocol is enabled (See the section entitled, “Spanning Tr ee Configuration” in this chapter) .
Spanning T ree Infor mation Scr een Items 4-27 CONFIGURATION AND MANAGEMENT Parameter Description Hello Time Displays the rate (in seconds) at which hello frames are generated. Forward Delay The amount of time (in seconds) any port in the Spanning T ree will wait before changing states (i.
Downloading System Softwar e System software updates can be downloaded either in-band via TFTP Protocol or out-of-band through the console port. Downloading software via TFTP is substantially faster than serial downloading through the console port. After either type of file transfer , the switch will automatically restart.
4. Highlight “ Execute Network Download ” and press <ENTER>. The system will ask for confirmation. Press <ENTER> to initiate download after confirmation.
Resetting the Switch Figure 4-15. Reset Scr een This screen provides the following options: 1. Highlight “ Reset ” in the Main Menu and press <ENTER> to access the reset screen (Figure 4-14). 2. Highlight “ Display Diagnostics While Power-On ” and press <ENTER> to enable/disable diagnostic indicators during a reset.
SNMP Protocol . . . . . . . . . . . . . . . . . . . . . . . 5-2 MIB Objects . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 SNMP Parameter Configuration .
SNMP Protocol SNMP (Simple Network Management Protocol) is a communica- tion protocol designed specifically for the purpose of managing devices or other elements on a network. Network equipment commonly managed with SNMP includes hubs, switches, bridges, routers and host computers.
the manager software, and result in a response by the agent. The third operation type, the TRAP , allows the agent to send an unsolicited message to the manager . This operation is typically used as an alert to a potential problem, or a change in device status.
SNMP Parameter Configuration In order to access the SNMP agent resident in the TigerSwitch 100 units, the switch must be configured with a valid IP address, default gateway and subnet mask.
3. Highlight “ Community Strings ” and press <ENTER>. This will access the Community Strings screen (Figure 5-2). Figure 5-2. Community Strings Scr een 4. Highlight “ Add Entry ” and press <ENTER> to input a community name and its access mode.
5. Highlight “ T rap Receivers ” in the SNMP Configuration screen (Figure 5-1) and press <ENTER> to access the T rap Receivers screen (Figure 5-3). Figure 5-3. Trap Receivers Screen 6. Highlight “ Add Entry ” and press <ENTER> to input an IP Address for a receiver station and assign a community name and index for that station.
Switch Indicators . . . . . . . . . . . . . . . . . . . . . . A-2 Diagnostic T ests . . . . . . . . . . . . . . . . . . . . . . . A-3 System Diagnostic T ests . . . . . . . . . . . . . . . A-3 Port Diagnostic T ests . . . . . . . . . . . . . . . . . A-4 System Diagnostics .
Switch Indicators The LED indicators on TigerSwitch 100 can be of assistance in identifying problems. Some common problems and possible solutions are described below. Symptom: Link LED does not light up (green) after making a connection. Cause: Network interface (e.
Diagnostic T ests Upon power-up, the TigerSwitch 100 units perform self- diagnostic tests (See Chapter 3). Diagnostic tests similar to those perfor med on power-up can be run using the Configure button: 1. Use a long press (>2 seconds) to begin function selection.
Port Diagnostic T ests Port Diagnostic T ests, the second diagnostic test phase, check each port. The following table details port failures, which are indicated in the column of the LED array correspo.
Communication Mode The communication mode of each port (half or full duplex and 10 Mbps or 100 Mbps) must be identical to the mode of the attached device. V erify that each port is set to the same communication modes used by the attached device. Each 100BASE-FX port must be configured for half- or full-duplex operation.
down by implementing the new changes, one step at a time. Ensure that cable distances and other physical aspects of the installation comply with recommendations. (See “Making Network Connections” in Chapter 3.) Management Inter face T er minal Emulation If the terminal attached to the console port is not operating properly, check that: 1.
System Integrity As a last resort, verify the integrity of the switch with a power- on reset (See Chapter 4, “Configuration and Management”). If the problem still persists and you have completed all the preceding diagnoses, contact SMC T echnical Support for further assistance.
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RJ-45 Pin Assignments . . . . . . . . . . . . . . . . . . B-2 Straight-through Wiring . . . . . . . . . . . . . . . B-3 Crossover Wiring . . . . . . . .
RJ-45 Pin Assignments Caution: Regulations regarding the connection of equipment to telephone networks vary from country to country. Check with your local telephone network supplier before using existing telephone wiring.
Straight-Through Wiring If the twisted-pair link segment is to join two ports and only one of the ports has an internal crossover , the two pairs of wires must be straight-through.
Console Port Pin Assignments The DB-9 serial console port on the front-panel is used to connect the switch to a console device, either directly or remotely. The pin assignments for connection to another DB-9 port or a DB-25 port are provided below and on the following pages.
Console Port to 9-Pin COM Port on PC Console Port to 25-Pin DCE Port on Modem B-5 P IN A SSIGNMENTS Switch Port PC Port DB-9 Pin No. Signal DB-9 Pin No. 1 (DCD) DCD 1 2 (RXD) TXD 3 3 (TXD) RXD 2 4 (DTR) DSR 6 5 (SGND) SGND 5 6 (DSR) DTR 4 7 (RTS) CTS 8 8 (CTS) RTS 7 9 (RI) RI 9 Switch Port 25-Pin Modem Port DB-9 Pin No.
Console Port to 25-Pin DTE Port on PC Null Modem Switch Port DB-9 Pin No. 1 (DCD) 2 (RXD) 3 (TXD) 4 (DTR) 5 (SGND) 6 (DSR) 7 (RTS) 8 (CTS) 9 (RI) 11 23 32 48 52 0 67 74 95 20 6 P IN A SSIGNMENTS B-6 25-Pin PC Port DTE Pin No.
All Models . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2 Model SMC6608T . . . . . . . . . . . . . . . . . . . . . . C-4 Model SMC6608M . . .
All Models Switching Methods Adaptive Cut-through Cut-through Store-and-forward Fragment-Free Memory Buffer 256K per port Filtering/Forwarding/Lear ning Rates Full line rate MAC Address Table 4,096 en.
Full/Half Diagnostic LED Array Tx/Rx (60%) 100Mbps (30%) Full-Duplex (10%) Select/Link (1%) Button Configure Size 17.25 in. x 13.75 in. x 1.75 in. (43.
Model SMC6608T Ports 8 10BASE-T/100BASE-TX, Auto-Negotiation support Network Inter face 10BASE-T RJ-45 connector , 100 Ohm, UTP cable; 2 wire pair; EIA/TIA Categories 3, 4, 5 100BASE-TX RJ-45 connector , 100 Ohm, UTP cable; 2 wire pair; EIA/TIA Category 5 W eight 8.
Network Inter face 10BASE-T RJ-45 connector , 100 Ohm, UTP cable; 2 wire pair; EIA/TIA Categories 3, 4, 5 100BASE-TX RJ-45 connector , 100 Ohm, UTP cable; 2 wire pair; EIA/TIA Category 5 100BASE-FX SC or ST connector , multimode fiber cable, 50/125 or 62.
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Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2 A PPENDIX D G LOSSAR Y D-1.
10BASE-T IEEE specification for 10 Mbps Ethernet on two pairs of Category 3, 4 or 5 twisted-pair cable. The point-to-point cable segment can be up to 100 m (328 ft.) in length. 100BASE-FX IEEE specifications for 100 Mbps Fast Ethernet on multimode fiber optic cable.
Collision A condition in which packets transmitted over the cable interfere with each other . Their inter ference makes both signals unintelligible. Crossover Port An RJ-45 port which crosses the rece.
ICMP (Internet Contr ol Message Pr otocol) Commonly used to send echo messages (i.e., Ping) for monitoring purposes. In-Band A way of communicating with a network device from inside the network (i.e., a local connection). LED Light emitting diode used for monitoring a device or network condition.
T er minator A resistor placed at each end of a thick or thin coax cable to make sure that signals do not reflect back and cause errors. Simple Network Management Protocol (SNMP) The application protocol offering network management services in the Internet suite of protocols.
Publication Number: 900.168, Rev . B FOR TECHNICAL SUPPORT , CALL: From U.S.A. and Canada (8:30 AM - 8:00 PM Eastern T ime) (800) SMC-4-YOU; (516) 435-6250; (516) 434-9314 (Fax) From Europe (8:00 AM -.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il SMC Networks SMC6608M è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del SMC Networks SMC6608M - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso SMC Networks SMC6608M imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul SMC Networks SMC6608M ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il SMC Networks SMC6608M, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del SMC Networks SMC6608M.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il SMC Networks SMC6608M. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo SMC Networks SMC6608M insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
