Related Manuals for 3Com Hub 1000 SX
Summary of Contents for 3Com Hub 1000 SX
-
Page 1: User Guide
SuperStack ® User Guide A member of the 3Com SuperStack II System http://www.3com.com/ Part No. 09-1354-000 Published March 1998 II Hub 1000 SX ®... - Page 2 3Com Corporation reserves the right to revise this documentation and to make changes in content from time 95052-8145 to time without obligation on the part of 3Com Corporation to provide notification of such revision or change. 3Com Corporation provides this documentation without warranty of any kind, either implied or expressed, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
-
Page 3: Table Of Contents
ONTENTS BOUT UIDE NTRODUCTION Hub 1000 SX General Description Downlinks and Uplink Full-Duplex Operation Flow Control Asymmetric Flow Control Symmetric Flow Control Auto-Negotiation Forced Link Features and Functions NSTALLING THE Safety Precautions Package Contents Hub Description Front Panel Rear Panel... - Page 4 Aggregating Servers Connecting a Power Workgroup Aggregating Switches Mixing Connections Connecting Through the Uplink Troubleshooting Requirements Connecting the Console Port Logging On Changing the Password Configuring Port Settings Displaying Hub Status Restoring the Factory Default Settings Updating the Firmware Image Logging Off Troubleshooting AKING...
- Page 5 PECIFICATIONS ECHNICAL UPPORT Online Technical Services World Wide Web Site 3Com Bulletin Board Service Access by Analog Modem Access by Digital Modem 3ComFacts Automated Fax Service 3ComForum on CompuServe Online Service Support from Your Network Supplier Support from 3Com Returning Products for Repair...
- Page 7 IGURES Hub 1000 SX Front and Rear Panels Attaching a Bracket for Rack Mounting Rack Mounting the Hub Sample GBIC Module Server Farm Connection Power Workgroup Connection Aggregated Switches Connection Mixed Connection Connection to Another Hub 1000 SX Uplink Connection to a 10/100 Mbps Switch...
- Page 9 ABLES Notice Icons Text Conventions Downlink Connections Hub 1000 SX Indicators GBIC Modules Advanced RPS Configuration Options Gigabit Ethernet Maximum Cable Lengths Troubleshooting Tips Situations That Require Configuring Port Settings Port Configuration Menu Hub Status Information File Transfer Error Messages...
-
Page 11: About This Guide
Notice Type Description Information note Important features or instructions Caution Information to alert you to potential damage to a program, system, or device Warning Information to alert you to potential personal injury UIDE ® II Hub 1000 SX Gigabit Ethernet... - Page 12 BOUT UIDE Table 2 Convention Screen displays Commands The words “enter” and “type” Keyboard key names Menu commands and buttons Words in italicized type Italics emphasize a point or denote new terms at the place Words in bold-face type Text Conventions Description This typeface represents information as it appears on the screen.
-
Page 13: Introduction
The Hub 1000 SX is part of the 3Com SuperStack II system and can be used with the SuperStack II Advanced Redundant Power System (Advanced RPS) and the SuperStack II Uninterruptible Power System (UPS), which provide fail-safe operation and a constant power supply. -
Page 14: Downlinks And Uplink
For Gigabit Ethernet devices, full-duplex operation allows a peak data transmission rate of 2 Gbps. All Hub 1000 SX ports operate only in full-duplex mode and receive frames from attached segments at a speed of 1 Gbps. -
Page 15: Asymmetric Flow Control
flow control. For example, the result of an auto-negotiation sequence between a Hub 1000 SX downlink and a SuperStack II Switch 3000 port is that the downlink uses outgoing flow control and the switch port uses incoming flow control. -
Page 16: Features And Functions
1: I HAPTER NTRODUCTION Features and The hub can be mounted in a 19-inch standard rack or placed on a Functions flat surface. It supports the 1000 Mbps media access control (MAC) as specified in the IEEE 802.3z standard. In addition, the hub has these features: LED indicators report the status of each port and of hub operations. -
Page 17: Installing The Hub
No configuration is required to install and use the hub. Safety Precautions To avoid personal injury or damage to the Hub 1000 SX unit, observe the following safety precautions: WARNING: Do not perform any maintenance on the hub while it is still connected to a power source. -
Page 18: Hub Description
2: I HAPTER NSTALLING THE If you need to return the hub to 3Com, pack it in the original (or equivalent) packing material to maintain the warranty. If you ordered a GBIC module or optional power system, it is packaged separately from the hub. -
Page 19: Rear Panel
For information on the console functions, see Appendix A. The Reset button resets the hub’s on-board CPU. The GBIC port accepts an optional 3Com GBIC module that lets the hub connect to a Gigabit Ethernet device. Preparing the Site... - Page 20 2: I HAPTER NSTALLING THE Figure 2-2 Attaching a Bracket for Rack Mounting 3 Insert the two screws and tighten with a screwdriver. Do not overtighten the screws. 4 Repeat steps 2 and 3 for the other side of the hub. 5 Mount the hub in the rack and secure it with suitable screws, as shown in Figure 2-3.
-
Page 21: Placing On A Desktop
Table 2-1 Downlink Connections Connector Type 7 Apply power to the hub in either of these ways: Placing on a Desktop If you place the hub on a desk or table, attach the supplied rubber feet to each bottom corner of the hub. Remove the protective cap from each downlink port and attach the proper cable to make the desired network connection. - Page 22 2: I HAPTER NSTALLING THE Table 2-2 Hub 1000 SX Indicators % BW USAGE Indicator Color % BW usage meter Green PORT STATUS LEDs ACTIVITY Green LINK Green Hub operation LEDs OVERTEMP Amber RPS ON Green UNIT STATUS Amber Green...
-
Page 23: Installing And Connecting A Gbic Module
Installing and The gigabit interface connector (GBIC) port on the rear panel of the Connecting a Hub 1000 SX chassis accepts an optional 3Com GBIC module that GBIC Module permits connection to a Gigabit Ethernet device. GBIC modules must be ordered separately in either single-packs or six-packs. -
Page 24: Using Optional Power Systems
Advanced RPS A single SuperStack II Advanced RPS (part numbers 3C16070 and 3C16071) can protect up to four SuperStack II Hub 1000 SX units from internal power supply failures. If a SuperStack II unit’s internal power fails, the Advanced RPS is capable of supplying all the unit’s power needs. -
Page 25: Power Modules
Advanced RPS management console software. Cabling Options You can supply AC power and DC power to the Hub 1000 SX simultaneously, so that if an AC power failure occurs, the hub switches to DC power supplied by the Advanced RPS unit. You can also supply only DC power to the hub with the Advanced RPS unit. -
Page 26: Uninterruptible Power System
When switching from Advanced RPS (DC) to AC power or from AC power to Advanced RPS power, the Hub 1000 SX unit resets itself. For example, if both the RPS and AC cables are plugged in, and then either is removed, the unit resets itself when it changes to the other power source. - Page 27 Advanced RPS: 1 Calculate the total wattage of all the units connected to the Advanced RPS. For example, one Hub 1000 SX has a maximum power consumption of 65 watts; two Hub 1000 SX units have a maximum power consumption of 130 watts, and so forth.
-
Page 29: Making Connections
* The 1000BASE-LX GBIC module requires an external patch cord for connection to MMF cable. CAUTION: Connecting the downlink of one Hub 1000 SX to the uplink of a second Hub 1000 SX degrades the performance of the second hub. CAUTION: Connecting a Gigabit Ethernet switch downlink to a Hub 1000 SX downlink degrades the performance on the link to the switch. -
Page 30: Aggregating Servers
HAPTER AKING ONNECTIONS Aggregating You can use the Hub 1000 SX downlinks to aggregate servers into server Servers farms. First, install 3Com 3C985-SX Gigabit EtherLink each server. Then, connect up to eight servers through the downlinks. The hub’s optional gigabit interface connector (GBIC) uplink can connect to a 3Com SuperStack II Switch 9300 Gigabit Ethernet switch, thereby connecting to the network backbone. -
Page 31: Aggregating Switches
Figure 3-2 Power Workgroup Connection Aggregating You can use the Hub 1000 SX downlinks to aggregate 10/100 Mbps Switches switches such as the 3Com SuperStack II Switch 1000, Switch 3000, or Switch 3900. The Switch 1000 and Switch 3000 units must be equipped with Gigabit Ethernet uplink devices (SuperStack II Switch Gigabit Ethernet SX Module, part number 3C16925). -
Page 32: Mixing Connections
62.5/125 fiber-optic cable Maximum distance: 260 m SuperStack II Switch 3000 ® with 3C16925 uplink device Multiple 10/100 Mbps clients SuperStack II Hub 1000 SX SUPER STACK ® SuperStack II 1000 SX SuperStack II Switch 1000 SUPER STACK ® with 3C16925... -
Page 33: Connecting Through The Uplink
Switch 3900 Figure 3-4 Mixed Connection Connecting The best use of the hub uplink is as a backbone connection to a 3Com Through the Uplink SuperStack II Switch 9300 Gigabit Ethernet switch, as shown earlier in Figure 3-1 through Figure 3-2. Although two Hub 1000 SX units can be connected to each other through their uplinks, as shown in Figure 3-5, such a connection excludes connection to the network backbone. -
Page 34: Troubleshooting
HAPTER AKING ONNECTIONS The Hub 1000 SX itself can be used as the network backbone by connecting the uplink to a server equipped with a 3C985-SX Gigabit EtherLink Server NIC or to a 10/100 Mbps switch equipped with a 3C16925 uplink device (see Figure 3-6). For these backbone connections, reconfigure the uplink for asymmetric flow control, as described in... -
Page 35: Using The Console Port
SING THE The Hub 1000 SX is ready to use and requires no configuration. However, on rare occasions you may need to confirm a POST failure, change a port’s configuration, or update the firmware image to install a bug fix or a standards update. -
Page 36: Connecting The Console Port
(See Figure A-1.) 2 Turn on the PC. 3 Start the terminal-emulation program. 4 Configure the program with the same settings as the Hub 1000 SX console interface port: 5 Press Enter. The PC screen displays the CLI header and the password prompt:... -
Page 37: With Power Disconnected
Hub 1000 SX rear panel. 2 Turn on the PC. 3 Start the terminal-emulation program. 4 Configure the program with the same settings as the Hub 1000 SX console interface port: 9600 baud 8 data bits... -
Page 38: Logging On
Asterisks (*) instead of plain text appear at the prompt while you are typing the password. The Hub 1000 SX Configuration menu appears. Enter choice -> To select an option from the Configuration menu, enter the option number at the prompt. -
Page 39: Changing The Password
Old password: ***** New password: ******* Re-enter new password: ******* Password changed. The following sections show examples of how to use the Hub 1000 SX Configuration menu. Configuring Table A-1 summarizes the situations that require you to configure port Port Settings settings through the Port Configuration menu. - Page 40 A: U PPENDIX SING THE ONSOLE To display the Port Configuration menu: 1 At the Configuration menu prompt, enter: 2 At the next prompt, enter the numbers of the ports that you want to configure. You can specify a single port number, multiple port numbers separated by commas or spaces (for example: 5, 6 7), or a range of port numbers separated with a hyphen (for example: 5-7).
-
Page 41: Disabling Ports
Save the settings. Select this option if you want settings to persist after a hub reset. Exit to the Hub 1000 SX Configuration menu without applying or saving settings. Apply the settings and exit to the Hub 1000 SX Configuration menu. -
Page 42: Disabling Auto-Negotiation
flow control can connect successfully only with a port that is set for forced link and incoming flow control. When you disable auto-negotiation on a Hub 1000 SX port, you also need to set forced link on the connected device. On some devices, this setting is called forced configuration or link negotiation. - Page 43 *************************************************** Hub 1000 Configuration Menu *************************************************** Configure port settings Display hub status Update firmware image Change password Logout Enter choice -> 1 Enter port number(s), from 1 to 9: 1 **** Port Configuration Menu Enable port Disable port Enable Auto-Negotiation Disable Auto-Negotiation (Force link) Show port settings Use factory default settings...
-
Page 44: Configuring The Uplink For Asymmetric Flow Control
Uplink for flow control. You must configure the uplink for asymmetric flow control Asymmetric to connect it to a server or 10/100 Mbps switch. The server or switch Flow Control must have the appropriate NIC or uplink device, support flow control, and be configured to receive pause frames. - Page 45 **** Port Configuration Menu Enable port Disable port Enable Auto-Negotiation Disable Auto-Negotiation (Force link) Show port settings Use factory default settings Save new port settings Exit without change to settings Apply changes and exit Selected ports: 9 Enter choice -> 4 Enable Outgoing Flowcontrol (Y/N)? y Enable Incoming Flowcontrol (Y/N)? n ****...
-
Page 46: Displaying Hub Status
A-12 A: U PPENDIX SING THE ONSOLE Displaying Hub status includes a matrix of information about the hub ports. In this Hub Status matrix, Y indicates yes and n indicates no. (See Table A-3.) Table A-3 Hub Status Information Category Port is enabled Link state is up Auto-negotiate link... - Page 47 Hub status also includes POST and fan status, bandwidth utilization, hardware and firmware version, and MAC address. The sample hub status display that follows is the result of the changes made in the previous section. To view the hub status, enter: When you have finished viewing the hub status, press Enter to continue the CLI session.
-
Page 48: Restoring The Factory Default Settings
A-14 A: U PPENDIX SING THE ONSOLE Restoring the To restore port settings to factory defaults: Factory Default 1 At the Configuration menu prompt, enter: Settings 2 Enter the numbers of the ports to be restored to factory defaults. 3 At the Port Configuration menu prompt, enter: 4 Apply the changes. -
Page 49: Updating The Firmware Image
3Com World Wide Web site: http://www.3com.com/ Checking the To verify that the firmware version on the 3Com World Wide Web site Firmware Version is more recent than the version installed on the hub, display the hub status. At the Hub 1000 SX Configuration menu prompt, enter: Enter choice ->... -
Page 50: Transferring The Firmware Image File
Firmware Image File the following file transfer protocols: Xmodem, Xmodem-1K, or Xmodem-CRC. To transfer the firmware image file: 1 Obtain the file that contains the firmware image from the 3Com World Wide Web site: http://www.3com.com/ 2 Copy the file to the PC. -
Page 51: Logging Off
Troubleshooting If a firmware update error occurs, the UNIT STATUS LED flashes amber/green. Press the Reset button on the Hub 1000 SX rear panel and repeat the procedure for updating the firmware. If the UNIT STATUS LED continues to flash amber/green, return the unit to the supplier. - Page 52 Make sure that the hub is in file transfer mode (you selected option 3 in the Hub 1000 SX Configuration menu). Make sure that you are using the correct protocol in the terminal-emulation program.
-
Page 53: Specifications
PECIFICATIONS This appendix lists the specifications for the SuperStack II Hub 1000 SX. Physical Dimensions Height: Width: Depth: Weight: Environmental Operating Ranges Operating temperature: 0˚ to 50 ˚C (32˚ to 122 ˚F) Storage temperature: Operating humidity: Storage humidity: Electrostatic discharge:... -
Page 55: C Technical Support
For the very latest, we recommend that you access 3Com Corporation’s World Wide Web site. Online Technical 3Com offers worldwide product support 24 hours a day, 7 days a week, Services through the following online systems: World Wide Web Site Access the latest networking information on 3Com Corporation’s... -
Page 56: Access By Analog Modem
3Com Corporation’s interactive fax service, 3ComFacts, provides data Automated sheets, technical articles, diagrams, and troubleshooting instructions on Fax Service 3Com products 24 hours a day, 7 days a week. Call 3ComFacts using your Touch-Tone telephone using one of these international access numbers: Country U.K. -
Page 57: 3Comforum On Compuserve Online Service
Italy 3ComForum on 3ComForum contains patches, software, drivers, and technical articles CompuServe about all 3Com products, as well as a messaging section for peer Online Service support. To use 3ComForum, you need a CompuServe account. To use 3ComForum: 1 Log on to your CompuServe account. -
Page 58: Support From 3Com
Support from 3Com If you are unable to receive support from your network supplier, technical support contracts are available from 3Com. Contact your local 3Com sales office to find your authorized service provider using one of these numbers: Regional Sales Office... -
Page 59: Returning Products For Repair
Returning Products Before you send a product directly to 3Com for repair, you must first for Repair obtain a Return Materials Authorization (RMA) number. Products sent to 3Com without RMA numbers will be returned to the sender unopened, at the sender’s expense. -
Page 61: Glossary
The IEEE 802.3 physical layer specification for a 1000 Mbps Ethernet network over short laser wavelength (850 nm) MMF or SMF cable. Advanced RPS 3Com SuperStack II Advanced Redundant Power System. asymmetric A relationship between linked network devices in which only one of the flow control... - Page 62 LOSSARY bidirectional See symmetric flow control. flow control CSMA/CD Carrier Sense Multiple Access/Collision Detection. Channel access method used by Ethernet and IEEE 802.3 in which devices transmit only after finding the data channel clear for some period. When two devices transmit simultaneously, a collision occurs and the colliding devices delay their retransmissions for a random length of time.
- Page 63 IEEE Institute of Electrical and Electronics Engineers. Committees that develop and propose computer standards, such as the 802 protocols, which define the physical and data link protocols of communication networks. Members represent an international cross section of users, vendors, and engineering professionals. incoming The ability of a device to receive pause frames.
- Page 64 Shielded twisted-pair. Shielded four-conductor electrical cable that offers high-speed transmission for long distances. SuperStack 3Com system of stackable hubs, servers, switches, routers, SDLC converters, and power supplies. SuperStack systems can support a range of LAN environments, including Ethernet, token ring, FDDI, SNA, and ATM.
-
Page 65: Displaying Hub Status A
% BW usage meter Numbers 1000BASE-CX 1000BASE-LX 1000BASE-SX 1000BASE-X cables and connectors 3C16925 Gigabit Ethernet SX uplink module 3C985-SX Gigabit EtherLink Server NIC 3Com Bulletin Board Service (3ComBBS) 3Com sales offices 3Com URL 3ComFacts 3ComForum power 2-1, 2-3 power cord... - Page 66 NDEX environmental operating ranges factory defaults, restoring port configuration fax service (3ComFacts) A-15 firmware image, updating 1-2, A-10 flow control flow control, auto-negotiation forced link 1-3, A-8 frames aging pause front panel full redundancy for Advanced RPS 2-10 full resilience full-duplex operation fuse GBIC (gigabit interface connector) modules...
- Page 67 Advanced RPS A-13 status, hub SuperStack II Advanced Redundant Power System (RPS) Advanced RPS Power Module Hub 1000 SX. See hub Switch 1000 Switch 3000 Switch 3900 Switch 9300 Uninterruptible Power System (UPS) switches, aggregating symmetric flow control...
- Page 69 +5 Limited Warranty The duration of the warranty for the SuperStack II Hub 1000 SX is five (5) years, with the exception of the product’s fans and power supplies, which are warranted for the first year only. Advance hardware replacement will be provided for one (1) year from your date of purchase, in accordance with 3Com’s standard terms and conditions.
- Page 70 LASS ERIFICATION TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE...
Need help?
Do you have a question about the Hub 1000 SX and is the answer not in the manual?
Questions and answers