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This chapter provides the following information:
Translated versions of the following safety warnings are provided in the "Translated Safety Warnings" appendix.
 | Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. |
| Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. |
| Warning Read the installation instructions before you connect the system to its power source. |
| Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the phase conductors (all current-carrying conductors). |
| Warning To prevent the unit from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 113×F (45×C). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings. |
| Warning The device is designed to work with TN power systems. |
| Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. |
| Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
| Warning Only trained and qualified personnel should be allowed to install or replace this equipment. |
| Warning Care must be given to connecting units to the supply circuit so that wiring is not overloaded. |
| Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: |
| Warning Unplug the power cord before you work on a system that does not have an on/off switch. |
| Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
When determining where to place the FastHub, ensure the following conditions are met:
Each FastHub is shipped with the following items:
Follow these steps to unpack the FastHub:
Step 1 Open the shipping container and carefully remove the contents.
Step 2 Return all packing materials to the shipping container and save it.
Step 3 Ensure that all items listed in the packing list were included in the shipment. Check each item for damage.
This section provides procedures for setting the FastHub on a tabletop, for installing it in a 19- or 24-inch standard or telco rack, and for attaching it to a wall.
To set the FastHub on a desk or table:
Step 1 Place the FastHub on a desk or table close to an AC power receptacle.
Step 2 Locate the adhesive strip with the rubber feet that shipped with the FastHub. Attach the rubber feet to the four round, recessed areas on the bottom corners of the FastHub.
Step 3 Attach the AC power cord to the FastHub. If your configuration has an RPS, see the RPS documentation.
See the "Guidelines for Connecting FastHubs and Other Repeaters" chapter for information on making additional connections to other devices
This section provides the following steps to install the FastHub in 19- and 24-inch standard and telco racks:
Place the FastHub on a level surface, and use two of the supplied Phillips flat-head or truss-head screws to attach a mounting bracket to each side of the FastHub. Secure all four screws tightly, but do not overtighten them.
The bracket orientation and the screws you use depend on whether you are attaching the brackets for 19-inch or 24-inch rack-mounting:
Figure 3-1, Figure 3-2, and Figure 3-3 show how to attach only one bracket to one side of the FastHub. Follow the same steps to attach the second bracket to the opposite side of the FastHub.
After the brackets are attached to the FastHub, use two of the supplied Phillips machine screws to securely attach each bracket to the rack, as shown in Figure 3-4.
If the FastHub is attached to a 19-inch rack, you can attach the cable guide to the left or right rack-mount bracket, using the supplied black screw, as shown in Figure 3-5.
After you have completely installed the FastHub in the rack, attach the power cord to the FastHub. If your configuration has an RPS, see the RPS documentation.
See the "Guidelines for Connecting FastHubs and Other Repeaters" chapter for information on making additional connections to other devices.
This section provides the following steps to attach the FastHub parallel and vertically to a wall:
Place the FastHub on a level surface, and use two of the supplied Phillips flat-head or truss-head screws to attach a mounting bracket to each side of the FastHub. Secure all four screws tightly, but do not overtighten them.
The bracket orientation and the screws you use depend on whether you are attaching the brackets for parallel or vertical wall-mounting:
Figure 3-6 shows how to attach only one bracket to one side of the FastHub. Follow the same steps to attach the second bracket to the opposite side of the FastHub.
For best support of the FastHub and cables, make sure the FastHub is attached securely to a wall stud or to a firmly attached plywood mounting backboard, as shown in Figure 3-7. You must supply your own screws to attach the FastHub to the wall.
After you have attached the FastHub to the wall, attach the power cord to the FastHub. If your configuration has an RPS, see the RPS documentation.
See the "Guidelines for Connecting FastHubs and Other Repeaters" chapter for information on making additional connections to other devices.
This section provides the procedures for connecting devices to the console and 100BaseTX ports on the FastHub and explains how to avoid potential problems with shielded twisted-pair (STP) cabling in Token Ring environments.
To manage the FastHub through the management console, you must use the RJ-45-to-
RJ-45 rollover cable and the appropriate adapter (both supplied with the FastHub) to connect the console port on the FastHub to a terminal or modem.
To connect the console port to a terminal or modem, follow these steps:
Step 1 Configure the baud rate and character format of the terminal or modem to match the following default physical characteristics for the console port:
Although the Match Baud Rate option (autobaud) matches the baud rate when the FastHub is answering an incoming call, the FastHub does not change from its configured rates when dialing out. Also, the FastHub only matches a rate lower than its configured rate. When a call is completed and the line disconnects, the FastHub always returns to its last configured baud rate.
You can change the console port characteristics of the FastHub by using the Console Port Menu (see the "Console Port Menu" section in the "Configuration and Management" chapter). If you are using SNMP, these characteristics can be changed with the RS-232 MIB objects.
Step 2 Insert one end of the supplied rollover cable into the console port
(see Figure 3-8).
Step 3 Attach one of the following supplied adapters to the terminal or modem:
Step 4 Insert the other end of the supplied rollover cable into the adapter.
Step 5 From your terminal, start up the terminal emulation program or Telnet session.
The FastHub Management Console Logon screen (see Figure 4-2) is displayed when the POST completes. For details on using the management console or using an SNMP-compatible network management system, see the "Configuration and Management" chapter. If the FastHub Management Console Logon screen does not display, see the "Troubleshooting" chapter for assistance.
See the "Console Port" section in the "Connectors and Cables" appendix for cable and adapter details. See the "Guidelines for Connecting FastHubs and Other Repeaters" chapter for additional information on making connections to other devices.
You must provide the Category 5 UTP cable(s) to connect each of the 100BaseTX ports on the FastHub to 100BaseTX-compatible devices (see Figure 3-9). Attached devices must have a 100BaseTX-compatible adapter installed.
Ports 1x through 16x have their transmit (TD) and receive (RD) pairs internally crossed. When connecting these ports to another hub, switch, or router (unless you are connecting to the uplink port on another FastHub or 100BaseT hub), ensure that you use a crossover cable.
Port 16, which is to the right of port 16x, is the 100BaseTX uplink port. This uplink port is not internally crossed. When connecting this port to another FastHub 100BaseTX port or to the 100BaseTX port on another hub, switch, or router, ensure that you use a straight-through cable. Remember that the port on the device to which you are connecting must be an X port.
 You will disable both ports if you connect to both the uplink port (port 16) and port 16x. |
See the "100BaseTX Ports" section in the "Connectors and Cables" appendix for more information about cables and connectors. See the "Guidelines for Connecting FastHubs and Other Repeaters" chapter for additional information on making connections to other devices.
Shielded twisted-pair (STP) cable is the most commonly used cable in Token Ring environments. The media interface connectors (MICs) and baluns--used to connect STP and UTP cabling--create a loopback when they are disconnected; the loopback might cause anomalies with the FastHub.
To prevent loopback problems when using STP cabling in a Token Ring network environment, make sure the MICs and baluns are never left unconnected when they are part of a link connected to the FastHub (see Figure 3-10).
The LED of each port on the FastHub indicates the status of the port, as follows:
The status, RPS, and port status LEDs also facilitate troubleshooting during system operation. See the "Troubleshooting" chapter for more information.
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