Table of Contents

Safety Recommendations

Safety with Electricity
Preventing Electrostatic Discharge Damage

Site Requirements

Plant Wiring

Interference Considerations
Distance Limitations

Site Environment
Preventive Site Configuration

General Precautions

Preparing Network Connections

Additional and Optional Connection Equipment
Ethernet Connection Equipment
Console Port Signals
Auxiliary Port Signals

EIA/TIA-232 Connections

Console Port Connection Equipment

Connecting the Console Terminal

Installation Checklist
Unpacking the ASP

Checking the Contents

Repacking the System

Preparing for Installation

This chapter describes the equipment and site requirements for installing the LightStream  1010 ATM switch processor (ASP). It includes the requirements for power and cabling that must be in place at the installation site, and describes additional equipment you need to complete the installation and establish environmental conditions your site must meet to maintain normal operation. Instructions for unpacking the system and additional equipment are provided in the document Unpacking Instructions, which is attached to the outside of the shipping container.

This chapter includes information about the following preinstallation requirements:

• Safety Recommendations

  • Safety with Electricity

  • Preventing Electrostatic Discharge Damage

• Site Requirements

  • Plant Wiring (Interference Considerations and Distance Limitations)

  • Site Environment

  • Preventive Site Configuration

• Preparing Network Connections

  • Additional and Optional Connection Equipment

  • Ethernet Connection Equipment

  • EIA/TIA-232 Connections

  • Console Port Connection Equipment

• Installation Checklist

• Unpacking the ASP

  • Checking the Contents

  • Repacking the System

Warning Read the installation instructions before you connect the system to its power source. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in either the LightStream 1010 ATM Switch Hardware Installation Guide or the Catalyst 5500 Installation Guide.

Warning Only trained and qualified personnel should be allowed to install or replace this equipment. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in either the LightStream 1010 ATM Switch Hardware Installation Guide or the Catalyst 5500 Installation Guide.

Safety Recommendations

The following guidelines help ensure your safety and protect the equipment. This list is not inclusive of all potentially hazardous situations you might be exposed to as you install the switch, so be alert.

• Never try to lift the chassis by yourself; two people are required to lift the switch.

• Always turn all power supplies off (the position marker zero) and unplug all power cords before removing the chassis front panel.

• Always unplug all power cords before installing or removing a chassis.

• Keep the chassis area clear and free of dust during and after installation.

• Keep tools and chassis components away from walk areas.

• Never wear loose clothing, jewelry (including rings and chains), or other items that could get caught in the chassis. Fasten your tie or scarf and sleeves.

Warning Metal objects heat up when connected to power and ground, and can cause serious burns. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in either the LightStream 1010 ATM Switch Hardware Installation Guide or the Catalyst 5500 Installation Guide.

Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in either the LightStream 1010 ATM Switch Hardware Installation Guide or the Catalyst 5500 Installation Guide.

Warning This unit might have more than one power cord. To reduce the risk of electric shock, disconnect the two power-supply cords before servicing the unit. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in either the LightStream 1010 ATM Switch Hardware Installation Guide or the Catalyst 5500 Installation Guide.

Safety with Electricity

The Carrier Modules (CMs), port adapter modules (PAMs), and redundant (second) power supplies are designed to be removed and replaced while the system is operating without presenting an electrical hazard or damage to the system. Before removing a redundant power supply, ensure that the first supply is powered on and the power supply being removed is powered off. However, you must shut down the system before removing or replacing the ASP. Never install equipment that appears to be damaged.

• Make sure that before beginning any procedures requiring access to the chassis interior you locate the emergency power-off switch for the room in which you are working.

• Disconnect all power and external cables before installing or removing a chassis.

• Make sure you do not work alone when potentially hazardous conditions exist.

• Never assume that power has been disconnected from a circuit; always check.

• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

• Examine your work area carefully for possible hazards such as moist floors, ungrounded power extension cables, and missing safety grounds.

In addition, use the following guidelines when working with any equipment that is disconnected from a power source but still connected to telephone wiring or other network cabling.

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in either the LightStream 1010 ATM Switch Hardware Installation Guide or the Catalyst 5500 Installation Guide.

• Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.

• Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.

• Always use caution when installing or modifying telephone lines.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are improperly handled, can result in complete or intermittent failures. The ASP and PAMs each consist of a printed circuit card that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps to protect the cards from ESD, use a preventive antistatic strap whenever you handle the ASP or PAMs. Handle the carriers by the carrier edges only; never touch the cards or connector pins.

Caution Always tighten the captive installation screws on the ASP and PAMs when you are installing them. These screws prevent accidental removal of the ASP, CMs, and PAMs, provide proper grounding for the system, and help to ensure that the bus connectors are properly seated in the backplane.

Following are guidelines for preventing ESD damage:

• Always use an ESD-preventive wrist or ankle strap ensuring that it makes good skin contact.

• When removing any module, connect the equipment end of the strap to one of the captive installation screws on an installed PAM or power supply. (See Figure 2-1.)

Figure 2-1: Placement of Electrostatic Discharge Wrist Strap

• Handle carriers by the faceplates and carrier edges only; avoid touching the card or any connector pins.

• When removing a module, place the removed module component side up on an antistatic surface or in a static shielding bag. If you are returning the module to the factory, immediately place it in a static shielding bag.

• Avoid contact between the modules and clothing. The wrist strap protects only the card from ESD voltages on the body; ESD voltages on clothing can still cause damage.

Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms (Mohms).

Site Requirements

This section discusses the site environment requirements for the switch chassis. See the LightStream 1010 ATM Switch Hardware Installation Guide for detailed site configuration information when installing the switch chassis.

Plant Wiring

The following guidelines are for setting up the plant wiring and cabling at your site. When planning the location of the new system, consider the distance limitations for signaling, EMI, and connector compatibility.

Interference Considerations

When wires are run for any significant distance in an electromagnetic field, interference can occur between the field and the signals on the wires. This fact has two implications for the construction of plant wiring:

• Bad plant wiring can result in radio frequency interference (RFI).

• Strong EMI, especially when caused by lightning or radio transmitters, can destroy the signal drivers and receivers in the switch, and can even create an electrical hazard by conducting power surges through lines and into equipment. (Review the safety warnings in the section "Safety with Electricity" earlier in this chapter.)

If wires exceed recommended distances, or if wires pass between buildings, give special consideration to the effect of a lightning strike in your vicinity. The electromagnetic pulse (EMP) caused by lightning or other high-energy phenomena can couple enough energy into unshielded conductors to destroy electronic devices. If this has been a problem in the past, consult experts in electrical surge suppression and shielding.

Most data centers cannot resolve the infrequent but potentially catastrophic problems just described without pulse meters and other special equipment. These problems can require a lot of time to identify and resolve, so make sure you provide a properly grounded and shielded environment, paying attention to electrical surge suppression.

Distance Limitations

The length of the networks and the distances between connections depend on the type of signal, the signal speed, and the transmission media (the type of cabling used to transmit the signals). For example, fiber-optic cable has more channel capacity than twisted-pair cabling.

ATM Connections

Serial Connections

Serial signals can travel a limited distance at any given bit rate; generally, the slower the baud rate, the greater the distance. Table 2-1 shows the standard relationship between the baud rate and distance for EIA/TIA-232 signals.

Site Environment

See the LightStream 1010 ATM Switch Hardware Installation Guide for detailed site configuration information.

Preventive Site Configuration

Planning a proper location for the switch and the layout of your equipment rack or wiring closet is essential for successful system operation. Equipment placed too close together or inadequately ventilated can cause system overtemperature conditions. In addition, chassis panels made inaccessible by poor equipment placement can make system maintenance difficult. Following precautions can help avoid problems during installation and operation.

General Precautions

Follow these general precautions when planning your equipment locations and connections:

• The environmental monitor continuously checks the interior chassis environment and provides warnings for high temperature and reports any occurrences. If warning messages are displayed, take immediate action to identify the cause and correct the problem. Use the show environment command regularly to check the internal system status. (Refer to the LightStream 1010 ATM Switch Software Configuration Guide and the LightStream 1010 ATM Switch Command Reference publications for information regarding this command.)

• Keep the front and sides of the chassis free from obstructions and away from the exhaust air of other equipment. Remember that electrical equipment generates heat, and ambient room temperature alone might not be adequate to cool equipment to acceptable operating temperatures.

• Follow ESD prevention procedures to avoid damage to equipment. Damage from static discharge can cause immediate or intermittent equipment failure.

• Ensure that the chassis panels, PAMs, and any PAM slot fillers are in place and secure. The fan assembly pulls cooling air across the PAMs. A loose panel can redirect the airflow away from active PAMs.

Preparing Network Connections

When preparing your site for network connections to the switch, consider the following factors related to each type of interface:

• Type of cabling required for each type (fiber-optic, coaxial, or twisted-pair cabling)

• Distance limitations for each signal type

• Specific cables you need to connect each interface

• Any additional interface equipment you need, such as transceivers, modems, channel service units (CSUs), or data service units (DSUs). Before installing the switch, have all additional external equipment and cables on hand. For ordering information, contact a customer service representative. If you intend to build your own cables, refer to the cable pinouts in the appendix "ASP Cabling Specifications."

Additional and Optional Connection Equipment

To install and configure the switch, you need a terminal with an EIA/TIA-232 data terminal equipment (DTE) port and an EIA/TIA-232 data communications equipment (DCE) console cable with DB-25 plugs at one end. You can detach the terminal (and cable) after the installation and configuration procedures are complete.

Ethernet Connection Equipment

You need an Ethernet cable with RJ-45 male connectors (Figure 2-2) between the Ethernet port and the Ethernet network. Table B-1 in the appendix "ASP Cabling Specifications" lists the signals for the Ethernet RJ-45 connector.

Figure 2-2: Ethernet RJ-45 Interface Cable Connectors

Console Port Signals

The console port on the ASP is a female, EIA/TIA-232, DCE DB-25 receptacle. Both data set ready (DSR) and data carrier detect (DCD) are active when the system is running. (See Figure 2-3.) The Ready to Send (RTS) signal tracks the state of the Clear to Send (CTS) input. The console port does not support modem control or hardware flow control. The console port requires a straight-through EIA/TIA-232 cable. Table B-2 in the appendix "ASP Cabling Specifications" lists the signals used on this port.

Auxiliary Port Signals

The auxiliary port on the ASP is a male, EIA/TIA-232 DTE, DB-25 plug. You can attach a channel service unit/data service unit (CSU/DSU) or other equipment in order to access the switch from the network. The asynchronous auxiliary port supports hardware flow control and modem control. (See Figure 2-3.) Table B-3 in the appendix "ASP Cabling Specifications" lists signals used on this port.

Figure 2-3: AUX and Console Connectors

EIA/TIA-232 Connections

EIA/TIA-232 supports unbalanced circuits at signal speeds up to 64  kbps. The ASP console connection is a standard 25-pin D-shell connector (known as a DB-25) that is commonly used for EIA/TIA-232 connections. Figure 2-4 shows the connectors at the local end of the adapter cable. The system console port on the ASP EIA/TIA-232 connection supports only an asynchronous connection.

Figure 2-4: EIA/TIA-232 Adapter Cable Connectors, Network End

Console Port Connection Equipment

The ASP contains an EIA/TIA-232 asynchronous console port (DB-25 receptacle). (Table B-2 in the appendix "ASP Cabling Specifications" lists the signals used on this port.)

When connecting a serial device, consider the cable as an extension of the switch for an external connection; therefore, use null-modem cable to connect the switch to a remote DCE device such as a modem or DSU, and use a straight-through cable to connect the switch to a DTE device such as a terminal or PC.

Connecting the Console Terminal

The system console port on the ASP is a DCE DB-25 receptacle for connecting a data terminal. You use the console port connection to configure and communicate with your system. The port is located on the ASP faceplate and is labeled CONSOLE, as shown in Figure 2-3.

Before connecting to the console port, check your terminal's documentation to determine the baud rate. The baud rate of the terminal must match the default baud rate (9600 baud) of the port you use. Set up the terminal as follows:

• 9600 baud

• 8 data bits

• No parity

• 1 stop bit

Use the proper null-modem or straight-through cable to connect a terminal or modem to the console port on the ASP; then follow the steps in the chapter "Configuring the LightStream 1010 ATM Switch Processor."

Installation Checklist

Refer to the section "Switch Installation Checklist" in the appendix "Configuration Worksheets" in the "LightStream 1010 ATM Switch Software Configuration Guide" to assist you with installation and to provide a historical record of what was done, by whom, and when. Make a copy of this checklist and indicate when each procedure or verification is completed. When the checklist is complete, place it in your Site Log along with the other records for your new switch.

Unpacking the ASP

Unpacking instructions are provided in the document Unpacking Instructions, which is attached to the outside of the shipping container. If you already read the unpacking instructions and followed the procedures to unpack your LightStream 1010 ATM switch, proceed to the next section "Checking the Contents" to verify that you received all the required components.

Checking the Contents

Perform the following steps to check the contents of your switch component package:

Step 1 Check the contents of the box against the packing slip and verify that you received all listed equipment, including the following:

• Switch hardware and software documentation, if ordered

• Optional equipment that you ordered, such as network interface cables, transceivers, or special connectors

Step 2 Proceed to the chapter "Maintaining the LightStream 1010 ATM Switch Processor" to begin installation.

Repacking the System

If you need to return or move the LightStream 1010 ATM switch, follow these instructions to repack the switch using the original packaging material:

Step 1 Place the ASP in the anti-static bag.

Step 2 Place the antistatic bag with the ASP in the container between the foam pads.

Step 3 Seal the container with shipping tape and return it as described by your customer service representative.

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