Cisco LightStream 2020 User manual

CHAPTER
Hardware Installation 2-1
2
Hardware Installation
This chapter provides procedures for installing a LightStream 2020 multiservice ATM switch
(LS2020 switch) in a networking environment. Installing an LS2020 switch involves several tasks in
two major categories:
1Installing the LS2020 switch hardware
Separate sections in this chapter are devoted to the following topics:
—“Unpacking and Inspecting the LS2020 Switch Hardware”
—“Installing an LS2020 Switch in Rack”
—“Wiring a DC-Powered System”
—“Installing Fantails”
—“Attaching Data Cables”
—“Closing the Chassis”
—“Applying System Power”
2Performing basic configuration procedures
The basic configuration tasks for the LS2020 switch are accomplished through configuration
scripts provided in this chapter.
Note Refer to the LightStream 2020 Release Notes for important, release-specific information that
may not appear elsewhere in the LS2020 documentation set.
Unpacking and Inspecting the LS2020 Switch Hardware
When unpacking the LightStream 2020 switch, you should inspect the shipping container contents
to ensure the shipment is complete as well as check for damage that may have occurred during
shipment.
Step 1 Check the shipping container before removing the LS2020 switch hardware from the
loading dock and inspect it for any signs of in-transit damage.
Step 2 Transport the container to the systems area where the LS2020 switch is to be installed.
Step 3 Cut the packing straps and lift the cardboard box off the LS2020 chassis. Remove the
packing material and bill of materials.
Step 4 Check the bill of materials against the shipment received.

2-2 LightStream 2020 Installation Guide
Installing an LS2020 Switch in Rack
Step 5 Inspect all external surfaces of the chassis for signs of damage. Pay special attention to
areas of the chassis corresponding to visible damage to the shipping container.
Step 6 Document any damage noted during the inspection.
Step 7 Contact your LS2020 vendor if your LS2020 switch has been damaged during shipment.
Installing an LS2020 Switch in Rack
This section explains how to mount an LS2020 chassis in an equipment rack.
Note For physical stability, when an LS2020 chassis is installed in a rack, the equipment
configuration should comply with UL Standard 1950, Par. 4.1.1, and IEC 950, 4.1.1.
Cooling Air and Hardware Placement
An LS2020 chassis takes in cooling air at the bottom of the front panel and exhausts it at the top rear
and right side of the chassis. (The air vents on the right side of the chassis can safely be covered by
the rack side panels, but they should not otherwise be blocked.) To minimize the potential for
thermal problems, position the LS2020 chassis so that
•The air intake panel is not located near the exhaust of other equipment.
•The exhaust is not located near the air intake of other equipment.
Required Tools Ensure that you have the following items on hand before you begin installing the LS2020 switch:
•A number 2 Phillips screwdriver for mounting the chassis.
•A 5/16-inch slotted-tip screwdriver for removing blowers, power supplies, and boards from the
chassis.
•An ESD wrist strap for grounding yourself to the chassis.
•Antistatic shielding bags or antistatic mats for protecting components removed from the chassis.
•Appropriate material-handling equipment for lifting the LS2020 switch into the rack.
•For AC-powered systems: an LS2020 Country Power Kit, which includes a power cord and
mounting hardware for the chassis.
•For DC-powered systems: a DC Mounting Kit, which contains mounting hardware for the
chassis, plus equipment needed by the electrician for wiring the system (see the subsection
entitled “Preparation for Wiring” later in this chapter).
Rack Installation Procedure
To mount the LS2020 switch in an equipment rack, perform the following steps:
Step 1 Ensure that the power cord to the system is disconnected before you begin with the
installation.
Step 2 Put on the ESD wrist strap and connect it to a grounding jack on the front or the rear panel
of the LS2020 chassis.

Hardware Installation 2-3
Installing an LS2020 Switch in Rack
Step 3 Remove the following chassis components to reduce the weight of the system during
installation.
•Blowers (top front and top rear)
•Power supplies (right rear)
These components are located behind removable covers. Figure 2-1 shows the front view
of the LS2020 chassis, while Figure 2-2 shows the rear view of the chassis.
If your system is fully configured with function cards, you may also remove some or all of
these cards to further reduce the weight of the chassis. (Refer to the LightStream 2020
Hardware Reference and Troubleshooting Guide for component removal instructions.) Put
all removed electronic components in antistatic shielding bags or place them on antistatic
mats.
Note Do not remove disk assemblies as a means of reducing chassis weight.
Step 4 Determine the desired mounting position in the rack for the LS2020 switch. Attach the clip
nuts from the country kit or the rack mounting kit to the appropriate positions on the rack
rails.
See Figure 2-1 for the location of mounting screw slots. (If your rack has metric-threaded
or non-standard rails, you may need to provide your own mounting hardware.)
Step 5 Lift the LS2020 chassis into the desired mounting position in the rack.
Warning An LS2020 chassis is heavy, particularly if it is completely configured with function
cards. (The weight of the system ranges from 94 to 147 pounds, depending on the system
configuration.) Do not risk personal injury or equipment damage by attempting to transport or lift
the system without assistance.
Caution Do not use the disk assembly handles to lift the chassis. These handles, shown in
Figure 2-1, are not designed for weight-bearing loads and may break off if used to lift the chassis.
Step 6 Using the mounting screws and washers included in your country kit or rack mounting kit,
secure the flanges on the front of the LS2020 chassis to the rack.
Step 7 Replace any items that you removed from the chassis in Step 3 above (blowers, power
supplies, function cards, and covers) before installing the chassis into the rack.

2-4 LightStream 2020 Installation Guide
Installing an LS2020 Switch in Rack
Figure 2-1 Front View of LightStream 2020 Chassis
H4812
™
LightStream 2020
ESD jack
Line cardsSwitch
cards
Line cardsNP card
Disk assembly
Blower (behind cover)
Disk assembly
Mounting flanges
Disk assembly
handle unsafe
for lifting!
Disk assembly
handle unsafe
for lifting!
Slots for mounting screws
(12 places)

Hardware Installation 2-5
Installing an LS2020 Switch in Rack
Figure 2-2 Rear View of AC-powered LightStream 2020 Chassis
H4811
RX
TX
FA
RO
4
RX
TX
FA
RO
5
RX
TX
FA
RO
6
RX
TX 7
T1
CEMAC FEAC
ESD jack
AC power tray
Power switch/
circuit breaker
Power inlet
NP access
card
I/O access
cards
Console/
modem
assemblies
I/O access
cards
Blower (behind
cover) AC power tray
67
45
23
01
RX4
TX4
RX5
TX5
RX6
TX6
RX7
TX7
RX0
TX0
RX1
TX1
RX2
TX2
RX3
TX3
WAVELENGTH: 850nm MAXIMUM OUTPUT: 63.1 µW CERTIFIED TO: EN 60 825:1994
I
NVISIBLE LASER RADIATION IS EMITTED FROM
THIS APERTURE.DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS. CLASS 3A LASER PRODUCT.
Warnhinweisefur den Gebrauch des Lasers sind im Installationshandbuch enthalten. Consulterle manuel d'installation au sujet de l'avertissement sur le laser.
Consulteel manual de instalacion para informarse sobre las advertencias relativas al laser.
E3AC
FA
RO
RX
TX O
FA
RO
RX
TX 1
FA
RO
RX
TX 2
RX
TX 3
FA
RO
FA
RO
T3AC
FA
RO
RX
TX O
FA
RO
RX
TX 1
FA
RO
RX
TX 2
RX
TX 3
FA
RO

2-6 LightStream 2020 Installation Guide
Wiring a DC-Powered System
Wiring a DC-Powered System
The procedure in this section explains how to wire a DC-powered LS2020 switch to a DC power
source. This task should be performed only by qualified service personnel or a licensed electrician.
This section applies only to systems with the DC power option. If you have a standard AC-powered
system, skip to the section “Installing Fantails.”
For general information on DC-powered LS2020 systems, see the LightStream 2020 Hardware
Reference and Troubleshooting Guide. For power specifications, see the LightStream 2020 Site
Planning and Cabling Guide.
Preparation for Wiring
Note the following in preparation for wiring a DC-powered LS2020 switch:
•The system power connection on the DC power tray is provided by a 3-position terminal block,
as shown in Figure 2-3. The –48, –48RTN, and CHS GND connections providing –48VDC
power to the system require a minimum of number 10AWG wire for the 24A-rated load. The
terminal block is rated to accept up to number 8AWG solid wire. The use of ferrules to terminate
these wires is recommended.
•The alarm circuit connection to the DC power tray is provided by a smaller 3-position terminal
block, also shown in Figure 2-3. The COM, NO, and NC connections providing the circuit
breaker alarm indication should be wired with number 22AWG or larger wire. The use of number
6 spade or ring lug terminals for these connections is recommended.
•Obtain a slot-tip screwdriver for securing the system power terminals and a Phillips screwdriver
for securing the alarm circuit terminals.

Hardware Installation 2-7
Wiring a DC-Powered System
Figure 2-3 Connections to DC-powered Chassis
Wiring Procedure
Warning The wiring task should be performed only by a licensed electrician or qualified service
personnel. Untrained personnel may be exposed to hazardous DC voltages.
To wire a DC-powered LS2020 switch to a DC power source, perform the following steps:
Step 1 Ensure that the circuit breaker/power switch on each DC power tray is OFF.
Step 2 Ensure that power to the circuit to which you will connect the LS2020 switch is OFF.
Step 3 Connect the three system power wires to the LS2020 terminal block, using the slot-tipped
screwdriver to secure the terminals. Do not remove the terminal covers at the base of the
terminal block.
Step 4 To connect the alarm circuit, remove the plastic terminal block cover (see Figure 2-3) and
set it aside for the time being.
Step 5 Connect the alarm wires to the LS2020 terminal block, using the Phillips screwdriver to
secure the terminals.
Step 6 Replace the terminal block cover.
Terminal block
for alarm circuit
Terminal block
for system power
Removable cover
Circuit breaker/
power switch
H3690

2-8 LightStream 2020 Installation Guide
Installing Fantails
Step 7 Repeat the procedure above if the LS2020 switch contains a second DC power tray.
Step 8 Observe the green power LED on the front of the power tray when power is applied. If the
LED is not lit, check for incorrectly connected wires or problems in the DC power source.
Installing Fantails
This section explains how to mount and connect fantails in your LS2020 switch (see Figure 2-4).
Fantails provide connectors for data cables on low-speed (V.35, X.21 and EIA/TIA-449) lines and
T3 lines that are attached to cell line card/T3 access cards in an LS2020 switch.
If your system has no low-speed or cell line card/T3 modules, skip to the section “Attaching Data
Cables.”
Required Tools and Equipment
Obtain the following equipment and tools in preparation for installing fantails:
•Fantails in the desired quantity (provided by Cisco Systems).
•Required fantail cables (provided by Cisco Systems).
•Fantail mounting screws, clip nuts, and washers (provided by Cisco Systems). If your equipment
rack has metric-threaded rails, you must provide appropriate mounting screws.
•A 5/16-inch slotted-tip screwdriver.
•Adhesive labels for making appropriate notations on each fantail.
•A grounding wrist strap for ESD protection during fantail installation.
Note If you are installing X.21 fantails and you plan to configure the ports as DTEs, you must
obtain and install a 15-pin male-to-male gender converter on each port in order to change the female
connector to a male connector. Note, however, that the gender converters are not required for X.21
ports configured as DCEs.

Hardware Installation 2-9
Installing Fantails
Figure 2-4 Fantail Cable Connections
Fantail Installation Procedure
To install fantails in your LS2020 switch, perform the following steps:
Note Before installing fantails, check the interface jumpers on each low-speed access card. These
jumpers must be set to the interface displayed on the fantail(s) for that card. For instructions on
setting interface jumpers, see the LightStream 2020 Hardware Reference & Troubleshooting Guide.
Step 1 Select a position on the rack to mount the fantail. Attach the four clip nuts provided with
the fantail to the appropriate holes in the rails.
Step 2 Put on the ESD wrist strap and connect it to the ESD jack on the rear of the LS2020 chassis.
Front view
Rear view 100-pin high-density
connectors support
four ports each
Low-speed
access card
Front view
Rear view
V.35 fantail
RS-449 fantail
H3691

2-10 LightStream 2020 Installation Guide
Connecting Cables
Step 3 Attach the fantail cable(s) to the back of the fantail and the corresponding access card in
the chassis. (Performing this task now is recommended, rather than installing the fantail
first and having to reach behind it to attach the cable(s) to a connector that you cannot
observe directly.) Note that the cable is reversible; that is, either end of the cable can be
connected to the fantail. Exercise care to avoid suspending the weight of the fantail on the
cable.
Step 4 Attach the fantail to the rails with the mounting screws and washers provided, using a
slot-tip screwdriver.
Step 5 Label the fantail with the slot number or the name of the interface module to which the
fantail is connected.
Step 6 Repeat Step 1 and Steps 3 through 5 to install additional fantails in your LS2020 switch.
Note If you are mounting an X.21 fantail, set the DTE/DCE switches for each port to the desired
mode.(SeetheLightStream 2020 Hardware ReferenceandTroubleshooting Guide for more detailed
instructions on configuring X.21 ports as DTEs or DCEs.) If you select a DCE interface, note that
you must install a gender converter on each DTE port in order to change the female connector to a
male connector.
Connecting Cables
To connect cables to your LS2020 switch, perform the following steps:
Step 1 If you have any FDDI cards in your LS2020 switch, install connector keys provided by the
cable vendor onto your FDDI cables. The keys make it impossible to attach a cable to the
wrong kind of connector on the FDDI card.
Step 2 If you have any OC-3c or FDDI cards in your LS2020 switch, remove and save the
protective covers on the ports that will be used. Leave any unused ports covered.
Step 3 If you have any E1 CEMAC cards (circuit emulation access cards) in your LS2020 switch,
check the user-settable jumper settings on the card(s). These jumpers allow you to select
termination impedance and grounding on the receive line, as well as the pulse amplitude
and grounding on the transmit line.
As default values, the termination impedance and pulse amplitude jumpers are set to 120
ohms, and the transmit and receive lines are not grounded. Use these default settings if you
plan to use the E1 CEMAC card without a fantail. However, if you do plan to use a fantail
(which provides 75-ohm interfaces), you must use 75-ohm settings for termination
impedance and pulse amplitude and set grounding to on.
For more detailed information about changing the E1 CEMAC card jumper settings,
consult the LightStream 2020 Hardware Reference and Troubleshooting Guide.
Step 4 Connect any available external data cables. (Refer to the LightStream 2020 Site Planning
and Cabling Guide for details about data cables and connectors.) If you have Ethernet cards
inyourLS2020switch,notethateachcardsupportsonlyeightports(0through7), although
10 physical connectors are available on the access card. Note also that you can use only one
of the 10Base-T or AUI connections on ports 0 and 7.