Cisco Systems LightStream 2020 User Manual

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C H A P T E R 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-PoweredSystem”

“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 theLightStream 2020 Release Notes for important,release-specificinformation 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 ofin-transitdamage.

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.

Hardware Installation 2-1

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-inchslotted-tipscrewdriver 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-handlingequipment for lifting the LS2020 switch into the rack.

For AC-poweredsystems: an LS2020 Country Power Kit, which includes a power cord and mounting hardware for the chassis.

For DC-poweredsystems: 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 isdisconnected 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.

2-2 LightStream 2020 Installation Guide

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 2-1shows the front view of the LS2020 chassis, while Figure2-2shows 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 Donot 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 2-1for the location of mounting screw slots. (If your rack hasmetric-threadedornon-standardrails, 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 Donot use the disk assembly handles to lift the chassis. These handles, shown in Figure2-1,arenot designed forweight-bearingloads 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.

Hardware Installation 2-3

Installing an LS2020 Switch in Rack

Figure 2-1Front View of LightStream 2020 Chassis

Mounting flanges

Blower (behind cover)

LightStream

2020

Disk assembly

 

Disk assembly

 

handle unsafe

 

for lifting!

 

Disk assembly

 

Disk assembly

 

handle unsafe

 

for lifting!

 

 

H4812

ESD jack

NP card

Line cards

Switch

Line cards

 

 

cards

 

Slots for mounting screws (12 places)

2-4 LightStream 2020 Installation Guide

Installing an LS2020 Switch in Rack

Figure 2-2Rear View ofAC-poweredLightStream 2020 Chassis

Blower (behind cover)

T3AC CEMAC

FEAC

E3AC

 

 

0

1

 

 

R

O

2

3

R

O

4

5

F

A

F

A

RX

 

6

7

RX

 

O

 

 

O

 

RX0

 

 

TX

 

 

TX

 

 

 

 

 

R

O

TX0

 

R

O

F

A

 

F

A

 

 

RX

1

RX1

 

RX

1

 

 

 

TX

 

 

 

TX

 

R

O

TX1

 

R

O

F

A

 

 

F

A

RX

2

RX2

 

RX

2

 

 

 

TX

 

 

 

TX

 

R

O

TX2

 

R

O

 

 

F

A

 

 

F

A

RX

3

RX3

 

RX

3

 

 

 

 

TX

 

 

 

TX

 

TX3

 

 

R

O

 

RX4

F

A

 

RX

 

 

 

4

 

 

 

 

TX4

TX

 

 

 

 

 

 

R

O

 

RX5

F

A

 

RX

 

 

 

5

 

 

 

 

TX5

TX

 

 

 

 

 

 

R

O

 

RX6

F

A

 

RX

 

 

 

6

 

 

 

 

TX6

TX

 

 

 

R

O

 

RX7

F

A

 

RX

 

 

 

7

T1

TX7

 

TX

 

AC power tray

ESD jack

AC power tray

Power switch/circuit breaker

Power inlet

H4811

I/O access

Console/

I/O access

NP access

cards

modem

cards

card

 

assemblies

 

 

Hardware Installation 2-5

Wiring a DC-PoweredSystem

Wiring a DC-PoweredSystem

The procedure in this section explains how to wire a DC-poweredLS2020 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-poweredsystem, skip to the section “Installing Fantails.”

For general information on DC-poweredLS2020 systems, see theLightStream 2020 Hardware Reference and Troubleshooting Guide. For power specifications, see theLightStream 2020 Site Planning and Cabling Guide.

Preparation for Wiring

Note the following in preparation for wiring a DC-poweredLS2020 switch:

The system power connection on the DC power tray is provided by a 3-positionterminal block, as shown in Figure2-3.The–48,–48RTN,and CHS GND connections providing–48VDCpower to the system require a minimum of number 10AWG wire for the24A-ratedload. 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-positionterminal block, also shown in Figure2-3.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-tipscrewdriver for securing the system power terminals and a Phillips screwdriver for securing the alarm circuit terminals.

2-6 LightStream 2020 Installation Guide

Wiring a DC-PoweredSystem

Figure 2-3Connections toDC-poweredChassis

Terminal block for alarm circuit

Removable cover

Terminal block for system power

Circuit breaker/ power switch

H3690

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-poweredLS2020 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 theslot-tippedscrewdriver 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 Figure2-3)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.

Hardware Installation 2-7

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 onlow-speed (V.35, X.21 andEIA/TIA-449)lines andT3 lines that are attached to cell line card/T3 access cards in an LS2020 switch.

If your system has no low-speedor 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-threadedrails, you must provide appropriate mounting screws.

A 5/16-inchslotted-tipscrewdriver.

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 a15-pinmale-to-malegender 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.

2-8 LightStream 2020 Installation Guide

Installing Fantails

Figure 2-4Fantail Cable Connections

V.35 fantail

Front view

Rear view

RS-449fantail

Rear view

Front view

Low-speedaccess card

H3691

100-pinhigh-densityconnectors support four ports each

Fantail Installation Procedure

To install fantails in your LS2020 switch, perform the following steps:

Note Before installing fantails, check the interface jumpers on eachlow-speedaccess card. These jumpers must be set to the interface displayed on the fantail(s) for that card. For instructions on setting interface jumpers, see theLightStream 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.

Hardware Installation 2-9

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 aslot-tipscrewdriver.

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. (See theLightStream 2020 Hardware Reference and Troubleshooting 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 anyOC-3cor 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 theuser-settablejumper 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-ohminterfaces), you must use75-ohmsettings 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 theLightStream 2020 Site Planning and Cabling Guide for details about data cables and connectors.) If you have Ethernet cards in your LS2020 switch, note that each card supports only eight ports (0 through 7), although 10 physical connectors are available on the access card. Note also that you can use only one of the10Base-Tor AUI connections on ports 0 and 7.

2-10 LightStream 2020 Installation Guide