|
|
This chapter describes how to prepare your site for installation and rack-mount the Catalyst 4840G SLB switch. It also provides instructions for installing and removing Gigabit Interface Converters (GBICs) and Flash PC cards, connecting to ports, and connecting power to the SLB switch. For first-time installations, perform the procedures in the following sections in the order listed here:
Planning the proper location and layout of your equipment rack or wiring closet is essential for successful SLB switch operation. Equipment placed too close together or in an inadequately ventilated area can cause system overtemperature conditions. In addition, poor equipment placement can make system panels inaccessible and difficult to maintain.
To ensure normal operation and avoid unnecessary maintenance, plan your site configuration and prepare your site before installation. For a description of the environmental monitor, see the "Power Supplies".
Table A-1 lists the operating and nonoperating environmental site requirements for the SLB switch. Within specified environmental ranges the system can continue to operate; however, a measurement that approaches the minimum or maximum of a range indicates a potential problem. You can maintain normal operation by anticipating and correcting environmental conditions before they exceed the maximum operating range.
Verify the site power for the type of device you are installing. Power requirements are useful for planning the power distribution system needed to support the SLB switch. Heat dissipation is an important consideration for sizing the air-conditioning requirements for an installation. See Table A-1 for power and heat ratings for the SLB switch.
 |
Caution To prevent a loss of input power, verify that the total maximum load on the circuit supplying power to the power supply is within the current ratings of the wiring and breakers. |
You need the following tools to install the SLB switch in a rack:
The following items are included in the accessory kit that ships with the switch:
 |
Warning Unplug power cords before you work on a system that does not have an on and off switch. |
To install the SLB switch in a rack, follow these steps:
a. Place the SLB switch on the floor or on a sturdy table as close as possible to the rack. Leave enough clearance so that you can move around the switch.
c. Measure the space between the inner edges of the left-front and right-front mounting posts to ensure that the space is 17.75 inches (45.72 cm) wide.
 |
Note Some equipment racks provide a power strip along the length of one of the rear posts. If your rack has this feature, consider the position of the strip when planning fastener points. Before installing the L brackets on the SLB switch, decide whether to install the SLB switch from the front or the rear of the rack. |
Step 2 Remove the four (two on each side) M3 screws that are adjacent to the vent openings on the sides of the chassis. (See Figure 2-1.)
Step 3 Attach the left and right L brackets using the eight (four on each side) flat-head Phillips screws provided in the rack-mount kit. (See Figure 2-2.)
Step 4 Install the SLB switch in the rack as follows:
a. Insert the rear of the SLB switch between the mounting posts.
b. Align the mounting holes in the L bracket with the mounting holes in the equipment rack.
c. Secure the SLB switch by screwing four (two on each side) 12-24 x 3/4-inch screws through the elongated holes in the L bracket and into the threaded holes in the mounting post. (See Figure 2-3.)
The SLB switch powers up when you plug in the power cord. See "Connecting Power to the SLB Switch" for instructions.
A Gigabit Interface Converter (GBIC) is a hot-swappable input/output device that plugs into the Gigabit Ethernet port, linking the SLB switch with the fiber-optic network. (See Figure 2-4.) The SLB switch has two Gigabit Ethernet ports. The following GBIC media types are supported:
|
Note Because of interoperability issues, Cisco does not support GBICs purchased from third-party vendors. See Table B-2 for GBIC port specifications. |
|
Caution If a 1000BASE-LX/LH GBIC designed for operation on single-mode fiber (SMF) cable is directly coupled to a multimode fiber (MMF) cable, DMD can occur. See "Differential Mode Delay". |
|
Caution Unnecessary removal or insertion of a GBIC could lead to premature failure of the GBIC. A GBIC has a lifetime of 100 to 500 removals or insertions. |
Follow these GBIC care and handling guidelines:
|
Caution When inserting or removing a GBIC, always wear an ESD wrist strap connected to the ESD wrist-strap connector. |
|
Note GBICs are hot-swappable. |
To install a GBIC, follow these steps:
Step 2 Remove the GBIC from its protective packaging.
Step 3 Verify that the GBIC is the correct type for your network by checking the part number. The part number indicates whether it is 1000BASE-SX, 1000BASE-LX/LH, or 1000BASE-ZX.
Step 4 Grip the sides of the GBIC with your thumb and forefinger; insert the GBIC into the slot on the front of the module. (See Figure 2-6.)
|
Note GBICs are keyed to prevent incorrect slot insertion. |
Step 5 Slide the GBIC into the slot until you hear a click. The click indicates that the GBIC is locked into the slot.
Step 6 Remove the plugs from the GBIC when you are ready to attach the fiber-optic cable. Save the plugs for future use.
|
Caution Do not remove the plugs from the GBIC optical bores or the fiber-optic cable until you are ready to connect the cable. The plugs protect the GBIC optical bores and cable from contamination. |
|
Note If you are removing the GBIC from an online SLB switch, enter the show interface command for the port you are removing the GBIC from to verify the type of GBIC that is installed. |
To remove a GBIC, follow these steps:
Step 2 Disconnect the fiber-optic cable from the GBIC SC-type connector.
Step 3 Release the GBIC from the slot by simultaneously squeezing the plastic tabs (one on each side of the GBIC).
Step 4 Pull the GBIC out of the slot.
Step 5 Install the plugs in the GBIC optical bores, and place the GBIC in protective packaging.
When using the 1000BASE-LX/LH GBIC with 62.5-micron-diameter multimode fiber (MMF), you must install a mode-conditioning patch cord between the GBIC and the MMF cable on both the transmit and receive ends of the link. You need the patch cord for link distances greater than 984 feet (300 meters). For link spans less than 300 meters, you can omit the patch cord.
The patch cord must comply with IEEE standards. The IEEE found that link distances are not compatible with certain types of fiber-optic cable because of a problem in the center of some fiber-optic cable cores. The solution is to launch light from the laser at a precise offset from the center by using the patch cord. At the output of the patch cord, the 1000BaseLX/LH GBIC is compliant with the IEEE 802.3z standard for 1000BaseLX. For a detailed description of this problem, refer to "Differential Mode Delay".
|
Note Cisco Gigabit Ethernet products have been tested and evaluated to comply with the standards listed in "Cable and Port Pinouts." Equivalent cables should also meet these standards. |
Plug the end of the patch cord labeled "To equipment" into the GBIC (see Figure 2-7). Plug the end labeled "To cable plant" into the patch panel. The patch cord is 9.84 feet (3 meters) long and has duplex SC-type male connectors at each end.
This section describes how to install and remove Flash PC cards. You can install or remove a Flash PC card with the chassis power on. The SLB switch includes a Flash PC card slot that accepts 8-MB, 16-MB, and 32-MB Type I Flash PC cards. The Flash PC card stores the system image and also can store software and microcode images for other systems.
You must format Flash PC cards before you use them. For formatting instructions, refer to the Catalyst 4840G Software Feature and Configuration Guide.
To install a Flash PC card, follow these steps:
Step 2 Insert the card into the slot until the card is completely seated in the connector at the back of the slot and the eject button pops out toward you. (See Figure 2-8.) Do not attempt to force the card past this point.
|
Note The Flash PC card is keyed and cannot be seated the wrong way. The eject button does not pop out until the card is inserted properly. |
To remove a Flash PC card, follow these steps:
Step 2 Remove the card from the slot and place it in an antistatic bag to protect it from ESD damage.
To connect to the Gigabit Ethernet ports, follow these steps:
Step 2 Remove the plugs from the SC-type connector on the fiber-optic cable. Insert the connector into the GBIC. (See Figure 2-9.)
|
Note When you plug the SC-type connector into the GBIC, make sure that both the Tx and Rx fiber-optic cables are fully inserted into the SC-type connector. |
|
Note If you are using the 1000BASE-LX/LH GBIC with MMF, you must install a patch cord between the GBIC and the MMF cable. See the "Patch Cord". |
Step 3 Connect the other end of the cable to the external end system, switch, or router.
Step 4 Verify the connection by checking the port link status LED. See Table 1-1 for LED descriptions.
To connect to the 10/100 Fast Ethernet ports, follow these steps:
Step 2 Connect the appropriate modular cables to the Fast Ethernet ports. (See Figure 2-10.)
Step 3 Connect the other end of the cable to the external end system, switch, or router.
Step 4 Verify the connection by checking the port link status LED. See Table 1-1 for LED descriptions.
For configuration information, refer to the Catalyst 4840G Software Feature and Configuration Guide.
To connect to the management ports, follow these steps:
Step 2 Connect the cable to the console port.
Step 3 Attach the other end of the cable to the external device.
Step 4 Verify the connection by checking the port link status LED. See Table 1-1 for LED descriptions.
For configuration information, refer to the Catalyst 4840G Software Feature and Configuration Guide.
To connect power to the SLB switch, follow these steps.
Step 2 Plug the power cord into the power cord connector located at the right of the back panel on the chassis.
Step 3 Connect the other end of the power cord to a power source.
Step 4 Verify power supply operation by checking the front panel power supply LED. See Table 1-1 for LED descriptions.
See "Troubleshooting the SLB Switch," if the LEDs indicate a power problem or other SLB switch problem.
|
Caution Multiple power connections may be provided. To deenergize, disconnect the power cord on the Catalyst 4840G SLB and the RPS power cord, if present. |
Installing and removing the RPS II from the Catalyst 4840G SLB switch includes the following tasks:
Before installing the RPS II in a rack, read the Site Preparation and Safety Guide to familiarize yourself with proper site and environmental conditions.
You need the following tools to install the RPS II switch in a rack:
The following items are included in the accessory kit that ships with the RPS II:
|
Warning Unplug power cords before you work on a system that does not have an on and off switch. |
To install the RPS II in a rack, follow these steps:
a. Place the RPS II on the floor or on a sturdy table as close as possible to the rack. Leave enough clearance so that you can move around the freely.
c. Measure the space between the inner edges of the left-front and right-front mounting posts to ensure that the space is 17.75 inches (45.72 cm) wide.
|
Note Some equipment racks provide a power strip along the length of one of the rear posts. If your rack has this feature, consider the position of the strip when planning fastener points. Before installing the L brackets on the RPS II, decide whether to install the RPS II from the front or the rear of the rack. |
Step 2 Attach the left and right L brackets using the four (two on each side) flat-head Phillips screws provided in the rack-mount kit. (See Figure 2-12.)
Step 3 Install the RPS II in the rack as follows:
a. Insert the rear of the RPS II between the mounting posts.
b. Align the mounting holes in the L bracket with the mounting holes in the equipment rack.
c. Secure the RPS II by screwing four (two on each side) 12-24 x 3/4-inch screws through the elongated holes in the L bracket and into the threaded holes in the mounting post. (See Figure 2-13.)
The RPS II powers up when you plug in the power cord. See "Connecting the RPS II Cable to the Switch" for instructions.
You can connect the RPS II to a switch that is up and running or to a switch that is not currently powered on.
|
Caution Use only the DC cable (part number 72-2139-01) to connect the switch to the Cisco RPS II. |
To connect the RPS II to an operating Catalyst 4840G SLB switch, follow these steps:
Step 2 Push the AC power supply module into the appropriate power supply bay of the RPS II.
Step 3 Tighten the captive installation screws with a Phillips screwdriver.
Step 4 Power on the RPS II by plugging the power cord into the power source, if it is not already powered up.
Step 5 Verify the RPS II connection by checking the LEDs on the RPS II power supply. The two LEDs (see Figure 2-14) on the power supply indicate the status of the power supply. The AC OK LED indicates that the power supply is on and receiving source power. The DC OK LED indicates that the power supply output is normal and on.
To connect the RPS II to a Catalyst 4840G SLB switch that is not powered on, follow these steps:
Step 2 Push the AC power supply into the power supply bay of the RPS II.
Step 3 Tighten the captive installation screws with a Phillips screwdriver.
Step 4 Power on the Catalyst 4840G SLB switch by plugging the power cord into the power source.
Step 5 Power on the RPS II by plugging the power cord into the power source.
Step 6 Verify the RPS II connection by checking the LEDs on the RPS II power supply. (See Figure 2-14.)
To install a power supply in the RPS II, follow these steps:
Step 2 Remove the power supply bay cover plate.
Step 3 Use a Phillips screwdriver to loosen the RPS II cable bay cover plate screws by turning them counter-clockwise.
Step 4 Remove the RPS II cable bay cover plate.
Step 5 Grasp the power supply handle with one hand. Place your other hand underneath to support the bottom of the power supply. (See Figure 2-15.)
Step 6 Push the power supply into the power supply bay until the faceplate is flush with the cover.
Step 7 Use a Phillips screwdriver to tighten the captive installation screws by turning them clockwise.
Step 8 Connect the DC cable (part number 72-2139-01) from the RPS II to the
Catalyst 4840G switch.
Step 9 Power on the RPS II by plugging in the power cord, if not already connected.
Step 10 Verify the RPS II connection by checking the LEDs on the RPS II. (See Figure 2-14.)
To remove a power supply from the RPS II, follow these steps:
Step 2 Use a Phillips screwdriver to loosen the captive installation screws on the power supply.
Step 3 Grasp the power supply handle with one hand. Slowly pull the power supply out of the chassis toward you. While holding the power supply handle with one hand, place your other hand underneath to support the bottom of the power supply. See Figure 2-16.
Step 4 Pull the power supply out of the bay and put it aside.
Step 5 If the power supply bay is to remain empty, install a power supply cover plate over the power supply bay opening and secure it with the mounting screws.
Posted: Thu Sep 28 15:36:25 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.