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This chapter describes the equipment and site requirements for installing the LightStream 1010 ATM CMs, and PAMs. It includes 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:
 | 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 5000 Series 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 5000 Series Installation Guide. |
| 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 5000 Series 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 5000 Series 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 5000 Series Installation Guide. |
Follow these basic guidelines when working with any electrical equipment:
In addition, use the guidelines that follow 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 5000 Series Installation Guide. |
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:
| Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms (Mohms). |
This section discusses the site environment requirements for the switch interface connections.
Following are guidelines 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.
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:
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 easily couple enough energy into unshielded conductors to destroy electronic devices. If you have had problems of this sort in the past, you might want to 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 cost a great deal of time to identify and resolve, so take precautions by providing a properly grounded and shielded environment, paying special attention to issues of electrical surge suppression.
The length of your 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 a greater channel capacity than twisted-pair cabling.
The following distance limits are provided as guidelines for planning your network connections before installation.
The maximum distances for ATM network segments and connections depend on the type of transmission cable used, for example, unshielded twisted-pair (UTP), single-mode (SM), or multimode (MM) fiber-optic cable.
Networking standards set recommended maximum distances between stations using fiber-optic and UTP cable. The recommended maximum cable lengths are listed in Table 2-1.
| Transceiver Speed | Cable Type | Maximum Distance between Stations |
|---|---|---|
OC3, 155 Mbps | Category 5 UTP | 328 feet (100 meters) |
OC3, 155 Mbps | Single-mode fiber | 9 miles (15 km) |
OC3, 155 Mbps | Single-mode fiber, extended reach + | 18 miles (30 km) |
OC3, 155 Mbps | Single-mode fiber, long reach | 25 miles (40 km) |
OC3, 155 Mbps | Multimode fiber | 1.2 miles (2 km) |
OC12, 622 Mbps | Single-mode fiber | 9 miles (15 km) |
OC12, 622 Mbps | Single-mode fiber, long reach | 25 miles (40 km)1 |
OC12, 622 Mbps | Multimode fiber | 1,640 feet (500 meters) |
DS-3, 45 Mbps | Coaxial cable | 450 feet (137 meters) |
E3, 34 Mbps | Coaxial cable | 450 feet (137 meters) |
T1, 1.544 Mbps | Category 5 twisted-pair | 650 feet (198 meters) |
E1, 2.048 Mbps | Category 5 twisted-pair and STP (120-ohm) | 650 feet (198 meters) |
E1, 2.048 Mbps | Coaxial cable (75-ohm) | 650 feet (198 meters) |
CES T1 | Category 5 twisted-pair and STP | 650 feet (198 meters) |
CES E1 | Category 5 twisted-pair and STP (120-ohm) | 650 feet (198 meters) |
CES E1 | Coaxial cable (75-ohm) | 650 feet (198 meters) |
25 Mbps | Category 5 UTP | 328 feet (100 meters) |
| 1If attaching a short cable to the OC12, 622Mbps long-reach PAM you must add 10dBm of attenuation to the cable or the transmitter might overdrive the receiver and introduce data errors. |
Table 2-1 provides guidelines for planning maximum cable spans. For detailed calculations of dispersion and power budget limits, refer to the, Technician's Guide to Fiber Optics, written by D. Sterling, published by Delmar Publishers, 1993.
The following publications contain information on determining attenuation and power budget:
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 are precautions that can help avoid problems during installation and ongoing operation.
Follow these general precautions when planning your equipment locations and connections:
When preparing your site for network connections to the switch, consider numerous factors related to each type of interface:
All ATM interfaces are full duplex.You must use the appropriate ATM interface cable to connect the ATM MM, SM, or UTP PAM with an external ATM network.
For fiber-optic traffic over MM, SM, SM extended-reach, SM long-reach use the SC-type connector to connect the 155 and 622 PAMs with the external connection.
| Warning Invisible laser radiation can be emitted from the aperture ports of the SM Fiber Distributed Data Interface (FDDI) card when no cable is connected. Avoid exposure and do not stare into open apertures. 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 5000 Series Installation Guide. |
The fiber-optic connector (SC-type) is shown in Figure 2-2.
For UTP traffic, use the RJ-45 connector (Figure 2-3) to connect the PAMs with the external ATM switch.
Table B-1, in the appendix "PAM Cabling Specifications," lists the signals for the 155-UTP PAM RJ-45 connector.
For T1and E1 or T1 and E1 CES PAMs, use the RJ-48c connector (Figure 2-3) to connect the PAMs with the external network.
For T1, CES T1, E1 and CES E1 traffic, use the RJ-48c connector to connect the PAM with the external T1 CSU.
Table B-2, in the appendix "PAM Cabling Specifications," lists the signals for the RJ-48c T1, E1, CS t1, and CES E1 connectors.
For DS-3, E3, E1, and CES E1 connections, use the 75- and 120-ohm (120-ohm in the RJ cables) RG-59 coaxial cable (Figure 2-4), which has bayonet-style, twist-lock (BNC) connectors to connect the E1, DS-3, and E3 PAM with the external ATM switch.
This cable is not shipped with the CES E1 (BNC) PAM. You can order this item separately using Cisco part number 72-0875-01.
If you have a PAM with BNC connectors, you have the option of taking certain steps to help you:
The following sections describe the actions you can take to promote these benefits.
A device called a capacitor clip is available for use with BNC connectors to reduce the emissions radiated from the receive (RX) port.
The capacitor clip embodies two spring-loaded clamps that enable the device to be secured over the mated BNC connectors on each RX port of a BNC connector. Detail B of Figure 2-5 shows how these clips are installed.
Compliance with European certification standards is contingent upon the use of these capacitor clips on PAMs with BNC connectors.
These capacitor clips do not ship with PAMs. You can order them separately using Cisco part number CLIP-EMI-BNC-ATM.
For 25 Mbps connections, use the special 96-pin Molex to 12-RJ-45 multi-leg cable (Figure 2-6) to connect the switch to the wiring closet patch panel.
When receiving a CM or PAM, you need to read the following instructions.
Take the following steps to check the contents of your LightStream 1010 ATM 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:
Step 2 Proceed to the chapter "Installing the LightStream 1010 ATM Switch PAMs" to begin installation.
In the event that you need to return or move the LightStream 1010 ATM switch, the following instructions describe repacking the switch using the original packaging material:
Step 1 Place the CM or PAM in the antistatic bag.
Step 2 Place the antistatic bag holding the CM or PAM into the shipping container between the foam pads.
Step 3 Seal the container with shipping tape and return it as specified by your Cisco Systems Service representative.
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