Table of Contents

Installing ATM Port Adapters

This chapter describes the procedures for ensuring safety, preparing your site, and installing and replacing port adapters and carrier modules in an ATM chassis. Port adapters and carrier modules are field-replaceable units (FRUs).

For detailed, up-to-date configuration instructions, see the following publications:

• Catalyst 8540 MSR Software Configuration Guide
  
  
• LightStream 1010 ATM Switch and Catalyst 8510 MSR Software Configuration Guide
  
  
• Catalyst 5000 Series Software Configuration Guide
  
  

For command-line interface (CLI) command descriptions, see the following publications:

• Catalyst 8540 MSR Command Reference
  
  
• LightStream 1010 ATM Switch and Catalyst 8510 MSR Command Reference
  
  
• Catalyst 5000 Series Command Reference
  
  

For help with troubleshooting the LightStream 1010 ATM switch, see the LightStream 1010 ATM Switch Troubleshooting Guide.

This chapter is organized into the following sections:

• Safety Guidelines
  
  
• • Ensuring Safety with Electricity
    
    
  • Preventing Electrostatic Discharge Damage
    
    
• Preparing Network Connections
  
  
• • Distance Limitations
    
    
  • ATM Connection Equipment Requirements
    
    
  • Special Considerations
    
    
• Removing and Installing Carrier Modules and Port Adapters
  
  
• • Hot Swapping
    
    
  • Guidelines for Removing and Installing Carrier Modules and Port Adapters
    
    
  • Removing a Carrier Module
    
    
  • Removing a Port Adapter
    
    
  • Installing a Carrier Module
    
    
  • Installing a Port Adapter
    
    

Warning Read the installation instructions before you connect the system to its power source.

Warning Only trained and qualified personnel should be allowed to install or replace this equipment.

Safety Guidelines

Follow these guidelines when installing the port adapter to help ensure your safety and protect the equipment:

• Keep the chassis area clear and free of dust during and after installation.
  
  
• Keep tools and chassis components away from walk areas.
  
  
• Fasten your tie or scarf and roll up your sleeves. Do not wear loose clothing, jewelry (including rings and chains), or other items that could get caught in the chassis.
  
  

Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.

Ensuring Safety with Electricity

The carrier modules, port adapters, and redundant (second) power supplies are hot swappable; that is, they can be removed and replaced while the system is operating without presenting an electrical hazard or causing damage to the system. Before removing a redundant power supply, ensure that the first supply is turned on and that the power supply you are removing is turned off.

Caution Never install equipment that appears to be damaged.

Caution Turn off the system before removing the processor card. Removing the processor card from the system while it operates shuts down ATM switching. However, the processor card is hot swappable in all chassis; that is, no hardware damage occurs if it is removed while the power is on.

Electrical Equipment Guidelines

Follow these guidelines when working with any electrical equipment:

• Locate the emergency off switch for the room in which you are working before beginning any procedures requiring access to the chassis interior.
  
  
• Disconnect all power and external cables before installing or removing a chassis.
  
  
• Do not work alone when potentially hazardous conditions exist.
  
  
• Do not assume that power is disconnected from a circuit; always check.
  
  
• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
  
  
• Do not begin any procedure before carefully examining your work area for possible hazards such as moist floors, ungrounded power extension cables, and missing safety grounds.
  
  

Telephone Wiring and Network Cabling Guidelines

Follow these guidelines when working with any equipment that is disconnected from a power source but is 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.

• Do not install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
  
  
• Do not touch uninsulated telephone wires or terminals unless the telephone line is disconnected at the network interface.
  
  
• 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 processor card and port adapters 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, you should observe the following guidelines for preventing ESD damage.

Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself.

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

Follow these guidelines for preventing ESD damage:

• Use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact.
  
  
• Handle carriers by the faceplates and carrier edges only; avoid touching the card or any connector pins.
  
  
• Connect the equipment end of the strap to one of the captive installation screws on an installed port adapter or power supply before removing any module. (See Figure 2-1.)
  
  

• Place the removed module component side up on an antistatic surface or in a static shielding bag. If the module is to be returned to the factory, immediately place it in a static shielding bag.
  
  
• Avoid contact between the modules and clothing. The wrist strap only protects 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).

Preparing Network Connections

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

• Cabling required for each interface (fiber-optic, coaxial, or twisted-pair cabling)
  
  
• Distance limitations for each signal type
  
  
• Additional interface equipment needed, 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. If you intend to build your own cables, refer to the cable pinouts in the appendix "Connector Pinouts." For ordering information, contact a customer service representative.

• Connections not provided by service providers, such as a network termination unit (NTU) for T1, E1, DS3, and E3 port adapters
  
  

Distance Limitations

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, or multimode 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.

ATM Connection Equipment Requirements

All ATM interfaces are full duplex.You must use the appropriate ATM interface cable to connect the ATM multimode, single-mode, or UTP port adapter with an external ATM network.

Fiber-Optic Traffic

Use the SC-type connector to connect the 155-Mbps and 622-Mbps port adapters with the external connection for traffic over the following types of fiber:

• Multimode
  
  
• Single-mode
  
  
• Single-mode extended-reach
  
  
• Single-mode long-reach
  
  

When laser products are used, the following label appears on the equipment.

Warning Because invisible laser radiation may be emitted from the aperture of the port when no cable is connected, avoid exposure to laser radiation and do not stare into open apertures.

The SC-type fiber-optic connector is shown in Figure 2-2.

UTP Traffic

For UTP traffic, use the RJ-45 connector to connect the port adapter with the external ATM switch. (See Figure 2-3.)

Table B-1, in the appendix "Connector Pinouts," lists the signals for the 155-Mbps UTP port adapter RJ-45 connector.

T1 and E1 Port Adapters and Traffic

For T1 and E1 or CES T1 and E1 port adapters, use the RJ-48c connector to connect the port adapters with the external network. (See Figure 2-3.)

For T1 and E1, or CES T1 and E1 traffic, use the RJ-48c connector to connect the port adapter with the external T1 channel service unit (CSU).

Table B-2, in the appendix "Connector Pinouts," lists the signals for the RJ-48c T1, E1, and CES T1 and E1 connectors.

DS3, E3, E1, and CES E1 Connections

For DS3, E3, E1, and CES E1 connections, use the 75-ohm and 120-ohm (120 ohms in the RJ cables) RG-59 coaxial cable, which has bayonet-style, twist-lock (BNC) connectors to connect the E1, DS3, and E3 port adapter with the external ATM switch. (See Figure 2-4.)

Special Considerations

This section discusses how to limit the EMI susceptibility of the CES E1, E1, and E3 BNC connections, and how to connect the 25-Mbps multiple connection cable from the port adapter to the wiring closet.

CES E1, E1, and E3, Receive Port Capacitor Clips

Networking equipment is subject to problems with electromagnetic interference, due to a loss of grounding integrity, EMI radiated from the port adapter or other installed boards, and a circuit's susceptibility to radiated EMI from other sources.

A capacitor clip is available for use with BNC connectors to reduce the emissions radiated from the receive (RX) port.

The capacitor clip has two spring-loaded clamps so that you can secure the device over the mated BNC connectors on each RX port of a BNC connector. Detail B of Figure 2-5 shows you how to install these clips.

Caution Compliance with European certification standards is contingent upon the use of these capacitor clips on port adapters with BNC connectors.

25-Mbps Port Adapter Connections

For 25-Mbps port adapter connections, use the special 96-pin Molex to 12-RJ-45 multileg cable to connect the switch to the wiring closet patch panel. (See Figure 2-6.)

Caution To avoid receiving erroneous failure messages, allow at least 15 seconds for the system to reinitialize. Note the current configuration of all interfaces before you remove or insert another port adapter.

Removing and Installing Carrier Modules and Port Adapters

This section describes how to remove and install carrier modules and port adapters and includes the following sections:

• Hot Swapping
  
  
• Guidelines for Removing and Installing Carrier Modules and Port Adapters
  
  
• Removing a Carrier Module
  
  
• Removing a Port Adapter
  
  
• Installing a Carrier Module
  
  
• Installing a Port Adapter
  
  

Hot Swapping

All carrier modules and port adapters support hot swapping, so that you can install, remove, replace, and rearrange the carrier modules or port adapters without turning off the system power. When the system detects that a carrier module or port adapter is installed or removed, it automatically runs diagnostic and discovery routines, acknowledges the presence or absence of the port adapter, and resumes system operation without any operator intervention.

Caution Turn off the system before removing the processor card. Removing the processor card from the system while it operates shuts down ATM switching. However, the processor card is hot swappable in all chassis; that is, no hardware damage occurs if it is removed while the power is on.

Guidelines for Removing and Installing Carrier Modules and Port Adapters

The ejector levers and captive installation screws align and seat the card connectors in the backplane. (See Figure 2-7.) Follow the installation and removal instructions carefully, and avoid the following incorrect insertion practices:

Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.

• Do not use the faceplate to force or slam a carrier module or port adapter into a slot; this action can damage the pins on the module connectors. Use the ejector levers and captive installation screws.
  
  
• Do not use the faceplate (rather than the ejector levers or captive installation screws) to seat the processor card, carrier module, or port adapter in the backplane; this action can seat the carrier module or port adapter improperly. Use the ejector levers and captive installation screws to ensure that the card connector mates with the backplane correctly.
  
  
• Do not use the faceplate to insert a processor card, carrier module, or port adapter, and do not fail to push the ejector levers to the full 90-degree position. If some but not all of the connector pins are mated to the backplane, the system might be suspended. Use the ejector levers and captive installation screws to ensure that all three layers of pins mate with the backplane.
  
  
• Do not insert the carrier module or port adapter too slowly (for example, leaving a component partially inserted). This action could cause the switch software to time-out and fail to recognize the installed component. If that happens, disconnect and reinsert the carrier module or port adapter again.
  
  

Using Ejector Levers and Captive Installation Screws

To ensure that the card connector pins disconnect from the backplane in the logical sequence expected by the system, be sure to use the ejector levers and captive installation screws when removing a processor card, carrier module, or port adapter. Any processor card, carrier module, or port adapter that is only partially connected to the backplane can hang the bus. Detailed steps for correctly performing hot swapping are included in the following procedures for removing and installing carrier modules or port adapters.

Figure 2-7 shows the ejector levers and captive installation screws, which you must use when inserting or removing the carrier modules.

Tools Required

You need a 3/16-inch flat-blade screwdriver to remove any filler port adapters and to tighten the captive installation screws that secure the carrier modules and port adapters in their slots. Whenever you handle carrier modules or port adapters, you should use a wrist strap or other grounding device to prevent electrostatic discharge (ESD) damage. See the section "Preventing Electrostatic Discharge Damage."

Removing a Carrier Module

To remove a carrier module, follow these steps:

Warning Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first.

Step 1   Disconnect all cables from the port adapter that is going to be removed.

Caution Failure to disconnect cables could damage the port adapters.

Step 2   Loosen the captive installation screws at the left and right sides of the carrier module with a screwdriver.

Step 3   Place your thumbs on the left and right ejector levers and simultaneously push the left lever left and the right lever right to release the carrier module from the backplane connector.

Step 4   Grasp the carrier module faceplate with one hand and place your other hand under the carrier to support and guide the module out of the slot. Avoid touching the card.

Step 5   Pull the carrier module straight out of the slot carefully, keeping your other hand under the carrier to guide it. Keep the module at a 90-degree orientation to the backplane.

Step 6   Place the removed carrier module on an antistatic mat or antistatic foam, or immediately install it in another slot.

Step 7   If the carrier module slot is to remain empty, install a module filler plate (product number WATM-CAM-2P=) to keep dust out of the chassis and to maintain proper airflow through the module compartment.

Caution Always install the carrier module filler plate in empty slots to maintain the proper flow of cooling air across the cards.

Removing a Port Adapter

To remove a port adapter, follow these steps:

Warning Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first.

Step 1   Disconnect all cables from the port adapter that is going to be removed.

Caution Failure to disconnect cables could damage the port adapters.

Step 2   Loosen the captive installation screw in the center of the port adapter. As you loosen the captive installation screw in the port adapter, it will disengage from the carrier module interface at the rear of the module.

Step 3   Pull the port adapter straight out of the carrier module slot carefully, keeping your other hand under the carrier to guide it. Keep the module at a 90-degree orientation to the backplane.

Step 4   Place the port adapter on an antistatic mat or antistatic foam, or immediately install it in another carrier module.

Installing a Carrier Module

You can install carrier modules in any of the four carrier module slots numbered 0 through 4 from top to bottom when viewing the chassis from the front. (See Figure 2-8.) The middle slot (number 2) contains the processor card, which is a required system component. Blank carrier module and port adapter fillers are installed in empty carrier module or port adapter slots to maintain consistent airflow through the module compartment.

To install a carrier module, follow these steps:

Caution To prevent ESD damage, handle the carrier module by the carrier edges only.

Step 1   Ensure that there is enough clearance to accommodate any interface equipment that you connect directly to the carrier module ports. If possible, install carrier modules between empty slots that contain only module filler plates.

Step 2   Secure the carrier module with the two captive installation screws. Use a 1/4-inch flat-blade screwdriver to loosen the captive installation screws and remove the carrier module filler (or the existing carrier module) from the slot you want to use.

Step 3   Hold the carrier module faceplate with one hand, and place your other hand under the carrier and guide it into the slot. Avoid touching the card. (See Figure 2-9.)

Step 4   Place the back of the carrier module in the slot and align the notch on each side of the carrier module with the groove in the slot.

Step 5   Keep the carrier module at a 90-degree orientation to the backplane and carefully slide it into the slot until the faceplate makes contact with the ejector levers.

Step 6   Use the thumb and forefinger of each hand to simultaneously push the left lever and the right lever in until the carrier module is fully seated in the backplane connector.

Caution Always use the ejector levers when installing or removing the carrier module. Leaving a module only partially seated in the backplane causes the system to halt and subsequently crash.

Step 7   Use a screwdriver to tighten the captive installation screws on the left and right ends of the carrier module.

Step 8   Attach network interface cables or other devices to the interface ports.

Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.

Step 9   Turn the power on. See the section "Starting the System" in the Hardware Installation Guide or the Catalyst 5000 Series Installation Guide.

Step 10   Check the status of the interfaces as follows:

If this installation is a replacement port adapter, use the show configuration or show interface atm [slot_num/mod_num/port_num] command to verify that the system has acknowledged the new interfaces and has brought them up.

For detailed, up-to-date configuration instructions, see the LightStream 1010 ATM Switch and Catalyst 8510 MSR Software Configuration Guide. For command-line interface (CLI) command descriptions, see the LightStream 1010 ATM Switch and Catalyst 8510 MSR Command Reference.

Installing a Port Adapter

All port adapters support hot swapping, and can be removed or installed while the system is operating. To install a port adapter, follow these steps:

Step 1   Choose a port adapter slot in a carrier module and ensure that there is enough clearance to accommodate any interface equipment that you connect directly to the port adapter ports. (See Figure 2-10.) If possible, place port adapters between empty slots that contain only port adapter filler plates.

Caution To prevent ESD damage, handle port adapters by the carrier edges only.

Step 2   Place the back of the port adapter in the slot and align the notch on the sides of the module carrier with the groove in the slot. (See Figure 2-11.)

Step 3   Hold the port adapter by both sides and guide it into the slot. Avoid touching the port adapter components.

Step 4   Keep the port adapter at a 90-degree orientation to the backplane and carefully slide the port adapter into the slot until the faceplate makes contact with the carrier module faceplate.

Step 5   Use a 1/4-inch flat-blade screwdriver to tighten the captive installation screw in the center of the port adapter faceplate. Draw the port adapter into the carrier module connector until the port adapter faceplate is flush with the carrier module faceplate and the carrier module is fully seated in the connector. (See Figure 2-11.)

Step 6   Attach network interface cables or other devices to the interface ports.

Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.

Caution Always use the captive screws when installing or removing port adapters. Leaving a module only partially seated in the carrier module connector causes the system to halt and subsequently crash.

Step 7   Check the status of the interfaces as follows:

If this installation is a replacement port adapter, use the show configuration or show interface atm [card/subcard/port] command to verify that the system has acknowledged the new interfaces and has brought them up.

For detailed, up-to-date configuration instructions, see the LightStream 1010 ATM Switch and Catalyst 8510 MSR Software Configuration Guide. For command-line interface (CLI) command descriptions, see the LightStream 1010 ATM Switch and Catalyst 8510 MSR Command Reference.