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This chapter describes installation procedures for the LightStream 1010 asynchronous transfer mode (ATM) switch carrier modules (CMs) and port adapter modules (PAMs). Your switch is configured as specified in your order and is ready for installation and startup when it leaves the factory. As your communication requirements change, you might want to upgrade your system, add components, or change the initial configuration. This chapter describes the procedures for installing, replacing, and reconfiguring port adapter modules (PAMs) as these modules are field-replaceable units (FRUs). Software and component upgrades require specific document part numbers and other frequently updated information; therefore, only basic replacement guidelines are included in this publication. Detailed, up-to-date instructions are included in the LightStream 1010 ATM Switch Software Configuration Guide.
There are two kinds of replaceable system components: those that support hot-swapping and those that require you to shut down the system power before you replace them. Redundant power supplies, carrier modules (CMs), PAMs, and the fan assembly can be replaced while the system is operating.
 | Caution Though all CMs and PAMs support hot-swapping, the ATM Switch Processor (ASP) is a required system component. Removing an ASP while the system is operating will cause the system to shut down and may damage the ASP. Do not remove the ASP while the switch is powered on. |
This chapter contains the following information:
 | 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 5500 Installation Guide. |
All CMs and PAMs support hot swapping, which allows you to install, remove, replace, and rearrange the CMs or PAMs without turning off the system power. When the system detects that a CM or PAM has been installed or removed, it automatically runs diagnostic and discovery routines, acknowledges the presence or absence of the PAM, and resumes system operation without any operator intervention.
| Caution All CMs or PAMs support hot-swapping. The ASP is a required system component. Removing an ASP while the system is operating will cause the system to shut down and may damage the processor. |
The hot-swap feature allows you to remove and replace modules while the system is operating; you do not need to notify the software or shut down the system power. All CMs and PAMs (except for the ASP) support hot-swapping.
Each CM contains a bus-type connector that mates with the system backplane. Each card connector consists of a set of tiered pins, in three lengths. The pins send specific signals to the system as they make contact with the backplane. The system assesses the signals it receives and the order in which it receives them. It determines what event is occurring and what tasks it needs to perform, such as reinitializing new interfaces or shutting down removed ones.
For example, the longest pins on a CM make contact with the backplane first, and the shortest pins make contact last. The system recognizes the signals and the sequence in which it receives them. The system expects to receive signals from the individual pins in this logical sequence, and the ejector levers help to ensure that the pins mate in this sequence.
When you remove or insert a PAM, the backplane pins send signals to notify the system, which then:
1. Rapidly scans the backplane for configuration changes.
2. Initializes all newly inserted PAMs, noting any removed interfaces and placing them in the administratively shutdown state.
3. Brings all previously configured interfaces on the PAM back to the state they were in when they were removed. If a PAM, similar to the one that was removed, has been inserted into a slot, then its ports are configured and brought online up to the port count of the original PAM.
Dissimilar or unconfigured PAMs installed for the first time start up in the shutdown state. The system identifies them as present but unconfigured. Each must be manually configured from the command line.
Hot-swap functionality enables you to add, remove, or replace CMs or PAMs with the system online. This maintains all routing information, and ensures session preservation.
| Caution To avoid 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 PAM. |
When you remove and replace CMs and PAMs, the system provides status messages on the console screen. The messages are for information only. In the following sample display, you can follow the events logged by the system when a PAM is removed from slot 3/0. When the PAM is reinserted, the system marks the module as ready again.
Switch# %OIR-6-REMCARD: Card removed from slot 3/0, interfaces disabled %LINK-5-CHANGED: Interface 155UTP 3/0, changed state to administratively down %LINK-5-CHANGED: Interface 155UTP 3/0, changed state to administratively down Switch# %OIR-6-INSCARD: Card inserted in slot 3/0, interfaces administratively shut down %LINK-5-CHANGED: Interface 155UTP 3/0, changed state to up %LINK-5-CHANGED: Interface 155UTP 3/0, changed state to up Switch#
The ejector levers and captive installation screws (Figure 3-1) align and seat the card connectors in the backplane. Follow the installation and removal instructions carefully, and avoid the following incorrect insertion practices:
It is also important to use the ejector levers and captive installation screws when removing an ASP, CM, or PAM, to ensure that the card connector pins disconnect from the backplane in the logical sequence expected by the system. Any ASP, CM, or PAM 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 installing and removing CMs or PAMs. For more information, see the explanation "What is Hot Swapping?" earlier in this section.
Following are detailed steps for removing and replacing CMs or PAMs and successfully performing hot-swapping. Figure 3-1 shows the ejector levers and captive installation screw, which you must use when inserting or removing the CMs.
You need a 3/16-inch flat-blade screwdriver to remove any filler (blank) PAMs and to tighten the captive installation screws that secure the CMs and PAMs in their slots. Whenever you handle CMs or PAMs, you should use a wrist strap or other grounding device to prevent electrostatic discharge (ESD) damage. See the section "Preventing Electrostatic Discharge Damage" in the preceding chapter "Preparing for Installation."
Take the following steps to remove a CM:
Step 1 Disconnect all cables from the PAM(s) which are going to be removed.
| Caution Failure to disconnect cables could damage the PAMs. |
Step 2 Use a screwdriver to loosen the captive installation screws at the left and right sides of the CM.
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 CM from the backplane connector.
Step 4 Grasp the CM 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 Carefully pull the CM straight out of the slot, 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 CM on an antistatic mat or antistatic foam, or immediately install it in another slot.
Step 7 If the CM 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 CM filler plate in empty slots to maintain the proper flow of cooling air across the cards. |
| Caution
The ASP is a required system component. Removing an ASP while the system is operating will cause the system to shut down and may damage the processor. Power off the system before removing the ASP. |
You can install CMs in any of the four CM slots numbered 0 through 4 from top to bottom when viewing the chassis from the front. (See Figure 3-2.) The middle slot
(number 2) contains the ASP, which is a required system component. Blank CM and PAM fillers are installed in empty CM or PAM slots to maintain consistent airflow through the module compartment.
Take the following steps to install a CM:
| Caution Handle the CM by the carrier edges only to prevent ESD damage. |
Step 1 If replacing a CM, ensure that there is enough clearance to accommodate any interface equipment that you will connect directly to the CM ports. If possible, install CMs between empty slots that contain only module filler plates.
Step 2 The CM is secured with two captive installation screws. Use a 1/4-inch flat-blade screwdriver to loosen the captive installation screws and remove the CM filler (or the existing CM) from the slot you want to use.
Step 3 Hold the CM faceplate with one hand, and place your other hand under the carrier and guide it into the slot. Avoid touching the card. (See Figure 3-3.)
Step 4 Place the back of the CM in the slot and align the notch on each side of the module carrier with the groove in the slot.
Step 5 While keeping the CM at a 90-degree orientation to the backplane, carefully slide it into the slot until the faceplate makes contact with the ejector levers.
Step 6 Using the thumb and forefinger of each hand, simultaneously push the left lever and the right lever in to fully seat the CM in the backplane connector.
Step 7 Use a screwdriver to tighten the captive installation screws on the left and right ends of the CM.
Step 8 Attach network interface cables or other devices to the interface ports.
Step 9 If needed, turn the power back on. See the section "Starting the System" in the LightStream 1010 ATM Switch Hardware Installation Guide or Catalyst 5500 Installation Guide.
Step 10 Check the status of the interfaces as follows:
Following are removal and installation steps for the PAMs. All PAMs support hot-swapping, and can be removed or installed while the system is operating.
| Caution Handle PAMs by the carrier edges only, to prevent ESD damage. |
| Caution Failure to disconnect cables could damage the PAMs. |
Step 1 Disconnect all cables from the PAM(s) to be removed.
Step 2 Choose a PAM slot in a CM (see Figure 3-4) and ensure that there is enough clearance to accommodate any interface equipment that you will connect directly to the PAM ports. If possible, place PAMs between empty slots that contain only PAM filler plates.
Step 3 PAMs are secured with one captive installation screw in the center of the faceplate. Use a 1/4-inch flat-blade screwdriver to loosen the captive installation screw and remove the PAM filler (or the existing PAM) from the PAM slot you want to use.
Step 4 Place the back of the PAM in the slot and align the notch on the sides of the module carrier with the groove in the slot. (See Figure 3-5.)
Step 5 Hold the PAM by both sides and guide it into the slot. Avoid touching the PAM's components.
Step 6 While keeping the PAM at a 90-degree orientation to the backplane, carefully slide the PAM into the slot until the faceplate makes contact with the CM faceplate.
Step 7 Use a 1/4-inch flat-blade screwdriver to tighten the captive installation screw in the center of the PAM faceplate and draw the PAM into the CM connector until the PAM faceplate is flush with the CM faceplate and the CM is fully seated in the connector. (See Figure 3-5.)
Step 8 Attach network interface cables or other devices to the interface ports.
Step 9 Check the status of the interfaces as follows:
Each interface (or port) in the switch is designated by several different types of addresses. The physical interface address is the actual physical location (card/sub_card/port) of the interface connector within the chassis. The system software uses the physical addresses to control activity within the switch and to display status information. These physical card/sub_card/port addresses are not used by other devices in the network; they are specific to the individual switch and its internal components and software.
The following sections describe how the LightStream 1010 switch assigns and controls both the physical (card/sub_card/port) and Media Access Control (MAC)-layer addresses for interfaces within the chassis.
In the LightStream 1010 switch, port IDs specify the actual physical location of each PAM port on the front of the switch. (See Figure 3-6.) The address is composed of a three-part number in the format card/subcard_number/port number.
The first number identifies the slot in which the module is installed. Module slots are numbered 0 to 4 from top to bottom. The second number identifies the subcard or PAM number. The PAMs are numbered 0 and 1, with 0 being the left PAM facing the front of the switch. The third number identifies the physical port number on the module. The port numbers always begin at 0 and are numbered from the left port to the right port, facing the front of the switch. The number of additional ports (/1, /2, and so on) depends on the number of ports available on the module.
Interface ports maintain the same port ID regardless of whether other modules are installed or removed. However, when you move a module to a different slot, the first number in the address changes to reflect the new slot number.
For example, on a four-port 155 UTP PAM in chassis slot 1 in PAM slot 0, the address of the left port is 1/0/0 and the address of the right port is 1/0/3. If you remove the four-port 155 UTP PAM from slot 1 and install it in slot 4, the addresses of those same ports become 4/0/0 and 4/0/3.
You can identify module ports by physically checking the card/sub_card/port location on the front of the switch. You can also use software commands to display information about a specific interface, or all interfaces, in the switch. To display information about every interface, use the show interface command without parameters. To display information about a specific interface, use the show interface command with the interface type and port address in the format show interface atm card/sub_card_num/port_num. This command is described in the LightStream 1010 ATM Switch Command Reference publication.
The PAMs support different media and interface types. The configuration commands used with these different PAMs vary according to PAM type. Refer to the "Configuring the Interface" section of each chapter (appropriate to the PAM you are installing) for basic configuration commands.
For complete PAM configuration information, refer to the publications LightStream 1010 ATM Switch Software Configuration Guide and the LightStream 1010 ATM Switch Command Reference.
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