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This chapter describes how to remove the PA-FE-TX and PA-FE-FX port adapter from supported platforms and also how to install a new or replacement port adapter. This chapter contains the following sections:
Each port adapter circuit board is mounted to a metal carrier and is sensitive to electrostatic discharge (ESD) damage.
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Note When a port adapter slot is not in use, a blank port adapter must fill the empty slot to allow the router or switch to conform to electromagnetic interference (EMI) emissions requirements and to allow proper airflow across the port adapters. If you plan to install a new port adapter in a slot that is not in use, you must first remove the blank port adapter. |
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Caution Always handle the port adapter by the carrier edges and handle; never touch the port adapter components or connector pins. (See Figure 3-1.) |

Several platforms support online insertion and removal (OIR) of port adapters; therefore, you do not have to power down routers when removing and replacing a PA-FE-TX and PA-FE-FX on
Cisco 7100 series routers, Cisco 7200 series routers, or Cisco uBR7200 series routers.
Although the VIP and the Catalyst RSM/VIP2 support online insertion and removal, individual port adapters do not. To replace port adapters, you must first remove the VIP or Catalyst RSM/VIP2 from the chassis and then install or replace port adapters as required. If a blank port adapter is installed on the VIP or Catalyst RSM/VIP2 on which you want to install a new port adapter, you must first remove the VIP or Catalyst RSM/VIP2 from the chassis and then remove the blank port adapter.
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Caution To prevent system problems, do not remove port adapters from the VIP2, VIP4, or Catalyst RSM/VIP2 motherboard or attempt to install other port adapters on the motherboard when the system is operating. To install or replace port adapters, first remove the VIP2, VIP4, or Catalyst RSM/VIP2 from its interface processor slot. |
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Note As you disengage the port adapter from the router or switch, online insertion and removal (OIR) administratively shuts down all active interfaces in the port adapter. |
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Note Before you begin installation, read "Preparing for Installation," for a list of parts and tools required for installation. |
Observe the following warnings and cautions when installing or removing port adapters.
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Caution Do not slide a port adapter all the way into the slot until you have connected all required cables. Trying to do so disrupts normal operation of the router or switch. |
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Note If a port adapter lever or other retaining mechanism does not move to the locked position, the port adapter is not completely seated in the midplane. Carefully pull the port adapter halfway out of the slot, reinsert it, and move the port adapter lever or other mechanism to the locked position. |
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Caution To prevent jamming the carrier between the upper and the lower edges of the port adapter slot, and to ensure that the edge connector at the rear of the port adapter mates with the connection at the rear of the port adapter slot, make certain that the carrier is positioned correctly, as shown in the cutaway in the following illustrations. |
In this section, the illustrations that follow give step-by-step instructions on how to remove and install port adapters. This section contains the following sections:

---Removing and Installing a Port Adapter 
---Removing a Port Adapter
---Installing a Port Adapter
---Removing and Installing a Port AdapterTo continue your PA-FE-TX and PA-FE-FX port adapter installation, you must install the interface cables. The following instructions apply to all supported platforms.
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Caution Before you attach your MII transceiver to the MII receptacle on your PA-FE, ensure that your MII transceiver responds to physical sublayer (PHY) address 0 per section 22.2.4.4. "PHY Address" of the IEEE 802.3u specification; otherwise, interface problems might result. Confirm that this capability is available on your MII transceiver with the transceiver vendor or in the transceiver documentation. If a selection for Isolation Mode is available, we recommend you use this setting (if no mention is made of PHY addressing). |
Use the following procedure to connect RJ-45 (or SC for PA-FE-FX) and MII cables:
If you have RJ-45 connections, attach the Category 5 UTP cable directly to the RJ-45 port on the PA-FE. (See Figure 3-2 for PA-FE-TX and Figure 3-3 for PA-FE-FX.) The PA-FE is an end station device and not a repeater. You must connect the PA-FE to a repeater or hub.
If you have an SC connection (PA-FE-FX), attach the cable directly to the SC port on the PA-FE-FX. (See Figure 3-3.) Use either one duplex SC connector or two simplex SC connectors, and observe the correct relationship between the receive (R) and transmit (T) ports on the PA-FE-FX and your repeater.
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Note Each PA-FE-FX or PA-FE-TX can have either an MII attachment or an RJ-45 (or SC) attachment, but not both simultaneously. The MII and RJ-45 (or SC) receptacles represent two physical connection options for one Fast Ethernet interface. |


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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. |
Step 2 For the PA-FE-TX, attach the ferrite bead to the RJ-45 cable (at either end), as shown in Figure 3-4.
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Caution The ferrite bead prevents electromagnetic interference (EMI) from affecting the PA-FE-TX-equipped system and is a required component for proper system operation. |

Step 3 Attach the network end of your RJ-45 (or SC) or MII cable to your 100BaseT transceiver, switch, hub, repeater, DTE, or other external 100BaseT equipment.
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Note After your MII transceiver is connected and the PA-FE interface is configured as up, you can verify that your MII transceiver responds to physical sublayer (PHY) address 0 by disconnecting the transceiver from the MII receptacle; if the PA-FE interface goes down, then your MII transceiver responds to PHY address 0. |
This completes the PA-FE port adapter cable installation.
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Posted: Fri Apr 28 08:43:17 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.