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This chapter describes how to remove the PA-MC-T3 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-MC-T3 on 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 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 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. |
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Warning When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the card. Some platforms have an ESD connector for attaching the wrist strap. Do not directly touch the midplane or backplane with your hand or any metal tool, or you could shock yourself. |
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 illustrations:
---Removing a Port Adapter
---Installing a Port Adapter
To continue your PA-MC-T3 installation, you must attach the port adapter cables. The instructions that follow apply to all supported platforms.
Use only 75-ohm RG-59 coaxial cables for these connections. You must supply the cables; they do not ship with the PA-MC-T3. For specific cable requirements and options, see the "Cables, Connectors, and Pinouts" section of the "Overview" chapter.
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Note You must attach the ferrite sleeves (included with the PA-MC-T3 and shown in and ) to 75-ohm coaxial cables that you plan to use for your connection. Attach each ferrite sleeve as close as possible to the port adapter end of each 75-ohm coaxial cable (as shown in Figure 1-3). We strongly recommend that you fasten together your transmit and receive cables along their entire length (as shown in ), which reduces the effects of EMI. You can use standard heat-activated shrink tubing or cable ties for this purpose. You can also use a 75-ohm coaxial cable pair that is available from Cisco Systems (product number CAB-ATM-DS3/E3). |
Each T3 link requires separate receive and transmit connections to your external T3 equipment.
Connect the 75-ohm coaxial cables to the PA-MC-T3 as follows:
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Caution To prevent system problems and to maintain the proper cable connection sequences, connect the RX and TX ports on your PA-MC-T3 as indicated in Step 2. |
Step 2 Attach the network ends of your two 75-ohm coaxial cables to your external T3 equipment as follows:
This completes the procedure for attaching 75-ohm coaxial cables to a PA-MC-T3. Proceed to Chapter 4 "Configuring the PA-MC-T3" chapter to configure the interfaces on the PA-MC-T3.
Posted: Fri Apr 28 10:11:09 PDT 2000
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