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This chapter describes how to remove the PA-A3 port adapter from supported platforms, how to install a new or replacement PA-A3, and how to connect interface cables.
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-A3 in Cisco 7200 series routers or Cisco uBR7200 series routers.
Although the VIP2, the VIP4, and the Catalyst RSM/VIP2 support online insertion and removal, individual port adapters do not. To replace port adapters, you must first remove the VIP2, VIP4, 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 VIP2, VIP4, or Catalyst RSM/VIP2 on which you want to install a new port adapter, you must first remove the VIP2, VIP4, 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 tools and equipment 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 in each of the following supported platforms:
To connect an ATM E3 or T3 port to the network, use the following procedure:
Step 2 Attach the network end of the coaxial cable to the external E3 or T3 equipment.
The PA-A3-OC3SMI (OC-3c/STM-1 single-mode intermediate reach) and PA-A3-OC3MM (OC-3c/STM-1 multimode) interfaces provide an interface to ATM switching fabrics for transmitting and receiving data at rates of up to 155 Mbps bidirectionally. The single-mode intermediate reach and multimode interfaces connect to the SONET/SDH, 155-Mbps multimode or single-mode optical fiber.
For SONET/SDH multimode and single-mode connections, use one duplex SC connector or two simplex SC connectors. The simplex and duplex SC connectors are shipped with removable dust covers on each connector. These cables are not available from Cisco.
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Warning Class 1 laser product. |
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Warning Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to laser radiation and do not stare into the open aperture. |
To connect an ATM OC-3c/STM-1 port to the network, use the following procedure:
Step 2 Attach the network end of the cable to an external DSU (an ATM network).
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Note Figure 3-3 shows a cable with one duplex SC connector; however, you could also use two cables with one simplex SC connector on each. If you do use separate cables with single SC connectors, you must observe the proper relationship between the transmit (TX) and receive (RX) receptacles on the PA-A3. |
This completes the procedure for attaching an interface cable to the PA-A3. Proceed to "Configuring the PA-A3," to configure the interface on your PA-A3.
Posted: Fri May 26 10:30:22 PDT 2000
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