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This chapter describes how to remove the PA-MC-E3 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-E3 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 VIP 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 VIP 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 illustrations:
---Removing a Port Adapter
---Installing a Port Adapter
---Removing and Installing a Port AdapterThis section describes the procedures for attaching coaxial cables between the PA-MC-E3 and your external E3 equipment. Use only 75-ohm, RG-59 coaxial cables for all E3 connections. (For specific cable requirements and options, refer to the "Cables, Connectors, and Pinouts" section.)
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Note You must attach the ferrite sleeves (included with the PA-MC-E3 and shown in the "Cables, Connectors, and Pinouts" section) the 75-ohm coaxial cables that you supply and plan to use for your E3 connections. Attach each ferrite sleeve as close as possible to the port adapter end of each 75-ohm coaxial cable. (See Figure 3-2.) We strongly recommend that you fasten together your transmit and receive cables along their entire length, as shown in the "Cables, Connectors, and Pinouts" section. Doing so 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 has ferrite sleeves already attached; this cable pair is available from Cisco Systems as Product Number CAB-ATM-DS3/E3. (See Figure 3-2.) |
Each E3 link requires separate receive and transmit connections to your external E3 equipment.
Connect the 75-ohm coaxial cables to the PA-MC-E3 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 the PA-MC-E3 as indicated in Step 2. |
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Note The MC-E3 port adapter contains an internal strapping option that you can remove if you require isolation between the receive connection's outer shield and ground. |
Step 2 Attach the network ends of your two 75-ohm coaxial cables to your external E3 equipment as follows:
This completes the procedures for PA-MC-E3 installation and 75-ohm coaxial cable attachment. Proceed to "Configuring the PA-MC-E3" to configure the interfaces on the PA-MC-E3.
Posted: Tue Jul 18 13:45:59 PDT 2000
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