Cisco 7200 Series and the PA-4B-U

This chapter provides information on the PA-4B-U port adapter and its use in Cisco 7200 series routers. This chapter contains the following sections:

Installation Overview

Depending on your circumstances, you might need to install a new port adapter in a Cisco 7200 series router or replace a failed port adapter in the field. In either case, no tools are necessary; all port adapters available for the Cisco 7200 series connect directly to the router midplane and are locked into position by a port adapter lever. When removing and replacing a port adapter, you will need an antistatic mat onto which you can place a removed port adapter and an antistatic container into which you can place a failed port adapter for shipment back to the factory.

Note Cisco 7200 series routers support online insertion and removal (OIR); therefore, you do not have to power down Cisco 7200 series routers when removing and replacing a PA-4B-U.

When a port adapter slot is not in use, a blank port adapter must fill the empty slot to allow the router 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 a blank port adapter.

Port Adapter Locations in Cisco 7200 Series Routers

In Cisco 7200 series routers, port adapter slots are numbered from the lower left to the upper right, beginning with port adapter slot 1 and continuing through port adapter slot 2 for the Cisco 7202, slot 4 for the Cisco 7204 and Cisco 7204VXR, and slot 6 for the Cisco 7206 and Cisco 7206VXR. Port adapter slot 0 is reserved for the optional Fast Ethernet port on the I/O controller if present.

Note The I/O controller is available with or without a Fast Ethernet port. You can install both I/O controller types in all Cisco 7200 series routers; however, when you install an I/O controller with a Fast Ethernet port in a Cisco 7202, the system software automatically disables the port.

Figure 3-1 shows a Cisco 7206 with port adapters installed and an I/O controller with a Fast Ethernet port. Not shown are the Cisco 7202, which has two port adapter slots, the Cisco 7204 and Cisco 7204VXR, which have four port adapter slots, and the Cisco 7206VXR, which has six port adapter slots. The PA-4B-U can be installed in any available port adapter slot in Cisco 7200 series routers.

Figure 3-1: Cisco 7200 Series Port Adapters---Cisco 7206

Removing a Port Adapter

Use the following procedure to remove a port adapter from a Cisco 7200 series router:

Step 1 Attach an ESD-preventative wrist strap between you and an unfinished chassis surface.

Step 2 Disconnect all cables from the port adapter.

Step 3 Place the port adapter lever for the desired port adapter slot in the unlocked position. The port adapter lever remains in the unlocked position. (See Figure 3-2.)

Figure 3-2: Placing the Port Adapter Lever in the Unlocked Position---Cisco 7206

Step 4 Grasp the handle on the port adapter and pull the port adapter from the midplane and out of the chassis slot.

Note

Caution
Always handle the port adapter by the carrier edges and handle; never touch the port adapter's components or connector pins. (See Figure 3-3.)

Figure 3-3: Handling a Port Adapter

Step 5 Place the port adapter on an antistatic surface with its components facing upward, or in a static shielding bag. If the port adapter will be returned to the factory, immediately place it in a static shielding bag.

This completes the procedure for removing a port adapter from a Cisco 7200 series router.

Installing a Port Adapter

Use the following procedure to install a new port adapter in a Cisco 7200 series router:

Step 1 Attach an ESD-preventative wrist strap between you and an unfinished chassis surface.

Step 2 Use both hands to grasp the port adapter by its metal carrier edges and position the port adapter so that its components are downward. (See Figure 3-3.)

Step 3 Align the left and right edge of the port adapter metal carrier between the guides in the port adapter slot. (See Figure 3-4.)

Figure 3-4: Aligning the Port Adapter Metal Carrier Between the Slot Guides---Cisco 7206

Step 4 With the metal carrier aligned in the slot guides, gently slide the port adapter halfway into the slot.

Caution
Do not slide the port adapter all the way into the slot until you have connected all required cables. Trying to do so will disrupt normal operation of the router.

Step 5 With the port adapter halfway in the slot, connect all required cables to the port adapter.

Step 6 After connecting all required cables, carefully slide the port adapter all the way into the slot until you feel the port adapter's connectors make contact with the midplane.

Step 7 After feeling the connectors make contact, move the port adapter lever to the locked position. (Figure 3-5 shows the port adapter lever in the locked position.)

Note

Figure 3-5: Placing the Port Adapter Lever in the Locked Position---Cisco 7206

This completes the procedure for installing a new port adapter in a Cisco 7200 series router.

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