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This chapter describes how to remove port adapters from supported platforms and also how to install new or replacement port adapters. This chapter contains the following sections:
•Port Adapter Removal and Installation
•Connecting Port Adapter Cables
Each port adapter circuit board is mounted to a metal carrier and is sensitive to electrostatic discharge (ESD) damage.
Note When a 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 installed 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.
Figure 3-1 Handling a Port Adapter
The Cisco 7200 series routers, Cisco 7200 VXR routers, Cisco 7201 router, Cisco 7301 router, and the Cisco 7401ASR router support the online insertion and removal (OIR) of all port adapter modules. You do not have to power down routers when removing and replacing port adapters in the Cisco 7200 series router, Cisco 7200 VXR routers, Cisco 7201 router, Cisco 7301 router, or Cisco 7401ASR router.
For the Cisco 7304 router, you must remove the Cisco 7304 PCI port adapter carrier card before removing or replacing port adapters.
For Cisco 7500 series routers, you must remove the VIP before removing and replacing port adapters.
For Cisco 7600 series routers, you must remove the FlexWAN module before removing or replacing port adapters.
Note As you disengage the port adapter from the router or switch, OIR administratively shuts down all active interfaces in the port adapter.
OIR allows you to install and replace port adapters and service adapters (carrier cards, VIPs and FlexWAN modules) while the router is operating; you do not need to notify the software or shut down the system power, although you should not run traffic through the port adapter you are removing while it is being removed. OIR is a method that is seamless to end users on the network, maintains all routing information, and preserves sessions.
Note After you replace port adapters several times using OIR, SRAM on the routers becomes fragmented. When this happens, the system might not be able to find enough contiguous SRAM to complete initialization at bootup, and you might get an error message that there is not enough memory. If you have been using the OIR feature numerous times and you get a memory error message during initialization of a PA-A6, we recommend that you power off and restart the system.
The following is a functional description of OIR for background information only; for specific procedures for installing and replacing a PA-A6 in a supported platform, refer to the "Port Adapter Removal and Installation" section.
Each PA-A6 has a bus connector that connects it to the router. The connector has a set of tiered pins in three lengths that send specific signals to the system as they make contact with the port adapter. The system assesses the signals it receives and the order in which it receives them to determine if a port adapter is being removed from or introduced to the system. From these signals, the system determines whether to reinitialize a new interface or to shut down a disconnected interface.
Specifically, when you insert a port adapter, the longest pins make contact with the port adapter first, and the shortest pins make contact last. The system recognizes the signals and the sequence in which it receives them.
When you remove or insert a port adapter, the pins send signals to notify the system of changes. The router then performs the following procedure:
1. Rapidly scans the system for configuration changes.
2. Initializes newly inserted port adapters or administratively shuts down any vacant interfaces.
3. Brings all previously configured interfaces on the port adapter back to their previously installed states. Any newly inserted interface is put in the administratively shutdown state, as if it was present (but not configured) at boot time. If a similar port adapter type is reinserted into a slot, its ports are configured and brought online up to the port count of the originally installed port adapter of that type.
Note Before you begin installation, read Chapter 2, "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:
•If a port adapter lever or other retaining mechanism (for example, port adapter latch) 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.
•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 illustrations in the "Port Adapter Removal and Installation" section.
In this section, the illustrations that follow give step-by-step instructions on how to remove and install port adapters. Although the procedures may refer to a particular type of port adapter, the steps are the same for installing and removing all types of port adapters. This section contains the following illustrations:
•Cisco 7200 Series Routers and Cisco 7200 VXR Routers—Removing and Installing a Port Adapter
•Cisco 7201 Router—Removing and Installing a Port Adapter
•Cisco 7301 Router—Removing and Installing a Port Adapter
•Cisco 7304 PCI Port Adapter Carrier Card—Removing and Installing a Port Adapter
•Cisco 7401ASR Router—Removing and Installing a Port Adapter
•Cisco 7500 Series Routers—Removing and Installing a Port Adapter
•Cisco 7600 Series Routers—Removing and Installing a Port Adapter
Warning Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing. Statement 1034
You can install one single-width port adapter in a Cisco 7304 PCI port adapter carrier card. This section provides step-by-step instructions for removing and installing a port adapter in a Cisco 7304 PCI port adapter carrier card.
Note If the Cisco 7304 PCI port adapter carrier card is still in the router, you must remove the port adapter carrier card before removing a port adapter.
To remove and install a port adapter in a Cisco 7304 PCI port adapter carrier card, refer to Figure 3-2 and do the following:
Step 1 To remove the port adapter from the Cisco 7304 PCI port adapter carrier card, turn the port adapter lock from its locked and horizontal position shown in A of Figure 3-2 to its unlocked and vertical position shown in B of Figure 3-2.
Step 2 Ensure that the cables are disconnected from the port adapter before removing the Cisco 7304 PCI port adapter carrier card from the chassis.
Step 3 Grasp the handle of the port adapter and pull the port adapter from the Cisco 7304 PCI port adapter carrier card.
Step 4 To insert the port adapter in the Cisco 7304 PCI port adapter carrier card, locate the guide rails inside the Cisco 7304 PCI port adapter carrier card that hold the port adapter in place. They are at the top left and top right of the port adapter slot and are recessed about an inch, as shown in C of Figure 3-2.
Step 5 Carefully slide the port adapter in the Cisco 7304 PCI port adapter carrier card until the port adapter makes contact with the port adapter interface connector. When fully seated, the port adapter front panel should be flush with the face of the Cisco 7304 PCI port adapter carrier card.
Step 6 After the port adapter is properly seated, turn the port adapter lock to its locked and horizontal position, as shown in A of Figure 3-2.
Figure 3-2 illustrates how to remove and install a port adapter in a Cisco 7304 PCI port adapter carrier card.
Figure 3-2 Cisco 7304 PCI Port Adapter Carrier Card—Port Adapter Removal and Installation
You must remove the versatile interface processor (VIP) from the chassis before removing the port adapter from the VIP or installing the port adapter in the VIP.
The PA-A6 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. Be sure to remove the dust covers from each connector before installing new cables.
To connect an ATM E3 or T3 port to the network, use the following procedure:
Step 1 Attach the appropriate coaxial cable directly to the receptacle on the router. (See Figure 3-3.) For cable information, see Table 1-3 on page 1-5.
Step 2 Attach the network end of the coaxial cable to the external E3 or T3 equipment.
Figure 3-3 Attaching a PA-A6 Interface Cable—Coaxial Cable Connector Shown
To connect an ATM OC-3c/STM-1 port to the network, use the following procedure:
Step 1 Attach the appropriate optical fiber cable directly to the receptacle on the router. (See Figure 3-4.) For cable information, see Table 1-3 on page 1-5.
Step 2 Attach the network end of the cable to an external DSU (an ATM network).
Figure 3-4 Attaching a PA-A6 Interface Cable—Duplex Cable Connector Shown
Note Figure 3-4 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-A6.