PA-E3 Serial Port Adapter Installation and Configuration
Removing and Installing the PA-E3 Port Adapter
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Removing and Installing Port Adapters

Table Of Contents

Removing and Installing Port Adapters

Handling Port Adapters

Online Insertion and Removal

Warnings and Cautions

Port Adapter Removal and Installation

Catalyst RSM/VIP2—Removing and Installing a Port Adapter

Catalyst 6000 Family FlexWAN Module—Removing and Installing a Port Adapter

Cisco 7100 Series Routers—Removing and Installing a Port Adapter

Cisco 7200 Series Routers and Cisco 7200 VXR Routers—Removing and Installing a Port Adapter

Cisco uBR7200 Series Routers—Removing a Port Adapter

Cisco uBR7200 Series Routers—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

VIP—Removing and Installing a Port Adapter

Connecting a PA-E3 Cable


Removing and Installing Port Adapters


This chapter describes how to remove the PA-E3 port adapter from supported platforms and also how to install a new or replacement port adapter. This chapter contains the following sections:

Handling Port Adapters

Online Insertion and Removal

Warnings and Cautions

Port Adapter Removal and Installation

Connecting a PA-E3 Cable

Handling Port Adapters

Each port adapter circuit board is mounted to a metal carrier and is sensitive to electrostatic discharge (ESD) damage.


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.



Caution When powering off the router, wait a minimum of 30 seconds before powering it on again.


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.)

Figure 3-1 Handling a Port Adapter

Online Insertion and Removal

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-E3 or PA-2E3 in the Cisco 7100 series routers, Cisco 7200 series routers, Cisco 7200 VXR routers, Cisco uBR7200 series routers, Cisco 7201 router, Cisco 7301 router, or Cisco 7401ASR router.

Although the Catalyst RSM/VIP2, FlexWAN module, Cisco 7304 PCI port adapter carrier card, and VIP support OIR, individual port adapters do not. To replace port adapters in the Catalyst 5000 switches, Catalyst 6000 switches, Cisco 7304 router, or Cisco 7000 or 7500 series routers, you must first remove the Catalyst RSM/VIP2, FlexWAN module, Cisco 7304 PCI port adapter carrier card, or VIP from the chassis and then install or replace port adapters as required. If a blank port adapter is installed on the Catalyst RSM/VIP2, FlexWAN module, Cisco 7304 PCI port adapter carrier card, or VIP on which you want to install a new port adapter, you must first remove the Catalyst RSM/VIP2, FlexWAN module, Cisco 7304 PCI port adapter carrier card, or VIP from the chassis, and then remove the blank port adapter.


Caution To prevent system problems, do not remove port adapters from the Catalyst RSM/VIP2, FlexWAN module, Cisco 7304 PCI port adapter carrier card, or VIP or attempt to install other port adapters on the motherboard when the system is operating. To install or replace port adapters, first remove the Catalyst RSM/VIP2, FlexWAN module, Cisco 7304 PCI port adapter carrier card, or VIP from its interface processor slot.

It is wise to gracefully shut down the system before removing a port adapter that has active traffic moving through it. Removing a port adapter while traffic is flowing through the ports can cause system disruption. Once the port adapter is inserted, the ports can be brought back up.


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, FlexWAN modules, and VIPs) 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.

The following is a functional description of OIR for background information only; for specific procedures for installing and replacing a PA-E3 or PA-2E3 in a supported platform, refer to the "Port Adapter Removal and Installation" section.

Each port adapter 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 state. 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.


Warnings and Cautions

Observe the following warnings and cautions when installing or removing port adapters.


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.


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.



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 illustrations in the "Port Adapter Removal and Installation" section.


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.


Port Adapter Removal and Installation

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:

Catalyst RSM/VIP2—Removing and Installing a Port Adapter

Catalyst 6000 Family FlexWAN Module—Removing and Installing a Port Adapter

Cisco 7100 Series Routers—Removing and Installing a Port Adapter

Cisco 7200 Series Routers and Cisco 7200 VXR Routers—Removing and Installing a Port Adapter

Cisco uBR7200 Series Routers—Removing a Port Adapter

Cisco uBR7200 Series Routers—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

VIP—Removing and Installing a Port Adapter

Catalyst RSM/VIP2—Removing and Installing a Port Adapter

Catalyst 6000 Family FlexWAN Module—Removing and Installing a Port Adapter

Cisco 7100 Series Routers—Removing and Installing a Port Adapter

Cisco 7200 Series Routers and Cisco 7200 VXR Routers—Removing and Installing a Port Adapter

Cisco uBR7200 Series Routers—Removing a Port Adapter

Cisco uBR7200 Series Routers—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

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.


Warning When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the Cisco 7304 PCI Port Adapter Carrier 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.


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 If the Cisco 7304 PCI Port Adapter Carrier Card is still in the router, you must remove the Cisco 7304 PCI Port Adapter Carrier Card before removing a port adapter.

Step 2 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 3 Grasp the handle of the port adapter and pull the port adapter from the Cisco 7304 PCI Port Adapter Carrier Card. (You have already disconnected the cables from the port adapter when removing 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

Cisco 7401ASR Router—Removing and Installing a Port Adapter

VIP—Removing and Installing a Port Adapter

Connecting a PA-E3 Cable

On a PA-E3(=) you use only one coaxial cable, and on a PA-2E3(=) you can use one or two coaxial cables.


Caution You can attach only an EIA/TIA-612 and EIA/TIA-613 75-ohm coaxial cable to the PA-E3 installed in your router. Attaching a compact serial cable of another interface type to the port adapter could damage your router or the hardware at the network end of the cable.

To connect a coaxial cable to a PA-E3, follow these steps:


Step 1 Attach the coaxial cable directly to the receptacle on the PA-E3 and tighten the BNC connectors. (See Figure 3-3.)


Note Port adapters have a handle attached, but this handle is not shown to allow a full detailed view of the faceplate.

When attaching the cable receptacle on the PA-E3, use the cable-management bracket that shipped with your router for extra strain relief.


Figure 3-3 Connecting a PA-E3 Compact Coaxial Cable—Front View (Shown Without Handle)

Step 2 Attach the network end of your coaxial cable to your DSU, CSU, DTE, or other external E3 equipment and tighten the BNC connectors.


This completes the procedure for attaching a PA-E3 compact coaxial cable to the PA-E3.