Inverse Multiplexing over ATM Port Adapter Installation and Configuration
Removing and Installing the PA-A3 IMA 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

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 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

FlexWAN Module—Removing and Installing a Port Adapter

Connecting the PA-A3-IMA Interface Cables


Removing and Installing Port Adapters


This chapter describes how to remove the PA-A3-IMA port adapter from the supported platforms and how to install a new or replacement port adapter. This chapter includes the following sections:

Handling Port Adapters

Online Insertion and Removal

Warnings and Cautions

Port Adapter Removal and Installation

Connecting the PA-A3-IMA Interface Cables

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 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 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-A3-IMA in the Cisco 7100 series routers, Cisco 7200 series routers, Cisco 7200 VXR routers, Cisco 7201 routers Cisco 7301 router, or Cisco 7401ASR router.


Note PA-A3-8E1 IMA is not supported on the Cisco 7401ASR router.


Although the Cisco 7304 PCI port adapter carrier card, VIP, and FlexWAN module support online insertion and removal, individual port adapters do not. To replace port adapters, you must first remove the Cisco 7304 PCI port adapter carrier card, VIP, or FlexWAN module from the chassis and then install or replace port adapters as required. If a blank port adapter is installed on the Cisco 7304 PCI port adapter carrier card, VIP, or FlexWAN module on which you want to install a new port adapter, you must first remove the Cisco 7304 PCI port adapter carrier card, VIP, or FlexWAN module from the chassis, and then remove the blank port adapter.


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


OIR allows you to install and replace port adapters 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 port adapter 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 instruction on how to remove and install port adapters. This section contains the following illustrations:

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 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

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 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

FlexWAN Module—Removing and Installing a Port Adapter

Connecting the PA-A3-IMA Interface Cables

On a single PA-A3-IMA, all eight RJ-45 connections can be used as ATM connections, or a combination of two or more can be used as links in an IMA group. To meet VCCI Class II EMI requirements, you must use foil twisted-pair cables with RJ-45 connectors.


Note Foil twisted-pair cables with RJ-45 connectors are not available from Cisco Systems; they are available from outside commercial cable vendors.


To connect the foil twisted-pair cables to the PA-A3-IMA for use as an ATM interface, follow these steps:


Step 1 Attach the foil twisted-pair cable directly to one of the RJ-45 ports on the PA-A3-IMA.

Step 2 Attach the network end of your foil twisted-pair cable to your external equipment.

Step 3 Repeat Step 1 and Step 2 for each of the remaining ATM interfaces you want to install.


To connect the foil twisted-pair cables to the PA-A3-IMA as a link in an IMA group, proceed as follows:


Step 1 Configure the IMA groups on both routers. (See the "Configuring Ports on the PA-A3-IMA" section on page 4-10 to determine which ports on the PA-A3-IMA will be connected as IMA links).

Step 2 Attach the foil twisted-pair cable directly to the first RJ-45 port of the PA-A3-IMA that is to be configured as an IMA link in an IMA group. (See Figure 3-3.)

Figure 3-3 Connecting IMA Foil Twisted-Pair Cables


Note Port adapters have a handle attached, but this handle is not shown in Figure 3-3 to allow a full view of the detail on the faceplate.


Step 3 Attach the other end of the foil twisted-pair cable to the first port of the router on the far end of the IMA group.

Step 4 Repeat Step 2 and Step 3 for each of the remaining IMA links in the IMA group.