Removing and Installing Port Adapters
This chapter describes how to remove the Cisco PA-5EFL 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 an ST Fiber-Optic Cable
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 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.
When powering off the router, wait a minimum of 30 seconds before powering it on again.
Handling Port Adapters
Always handle the port adapter by the carrier edges and handle; never touch the port adapter components or connector pins. (See
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-5EFL port adapter on Cisco 7100 series routers, Cisco 7200 series routers, Cisco uBR7246 series routers, or the Cisco 7301 router.
Although the VIP supports online insertion and removal, individual port adapters do not. To replace port adapters, you must first remove the VIP from the chassis and then install or replace port adapters as required. If a blank port adapter is installed on the VIP in which you want to install a new port adapter, you must first remove the VIP from the chassis and then remove the blank port adapter.
To prevent system problems, do not remove port adapters from the VIP 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 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 module while traffic is flowing through the ports can cause system disruption. Once the module is inserted, the ports can be brought back up.
Note As you disengage the module from the router or switch, online insertion and removal (OIR) administratively shuts down all active interfaces in the module.
OIR allows you to install and replace 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 module 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 module in a supported platform, refer to the "Port Adapter Removal and Installation" section.
Each module 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 module. The system assesses the signals it receives and the order in which it receives them to determine if a module 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 module, the longest pins make contact with the module 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 module, 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 module 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 module type is reinserted into a slot, its ports are configured and brought online up to the port count of the originally installed module 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.
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.
To prevent jamming the carrier between the upper and 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.
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.
Warning Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing.
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:
•Cisco 7200 Series—Removing and Installing a Port Adapter
•Cisco 7100 Series—Removing and Installing a Port Adapter
•Cisco uBR7200 Series—Removing a Port Adapter
•Cisco uBR7200 Series—Installing a Port Adapter
•Cisco 7301 Router—Removing and Installing a Port Adapter
•VIP—Removing and Installing a Port Adapter
Cisco 7100 Series—Removing and Installing a Port Adapter
Cisco 7200 Series—Removing and Installing a Port Adapter
Cisco uBR7200 Series—Removing a Port Adapter
Cisco uBR7200 Series—Installing a Port Adapter
Cisco 7301 Router—Removing and Installing a Port Adapter
VIP—Removing and Installing a Port Adapter
Connecting an ST Fiber-Optic Cable
On a single PA-5EFL you can use up to five pairs of ST fiber-optic connections. The PA-5EFL port adapter is an end station device and not a repeater; you must connect the PA-5EFL to a 10Base-FL repeater or hub. ST-type fiber-optic cables are not available from Cisco Systems; they are available from outside commercial cable vendors.
Connect ST fiber-optic cables to the PA-5EFL port adapter as follows:
Step 1 Attach the RX multimode fiber-optic cable directly to the RX port on the PA-5EFL. (See Figure 3-2.)
Note Port adapters have a handle attached, but it is not shown in to allow a full view of the detail on each port adapter's faceplate.
Step 2 Attach the TX multimode fiber-optic cable directly to the TX port on the PA-5EFL port adapter. (See Figure 3-2.)
Figure 3-2 Connecting PA-5EFL Port Adapter ST Cable Pairs—Front View
Step 3 Connect a PA-5EFLport adapter RX port to the appropriate TX port of the repeater, hub, DTE, or other external 10Base-FL equipment.
Step 4 Connect a PA-5EFL port adapter TX port to the appropriate RX port of the repeater, hub, DTE, or other external 10Base-FL equipment.
Step 5 Repeat Steps 1 and 4 for each additional PA-5EFL interface connection you require.
This completes the procedure for attaching a multimode fiber-optic cable to the PA-5EFL port adapter. Proceed to "Configuring the PA-5EFL Port Adapter."