Removing and Installing the PA-POS-1OC3
This chapter describes how to remove the PA-POS-1OC3 from supported platforms, how to install a new or replacement port adapter, and how to connect cables.
This chapter contains the following sections:
•Handling Port Adapters
•Online Insertion and Removal
•Warnings and Cautions
•Port Adapter Removal and Installation
•Connecting PA-POS-1OC3 Interface Cables
•Replacing the SFP Optics Module
Before you begin installation, read the "Required Tools and Equipment" section on page 2-1 for a list of parts and tools required for installation.
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.
When powering off the router, wait a minimum of 30 seconds before powering it on again.
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-POS-1OC3 in the 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.
It is wise to gracefully shut down the system before removing a port adapter or module that has active traffic moving through it. Removing a port adapter or module while traffic is flowing through the ports can cause system disruption. Once the port adapter or module is inserted, the ports can be brought back up.
Note As you disengage the port adapter from the router or switch, online insertion and removal (OIR) administratively shuts down all active interfaces in the port adapter.
OIR allows you to install and replace port adapters or 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.
OIR Functional Description
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 were 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.
Warnings and Cautions
Observe all the 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.
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 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
"Port Adapter Removal and Installation" section.
Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place.
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 in each of the following supported platforms:
•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 Router—Removing and Installing a Port Adapter
For cabling information see the "Connecting PA-POS-1OC3 Interface Cables" section.
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.
When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the 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
Cisco 7401ASR Router—Removing and Installing a Port Adapter
Cisco 7500 Series Routers—Removing and Installing a Port Adapter
Cisco 7600 Series Router—Removing and Installing a Port Adapter
Connecting PA-POS-1OC3 Interface Cables
To continue your PA-POS-1OC3 installation, you must connect the interface cables. The instructions that follow apply to all supported platforms.
Note Optical fiber cables are not available from Cisco Systems; they are available from outside commercial cable vendors. For more information on the cables you should use with this port adapter, see the "Cables and Connectors" section on page 1-7.
Note We strongly recommend cleaning any optical-fiber connectors before making new connections to optical-fiber equipment. For more information, see the Inspection and Cleaning Procedures for Fiber-Optic Connections document at http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml, and the Compressed Air Cleaning Issues for Fiber-Optic Connections at http://www.cisco.com/en/US/tech/tk482/tk611/technologies_white_paper09186a00801b08da.shtml
To connect the cables to the PA-POS-1OC3, attach either one duplex optical fiber cable or two simplex optical fiber cables between the PA-POS-1OC3 interface port on your PA-POS-1OC3 and your network. (See Figure 3-3.)
Make sure that the receive (RX) cable goes to the RX LC-type receptacle and transmit (TX) cable goes to the TX LC-type receptacle on the PA-POS-1OC3.
Figure 3-3 Connecting Simplex or Duplex Optical Fiber Cables to the PA-POS-1OC3
Warning Class 1 laser product. Statement 1008
Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051
Replacing the SFP Optics Module
The following section describes how to remove and install the small form-factor pluggable (SFP) optics modules in the PA-POS-1OC3.
Note The SFP optics modules used with the PA-POS-1OC3 have LC type connectors
The SFP optics modules support online insertion and removal (OIR). However, if the port adapter is already installed in the router and the system is operational, we recommend that you administratively shut down the SFP port before installing a new SFP optics module.
Available Cisco SFP optics modules include the following:
•POM-OC3-MM (short range, multimode fiber)
•POM-OC3-SMIR (intermediate range, single-mode fiber)
•POM-OC3-SMLR (long range, single-mode fiber)
Handling the SFP Optics Module
Before handling the SFP optics module, observe the following guidelines:
•SFP optics modules are static-sensitive. To prevent electrostatic discharge (ESD) damage, follow your normal board- and component-handling procedures.
•SFP optics modules are dust-sensitive. When storing an SFP optics module or when a fiber-optics cable is not plugged into the connector, always keep plugs in the SFP optical bores.
The most common source of contaminants in the optical bores is debris picked up on the ferrules of the optical connectors. For information about inspecting and cleaning fiber optic connections, see the Inspection and Cleaning Procedures for Fiber-Optic Connections document at http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml, and the Compressed Air Cleaning Issues for Fiber-Optic Connections at http://www.cisco.com/en/US/tech/tk482/tk611/technologies_white_paper09186a00801b08da.shtml.
Note We strongly recommend cleaning any optical-fiber connectors before making new connections to optical-fiber equipment.
Removing the SFP Optics Module
The following procedure describes removing the SFP optics module from a vertically or horizontally oriented port adapter slot.
Warning Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040
You can remove and install SFP optics modules with power on to the system; however, we strongly recommend that you do not remove or install an SFP optics module with optical fiber cables attached.
To remove the SFP optics module, perform the following steps:
Step 1 Attach an ESD wrist strap to your wrist and to the ESD connection socket on the chassis or to a bare metal surface on the chassis or frame.
Step 2 Disconnect the network fiber cable from the SFP optics module connector.
Step 3 Remove the SFP optics module from the slot.
a. Using your thumb and forefinger, grip the colored latching band on the front of the SFP optics module.
b. Gently push the latching band back toward the SFP slot. You may hear a click or feel the SFP optics module disengage from the holding latch.
Note Not all SFP optics modules have the same kind of latching mechanism.
c. While still holding the latching band, pull the SFP optics module forward and out of the slot.
Step 4 Set the SFP optics module aside on an antistatic surface.
Installing the SFP Optics Module
Use the following procedure to install the SFP optics modules:
Step 1 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.
Step 2 Verify that you have the correct SFP optics module for your installation.
a. Check the part number and distance information on the SFP optics module label.
b. If the distance information is not on the label, use the show controller pos x/y command to display the information after the SFP optics module is installed. See "Verifying the SFP Optics Module Installation" section for directions.
Step 3 Align the SFP optics module with the slot so that the label is facing away from the handle.
Figure 3-4 Inserting an SFP Optics Module
Step 4 Holding the module at the latching band (with your thumb and forefinger), insert the SFP optics module into the slot on the port adapter.
Step 5 Push the module back into the slot until the latch engages. When fully inserted, only the band around the front of the SFP optics module is visible.
Step 6 Remove the plug from the SFP optical bores and save the plug for future use.
Step 7 Attach the network interface fiber-optics cable, as described in the "Cisco 7500 Series Routers—Removing and Installing a Port Adapter" section.
Verifying the SFP Optics Module Installation
There are two ways that you can verify the SFP installation,
•Check the type of SFP optics module installed using the console.
•Cable the SFP optics module and check the LEDs on the front of the PA-POS-1OC3.
Use this procedure to verify the SFP optics module installation in the PA-POS-1OC3:
Step 1 Verify the type of SFP optics module that is installed, by entering show controller pos x/y
Step 2 Check the text in the output to verify the type of SFP that is installed.
NPE-400#show controller pos 1/0
ipv62tag optimum fs = 0x612C6754, ipv62tagfs = 0x612C6754
SFP is TRP-03L3I1BCS OC3 SM-IR
Framer is PMC PM5379 S/UNI-4x155 1 0
Step 3 Verify that the SFP optics module is functioning, by checking that the LINK LED is green.
Note The green (LINK) LED is turned on only if the cable is connected and the link is up. The orange (ALARM) LED is turned on by the software if there are SONET alarms on the interface.
Step 4 Verify that the cabling is correct—single-mode to single-mode or multimode to multimode.
Note If the wavelength of the SFP optics modules are matched, but different modes are used (multimode to single-mode or vise versa), the SFP optics module functions but not reliably.