Doc. No.
78-4343-02
Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
Product Numbers: GSR12-CSC=, GSR12-SFC=
Document Order Number: DOC-784343=
Thisdocumentcoverstheinstallationandreplacementofclockandschedulercardsandswitchfabric
cards in the Cisco 12012 Gigabit Switch Router (GSR). The Cisco 12012 is a member of the
Cisco 12000 series of Internet routing products. The Cisco 12012 is aimed at scaling the Internet and
enterprise backbones to speeds of OC-3/STM-1 (155 Mbps), OC-12/STM-4 (622 Mbps), and
OC-48/STM-16 (2.4 Gbps). The Cisco 12012 is built around a high-speed switching fabric that is
scalable from 5 to 60 Gbps, providing high-performance to support Internet Protocol (IP) -based
local-area networks (LANs) and wide-area networks (WANs).
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All rights reserved.
The sections in this document include the following:
• Product Overview, page 2
• Safety Guidelines, page 4
• Tools and Parts Required, page 6
• Removing and Replacing a Card in the Lower Card Cage, page 7
• Checking the Installation, page 12
• FCC Class A Compliance, page 12
• Cisco Connection Online, page 13
1
Product Overview
Product Overview
The Cisco 12012 has two card cages; the upper card cage and the lower card cage. (Refer to
Figure 1.) The upper card cage has 12 user-configurable slots available for line cards and a route
processor (RP). One additional slot (rightmost slot) in the upper card cage is non-configurable; it is
reserved for an alarm card. The line cards and the RP are not slot dependent; you can install the line
cards and the RP in any of the first 12 available slots.
Figure 1 Cisco 12012 Router—Front View
Top blower module
(behind front cover)
Upper card cage
Air filter tray
0
ACTIVE
CARRIER
EJECT
RX PKT
SLOT-0
SLOT-1
RESET
AUX
1
0
0
ACTIVE
ACTIVE
ACTIVE
CARRIER
CARRIER
CARRIER
RX PKT
RX CELL
RX CELL
CONSOLE
2
ACTIVE
CARRIER
RX PKT
3
LINK
ACTIVE
COLL
TX
CARRIER
RX
RX PKT
MII
RJ-45
ROUTE PROCESSOR
OC-12/STM-4 ATM
Q OC-3/STM-POS
OC-12/STM-4 POS
CRITICAL
MAJOR
MINOR
ACO/LT
ALARM 1 ALARM 2
ENABLED
FAIL
0
CSC
1
0
1
SFC
ALARM
2
Frame
Lower card cage
(behind air filter)
INPUT:
200-240V
~
INPUT:
10 A
200-240V
~
INPUT:
10 A
200-240V
~
50/60 HZ
2000 W
AC
OK
OUTPUT
FAIL
INPUT:
10 A
200-240V
~
50/60 HZ
10 A
2000 W
50/60 HZ
2000 W
AC
OK
AC
OK
OUTPUT
FAIL
OUTPUT
FAIL
Power supply bay
50/60 HZ
2000 W
AC
OK
OUTPUT
FAIL
Bottom blower module
(behind front cover)
H10476
The lower card cage, located behind the air filter,has five horizontal keyed slots for cards containing
theswitchfabriccircuitry. The cards provide the physical pathwayfordatapacketexchangebetween
the line cards in the upper card cage.
There are two types of cards installed in the lower card cage; the clock and scheduler card and the
switch fabric card. The clock and scheduler card is keyed for installation in either of the upper two
slots in the lower card cage. The switch fabric card is keyed for installation in the lower three slots
of the lowercardcage.Thecardsinthe lowercardcagearealsocolor-coded;theclockandscheduler
cards have a light blue label attached and the switch fabric cards have a magenta label attached. You
match the label on the card with a similar color-coded label attached to the slot in the lower card
cage.
2 Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
Clock and Scheduler Card
The Cisco 12012 requires that one clock and scheduler card be installed in the lower card cage. You
can add one additional clock and scheduler card for redundancy and to increase the amount of data
able to be transferred between line cards. The clock and scheduler card contains the following
functionality:
• System clock—Sent to all line cards, RP, and switch fabric cards. The system clock synchronizes
data transfers between line cards or line cards and the RP through the switch fabric. In systems
with redundant clock and scheduler cards, the two system clocks are synchronized. Should one
system clock fail, the other clock takes over.
• Scheduler—Handles requests from the line cards for access to the switch fabric. When the
scheduler receives a request from a line card for switch fabric access, the scheduler determines
when to allow the line card access to the switch fabric.
• Switch fabric—The circuitry that carries the user traffic between line cards or between the RP
and a line card. The switch fabric on the clock and scheduler card is identical to the switch fabric
on the switch fabric card.
Note In a system configured with only one clock and scheduler card, the clock and scheduler card
is installed in the second slot from the top in the lower card cage.
Product Overview
Switch Fabric Card
The switch fabric card contains only the switch fabric circuitry that carries the user traffic between
line cards or between the RP and the line cards. The card receives scheduling information and the
system clock from the clock and scheduler card. The card is keyed to occupy slots 2, 3, and 4 (lower
three slots) in the lower card cage. The system can run without any switch fabric cards installed.
However, if you want to maximize the bandwidth and switching capacity of the system, you must
install three switch fabric cards in the lower card cage.
Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions 3
Safety Guidelines
Lower Card Cage Status LEDs
There are no status LEDs on the clock and scheduler card or switch fabric card, and the lower card
cage slots are hidden behind the air filter. Status for the lower card cage slots is displayed on five
pairs of LEDs located on the alarm card (installed in the rightmost slot in the upper card cage). Each
pair of LEDs displays the status of one slot in the lower card cage (refer to Figure 2) as follows:
• Enabled—When this green LED is on, the card installed in that lower card cage slot is recognized
by the system and functioning correctly. When the LED is off, either the slot is empty or the card
installed in the slot is faulty.
• Fail—When this red LED is on, a fault has been detected in the card installed in that lower card
cage slot. During normal operation, the fail LED should remain off.
Figure 2 Lower Card Cage Status LEDs on the Alarm Card
MAJOR
CRITICAL
Critical, major, and
minor alarm LEDs
MINOR
MAJOR
CRITICAL
Audio alarm
cutoff switch
MINOR
ACO/LT
Pin 25
Pin 1
FAIL
ENABLED
Pin 1
ALARM 2ALARM 1
Pin 25
FAIL
ENABLED
Clock and scheduler card
and switch fabric card LEDs
CSC
SFC
1
0
1
SFC
1
ALARM
2
2
H10900
0
CSC
1
0
0
Safety Guidelines
Before you begin this installation, review the safety guidelines in this section to avoid injuring
yourself or damaging the equipment.
In addition, review the safety warnings listed in the document Regulatory Compliance and Safety
Information for the Cisco 12012 Gigabit Switch Router (Document Number 78-4347-xx) that
supports your Cisco 12012 before installing, configuring, or maintaining the router.
Safety with Equipment
The following guidelines will help ensure your safety and protect the equipment. This list is not
inclusive of all potentially hazardous situations, so be alert.
• Always disconnect all power cords and interface cables before moving the system.
• Keep tools and components away from walk areas.
• Do not work alone if potentially hazardous conditions exist.
• Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe.
• Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
4 Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
Safety with Electricity
The line cards, route processor (RP), switch fabric cards, alarm card, blower modules, and redundant
power supplies are designed to be removed and replaced while the system is operating without
presenting an electrical hazard or damage to the system.
Follow these basic guidelines when working with any electrical equipment:
• Before beginning any procedures requiring access to the interior of the Cisco 12012, locate the
emergency power-off switch for the room in which you are working.
• Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, and missing safety grounds.
• If an electrical accident occurs, proceed as follows:
— Use caution; do not become a victim yourself. Disconnect power to the system.
— If possible, send another person to get medical aid. Otherwise, assess the condition of the
— Determine if the person needs rescue breathing or external cardiac compressions; then take
• Disconnect all power and external cables before installing or removing a router.
Safety Guidelines
victim and then call for help.
appropriate action.
• Never assume that power has been disconnected from a circuit; always check.
• Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe.
• Never install equipment that appears damaged.
In addition, use the guidelines that follow when working with any equipment that is disconnected
from a power source, but still connected to telephone or network wiring:
• Never install telephone wiring during a lightning storm.
• Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
• Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
• Use caution when installing or modifying telephone lines.
Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions 5
Tools and Parts Required
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic boards or components are
handled improperly, can result in intermittent or complete failures.
Following are guidelines for preventing ESD damage:
• Always use an ESD-preventive wrist strap or ankle strap and ensure that it makes good skin
contact.
• When removing or installing a component, connect the equipment end of a ground strap to one
of the two ESD connection sockets on the front edge of the upper card cage or to bare metal on
the frame.
• If you are returning a replaced component to the factory,immediatelyplaceitin a static shielding
bag to avoid ESD damage.
• The wrist strap only protects the board from ESD voltages on the body; ESD voltagesonclothing
can still cause damage.
Caution Forsafety, periodically check the resistance value of the antistatic strap. The measurement
should be between 1 and 10 megohms.
Tools and Parts Required
You need the following tools and parts to install or replace a clock and scheduler card or switch
fabric card:
• 1/4-inch flat-blade screwdriver
• ESD-preventive wrist strap.
• The replacement card, either a clock and scheduler card (Product Number GSR12-CSC=) or a
switch fabric card (Product Number GSR12-SFC=)
6 Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
Removing and Replacing a Card in the Lower Card Cage
Removing and Replacing a Card in the Lower Card Cage
The Cisco 12012 supports up to five cards in the lower card cage; two clock and scheduler cards and
three switch fabric cards. The lower card cage is located directly behind the air filter tray and an air
deflector. Toaccess the lower card cage, you must first lower the air filter tray and raise and secure
the air deflector.
The Cisco 12012 supports online insertion and removal of a switch fabric card in the lower three
slots of the lower card cage, meaning you can remove and replace, or upgrade your system with a
new switch fabric card while the system is powered up.
A clock and scheduler card can be removed and replaced with the system powered up only if there
is a redundant clock and scheduler card installed. If your system is configured with only one clock
and scheduler card, you must power down the system first before removing the clock and scheduler
card. If you are upgrading your system with a second clock and scheduler card, you can install it
while the system is powered up.
Removing a Card From the Lower Card Cage
Perform the following steps to remove a card from the lower card cage:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets
located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 If necessary, power down the Cisco 12012 by turning the DC-input power supply power
switch to OFF (or STANDBY on an AC-input power supply) on each power supply.
Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions 7
Removing and Replacing a Card in the Lower Card Cage
GIGABIT ROUTE PROCESSOR
Q OC-3/STM-POS
OC-12/STM-4 ATM
OC-12/STM-4 POS
ALARM
CSC
0
FAIL
1
0
1
2
ENABLED
SFC
Step 3 To gain access to the lower card cage, loosen the two captive screws on the front of the
air filter tray and pivot the tray down, away from the lower card cage. (Refer to Figure 3.)
Figure 3 Opening the Air Filter Tray
Air deflector
Honeycomb
screen
Captive
screw
Air filter
tray
Air filter
Captive
screw
Caution
To prevent damage, do not place any tools on the air filter tray or in the lower card cage.
Damaging the honeycomb screen on the air filter tray or in the lower card cage could restrict the air
flow causing an overtemperature condition in the Cisco 12012.
H10472
8 Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
Removing and Replacing a Card in the Lower Card Cage
GIGABIT ROUTE PROCESSOR
Q OC-3/STM-POS
OC-12/STM-4 ATM
OC-12/STM-4 POS
ALARM
CSC
0
FAIL
1
0
1
2
ENABLED
SFC
Step 4 To access the cards in the lower card cage, you must first move the air deflector up, out
of the way. Pivot the air deflector up and secure it to the top of the lower card cage by
turning the air deflector latch knob counterclockwise. (Refer to Figure 4.)
Figure 4 Securing the Air Deflector in the Lower Card Cage
Air deflector
latch
Air filter
tray
Air deflector
H10473
Caution
Securing the air deflector in the up position blocks the airflow to the upper card cage. Do
not latch the air deflector in the up position in a running system for extended periods of time. An
overtemperature condition in the upper card cage can occur.
Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions 9
Removing and Replacing a Card in the Lower Card Cage
GIGABIT ROUTE PROCESSOR
Q OC-3/STM-POS
OC-12/STM-4 ATM
OC-12/STM-4 POS
ALARM
CSC
0
FAIL
1
0
1
2
ENABLED
SFC
Step 5 On the card you intend to remove, grasp the card ejector levers and simultaneously pivot
both ejector levers ninety degrees inward (away from the sides of the card cage) to unseat
the card from the backplane connector. (Refer to Figure 5.)
Figure 5 Removing a Switch Fabric Card From the Lower Card Cage
Card ejector lever Card ejector lever
Lower card
cage
Switch fabric
card
Step 6 Touching only the metal card carrier, slide the card out of the lower card cage slot and
place it immediately on an antistatic mat.
If you plan to return the old clock and scheduler card or switch fabric card to the factory,repackage
it in the shipping container you received with the replacement card.
Installing a Card in the Lower Card Cage
Perform the following steps to install a new or replacement card in the lower card cage:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets
located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Select the proper slot in the lower card cage to install the card. Cards installed in the lower
card cage are color-coded and keyed. Clock and scheduler cards are color-coded light
blue and are keyed to install only in the upper two slots. Switch fabric cards are
color-coded magenta and are keyed to install only in the bottom three slots.
Step 3 Grasp the card carrier edge with one hand and place your other hand under the carrier to
support and guide it into a matching color-coded slot. Slide the card halfway into the
lower card cage slot. Avoid touching the card circuitry or any connectors.
H10474
10 Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
Removing and Replacing a Card in the Lower Card Cage
Note When you install a clock and scheduler card or a switch fabric card in the lower
card cage make sure that you keep the card centered in the slot by applying evenpressure
to both sides of the card carrier as you slide it into the slot.
Step 4 Pivotthetwocardejectorleversoutninetydegreesawayfromthesidesofthecardcarrier.
Step 5 Continue sliding the card into the slot until the card ejector levers engage the edges of the
lower card cage slot and both ejector levers begin to pivot.
Note Both types of cards have guide pins that make initial contact with the backplane
connector. After the guide pins make contact, continue pushing on the card carrier until
the card ejector levers both start pivoting, then stop pushing. Use the card ejector levers
to fully insert the card in the backplane connector.
Step 6 Grasp both card ejector levers and pivot them toward the sides of the card cage until they
are parallel to the card carrier edge, to seat the card in the backplane connector. Press on
the ejector levers until they snap into the card carrier.
Step 7 Release the air deflector latch (turn the latch clockwise) and lower the air deflector down
to its stops.
Step 8 Pivottheairfiltertrayupsothatit is flush with the front of the lower card cage and tighten
the two captive screws.
This completes the switch fabric card replacement procedure. Proceed to the “Checking the
Installation” section.
Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions 11
Checking the Installation
Checking the Installation
Complete the following steps to verify that the new clock and scheduler card or switch fabric card
is working properly:
Step 1 Check the following components to make sure that they are secure:
• The cards in the lower card cage are fully seated in their slots and the card ejector
• The air deflector in the lower card cage is down, resting on its stops.
• The air filter tray is up, flush with the front of the card cage assembly, and the two
Step 2 Observe the five pairs switch fabric status LEDs on the alarm card (rightmost slot in the
upper card cage):
• The green enabled LED should be on for all installed clock and scheduler cards and
• The red fail LED should be offfor all installed cards in the lower card cage. If the LED
levers are retracted and latched in the card carriers.
captive screws are tightened.
switch fabric cards. If the LED is off, either the lower card cage slot is empty or the
cardinthatslothasnotbeeninstalledcorrectly. Tryreseatingthecardinthebackplane
connector.
is on, a fault has been detected in the card installed in that slot. The card might not be
installed completely or could have an internal fault. Try reseating the card in its slot.
If that does not resolve the problem, contact your service representative for assistance.
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference, in which
case users will be required to correct the interference at their own expense.
You can determine whether your equipment is causing interference by turning it off. If the
interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices.
If the equipment causes interference to radio or television reception, try to correct the interference
by using one or more of the following measures:
• Turn the television or radio antenna until the interference stops.
• Move the equipment to one side or the other of the television or radio.
• Move the equipment farther away from the television or radio.
• Plug the equipment into an outlet that is on a different circuit from the television or radio. (That
is, make certain the equipment and the television or radio are on circuits controlled by different
circuit breakers or fuses.)
Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval
and negate your authority to operate the product.
12 Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
Cisco Connection Online
CiscoConnectionOnline(CCO)isCiscoSystems’primary, real-time support channel. Maintenance
customers and partners can self-register on CCO to obtain additional information and services.
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added
services to Cisco’s customers and business partners. CCO services include product information,
product documentation, software updates, release notes, technical tips, the Bug Navigator,
configuration notes, brochures, descriptions of service offerings, and download access to public and
authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced
simultaneously: a character-based version and a multimedia version that resides on the World Wide
Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet
e-mail,andit is excellentforquickaccesstoinformationoverlowerbandwidths.TheWWWversion
of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well
as hyperlinks to related information.
You can access CCO in the following ways:
• WWW: http://www.cisco.com
• WWW: http://www-europe.cisco.com
• WWW: http://www-china.cisco.com
Cisco Connection Online
• Telnet: cco.cisco.com
• Modem: From North America, 408 526-8070; from Europe, 33 1 64 46 40 82. Use the
following terminal settings: VT100 emulation; databits: 8; parity: none; stop bits: 1; and
connection rates up to 28.8 kbps.
For a copy of CCO’s Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For
additional information, contact cco-team@cisco.com.
Note If you are a network administrator and need personal technical assistance with a Cisco
product that is under warranty or covered by a maintenance contract, contact Cisco’s Technical
Assistance Center (TAC) at 800 553-2447, 408 526-7209, or tac@cisco.com. To obtain general
information about Cisco Systems, Cisco products, or upgrades, contact 800 553-6387,
408 526-7208, or cs-rep@cisco.com.
This document is to be used in conjunction with the Cisco 12012 Gigabit Switch Router Installation and Configuration Guide.
CCIP, the Cisco Powered Network mark, the Cisco Systems Verified logo, Cisco Unity, Follow Me Browsing, FormShare, Internet Quotient, iQ Breakthrough, iQ Expertise, iQ
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All other trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership relationship
between Cisco and any other company. (0203R)
Copyright © 1997-2002, Cisco Systems, Inc.
All rights reserved.
Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions 13
Cisco Connection Online
14 Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
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