Cisco 4000 Series Quick start guide

1
Doc. No.
Copyright © 1996
Cisco Systems, Inc.
All rights reserved.
Upgrading Cisco 4500, Cisco 4500-M,
Cisco 4700, and Cisco 4700-M Memory
78-1469-04
Product Numbers:
This publication describes the upgrade and replacement of main, shared, Flash, and ROM monitor
memory in the Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M. Read this entire
publication before upgrading your system. This publication contains the following sections which
step you through the upgrade procedures:
•Memory Systems
•Safety Recommendations
•Safety with Electricity
•Required Tools
•Accessing the Internal Components of the Router
•Removing Network Processor Modules
•Memory Replacement Procedures
•Replacing Network Processor Modules
•Replacing the Component Tray
•Replacing the Final Connections to the Router
•Testing Your Installation
•Cisco Connection Online
MEM-NP16M-R4-P=
MEM-NP32M-P=
MEM-NP64M-P=
MEM-NP8F-P=
MEM-NP8F-R4-P=
MEM-NP16F-R4-P=
MEM-NP8S-R4-P=
MEM-NP16S-P= 17-2062-01 (ROM Monitor 5.1)

2Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Memory Systems
Note This publication is for the router installer, who should be familiar with electronic circuitry
and wiring practices and have experience as an electronic or electromechanical technician.
When you upgrade Flash memory, a Trivial File Transfer Protocol (TFTP) file server must be
available that has the desired Cisco Internetwork Operating System (Cisco IOS) software
image—Release 10.2(6) or later. These Cisco IOS files can then be downloaded into the upgraded
Flash memory using TFTP. Consult your network administrator about the availability of TFTP file
servers and Cisco IOS software on your network.The router will not be fully functional without the
system software and running configuration. Consult the appropriate Cisco IOS software publication,
which is available on the Cisco Connection Documentation Enterprise Series CD or as a printed
document, for TFTP procedures.
Note One upgraded router can serve as a TFTP server to upgrade other routers.
Figure 1 shows the front view of a Cisco 4000 series router.
Figure 1 Front View of a Cisco 4000 Series Router
Memory Systems
The Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M memory systems (see Figure 2)
have the following functions:
•Main memory—Stores the running configuration and routing tables. The Cisco IOS software
executes from main memory.
•Shared memory—Used for packet buffering by the router’s network interfaces.
•NVRAM—Stores the system configuration file and the virtual configuration register.
•Flash memory—Stores the operating system software image and the boot helper software. The
boot helper image allows you to boot the router when Flash memory does not contain a valid
system image.
Network activity LEDs Run LED
H2427
2
DATA
OK
3
DATA
OK
1
DATA
OK
Health LEDs Power LED
POWER
OK
SERIES

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 3
Safety Recommendations
•Erasable programmable read-only memory (EPROM)–based memory—In the Cisco 4500,
Cisco 4500-M, Cisco 4700, and Cisco 4700-M routers only the ROM monitor image is
EPROM-based. The ROM monitor permits you to boot the Cisco IOS image from Flash memory
if a boot helper image is not present in boot Flash memory.
Figure 2 Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory Systems and Software
Images
Table 1 lists the Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M processor and memory
specifications.
Table 1 Processor and Memory Specifications
Warning Before working on a chassis or working near power supplies, unplug the power cord on
AC units; disconnect the power at the circuit breaker on DC units.
Caution To avoid damaging electrostatic discharge (ESD)–sensitive components, be sure you
have discharged all static electricity from your body before opening the chassis. Before performing
the procedures described in this document, review the following sections “Safety
Recommendations” and “Safety with Electricity.”
Safety Recommendations
Follow these guidelines to ensure general safety:
•Keep the chassis area clear and dust-free during and after installation.
•Put the removed chassis cover in a safe place. Keep tools away from walk areas where you or
others could fall over them.
1. The Orion microprocessor is based on the MIPS R4400 and is pin-compatible.
2. DRAM = dynamic random-access memory.
3. NVRAM = nonvolatile random-access memory.
4. ROM = read-only memory.
Description Cisco 4500 Cisco 4500-M Cisco 4700 Cisco 4700-M
Processor 100-MHz IDT Orion
RISC1100-MHz IDT Orion
RISC 133-MHz IDT Orion RISC 133-MHz IDT Orion RISC
Main memory (DRAM2) 8 or 32 MB 8, 16, or 32 MB 16 or 32 MB 16, 32, or 64 MB
Shared memory (DRAM) 4 or 16 MB 4, 8, or 16 MB 4, 8, or 16 MB 4, 8, or 16 MB
Flash memory 4, 8, 16, 32, or 64 MB 4, 8, 16, 32, or 64 MB 4, 8, 16, 32, or 64 MB 4, 8, 16, 32, or 64 MB
NVRAM3128 KB 128 KB 128 KB 128 KB
Boot ROM4128 to 512 KB 128 to 512 KB 128 to 512 KB 128 to 512 KB
Boot Flash 4, 8, or 16 MB 4 to 16 MB 4 to 16 MB 4 to16 MB
EPROM-based Flash memory based
ROM monitor
Boot helper
(xboot)
H6389
Cisco IOS

4Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Safety with Electricity
•Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf and roll
up your sleeves.
•Wear safety glasses when working under any conditions that might be hazardous to your eyes.
•Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe.
Safety with Electricity
Warning Before working on equipment that is connected to power lines, remove jewelry
(including rings, necklaces, and watches). Metal objects will heat up when connected to power and
ground and can cause serious burns or can weld to the terminals.
Follow these guidelines when working on equipment powered by electricity:
•Locate the emergency power-off switch in the room in which you are working. Then, if an
electrical accident occurs, you can act quickly to shut the power off.
•Before working on the system, turn off the power and unplug the power cord.
•Disconnect all power before doing the following:
—Installing or removing a chassis
—Working near power supplies
—Accessing internal components
•Never assume that power is disconnected from a circuit. Always check.
•Do not work alone if potentially hazardous conditions exist.
•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.
—Turn off power to the system.
—If possible, send another person to get medical aid. Otherwise, assess the victim’s condition
and then call for help.
—Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
Preventing Electrostatic Discharge Damage
ESD can damage equipment and impair electrical circuitry. It occurs when electronic printed circuit
cards are improperly handled and can result in complete or intermittent failures.

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 5
Required Tools
Always follow ESD prevention procedures when removing and replacing cards. Ensure that the
chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that
it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely
channel unwanted ESD voltages to ground. To properly guard against ESD damage and shocks, the
wrist strap and cord must operate effectively.
If no wrist strap is available, ground yourself by touching the metal part of the chassis.
Required Tools
The following tools are required to remove and upgrade main, shared, Flash, and ROM monitor
memory.
•ESD cord and wrist strap
•Number 1 and Number 2 Phillips screwdrivers
In addition, the ROM monitor device upgrade requires the following:
•EPROM removal tool or small flat-blade screwdriver
Proceed to the next section, “Accessing the Internal Components of the Router.”
Accessing the Internal Components of the Router
You must open the router chassis to gain access to the router’s internal components: the network
processor modules, boot ROMs, and jumpers.
Refer to the previous section, “Required Tools,” for the tools needed for the following procedures.
Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact
with telephone-network voltages.
Warning Do not work on the system or connect or disconnect cables during periods of lightning
activity.
Warning Do not touch the power supply when the power cord is connected. For systems with a
power switch, line voltages are present within the power supply even when the power switch is off
and the power cord is connected. For systems without a power switch, line voltages are present
within the power supply when the power cord is connected.
Removing the Component Tray Procedure
Some Cisco 4000 series routers have a safety latch tab on the chassis that affects removing the
component tray. (See Figure 3 and Figure 4.)
If you have a chassis with a safety latch tab, follow the procedure in the next section “Removing the
Component Tray from a Chassis with a Safety Latch.”
If you have a chassis without a safety latch tab, follow the procedure in the section “Removing the
Component Tray from a Chassis without a Safety Latch.”

6Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Accessing the Internal Components of the Router
Removing the Component Tray from a Chassis with a Safety Latch
Take the following steps to remove the component tray from a chassis with a safety latch:
Step 1 Turn OFF the system power.
Step 2 Attach your ESD-preventive wrist strap.
Step 3 Remove all network and power cables.
Step 4 If you have a DC-powered router, take these steps to remove the power cables:
Warning Before performing any of the following procedures, ensure that power is removed from
the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that
services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of
the circuit breaker in the OFF position.
•Use a screwdriver to loosen the captive installation screws on the terminal block cover.
•Lift and remove the terminal block cover.
•Use a screwdriver to remove the three power leads from the terminal block in the
following order: negative, positive, then ground.
Step 5 Loosen the nonremovable chassis release screw on the rear panel of the chassis. (See
Figure 3.)
Step 6 Pull on the handle located on the upper right corner of the chassis to slide the component
tray out of the chassis shell until the safety latch catches. (See Figure 3.)
Warning Before releasing the safety latch, support the component tray from underneath, either on
your work surface or with your hands, to prevent personal injury. (See Figure 3.)
Figure 3 Component Tray Removal for Chassis with a Safety Latch
Rear of the chassis Handle
AUX CONSOLE
INPUT 100-240VAC 50/60HZ 3.0-1.5 AMPS
Safety latch tab
Hand supporting 
component tray
H1965
Chassis shell
Chassis release 
screw

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 7
Accessing the Internal Components of the Router
Step 7 Support the component tray with one hand, push down on the safety latch tab, and pull the
component tray out the rest of the way.
Step 8 Set the component tray on your work surface.
Proceed to the next section, “Removing Network Processor Modules.”
Removing the Component Tray from a Chassis without a Safety Latch
Take the following steps to remove the component tray from a chassis without a safety latch:
Step 1 Turn OFF the system power.
Step 2 Attach your ESD-preventive wrist strap.
Step 3 Remove all network and power cables.
Step 4 If you have a DC-powered router, take these steps to remove the power cables:
Warning Before performing any of the following procedures, ensure that power is removed from
the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that
services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of
the circuit breaker in the OFF position.
•Use a screwdriver to loosen the captive installation screws on the terminal block cover.
•Lift and remove the terminal block cover.
•Use a screwdriver to remove the three power leads from the terminal block in the
following order: negative, positive, then ground.
Step 5 Loosen the nonremovable chassis release screw on the rear panel of the chassis. (See
Figure 4.)
Figure 4 Component Tray Removal for Chassis without a Safety Latch
AUX CONSOLE
INPUT 100-240VAC 50/60HZ 3.0-1.5 AMPS
H2899
Rear of the chassis Handle
Support the component
tray with your hand
Chassis shell
Chassis release 
screw

8Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Removing Network Processor Modules
Warning Support the component tray from underneath, either on your work surface or with your
hands, to prevent it from falling. (See the hand in Figure 4.)
Step 6 Pull on the handle located on the upper right corner of the chassis to slide the component
tray out of the chassis shell while you support the component tray with one hand.
Step 7 Set the component tray on your work surface.
Proceed to the next section, “Removing Network Processor Modules.”
Removing Network Processor Modules
If you are replacing shared memory single in-line memory modules (SIMMs), you must first remove
the network processor modules. Follow the steps in this section to remove a network processor
module.
Caution Some network processor modules are attached to the rear of the chassis with two external
screws. On modules with external rear mounting screws, which include the Fiber Distributed Data
Interface (FDDI) module, these screws must be removed before the module can be safely lifted out
of the chassis, otherwise damage to the module will occur. Other types of modules may not have the
two external rear mounting screws attached to the chassis.
Step 1 With the component tray in front of you (as shown in Figure 5 and Figure 6), remove the
module mounting screw from the network processor module, and the two external rear
mounting screws (not shown) if the module has them, and set the screws aside.
Note The Cisco 4500, Cisco 4700, and older versions of the Cisco 4500-M use very similar
motherboards in the component tray. The motherboard was changed when the Cisco 4700-M was
introduced, and the new motherboard is also used in newer versions of the Cisco 4500-M.
Step 2 To lift the module out of its connector after removing the module mounting screws, grasp
the network processor module handle and pull straight up. (See Figure 7.)
Caution Do not rock the handle up and down when handling the network processor module, and
do not exert any side-to-side pressure because the handle might work loose and damage the network
processor module.
Figure 7 shows the network processor module and connector locations.

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 9
Removing Network Processor Modules
Figure 5 Cisco 4500, Cisco 4700 and Older Cisco 4500-M Component Tray
U63
U64
J6
U61
LEDs
Module 
mounting 
screws
Token Ring module
Dual serial module
Ethernet module
Module cutaway view
128-pin module connector
H2690
Module mounting 
screw
Front of chassis
Module handle
Module handle
Module handle LED
U68
ROM monitor

10 Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Removing Network Processor Modules
Figure 6 Cisco 4700-M and Newer Cisco 4500-M Component Tray
U63
U64
J6
U61
LEDs
Module 
mounting 
screws
Token Ring module
Dual serial module
Ethernet module
Module cutaway view
128-pin module connector
H6669
Module mounting 
screw
Front of the chassis
Module handle
Module handle
Module handle LED
U78
ROM monitor
J1

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 11
Memory Replacement Procedures
Figure 7 Network Processor Module and Connector Locations
Memory Replacement Procedures
There are two DRAM systems in Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M
routers. One is the shared memory, which is the interface that the network processor modules send
data to or transmit data from, and the other is the primary or main memory, which is reserved for the
CPU. The ROM monitor is stored in an EPROM device on the motherboard. (See Figure 8.) In
addition, these routers have two Flash memory systems: one for the Cisco IOS software image and
one for the boot helper image. (See Figure 2.)
Caution To avoid damaging ESD-sensitive components, observe all ESD precautions. To avoid
damaging the underlying system card, avoid using excessive force when you remove or replace
SIMMs.
The Cisco 4500 and Cisco 4500-M main memory upgrade requires replacing the main memory
configuration of 8 MB (two 4-MB SIMMs) with two 8-MB SIMMs (Cisco 4500-M only) or two
16-MB SIMMs (Cisco 4500 and Cisco 4500-M).
The Cisco 4700 and Cisco 4700-M main memory upgrade requires replacing the main memory
configuration of 16 MB (two 8-MB SIMMs) with two 16-MB SIMMs for 32 MB (Cisco 4700 and
Cisco 4700-M) or with two 32-MB SIMMs for 64 MB (Cisco 4700-M).
The Cisco 4500 and Cisco 4500-M shared memory upgrade permits you to replace the shared
memory SIMM with one 16-MB SIMM (Cisco 4500 and Cisco 4500-M) or one 8-MB SIMM
(Cisco 4500-M only).
The Cisco 4700 and Cisco 4700-M shared memory upgrade permits you to replace the shared
memory SIMM with one 16-MB SIMM or one 8-MB SIMM.
H1048a
Female module
connector on the 
motherboard
Male module
connector
(cutaway view)
Chassis
wall
Safety latch
Module mounting
screw
Module handles

12 Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Memory Replacement Procedures
Upgrading the Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Flash memory requires
replacing or adding to the Flash memory configuration of 4 MB with 8, 16, 32, or 64 MB of Flash
memory.
Figure 8 shows the memory component and jumper locations in the Cisco 4500, Cisco 4700, and
older versions of the Cisco 4500-M.
Figure 8 Cisco 4500, Older Cisco 4500-M , and Cisco 4700 Memory Component Locations
Figure 9 shows the memory component and jumper locations in the Cisco 4700-M and newer
versions of the Cisco 4500-M.
Main memory SIMM 
sockets with correct 
SIMM orientation 
Front of chassis
Motherboard
Shared-memory
SIMM and socket
H2449
System Flash memory 1
J1 J6
System Flash memory 0
RxBoot Flash memory
Jumper in place enables 
writing to Flash memory
Jumped pins
1 and 2
ROM monitor
U68
NVRAM

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 13
Memory Replacement Procedures
Figure 9 Cisco 4700-M and Newer Versions of the Cisco 4500-M Memory Component Locations
Replacing Main Memory SIMMs
SIMMs are manufactured with a polarization notch to prevent them from being installed backward.
Figure 10 shows the polarization notch and locations of the alignment holes on a main memory
SIMM card. The main memory SIMM cards are installed with the connector edge down and the
component side facing in, as shown in the upper right corner of Figure 8 and Figure 9.
Figure 10 Main Memory SIMM
Main memory SIMM sockets
with correct SIMM orientation
Front of chassis
Motherboard Shared-memory
SIMM and socket
H6665
System Flash memory 1
J5
J1
J6
System Flash memory 0
RxBoot Flash memory
Jumper in place enables 
writing to Flash memory
Jump pins
1 and 2
Jump pins 1 and 2
ROM monitor
U78
NVRAM
Alignment holes
Connector edge
Polarization notch
H2407

14 Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Memory Replacement Procedures
Removing Main Memory SIMMs
Take the following steps to remove main memory SIMMs:
Step 1 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin.
Connecttheequipmentendofthewriststraptothemetalbackplateofthechassis,avoiding
contact with the connectors.
Step 2 On the motherboard, locate the main memory SIMM card sockets shown in the upper right
of Figure 8.
Caution Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be
damaged by mishandling.
Step 3 Remove one SIMM at a time, beginning with the SIMM farthest from the edge of the
motherboard.
Step 4 To lift the SIMM out of its socket, pull the locking spring clips on both sides outward and
tilt the SIMM free of the clips. (See Figure 11.)
Step 5 Hold the SIMM by the edges with your thumb and index finger and lift it out of the socket.
Place the removed SIMM in an antistatic bag to protect it from ESD damage.
Step 6 Repeat Step 2 through Step 5 for each main memory SIMM card.
Proceed to the next section, “Installing Main Memory SIMMs.”
Installing Main Memory SIMMs
Take the following steps to install main memory SIMMs:
Step 1 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin.
Connecttheequipmentendofthewriststraptothemetalbackplateofthechassis,avoiding
contact with the connectors.
Step 2 On the motherboard, locate the main memory SIMM card sockets shown in the upper right
of Figure 8. All the sockets should be empty. If they are not, follow the steps in the previous
section “Removing Main Memory SIMMs.”
Caution Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be
damaged by mishandling.
Step 3 Hold the SIMM with the polarization notch on the right and the component side away from
you with the connector edge at the bottom. (See Figure 10.)
Step 4 Beginning with the SIMM nearest the edge of the motherboard, insert the main memory
SIMM card at a 45-degree angle and rock it into its vertical position (see Figure 12), using
the minimum amount of force required. When the SIMM is properly seated, the socket
guide posts will insert through the alignment holes, and the locking springs will click into
place.
Step 5 Ensure that each SIMM is straight and that the alignment holes (as shown in Figure 10) line
up with the plastic socket guides.

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 15
Memory Replacement Procedures
Figure 11 Removing Main Memory SIMMs
Caution You will feel some resistance, but do not use excessive force on the SIMM and do not
touch the surface components to avoid damaging them.
Step 6 Repeat Step 2 through Step 5 for each main memory SIMM.
If you have completed all SIMM replacement procedures, proceed to the section “Replacing
Network Processor Modules” on page 22.
2. Push the SIMM down and forward.
The socket guide posts 
release through the SIMM 
holes (on both sides).
3.
Pull the locking spring clips
(on both sides) outward to 
enable the SIMM to rock 
forward. The SIMM will 
not release unless 
the clips have cleared 
the back of the SIMM.
1. SIMM 
polarization
notch
Top view
Front of the chassis
H1153
2. Push the SIMM down andforward.
Side view
Pull the locking spring clips
outward to enable the SIMM
to rock forward. The SIMM will 
not release unless the clips have
cleared the back of the SIMM.
1.
The socket guide posts release
through the SIMM holes
(on both sides).
3.

16 Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Memory Replacement Procedures
Figure 12 Installing Main Memory SIMMs
Removing and Replacing Shared Memory SIMMs
Take the following steps to replace the shared memory SIMMs:
Step 1 Unplug the chassis power cord and network connections.
Step 2 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin.
Connecttheequipmentendofthewriststraptothemetalbackplateofthechassis,avoiding
contact with the connectors.
Step 3 Remove the chassis cover as described in the section “Accessing the Internal Components
of the Router” on page 5.
2. Push the SIMM down and back.
1. Insert the SIMM into the socket at an angle 45°from vertical.
The socket guide posts insert
through the SIMM holes
(on both sides).
3.
The locking spring will
clip the back of the SIMM 
when it is fully installed
(on both sides).
4.
H1152
Top view
Front of the chassis
Polarization
notch
1. Insert the SIMM into the socket at an angle 45°from vertical.
The socket guide posts insert
through the SIMM holes
(on both sides).
3.
The locking spring will
clip the back of the SIMM 
when it is fully installed
(on both sides).
4.
Side view
2. Push the SIMM down and back.

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 17
Memory Replacement Procedures
Step 4 Remove and safely store all the network processor modules present, as described in
“Removing Network Processor Modules” on page 8, for later reinstallation.
Step 5 Locate the shared memory SIMM card socket on the left of the motherboard, as shown in
Figure 8.
Step 6 Turn the chassis so you are facing the rear of the chassis.
Step 7 The SIMMs are held in place at each end by small metal spring clasps. To remove a shared
memory SIMM, push the two metal clasps apart. Angle the SIMM upward and pull it out.
Caution Do not exert pressure on the components on the SIMM surface because you might damage
them. The sides of the SIMM must clear the metal clasps before the SIMM can be safely removed.
Step 8 Place the removed SIMM in an antistatic bag to protect it from ESD damage.
Step 9 Repeat Step 7 and Step 8 for each SIMM.
Step 10 Proceed to the next section, “Inserting Shared Memory SIMMs.”
Inserting Shared Memory SIMMs
Take the following steps to insert shared memory SIMMs:
Step 1 Unplug the chassis power cord and network connections.
Step 2 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin.
Connecttheequipmentendofthewriststraptothemetalbackplateofthechassis,avoiding
contact with the connectors.
Step 3 Remove the chassis cover as described in the section “Accessing the Internal Components
of the Router” on page 5.
Step 4 On the left of the motherboard (as aligned in Figure 8), find the shared memory SIMM card
socket locations. All the sockets should be empty. If they are not, remove the shared
memory SIMMs following the procedures in the previous section, “Removing and
Replacing Shared Memory SIMMs.”
Step 5 Turn the chassis so that the side with the shared memory SIMM cards is closest to you.
Caution Handle SIMMs by the card edges only. SIMMs are sensitive components and can be
shorted by mishandling.
Step 6 Hold the SIMM with the connector edge at the bottom, component side facing you, and the
polarization notch on the left. (See Figure 13.)

18 Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Memory Replacement Procedures
Figure 13 Inserting Shared Memory SIMMs
Step 7 To insert a SIMM, angle it into position, then carefully push down and back on the edges,
holding each edge so that it snaps securely in place. (See Figure 13.) When it snaps into
place, the two metal clips fit over the edge of the SIMM and hold the SIMM horizontally.
Caution AvoiddamagingtheSIMMsandSIMMsocketby handling them roughly. The SIMMs are
also sensitive to ESD damage.
Step 8 Check that the SIMM is straight and that the holes are aligned with the socket guide posts.
(See Figure 13.)
If you have completed all SIMM replacement procedures, proceed to the section “Replacing
Network Processor Modules” on page 22.
Polarization notch
Push the SIMM down and back
The socket guide posts
insert through the SIMM holes
(on both sides)
Push the SIMM down and back
Side view, SIMM inserted
Top view
H1052a

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 19
Memory Replacement Procedures
Removing the Cisco 4500 and Cisco 4500-M Boot Helper Flash Memory SIMMs
The boot helper image (Rxboot image) is stored in Flash memory on the Cisco 4500 and
Cisco 4500-M. Take the following steps to replace the 4-MB SIMM with an 8 or 16-MB SIMM.
(See Figure 14.)
Figure 14 Removing the Boot Helper Flash Memory SIMM
Step 1 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin.
Connecttheequipmentendofthewriststraptothemetalbackplateofthechassis,avoiding
contact with the connectors.
Step 2 On the Cisco 4500 and Cisco 4500-M motherboard, locate the SIMM card socket for
RxBoot Flash memory. (See Figure 8.)
Caution Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be
damaged by mishandling.
Step 3 To lift the SIMM out of its socket, pull the locking spring clips on both sides outward and
tilt the SIMM free of the clips. (See Figure 14.)
Proceed to the next section “Installing Boot Helper Flash Memory SIMMs.”
Installing Boot Helper Flash Memory SIMMs
You upgrade boot helper Flash memory by replacing the existing SIMM (labeled “System Flash
Memory 0” in Figure 8 on page 12) or by adding a second SIMM to the empty socket (labeled
“System Flash Memory 1” in Figure 8 on page 12).
Take the following steps to add Flash memory SIMMs and refer to Figure 8 for the SIMM locations.
Step 1 On the Cisco 4500 and Cisco 4500-M motherboard, locate the Flash memory SIMM
sockets shown in the lower right corner of Figure 8 on page 12.
Polarization notch
System-code SIMM card
H2462
Pull the tabs away from
each other with your 
thumbs, bracing your 
forefingers against the 
posts. Raise the SIMM 
to a vertical position.

20 Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Memory Replacement Procedures
Caution Handle SIMMs by the edges only. SIMMs are ESD-sensitive components and can be
damaged by mishandling.
Step 2 Hold the SIMM with the polarization notch on the right and the component side away from
you with the connector edge at the bottom.
Step 3 Referring to Figure 15, insert the Flash memory SIMM at a 45-degree angle and rock it into
its vertical position. (See Figure 8 on page 12.) When the SIMM is properly seated, the
socket guide posts will insert through the alignment holes, and the locking springs will
click into place. Use the minimum amount of force required.
Figure 15 Inserting Flash Memory SIMMs
The socket guide posts insert
through the SIMM holes
(on both sides).
3.
The locking spring will
clip the front side of the SIMM 
when it is fully installed
(on both sides).
4.
H2474
Polarization
notch
1. Insert the SIMM into the socket at an angle 45°from vertical.
The socket guide posts insert
through the SIMM holes
(on both sides).
3.
The locking spring will
clip the front side of the SIMM 
when it is fully installed
(on both sides).
4.
Side view
2. Push the SIMM down and back.
2. Push the SIMM down and back.
1. Insert the SIMM into the socket at an angle 45°from vertical.
Top view
Front of the chassis