Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory

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.

Figure 5 : Cisco 4500, Cisco 4700 and Older Cisco 4500-M Component Tray

Figure 6 : Cisco 4700-M and Newer Cisco 4500-M Component Tray

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.

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.

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

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. Connect the equipment end of the wrist strap to the metal back plate of the chassis, 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. Connect the equipment end of the wrist strap to the metal back plate of the chassis, 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.

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 21.

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. Connect the equipment end of the wrist strap to the metal back plate of the chassis, 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 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. Connect the equipment end of the wrist strap to the metal back plate of the chassis, 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.)

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 Avoid damaging the SIMMs and SIMM socket by 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 21.

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. Connect the equipment end of the wrist strap to the metal back plate of the chassis, 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 11) or by adding a second SIMM to the empty socket (labeled "System Flash Memory 1" in Figure 8 on page 11).

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 11.

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 11.) 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

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 4 Check the alignment of each SIMM to make sure that it is straight and that the alignment holes are lined up with the plastic socket guides.

If you have completed all memory upgrade procedures, proceed to the section "Replacing Network Processor Modules" on page 21.

Replacing the ROM Monitor EPROM Device

The ROM monitor is stored in an EPROM device on the Cisco 4500 and Cisco 4500-M. (See Figure 8 on page 11.) Two versions of the label of the ROM monitor EPROM are shown in Figure 16.

Figure 16 : Cisco 4500 and Cisco 4500-M ROM Monitor Memory Devices

To upgrade the ROM monitor, replace the old EPROM labeled "SIERRA ROM MON" with the new EPROM labeled "ROM MON V5.2(4)."

Take the following steps to replace the ROM monitor EPROM.

Step 1 Open the chassis and expose the ROM monitor EPROM following the procedures in the sections "Accessing the Internal Components of the Router" on page 5 and "Removing Network Processor Modules" on page 8.

Step 2 With the ROM monitor EPROM in location U68 exposed (see Figure 8), gently extract the old EPROM with an EPROM extraction tool or a small flat-blade screwdriver and set the old ROM monitor EPROM aside.

Step 3 Insert the new ROM monitor EPROM in the empty socket in the orientation shown in Figure 8, being careful not to crush any of the bottom pins. To straighten out a bent pin, use needlenose pliers. Align the notch in the new ROM monitor EPROM with the notch in the ROM socket, ignoring the orientation of the label.

Caution The notch on the EPROM must match the notch on the socket on the card. Installing the components backward will damage them.

Proceed to the next section, "Replacing Network Processor Modules."

Replacing Network Processor Modules

Take the following steps to replace a network processor module:

Step 1 Hold the network processor module by its handle, align it with the grooves in the chassis (not shown) and over its connector, and push it lightly against the chassis wall. (See Figure 7.)

Step 2 Gently, without bending the connector pins, push the network processor module into place, inserting the male network processor module connector into the female network processor module connector on the motherboard.

Step 3 Replace the module mounting screw on the end of the network processor module. (See Figure 7.)

Step 4 If the module has external rear mounting screws to attach the network processor module to the rear of the chassis, replace the screws at this time.

Caution Do not overtorque the module mounting screw. The network processor module or the underlying motherboard could be damaged. The maximum screw torque is 7 inch-lb.

Replacing the Component Tray

Take the following steps to replace the component tray in the chassis shell:

Step 1 Reinsert the component tray into the shell, pushing on the back of the tray while at the same time pressing on the chassis release screw (see Figure 3) with the thumb of your right hand.

Step 2 Retighten the chassis release screw.

Replacing the Final Connections to the Router

Take the following steps to make the final connections to the router:

Step 1 If you have an AC-powered system, plug the system power cord into a 3-terminal, single-phase power source that provides power within the acceptable range (100--240 VAC, 50--60 Hz, 3.0--1.5 A).

Step 2 If you have a DC-powered system, rewire the DC-input power supply (40 to 72 VDC) to the terminal block. The proper wiring sequence is ground to ground, positive to positive, and negative to negative. (See Figure 17.) After connecting the DC power cables, use a screwdriver to reinstall the terminal block cover.

Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position.

Step 3 Turn ON the system power switch. The power LED on the front should go ON.

Step 4 Check the OK LED on the right side of the front panel (see Figure 1) to verify that it goes ON after a few seconds delay when booting.

Figure 17 : DC-Input Power Supply Connections

Testing Your Installation

Test your installation by rebooting the system. When you power up a system in which one or more of the boot ROMs was incorrectly inserted, the system will not boot into the ROM monitor or the operating system mode.

If you suspect that your boot ROMs were inserted incorrectly, reopen the chassis, locate the affected boot ROM and remove it, straighten its pins, reinsert the boot ROM, and try booting again.

This completes upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M memory.

Cisco Connection Online

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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, Internet e-mail, and fax download options, and is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.

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For a copy of CCO's Frequently Asked Questions (FAQ), contact ccohelp@cisco.com. For additional information, contact ccoteam@cisco.com.