Upgrading System Memory in Cisco 3600 Series Routers Product Numbers: MEM3600-4FS=, MEM3600-8FS=, MEM3600-16FS=, MEM3600-32FS=, MEM3620-4D=, MEM3620-8D=, MEM3620-16D=, MEM3631-32CF-INCL, MEM3631-32U64CF, MEM3631-32U128CF, MEM3631-64CF=, MEM3631-128CF=, MEM3631-64D-INCL, MEM3631-64U128D, MEM3631-64U192D, MEM3631-64U256D, MEM3631-64D=, MEM3631-128D=, MEM3640-2X4D=, MEM3640-2X8D=, MEM3640-2X16D=, MEM3640-2X32D=, MEM3660-16D=, MEM3660-32D=, MEM3660-64D=, MEM3660-128D=, BOOT-3600= This document describes how to
Memory Capacities • Memory Configurations, page 3 • Safety Recommendations, page 9 • Tools and Equipment Needed, page 14 • Opening the Router, page 14 • Replacing DRAM and SDRAM, page 18 • Replacing Cisco Flash Memory SIMMs, page 25 • Replacing ROM, page 29 • Closing the Router, page 33 • Replacing Connections to the Router, page 36 • Testing ROM Installation, page 37 • Recovering Cisco Flash Memory and System Images, page 37 • Obtaining Documentation, page 38 • Obtaining Technical
Memory Configurations Memory Configurations For information on configuring dynamic (DRAM and SDRAM) and Cisco Flash memory, see the following sections. Dynamic Memory You can configure DRAM or SDRAM as a mixture of primary or main memory that is reserved for the CPU and shared memory that is used for data transmitted or received by modules and WAN interface cards.
Memory Configurations – Have the same access time (in nanoseconds). • SIMMs in banks 2 and 3 must: – Be the same size (in megabytes), and the same size as or smaller than those in banks 0 and 1 – Have the same access time (in nanoseconds) Thus, only certain combinations of DRAM SIMMs are permitted: • Combinations for 32-bit configurations used in Cisco 3620 routers are shown in Table 2. • Combinations for 32-bit configurations used in Cisco 3640 routers are shown in Table 3.
Memory Configurations Table 3 32-Bit DRAM Configuration for Cisco 3640 Routers Bank 0 (SIMM 0) Bank 1 (SIMM 1) Bank 2 (SIMM 2) Bank 3 (SIMM 3) Total Memory 4 MB 4 MB 8 MB — 16 MB 16 MB — — — 4 MB 16 MB — — 8 MB 8 MB 4 MB — 16 MB 4 MB — — 8 MB 16 MB — — 8 MB 8 MB 8 MB — 16 MB 8 MB — — 8 MB 8 MB 4 MB 8 MB 8 MB 8 MB 8 MB 4 MB 8 MB 8 MB 16 MB — 32 MB 16 MB 16 MB 4 MB — 36 MB 16 MB 16 MB 8 MB — 40 MB 16 MB 16 MB 8 MB 4 MB 44 MB 16 MB 16 MB 4
Memory Configurations Table 4 64-Bit DRAM Configuration for Cisco 3640 Routers (continued) Bank 0 (SIMM 0) Bank 1 (SIMM 1) Bank 2 (SIMM 2) Bank 3 (SIMM 3) Total Memory 16 MB 16 MB 16 MB 16 MB 64 MB 32 MB-Dual — — 32 MB-Dual 32 MB-Dual 4 MB 4 MB 72 MB 32 MB-Dual 32 MB-Dual 8 MB 8 MB 80 MB 32 MB-Dual 32 MB-Dual 8 MB-Dual 8 MB-Dual 32 MB-Dual 32 MB-Dual 16 MB 16 MB 96 MB 32 MB-Dual 32 MB-Dual 32 MB-Dual 32 MB-Dual 128 MB 32 MB-Dual 3 1.
Memory Configurations Table 5 SDRAM Configurations for Cisco 3631 Routers (continued) Bank 0 (DIMM 0) Bank 1 (DIMM 1) Total Memory — 64 MB 96 MB 64 MB — 128 MB — 64 MB 64 MB — 128 MB — 128 MB 128 MB — 64 MB 128 MB 128 MB 64 MB 128 MB 128 MB Table 6 128 MB 160 MB 192 MB 256 MB SDRAM Configurations for Cisco 3660 Routers Bank 0 (DIMM 0) Bank 1 (DIMM 1) Total Memory 2Mx64 2Mx64 32 MB 4Mx64 — 4Mx64 2Mx64 48 MB 4Mx64 4Mx64 64 MB 8Mx64 — 8Mx64 2Mx64 80 MB 8Mx64 4
Memory Configurations Step 1 To see how much Cisco Flash memory is currently installed in your router, enter the show flash command in EXEC mode. You can upgrade Cisco Flash memory by doing either or both of the following: • Cisco 3631: Replace the existing card with one of greater capacity. Note • For instructions on how to install a Cisco Flash memory card, refer to documentation on installing and configuring or formatting Cisco Flash memory, available online at http://www.cisco.
Safety Recommendations Table 7 Cisco Flash Memory SIMM Configurations Router Bank 0 Bank 1 Total Memory All 4 MB — 4 MB 4 MB 4 MB 8 MB 4 MB 8 MB 12 MB 4 MB 16 MB 20 MB 8 MB — 8 MB 8 MB 4 MB 12 MB 8 MB 8 MB 16 MB 8 MB 16 MB 24 MB 16 MB — 16 MB 16 MB 4 MB 20 MB 16 MB 8 MB 24 MB 16 MB 16 MB 32 MB 32 MB 32 MB 64 MB Cisco 3660 Safety Recommendations Follow these guidelines to ensure general safety: • Keep the chassis area clear and dust-free during and after insta
Safety Recommendations Warning Means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device. Waarschuwing Dit waarschuwingssymbool betekent gevaar.
Safety Recommendations Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes.
Safety Recommendations 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.
Safety Recommendations Warning Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.
Tools and Equipment Needed Caution For safety, periodically check the resistance value of the antistatic strap. It should be between 1 and 10 megohms (Mohms). Caution Before opening the chassis, be sure that you have discharged all static electricity from your body and the power is OFF.
Opening the Router Removing the Router Cover (Cisco 3620, Cisco 3631, Cisco 3640) Follow these steps to remove the router cover: Step 1 Locate the appropriate figure for your Cisco router so that you can refer to it in the following steps. (See Figure 1, Figure 2, or Figure 3.
Opening the Router Figure 2 Removing the Cisco 3631 Router Cover 2 68523 1 Figure 3 Removing the Cisco 3640 Router Cover Screw SY ST EM RP H7043 S CO N AU X AC TIV 0 1 2 RE E 3 ADY 1 PC MC IA Step 2 0 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.
Opening the Router Step 3 Warning Turn OFF the power and unplug the power cord. Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device. Step 4 Disconnect all network-interface cables from the rear panel. Step 5 Place the chassis so that the rear panel faces you.
Replacing DRAM and SDRAM Figure 4 Removing the Cisco 3660 Mainboard Tray 1 VCC OK SYSTEM FDX LINK 100Mbps FDX LINK 100Mbps 1 0 SEE MANUAL BEFORE INSTALLATION 0 RC HS RD EN TC LB/CN V0 TD V1 1 HIGH SPEED SERIAL 1HSSI IN USE VIC FXS IN USE VOICE 2V SERIAL 4T ETHERNET 4E SERIAL 3 SERIAL 2 SERIAL 1 SERIAL 0 ETH 3 ETH 2 ETH 1 3 2 1 CN/LP RXC 0 ETH 0 LINK RXD TXC TXD CN/LP RXC RXD TXC TXD CN/LP RXC EN RXD TXC TXD CN/LP RXC RXD TXC 2 ACT TXD 2 3 Caution Step 7
Replacing DRAM and SDRAM Figure 5 DRAM SIMM Locations in the Cisco 3620 Router 1 2 3 H7317 0 DRAM SIMMs Figure 6 DRAM SIMM Locations in the Cisco 3640 Router 1 2 3 H7081 0 DRAM SIMMs Upgrading System Memory in Cisco 3600 Series Routers 78-3636-05 19
Replacing DRAM and SDRAM SIMMs are manufactured with a polarization notch to ensure proper orientation and alignment holes to ensure proper positioning. Figure 7 shows the polarization notch and alignment holes on a SIMM. DRAM SIMMs are installed with the connector edge down and the polarization notch near the front of the chassis. Caution To avoid damaging ESD-sensitive components, observe all ESD precautions.
Replacing DRAM and SDRAM Figure 8 Removing DRAM SIMMs Top view Front of chassis H7038 2. Push the top of the SIMM forward and down. 1. Pull the locking spring clips outward. SIMM polarization notch Step 4 Hold the SIMM by the edges with your thumb and index finger and lift it out of the socket. Place it in an antistatic bag to protect it from ESD damage. Step 5 Repeat Step 3 and Step 4 for each SIMM. Step 6 Install the new SIMMs as described in the next section “Installing DRAM SIMMs.
Replacing DRAM and SDRAM Figure 9 Installing DRAM SIMMs View from front of chassis 1. Insert the SIMM into the socket at an angle from vertical. 2. Push the top of the SIMM down and back. 3. The socket guide posts fit through the holes in the SIMM. H7037 4. The locking springs clip the back of the SIMM. Step 5 Caution Ensure that each SIMM is straight (perpendicular to the socket), and that the alignment holes (see Figure 9) line up with the plastic socket guides on the socket.
Replacing DRAM and SDRAM Figure 10 SDRAM DIMM Locations in the Cisco 3631 Router 68522 0 1 Figure 11 SDRAM DIMM Locations in the Cisco 3660 Router 17337 SDRAM DIMMs 0 1 Upgrading System Memory in Cisco 3600 Series Routers 78-3636-05 23
Replacing DRAM and SDRAM DIMMs are manufactured with polarization notches to ensure proper orientation, and alignment holes to ensure proper positioning. Figure 12 and Figure 13 show the polarization notches and alignment holes on a DIMM.
Replacing DRAM and SDRAM 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 mainboard, locate the SDRAM DIMM sockets. (See Figure 10 or Figure 11.) Caution Step 3 Handle the DIMM by the nonconnector edges only; do not press on the center. Handle carefully.
Replacing Cisco Flash Memory SIMMs Installing SDRAM DIMMs Follow these steps to install SDRAM DIMMs: 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 mainboard, locate the SDRAM DIMM sockets. (See Figure 10 or Figure 11.
Replacing Cisco Flash Memory SIMMs Figure 15 Cisco Flash Memory SIMM Locations on the Cisco 3620 Mainboard 0 H7318 1 Flash memory SIMMs Figure 16 Cisco Flash Memory SIMM Locations on the Cisco 3640 Mainboard 0 H7082 1 Flash memory SIMMs Upgrading System Memory in Cisco 3600 Series Routers 78-3636-05 27
Replacing Cisco Flash Memory SIMMs Figure 17 Cisco Flash Memory SIMM Locations on the Cisco 3660 Mainboard 17340 Flash memory SIMMs 0 1 Removing Cisco Flash Memory SIMMs Caution New Cisco Flash SIMMs are shipped without preinstalled software. Before replacing a Flash memory SIMM, be sure to back up the Cisco IOS image to a TFTP server as directed below.
Replacing Cisco Flash Memory SIMMs Step 4 Remove the SIMM from its socket by pulling the locking spring clips on both sides outward and tilting the SIMM free of the clips. (See Figure 18.) Figure 18 Removing Cisco Flash Memory SIMMs Top view 1. Pull the locking spring clips outward. 2. Push the top of the SIMM forward and down.
Replacing ROM Step 4 Beginning with bank 0, insert the Cisco Flash memory SIMM at an angle by sliding the end with the metal fingers into the socket tilted toward the left side of the chassis at approximately a 45-degree angle to the motherboard. Rock the SIMM into a vertical position and gently push the SIMM until the latches on both sides snap into place. Do not use excessive force.
Replacing ROM 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 backplane of the chassis, avoiding contact with the connectors.
Replacing ROM Figure 21 ROM Location on the Cisco 3640 Mainboard H7083 ROM Figure 22 ROM Location on the Cisco 3660 Mainboard 17341 ROM Step 4 Gently remove the old ROM with the tool listed below, and set the ROM aside: • Cisco 3620 or Cisco 3640: ROM extraction tool or a small flat-blade screwdriver • Cisco 3660: 32-pin PLCC extraction (see Figure 23) Upgrading System Memory in Cisco 3600 Series Routers 32 78-3636-05
Replacing ROM Figure 23 Removing the ROM from the Cisco 3660 Mainboard PLCC extraction tool Angled tips Extraction slots PLCC extraction slot PLCC extraction slot ROM socket 14624 ROM Step 5 Orient and insert the new ROM in its socket, being careful to not bend or crush any of the bottom pins. (See Figure 24.) Straighten any bent pins with a needlenose pliers. Align the notch in the new ROM with the notch in the ROM socket, ignoring the orientation of the label.
Closing the Router Closing the Router Before closing the router, make sure that all cables are securely tucked in, and are not in danger of being stressed or cut.
Closing the Router Figure 26 Replacing the Cisco 3631 Router Cover 1 68524 2 Figure 27 Replacing the Cisco 3640 Router Cover Chassis cover Cover tabs Chassis tabs Cover tabs SY ST EM RP H7044 S CO N AU X AC TIV 0 1 2 RE E 3 ADY Side tabs Front panel 1 PC MC IA 0 Chassis bottom Step 3 Hold the cover so that the tabs on the cover align with the chassis bottom.
Closing the Router Step 5 Lower the front of the cover onto the chassis, making sure that the side tabs on the cover fit inside the chassis side panels, and the chassis tabs fit under the cover side panels. Step 6 With a number-2 Phillips screwdriver, fasten the cover with the three screws you set aside in Step 6 of the “Removing the Router Cover (Cisco 3620, Cisco 3631, Cisco 3640)” section on page 14. Step 7 Reinstall the chassis on a rack, wall, or desktop.
Replacing Connections to the Router Figure 28 Replacing the Cisco 3660 Mainboard Tray 1 2 17336 3 4 Step 3 Slide the mainboard tray into the chassis until firm contact is made with the backplane. (See Figure 28 part 2.) Step 4 Push the levers at the lower corners of the mainboard inward. (See Figure 28 part 3.) Step 5 With a number-2 Phillips screwdriver, tighten the two captive screws previously loosened in Step 5 of the “Removing the Mainboard Tray (Cisco 3660)” section on page 16.
Testing ROM Installation Warning Read the installation instructions before you connect the system to its power source. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device. Step 1 Replace all network connections.
Obtaining Documentation Using the xmodem Command If the system image is erased from Cisco Flash memory, the xmodem command establishes a connection between a console and the router console or auxiliary port for disaster recovery. xmodem [filename]—Establishes an xmodem connection between the console and the router. The optional parameter filename specifies the source file containing the Cisco IOS image. Other options are: -c—Use cyclic redundancy check (CRC-16). -y—Use Ymodem transfer protocol.
Obtaining Technical Assistance Documentation Feedback If you are reading Cisco product documentation on Cisco.com, you can submit technical comments electronically. Click Leave Feedback at the bottom of the Cisco Documentation home page. After you complete the form, print it out and fax it to Cisco at 408 527-0730. You can e-mail your comments to bug-doc@cisco.com.
Obtaining Technical Assistance • Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration. • Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue. • Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.
Obtaining Technical Assistance Upgrading System Memory in Cisco 3600 Series Routers 42 78-3636-05
Obtaining Technical Assistance This document is to be used in conjunction with Cisco 3600 Series Hardware Installation Guide and the Regulatory Compliance and Safety Information document for your router. CCIP, CCSP, the Cisco Arrow logo, the Cisco Powered Network mark, Cisco Unity, Follow Me Browsing, FormShare, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.
Obtaining Technical Assistance Upgrading System Memory in Cisco 3600 Series Routers 44 78-3636-05
