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Streszczenie treści zawartej na stronie nr. 1

Upgrading System Memory in Cisco 3700 Series
Routers
Product Numbers:
MEM3725-32CF-INCL, MEM3725-32U64CF, MEM3725-32U128CF, MEM3725-32CF=, MEM3725-64CF=,
MEM3725-128CF=
MEM3725-64D=, MEM3725-128D=
MEM3745-256D-INCL, MEM3745-256D=, MEM3745-128CF=, MEM3745-128D-INCL, MEM3745-128D=,
MEM3745-128U192D, MEM3745-128U256D, MEM3745-256U512D, MEM3745-32CF-INCL, MEM3745-32CF=,
MEM3745-32U128CF, MEM3745-32U64CF, MEM3745-64CF=, MEM3745-64D=
This document describes how to upgrade the following in a Cisco

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Memory Capacities This document contains the following sections: � Memory Capacities, page 2 � Memory Configurations, page 3 � Safety Recommendations, page 4 � Tools and Equipment Needed, page 10 � Upgrading System Memory in Cisco 3725 Routers, page 10 � Upgrading System Memory in Cisco 3745 Routers, page 17 � Recovering Compact Flash Memory and System Images, page 27 � Obtaining Documentation, page 27 � Documentation Feedback, page 28 � Obtaining Technical Assistance, page 28 � Obtaining Addi

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Memory Configurations Memory Configurations For information on configuring dynamic memory and compact flash memory, see the following sections. Dynamic Memory You can configure dynamic memory (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. To examine current dynamic memory status or reconfigure memory allocation, do the following, as appropriate: Step 1 To see how

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Safety Recommendations Table 2 SDRAM Configurations for Cisco 3700 Series Routers Router DIMM or SODIMM 0 DIMM or SODIMM 1 Total Memory 3725/3745 128 MB (default) 128 MB (default) 256 MB — 128 MB 128 MB 64 MB 128 MB 192 MB 128 MB 64 MB 192 MB 128 MB 128 MB 256 MB 3745 256 MB — 256 MB — 256 MB 256 MB 64 MB 256 MB 320 MB 256 MB 64 MB 320 MB 128 MB 256 MB 384 MB 256 MB 128 MB 384 MB 256 MB 256 MB 512 MB Compact Flash Memory Cisco IOS software on Cisco 3700 series routers is stored in two CompactF

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Safety Recommendations Safety Warnings Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement. Warning Definition Warning IMPORTANT SAFETY INSTRUCTIONS This warning symbol 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 a

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Safety Recommendations Attention IMPORTANTES INFORMATIONS DE SÉCURITÉ Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements figurant dans cette publication, co

Streszczenie treści zawartej na stronie nr. 7

Safety Recommendations Advarsel VIKTIGE SIKKERHETSINSTRUKSJONER Dette varselssymbolet betyr fare. Du befinner deg i en situasjon som kan forårsake personskade. Før du utfører arbeid med utstyret, bør du være oppmerksom på farene som er forbundet med elektriske kretssystemer, og du bør være kjent med vanlig praksis for å unngå ulykker. For å se oversettelser av advarslene i denne publikasjonen, se de oversatte sikkerhetsvarslene som følger med denne enheten. Merk TA VARE PÅ DISSE INSTRUKS

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Safety Recommendations Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030 Warning Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040 Upgrading System Memory in Cisco 3700 Series Routers 8 OL-5423-02

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Safety Recommendations Safety with Electricity Warning Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface. Statement 1037 Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001 Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN port

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Tools and Equipment Needed Preventing Electrostatic Discharge Damage Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD can occur when electronic printed circuit cards are improperly handled, and can result in complete or intermittent failures. Always follow ESD-prevention procedures when removing and replacing cards. Ensure that the router chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good

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Upgrading System Memory in Cisco 3725 Routers Removing the Cisco 3725 Router Cover To remove the router cover, follow these steps: 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 Turn off the power and unplug the power cord. Warning Before opening the unit, disconnect the telephone-network cables to avoid contact w

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Upgrading System Memory in Cisco 3725 Routers Figure 1 Removing the Cover from a Cisco 3725 Router 2 1 Step 8 When you are ready to replace the cover, see the “Replacing the Cisco 3725 Cover” section on page 16. Replacing Cisco 3725 SDRAM SDRAM DIMM Location and Orientation Figure 2 shows the location of dynamic memory—SDRAM DIMM sockets 0 and 1—in a Cisco 3725 router. DIMMs are manufactured with polarization notches to ensure proper orientation, and alignment holes to ensure proper position

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Upgrading System Memory in Cisco 3725 Routers Figure 2 SDRAMM DIMM Locations in the Cisco 3725 Router 0 1 Figure 3 SDRAM DIMM Orientation in the Cisco 3725 Router Connector edge Polarization notches Alignment holes Removing SDRAM DIMMs To remove SDRAM DIMMs, follow these steps: 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 connecto

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Upgrading System Memory in Cisco 3725 Routers Caution Handle the DIMM by the nonconnector edges only; do not press on the center. Handle carefully. DIMMs are ESD-sensitive components and can be damaged by mishandling. Step 3 Remove the DIMM by pushing the locking spring clips on both sides outward. This ejects the DIMM from its socket. (See Figure 4. ) Figure 4 Removing and Installing SDRAM DIMMs in the Cisco 3725 Router Locking spring clips Step 4 Hold the DIMM by the edges with your thumb a

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Upgrading System Memory in Cisco 3725 Routers Installing SDRAM DIMMs To install SDRAM DIMMs, follow these steps: Step 1 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Step 2 On the mainboard, locate the SDRAM DIMM sockets. (See Figure 2. ) Caution Handle the DIMM by the nonconnector edges only; do not press on the center. Handle

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Upgrading System Memory in Cisco 3725 Routers Replacing the Cisco 3725 Cover To replace the router cover, follow these steps: Step 1 Place the chassis so that the front panel faces you. Make sure that all cables are securely tucked in and are not in danger of being stressed or cut. Step 2 Hold the cover at a 45-degree angle, and insert the tabs into the slots along the front (bezel) edge of the chassis to engage the hinges. (See Figure 5 part 1. ) Step 3 Lower the front of the cover onto the

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Upgrading System Memory in Cisco 3745 Routers Replacing Connections to the Router To make final connections to the router, follow these steps: Warning Read the installation instructions before connecting the system to the power source. Statement 1004 Step 1 Replace all network connections. Step 2 Do one of the following: � AC-powered router: Plug the power cord into a 3-terminal, single-phase power source that provides power within the acceptable range (100 to 240 VAC, 50 to 60 Hz). � DC-powe

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Upgrading System Memory in Cisco 3745 Routers Figure 6 Captive Screws on a Cisco 3745 Router Upgrading System Memory in Cisco 3700 Series Routers 18 OL-5423-02 72114

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Upgrading System Memory in Cisco 3745 Routers Step 5 Open the front panel to the straight-out position and lift it off its hinges. (See Figure 7 parts 1 and 2. ) Figure 7 Removing the Front Panel from a Cisco 3745 Router Hinges 1 2 Access door Fan tray Step 6 Loosen the two captive retention screws, one on either side of the motherboard. (See Figure 8. ) Step 7 Pull the ejector levers at both sides, and carefully pull the mainboard straight out of the chassis. Place it on an antistatic surface.

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Upgrading System Memory in Cisco 3745 Routers Figure 8 Removing the Mainboard Tray from a Cisco 3745 Router Captive retention screw Captive Ejector levers retention screw Caution The mainboard is an ESD-sensitive component. To avoid damage, observe all ESD precautions. Step 8 When you are ready to replace the mainboard tray, see the “Replacing the Cisco 3745 Mainboard” section on page 24. Replacing Cisco 3745 SDRAM SDRAM SODIMM Location and Orientation The Cisco 3745 router mainboard includes

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