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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 3700 series router:
•Synchronized dynamic random-access memory (SDRAM) dual in-line memory modules (DIMMs)
•Small-outline dual in-line memory modules (SODIMMs)
•Cisco 3700 CompactFlash memory cards.
Note In this document, the term “Cisco 3700 series” represents the following router models: Cisco 3725 router and Cisco 3745 router.
Use this document in conjunction with the following:
•Cisco 3700 Series Hardware Installation Guide and the Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Regulatory Compliance and Safety Information document for your router, both available online at the following URL:
•http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3700/hw_inst/index.htm
•Installing and Formatting Cisco 2691, Cisco 3631, and Cisco 3700 Series CompactFlash Memory Cards, available online at the following URL:
•http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3700/hw_inst/hw_notes/ comflash.htm
If you have questions or need help, see the “Obtaining Documentation” section on page 27 and the “Obtaining Technical Assistance” section on page 28 for further information.
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2004 Cisco Systems, Inc. All rights reserved.
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 Additional Publications and Information, page 29
Memory Capacities
You might need to upgrade memory for the following reasons:
•To upgrade to a new Cisco IOS feature set or release that requires additional memory. (Memory requirements for each feature set and release are available in the release notes for that release.)
•To use very large routing tables, many protocols (as may be required, for example, when the router is part of both a large external network and your internal network), or other memory-intensive features such as spoofing or protocol translations.
This document describes how to upgrade both dynamic memory and compact flash memory. Cisco 3700 series routers use dynamic memory in the form of SDRAM DIMMs (Cisco 3725 router) or SDRAM SODIMMs (Cisco 3745 router). Memory capacities are shown in Table 1.
Table 1 |
Memory Capacities for Cisco 3700 Series Routers |
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Router |
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DRAM |
Compact Flash Memory |
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Cisco 3725 |
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256- (default) to 256-MB SDRAM DIMMs |
32- (default) to 128-MB memory card |
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Cisco 3745 |
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256- (default) to 512-MB SDRAM SODIMMs |
32- (default) to 128-MB memory card |
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Note This document discusses how to replace dynamic memory only. To learn how to replace CompactFlash memory cards, refer to Installing and Formatting Cisco 2691, Cisco 3631, and Cisco 3700 Series CompactFlash Memory Cards, available online at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3700/hw_inst/hw_notes/ index.htm.
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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 much memory is currently installed in your router, enter the show version command in EXEC mode. Near the middle of the resulting output, locate a message similar to the following:
Cisco XXXX processor (revision X) with 24576K/8192K bytes of memory.
This line shows how much memory is installed (in this example, 24576K/8192K). The first number represents primary memory; the second number represents shared memory.
Step 2 To configure the proportion of SDRAM devoted to main memory and to shared memory, enter the memory-size iomem command in global configuration mode.
Note For information about these and related commands, refer to the Cisco IOS configuration guides and command references. See the “Obtaining Documentation” section on page 27 for information about these publications.
Dynamic memory resides in one or two sockets in the router chassis. A socket corresponds to one bank of memory. Cisco 3700 series router sockets are as follows:
•Cisco 3725: Two sockets, each of which can support one SDRAM DIMM or be left empty; sockets can be filled in any order
•Cisco 3745: One socket that can support two SDRAM SODIMMs, one on top of the other
SDRAM DIMM and SODIMM sizes allowed in each router type, and the total memory capacity resulting from insertion of one or two DIMMs or SODIMMs, are shown in Table 2.
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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 |
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3725/3745 |
128 MB (default) |
128 MB (default) |
256 MB |
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— |
128 MB |
128 MB |
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64 MB |
128 MB |
192 MB |
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128 MB |
64 MB |
192 MB |
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128 MB |
128 MB |
256 MB |
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3745 |
256 MB |
— |
256 MB |
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— |
256 MB |
256 MB |
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64 MB |
256 MB |
320 MB |
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256 MB |
64 MB |
320 MB |
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128 MB |
256 MB |
384 MB |
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256 MB |
128 MB |
384 MB |
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256 MB |
256 MB |
512 MB |
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Compact Flash Memory
Cisco IOS software on Cisco 3700 series routers is stored in two CompactFlash memory cards—one external and one internal. Memory cards come with 32-, 64-, or 128-MB of memory.
To determine how much compact flash memory is installed in your router, enter the show flash command in EXEC mode.
Note To install a new CompactFlash memory card, refer to Installing and Formatting Cisco 2691, Cisco 3631, and Cisco 3700 Series CompactFlash Memory Cards, available online at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3700/hw_inst/hw_notes/ index.htm
Safety Recommendations
Follow these guidelines to ensure general safety:
•Keep the chassis area clear and dust-free during and after installation.
•Place the removed chassis cover in a safe place.
•Keep tools away from walk areas where you or others could fall over them.
•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 equipment unsafe.
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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 accidents. To see translations of the warnings that appear in this publication, refer to the translated safety warnings that accompanied this device.
Note: SAVE THESE INSTRUCTIONS
Note: This documentation is to be used in conjunction with the specific product installation guide that shipped with the product. Please refer to the Installation Guide, Configuration Guide, or other enclosed additional documentation for further details. Statement 1020
Waarschuwing BELANGRIJKE VEILIGHEIDSINSTRUCTIES
Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van de standaard praktijken om ongelukken te voorkomen. Voor een vertaling van de waarschuwingen die in deze publicatie verschijnen, dient u de vertaalde veiligheidswaarschuwingen te raadplegen die bij dit apparaat worden geleverd.
Opmerking BEWAAR DEZE INSTRUCTIES.
Opmerking Deze documentatie dient gebruikt te worden in combinatie met de installatiehandleiding voor het specifieke product die bij het product wordt geleverd. Raadpleeg de installatiehandleiding, configuratiehandleiding of andere verdere ingesloten documentatie voor meer informatie.
Varoitus TÄRKEITÄ TURVALLISUUTEEN LIITTYVIÄ OHJEITA
Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä asiakirjassa esitettyjen varoitusten käännökset löydät laitteen mukana toimitetuista ohjeista.
Huomautus SÄILYTÄ NÄMÄ OHJEET
Huomautus Tämä asiakirja on tarkoitettu käytettäväksi yhdessä tuotteen mukana tulleen asennusoppaan kanssa. Katso lisätietoja asennusoppaasta, kokoonpano-oppaasta ja muista mukana toimitetuista asiakirjoista.
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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, consultez les consignes de sécurité traduites qui accompagnent cet appareil.
Remarque CONSERVEZ CES INFORMATIONS
Remarque Cette documentation doit être utilisée avec le guide spécifique d'installation du produit qui accompagne ce dernier. Veuillez vous reporter au Guide d'installation, au Guide de configuration, ou à toute autre documentation jointe pour de plus amples renseignements.
Warnung WICHTIGE SICHERHEITSANWEISUNGEN
Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewusst. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise sind im Lieferumfang des Geräts enthalten.
Hinweis BEWAHREN SIE DIESE SICHERHEITSANWEISUNGEN AUF
Hinweis Dieses Handbuch ist zum Gebrauch in Verbindung mit dem Installationshandbuch für Ihr Gerät bestimmt, das dem Gerät beiliegt. Entnehmen Sie bitte alle weiteren Informationen dem Handbuch (Installationsoder Konfigurationshandbuch o. Ä.) für Ihr spezifisches Gerät.
Figyelem! FONTOS BIZTONSÁGI ELÕÍRÁSOK
Ez a figyelmezetõ jel veszélyre utal. Sérülésveszélyt rejtõ helyzetben van. Mielõtt bármely berendezésen munkát végezte, legyen figyelemmel az elektromos áramkörök okozta kockázatokra, és ismerkedjen meg a szokásos balesetvédelmi eljárásokkal. A kiadványban szereplõ figyelmeztetések fordítása a készülékhez mellékelt biztonsági figyelmeztetések között található.
Megjegyzés ÕRIZZE MEG EZEKET AZ UTASÍTÁSOKAT!
Megjegyzés Ezt a dokumentációt a készülékhez mellékelt üzembe helyezési útmutatóval együtt kell használni. További tudnivalók a mellékelt Üzembe helyezési útmutatóban (Installation Guide), Konfigurációs útmutatóban (Configuration Guide) vagy más dokumentumban találhatók.
Avvertenza IMPORTANTI ISTRUZIONI SULLA SICUREZZA
Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti. Per le traduzioni delle avvertenze riportate in questo documento, vedere le avvertenze di sicurezza che accompagnano questo dispositivo.
Nota CONSERVARE QUESTE ISTRUZIONI
Nota La presente documentazione va usata congiuntamente alla guida di installazione specifica spedita con il prodotto. Per maggiori informazioni, consultare la Guida all'installazione, la Guida alla configurazione o altra documentazione acclusa.
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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 INSTRUKSJONENE
Merk Denne dokumentasjonen skal brukes i forbindelse med den spesifikke installasjonsveiledningen som fulgte med produktet. Vennligst se installasjonsveiledningen, konfigureringsveiledningen eller annen vedlagt tilleggsdokumentasjon for detaljer.
Aviso INSTRUÇÕES IMPORTANTES DE SEGURANÇA
Este símbolo de aviso significa perigo. O utilizador encontra-se numa situação que poderá ser causadora de lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha em atenção os perigos envolvidos no manuseamento de circuitos eléctricos e familiarize-se com as práticas habituais de prevenção de acidentes. Para ver traduções dos avisos incluídos nesta publicação, consulte os avisos de segurança traduzidos que acompanham este dispositivo.
Nota GUARDE ESTAS INSTRUÇÕES
Nota Esta documentação destina-se a ser utilizada em conjunto com o manual de instalação incluído com o produto específico. Consulte o manual de instalação, o manual de configuração ou outra documentação adicional inclusa, para obter mais informações.
¡Advertencia! INSTRUCCIONES IMPORTANTES DE SEGURIDAD
Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los procedimientos estándar de prevención de accidentes. Vea las traducciones de las advertencias que acompañan a este dispositivo.
Nota GUARDE ESTAS INSTRUCCIONES
Nota Esta documentación está pensada para ser utilizada con la guía de instalación del producto que lo acompaña. Si necesita más detalles, consulte la Guía de instalación, la Guía de configuración o cualquier documentación adicional adjunta.
Varning! VIKTIGA SÄKERHETSANVISNINGAR
Denna varningssignal signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanliga förfaranden för att förebygga olyckor. Se översättningarna av de varningsmeddelanden som finns i denna publikation, och se de översatta säkerhetsvarningarna som medföljer denna anordning.
OBS! SPARA DESSA ANVISNINGAR
OBS! Denna dokumentation ska användas i samband med den specifika produktinstallationshandbok som medföljde produkten. Se installationshandboken, konfigurationshandboken eller annan bifogad ytterligare dokumentation för närmare detaljer.
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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
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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 ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. Statement 1021
Warning Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the unit first. Statement 1021
Warning Connect the unit only to DC power source that complies with the safety extra-low voltage (SELV) requirements in IEC 60950 based safety standards. Statement 1033
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 quickly shut the power off.
•Before working on the router, turn off the power and unplug the power cord.
•Disconnect all power before doing the following:
–Installing or removing a router chassis
–Working near power supplies
–Performing most hardware upgrades
•Do not work alone if potentially hazardous conditions exist.
•Never assume that power is disconnected from a circuit. Always check.
•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 router.
–If possible, send another person to get medical aid. Otherwise, determine the condition of the victim and then call for help.
–Determine if the victim needs rescue breathing or external cardiac compressions; then take appropriate action.
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