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Cisco Systems 3600 Series manual Obtaining Documentation, Using the xmodem Command, Cisco.com

Models: 3745 Series 3725 Series 3600 Series

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Recovering Compact Flash Memory and System Images

Recovering Compact Flash Memory and System Images

Recovering Compact Flash Memory and System Images

If you have increased system compact flash memory or reduced DRAM or SDRAM in a Cisco 3700 series router, you might need to reload the Cisco IOS image, using the xmodem command in ROM monitor mode. To use this command, the computer attached to your console must have a terminal emulator that has xmodem capability.

For complete information about ROM monitor commands, refer to Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers, available online at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/index.htm

Using the xmodem Command

If the system image is erased from compact 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 argument 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.

-r—Copy the image to DRAM for launch.

-x—Do not launch image on completion of download.

Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Upgrading System Memory in Cisco 3700 Series Routers

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Cisco Systems 3600 Series, 3725 Series, 3745 Series manual Obtaining Documentation, Using the xmodem Command, Cisco.com

Contents

Product Numbers MEM3725-64D=, MEM3725-128D=Upgrading System Memory in Cisco 3700 Series Routers Memory Capacities Memory Capacities, page Memory Configurations, pageSafety Recommendations, page Tools and Equipment Needed, page Recovering Compact Flash Memory and System Images, pageDynamic Memory Memory ConfigurationsTotal Memory Safety RecommendationsCompact Flash Memory DIMM or SODIMMNote SAVE THESE INSTRUCTIONS Safety WarningsWarning IMPORTANT SAFETY INSTRUCTIONS Warning DefinitionHinweis BEWAHREN SIE DIESE SICHERHEITSANWEISUNGEN AUF Attention IMPORTANTES INFORMATIONS DE SÉCURITÉRemarque CONSERVEZ CES INFORMATIONS Warnung WICHTIGE SICHERHEITSANWEISUNGENNota GUARDE ESTAS INSTRUÇÕES Advarsel VIKTIGE SIKKERHETSINSTRUKSJONERMerk TA VARE PÅ DISSE INSTRUKSJONENE Aviso INSTRUÇÕES IMPORTANTES DE SEGURANÇAWarning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement Safety with Electricity Tools and Equipment Needed Upgrading System Memory in Cisco 3725 RoutersPreventing Electrostatic Discharge Damage Removing the Cisco 3725 Router Cover SDRAM DIMM Location and Orientation Replacing Cisco 3725 SDRAMRemoving SDRAM DIMMs Figure 2 SDRAMM DIMM Locations in the Cisco 3725 RouterFigure 3 SDRAM DIMM Orientation in the Cisco 3725 Router Step 5 If necessary, repeat Step 3 and Step 4 for the other DIMM Step 6 Proceed to the “Installing SDRAM DIMMs” section on page“Replacing the Cisco 3725 Cover” section on page Installing SDRAM DIMMsReplacing CompactFlash Memory Cards “Replacing CompactFlash Memory Cards” section on pageReplacing the Cisco 3725 Cover Upgrading System Memory in Cisco 3745 Routers Replacing Connections to the RouterRemoving the Cisco 3745 Mainboard Tray OL-5423-02 Figure 6 Captive Screws on a Cisco 3745 RouterUpgrading System Memory in Cisco 3745 Routers Upgrading System Memory in Cisco 3700 Series RoutersFigure 7 Removing the Front Panel from a Cisco 3745 Router HingesFan tray SDRAM SODIMM Location and Orientation Replacing Cisco 3745 SDRAMFigure 9 SDRAMM SODIMM Location in the Cisco 3745 Router Removing SDRAM SODIMMsInstalling SDRAM SODIMMs Step 6 Proceed to the “Installing SDRAM DIMMs” section on pageMemory module “Replacing CompactFlash Memory Cards” section on page “Replacing the Cisco 3745 Mainboard” section on pageReplacing CompactFlash Memory Cards Step 7 Proceed to either of the following as appropriateReplacing the Cisco 3745 Mainboard Front panel Figure 13 Installing the Front Panel on a Cisco 3745 RouterAccess door HingesFigure 14 Captive Screws on a Cisco 3745 Router Replacing Connections to the RouterRecovering Compact Flash Memory and System Images Using the xmodem CommandObtaining Documentation Cisco.comCisco Technical Support Website Documentation FeedbackObtaining Technical Assistance Ordering DocumentationSubmitting a Service Request Definitions of Service Request SeverityObtaining Additional Publications and Information http//cisco.com/univercd/cc/td/doc/pcat