Cisco 3600 Series Upgrade Instructions

4
Upgrading System Memory in Cisco 3700 Series Routers
OL-5423-02
Safety Recommendations
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.
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

Cisco 3600 Series Specifications

General

Brand	Cisco
Model	3600 Series
Category	Network Router
Language	English