Cisco 2600 Series Hardware Installation Guide
Replacing the System-Code SIMM
B-8
Step 6
Insert the new DRAM DIMM by sliding the end with the metal fingers into the
DIMM connector socket at approximately a 90º angle to the system card. Gently
rock the DIMM back into place until the latch on either side snaps into place. Do
not use excessive force because the connector might break.
Step 7
Replace the router cover. Follow the instructions in the “Closing the Chassis”
section on page B-11.
Replacing the System-Code SIMM
The system code (router operating system software) is stored in a Flash memory 80-pin
single in-line memory module (SIMM).
Tools Required
You will need the following tools to remove and replace the system-code SIMM on the
router:
•
Medium-size flat-blade screwdriver (1/4 inch [0.625 cm])
•
Electrostatic discharge (ESD)-preventive wrist strap
•
System-code SIMM
Preparing to Install the System-Code SIMM
There is one system-code (Flash memory) SIMM socket on the system board. You can
verify how much Flash memory is already installed in your router by entering the show
flash EXEC command.
Caution
The system code is stored on the Flash memory SIMM, but new system-code
SIMMs are shipped without preinstalled software. Before continuing with this procedure,
use the copy flash tftp EXEC command to back up the system code to a Trivial File
Transfer Protocol (TFTP) server.
