Specifications

B-8 Cisco Multiport Router Installation and Configuration Guide

Replacing the System-Code SIMMs

Note For more information about the copy ﬂash tftp command and other related

commands, refer to the Cisco IOS conﬁguration and command reference publications.

System-Code SIMM Replacement

Take the following steps to upgrade the system-code Flash memory SIMMs:

Step 1 If you have not already done so, enter the copy ﬂash tftp EXEC command to

back up the system code.

Step 2 Power OFF the router.

Step 3 Remove all cables from the rear panel of the router.

Step 4 Attach an ESD-preventive wrist or ankle strap.

Step 5 Open the chassis cover following the procedure in the section “Opening the

Chassis” earlier in this appendix.

Step 6 Locate the system-code SIMMs on the system card, labeled CODE0 and

CODE1. (See Figure B-2.)

Step 7 If necessary, remove the existing system-code SIMM by pulling outward on the

connector holders to unlatch them. The connector holds the SIMM tightly, so be

careful not to break the holders on the SIMM connector. (See Figure B-4.)

If you are installing system-code SIMMs in both sockets (CODE0 and CODE1),

both SIMMs must be the same size. For example, if a 4-MB system-code SIMM

is already installed in your router, the new SIMM must also be 4 MB. Populate

the SIMM socket labeled CODE0 ﬁrst; then populate CODE1.

Caution To prevent damage, do not press on the center of the SIMMs. Handle each SIMM

carefully.