Replacing Rsp7000 Simms (Upgrading Dram) - Cisco 7000 Series Hardware Installation And Maintenance Manual

Installing and Configuring Processor Modules
Step 9
Step 10
Step 11
If the system fails to boot properly, or if the console terminal displays a checksum or memory error,
check the following:
•
•
If after several attempts the system fails to restart properly, contact a service representative for
assistance. Before you call, make note of any error messages, unusual LED states, or any other
indications that might help solve the problem.
Note
with 64 MB of DRAM will take longer to boot than those with 16 MB of DRAM.

Replacing RSP7000 SIMMs (Upgrading DRAM)

The system DRAM resides on up to four SIMMs on the RSP7000. The DRAM SIMM sockets are
U4 and U12 for bank 0, and U18 and U25 for bank 1. The default DRAM configuration is 16 MB
(two 8-MB SIMMs in bank 0). (See Figure 5-12.)
Note
in the following illustrations are generic representations of the actual DRAM SIMMs for your
RSP7000. To be sure that you are using the correct SIMMs, refer to the specific part or product
numbers indicated in the approved vendor list (AVL) and by your DRAM upgrade requirements.
5-38 Cisco 7010 Hardware Installation and Maintenance
Follow the steps in the section "Installing CxBus Interface Processors" to reinstall the RP.
Be sure to use the ejector levers to install the RP, then tighten the top and bottom captive
installation screws.
Reconnect any console or auxiliary port cables to the connectors on the RP.
Turn ON the system for an installation check, which is described in the section "Starting
the Router" in the chapter "Installing the Router."
Ensure that all four SIMMs are installed correctly. If necessary, shutdown the system and remove
the RP. Check the SIMMs by looking straight down on them and then at eye level. The SIMMs
should all be aligned at the same angle and the same height when properly installed. If a SIMM
appears to stick out, or rest in the socket at a different angle than the others, remove the SIMM
and reinsert it. Then replace the RP and reboot the system for another installation check.
All four sockets must contain SIMMs of the same size and speed, or the system will not operate.
The SIMMs should have the following characteristics:
— SIMMs must be the 16 MB x 9 type. Each SIMM should contain nine small memory
components, as shown in Figure 5-9. (The actual layout of the SIMM can be different; it is
only important that there are nine components.)
— SIMMs must be 70 ns or faster. The speed is usually silkscreened along one edge of the
SIMM.
The time required for the system to initialize (boot) varies by router configuration. Routers
The total number of memory devices per SIMM differs for each manufacturer. The SIMMs