Cisco Systems 7500 Series manual Upgrading or Replacing Dram DIMMs on the RSP4 and RSP8

Chapter 9 Replacing DRAM on the Route Switch Processor

Upgrading or Replacing DRAM DIMMs on the RSP4 and RSP8

Step 7 When all SIMMs are installed, check all alignment holes (two on each SIMM) to ensure that the spring retainer is visible. If it is not, the SIMM is not seated properly. If any SIMM appears misaligned, carefully remove it and reseat it in the socket. Push the SIMM firmly back into the socket until the retainer springs snap into place.

Step 8 Replace the RSP2. (If you have a Cisco 7507 or Cisco 7507-MX, see the procedure in Figure 3-8; if you have a Cisco 7513, Cisco 7513-MX, or a Cisco 7576, see the procedure in Figure 3-14.)

Step 9 Turn on power to the system.

After you have correctly installed RSP2 DRAM SIMMs, reinstalled the RSP2, and turned on the system power, the system should reboot properly.

If the system fails to boot properly, or if the console terminal displays a checksum or memory error, check the following:

•Ensure that all SIMMs are installed correctly. If necessary, shut down the system and remove the RSP2. Check the SIMMs by looking straight down on them to inspect them 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 from the others, remove the SIMM and reinsert it. Then replace the RSP2 and reboot the system for another installation check.

•Each DRAM SIMM bank must contain SIMMs of the same size and speed or the system will not operate. SIMMs must be 60 ns or faster. The speed is printed along one edge of the SIMM.

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 The time required for the system to initialize varies with different router configurations. Routers with 128 MB of DRAM will take longer to boot than those with 16 MB of DRAM.

This completes the DRAM SIMM replacement procedure for the RSP2.

Upgrading or Replacing DRAM DIMMs on the RSP4 and RSP8

This section describes the procedures for replacing up to two dual in-line memory modules (DIMMs) on your RSP4 or RSP8. You obtain the DIMMs from Cisco Systems.

The system DRAM resides in up to two DIMM sockets in two memory banks, 0 and 1. The DRAM DIMM sockets on the RSP4 are U10 (bank 0) and U13 (bank 1). The default DRAM configuration is

32MB (one 32-MB DIMM in U10). The DRAM DIMM sockets on the RSP8 are U12 (bank 0) and U15 (bank 1). The default DRAM configuration is 64 MB (two 32-MB DIMMs or one 64-MB DIMM).

Caution To prevent system problems, do not use DRAM SIMMs from an RSP2 in the RSP4 or RSP8. The RSP4 and RSP8 require DRAM DIMMs.

Note The total number of memory devices per DIMM differs for each manufacturer. The DIMMs in the following illustrations are generic representations of the actual DRAM DIMMs for your RSP4 or RSP8. To ensure that you are using the correct DIMMs, refer to the specific part or product numbers indicated

Cisco 7500 Series Installation and Configuration Guide

OL-5008-03 B0 9-5