Table of Contents
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Chapter 1
Product Overview
PRP SDRAM
Caution
Note
OL-17441-01
The PRP uses Error Checking and Correction (ECC) Synchronized Dynamic
Random Access Memory (SDRAM) to store routing tables, protocols, network
accounting applications, and to run Cisco IOS software.
Table 1-5
lists the DRAM configurations for the PRP. If you are using:
One DIMM—Bank 1 (U15) must be populated first.
•
Two DIMMs—You cannot mix memory sizes; both banks must contain the
•
same size DIMM.
Table 1-5
PRP-2 DRAM Configurations
Total
SDRAM
SDRAM Sockets
1
2 GB
U15 (bank 1)
U18 (bank 2)
4 GB
U15 (bank 1)
U18 (bank 2)
1. Default shipping configuration.
DRAM DIMMs must be 3.3-volt, 60-nanosecond devices only. Do not attempt to
install other devices in the DIMM sockets. To prevent memory problems, use the
Cisco approved memory products listed in
PRP-3 provides more system memory than PRP-2. PRP-3 is shipped with 2 GB
of system memory in each DDR2 DRAMs, for a total of 4 GB and provides an
upgrade option for a total of 8 GB (4 GB x 2 DRAM).
The two DIMMs must be of the same sizes. Do not use two different DIMM sizes
together.
Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
Line Card and Route Processor Overview
Number of DIMMs
One 2 GB DIMM
or
Two 2 GB DIMMs
One 4 GB DIMM
or
Two 4 GB DIMMs
Table
1-5.
1-27
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Table of Contents
Troubleshooting
