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Chapter 1 Product Overview
Route Processors
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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03
PRP Memory Components
PRP memory options and functions are listed in Table 1-4.
Note If a single DIMM module is installed, it must be placed in bank 1 (U15).
Table 1-4 PRP Memory Components
Type Size Quantity Description Location
SDRAM
1
1. Default SDRAM configuration is 512 MB. Bank 1 (U15) must be populated first. You can use one or both banks to configure
SDRAM combinations of 512 MB, 1 GB, or 2 GB. 1.5-GB configurations are not supported.
512 MB,
1GB, or 2GB
1 or 2 512-MB and 1-GB DIMMs (based on desired
SDRAM configuration) for main Cisco IOS
software functions
U15 (bank 1)
2
U18 (bank 2)
2. If both banks are populated, bank 1 and bank 2 must contain the same size DIMM.
SRAM
3
3. This memory is neither user configurable nor field replaceable.
2 MB (fixed) — Secondary CPU cache memory functions —
NVRAM
3
2 MB (fixed) 1 System configuration files, register settings,
and logs
—
Flash
memory
64 MB
SIMM
4
4. Flash memory SIMM is not user configurable or field replaceable.
1 Cisco IOS boot image (bootflash), crash
information, and other user-defined files
P3
64 MB,
128 MB, or
1GB
Flash disks
5
5. ATA Flash disks and Type I and Type II linear Flash memory cards are supported. See the “Flash Memory” section on
page 1-29 for Flash disk information.
1 or 2 Cisco IOS software images, system
configuration files, and other user-defined
files on up to two Flash disks
Flash disk
slot 0 and
slot 1
Flash boot
ROM
512 KB 1 Flash EPROM for the ROM monitor program
boot image
—