Chapter 1 Product Overview
Route Processors
1-28
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,
1 GB, or 2 GB
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
1 GB
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
—
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