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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03
Chapter 1 Product Overview
Route Processors
GRP Memory Components
Table 1-1
lists the memory components on the GRP.
Figure 1-5
shows the location
of the DRAM and Flash SIMM on the GRP.
DRAM
The EDO DRAM on the GRP stores routing tables, protocols, and network
accounting applications, and runs the Cisco IOS software. The standard (default)
GRP DRAM configuration is 64 MB of EDO DRAM, which you can upgrade to
256 MB.
Table 1-2
lists the DRAM configurations and upgrades.
Table 1-1
GRP Memory Components
Type
Size
Quantity
Description
Location
DRAM
128
1
or 256
MB
1.
128 MB of DRAM is the default DRAM configuration for the GRP.
1 or 2
64-MB or 128-MB DIMMs (based on
DRAM required) for main Cisco IOS
software functions
U39 (bank 1)
U42 (bank 2)
SRAM
512 KB
(fixed)
2
2.
This memory is neither user configurable nor field upgradeable.
Secondary CPU cache memory functions
—
NVRAM
512 KB
(fixed)
2
System configuration files, register
settings, and logs
—
Flash Memory 8 MB SIMM
3
3.
SIMM socket is wired according to a Cisco design and does not accept industry-standard, 80-pin Flash SIMMs.
1
Cisco IOS software images and other
user-defined files
U17
20 MB
4
Flash
memory card
4.
20-MB Flash memory card is the default shipping configuration.
1 or 2
Cisco IOS software images, system
configuration files, and other user-defined
files on up to two Flash memory cars
5
5.
Type I or Type II PCMCIA cards can be used in either PCMCIA slot.
Flash
memory card
slot 0 and
slot 1
Flash boot
ROM
512 KB
1
Flash EPROM for the ROM monitor
program boot image
