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Overview of the Cisco 12008
Cisco 12008 Gigabit Switch Router Installation and Configuration Guide
1-28
The Cisco 12008 supports downloadable system software for most Cisco IOS software
upgrades, enabling you to remotely download, store, and boot from a new Cisco IOS
software image.
GRP Memory Components
Table 1-2 lists the memory components on the GRP. Figure 1-10 shows the location of the
two DRAM SIMMs and the Flash SIMM on the GRP.
Table 1-2 GRP Memory Components
Memory Type Memory Size Quantity Description
DRAM 64
1
to 256 MB
1. 64 MB of DRAM is the default DRAM configuration for the GRP.
1 or 2 64- or 128-MB DIMMs (based on
DRAM required) for main Cisco IOS
software functions
SRAM 512 KB (fixed)
2
2. SRAM is not user configurable or field upgradeable.
SRAM for secondary CPU cache
memory functions
NVRAM 512 KB (fixed)
3
3. NVRAM is not user configurable or field upgradeable.
MVRAM for the system configuration
file
Flash memory
SIMM
4
4. The SIMM socket is wired according to Cisco’s own design and does not accept industry-standard 80-pin Flash
SIMMs.
8 MB 1 Contains Cisco IOS software images and
other user-defined files on the GRP
Flash memory
(card)
20 MB
5
5. 20-MB Flash memory card is the default shipping configuration for the Cisco 12008.
1 or 2 Contains Cisco IOS software images and
other user-defined files on up to two
PCMCIA-based Flash memory cards
6
6. A Type 1 or Type 2 PCMCIA card can be used in either PCMCIA slot.
Flash boot ROM 512 KB 1 Flash EPROM for the ROM monitor
program boot image