Cisco Systems Cisco 12008 manual GRP Memory Components, Dram

Overview of the Cisco 12008

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	641 to 256 MB	1 or 2	64- or 128-MB DIMMs (based on
			DRAM required) for main Cisco IOS
			software functions
SRAM	512 KB (fixed)2		SRAM for secondary CPU cache
			memory functions
NVRAM	512 KB (fixed)3		MVRAM for the system configuration
			file
Flash memory	8 MB	1	Contains Cisco IOS software images and
SIMM4			other user-defined files on the GRP
Flash memory	20 MB5	1 or 2	Contains Cisco IOS software images and
(card)			other user-defined files on up to two
			PCMCIA-based Flash memory cards6
Flash boot ROM	512 KB	1	Flash EPROM for the ROM monitor
			program boot image

1.64 MB of DRAM is the default DRAM configuration for the GRP.

2.SRAM is not user configurable or field upgradeable.

3.NVRAM is not user configurable or field upgradeable.

4.The SIMM socket is wired according to Cisco’s own design and does not accept industry-standard 80-pin Flash SIMMs.

5.20-MB Flash memory card is the default shipping configuration for the Cisco 12008.

6.A Type 1 or Type 2 PCMCIA card can be used in either PCMCIA slot.

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