Cisco Systems 12006 series GRP Memory Components, Dram, Type, Size, Quantity, Description, 1-19

Chapter 1 Product Overview

Route Processors

GRP Memory Components

Table 1-1lists the memory components on the GRP. Figure 1-5shows the location of the DRAM and Flash SIMM on the GRP.

Table 1-1	GRP Memory Components
Type	Size	Quantity	Description	Location
DRAM	1281 or 256	1 or 2	64-MB or 128-MB DIMMs (based on	U39 (bank 1)
	MB		DRAM required) for main Cisco IOS	U42 (bank 2)
			software functions
SRAM	512 KB		Secondary CPU cache memory functions	—
	(fixed)2
NVRAM	512 KB		System configuration files, register	—
	(fixed)2		settings, and logs
Flash Memory	8 MB SIMM3	1	Cisco IOS software images and other	U17
			user-defined files
	20 MB4 Flash	1 or 2	Cisco IOS software images, system	Flash
	memory card		configuration files, and other user-defined	memory card
			files on up to two Flash memory cars5	slot 0 and
				slot 1
Flash boot	512 KB	1	Flash EPROM for the ROM monitor
ROM			program boot image

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

2.This memory is neither user configurable nor field upgradeable.

3.SIMM socket is wired according to a Cisco design and does not accept industry-standard, 80-pin Flash SIMMs.

4.20-MB Flash memory card is the default shipping configuration.

5.Type I or Type II PCMCIA cards can be used in either PCMCIA slot.

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 1-2lists the DRAM configurations and upgrades.

	Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03		1-19