Cisco Systems 12406 series manual PRP Memory Components, 1-28, Type, Size, Quantity, Description

Chapter 1 Product Overview

Route Processors

PRP Memory Components

PRP memory options and functions are listed in Table 1-4.

Table 1-4		PRP Memory Components
Type	Size		Quantity	Description	Location
SDRAM1	512 MB,		1 or 2	512-MB and 1-GB DIMMs (based on desired	U15 (bank 1)2
	1	GB, or 2 GB		SDRAM configuration) for main Cisco IOS	U18 (bank 2)
				software functions
SRAM3	2	MB (fixed)	—	Secondary CPU cache memory functions	—
NVRAM3	2	MB (fixed)	1	System configuration files, register settings,	—
				and logs
Flash	64 MB		1	Cisco IOS boot image (bootflash), crash	P3
memory	SIMM4			information, and other user-defined files
	64 MB,		1 or 2	Cisco IOS software images, system	Flash disk
	128 MB, or			configuration files, and other user-defined	slot 0 and
	1	GB		files on up to two Flash disks	slot 1
	Flash disks5
Flash boot	512 KB		1	Flash EPROM for the ROM monitor program	—
ROM				boot image

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.

2.If both banks are populated, bank 1 and bank 2 must contain the same size DIMM.

3.This memory is neither user configurable nor field replaceable.

4.Flash memory SIMM is not user configurable or field replaceable.

5.ATA Flash disks and Type I and Type II linear Flash memory cards are supported. See the “Flash Memory” section on page 1-29for Flash disk information.

Note If a single DIMM module is installed, it must be placed in bank 1 (U15).

	Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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