Cisco Systems Cisco 12416, Cisco 12816

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Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide

OL-11495-01

Chapter 1 Product Overview

Alarm Card, Line Card, and Rout Processor Overview

PRP Memory Components

This section describes various types of memory used on the PRP to support router

functions. Table 1-3 provides a quick reference of the different types of memory,

and Figure 1-21 shows the location on the PRP board.

Tab l e 1-3 PRP Memory Components

Type Size Quantity Description Location

SDRAM 512 MB1,

1 GB, or 2 GB

1. Default shipping configuration.

1 or 2 Uses 512 MB or 1 GB DIMMs (based on

SDRAM configuration) for main Cisco IOS

software functions

U15 (bank 1)

U18 (bank 2)

SRAM 2 MB (fixed) — Secondary CPU cache memory functions —

NVRAM 2 MB (fixed) — System configuration files, register settings,

and logs

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Flash

memory

64 MB SIMM 1 Cisco IOS boot image (bootflash), crash

information, and other user-defined files

Flash disk

(PCMCIA)

64 MB11 or 2 Cisco IOS software images, system

configuration files, and other user-defined

files on one or two Flash memory cards

Flash memory

card slot 0 and

slot 1

Flash boot

ROM

512 KB 1Flash EPROM for the ROM monitor program

boot image

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