Bridge/Router Installation and Configuration Guide

1-31
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
GRP Memory Components
This section describes various types of memory used on the GRP to support router
functions.
Table 1-1 provides a quick reference of the different types of memory,
and Figure 1-17 shows the location on the GRP board.
Ta b l e 1-1 GRP Memory Components
Type Size Quantity Description Location
DRAM 128
1
or
256 MB
1. Default shipping configuration.
1 or 2 Uses 64 MB or 128 MB DIMMs
(based on DRAM configuration) for
main Cisco
IOS software functions
U39 (bank 1)
U42 (bank 2)
SRAM 512 KB (fixed) — Secondary CPU cache memory
functions
—
NVRAM 512 KB (fixed) — System configuration files, register
settings, and logs
—
Flash memory 8 MB SIMM 1 Cisco IOS software images and other
user-defined files
U17
Flash memory
card
PCMCIA
2
2. Type I or Type II PCMCIA cards can be used in either slot.
20 MB
1
1 or 2 Cisco IOS software images, system
configuration files, and other
user-defined files on one or two flash
memory cards
Slots 0 and 1
Flash boot
ROM
512 KB 1 Flash EPROM for the ROM monitor
program boot image
—