Memory Specifications - Cisco 7304 Installation And Configuration Manual

NSE-100 Memory Information
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Memory Specifications

Table 1-1
configuration information for the NSE-100.
supported on the NSE-100.
Table 1-1 NSE-100 Memory Specifications
Memory Type Memory Size
1
SDRAM 256 or 512 MB
Non-upgradeable boot 512 KB
ROM
Upgradeable boot 1 MB
ROM
NVRAM 512 KB
Cisco 7304 Network Service Engine Installation and Configuration
1-6
Main memory for Parallel eXpress Forwarding (PXF)—Stores the tables for PXF routing and other
PXF features. On the NSE-100, IP traffic, with a few exceptions, is always forwarded using PXF.
Packet memory—Used for packet buffering by the router's network interfaces.
Flash memory—Stores the boot helper image software. The boot helper image allows you to boot
the router when the CompactFlash Disk does not contain a valid system image. It also allows you to
boot the router from a network server.
CompactFlash Disk (disk0:)—Stores the Cisco IOS software image and any other data that is stored
in Flash memory. On the NSE-100, the router CLI refers to the CompactFlash Disk slot on the
NSE-100 faceplate as disk0:.
CompactFlash Disk (bootdisk:)—Stores the boot helper image software. The boot helper image
allows you to boot from the router when the CompactFlash Disk in disk0: does not contain a valid
system image. It also allows you to boot the router from a network server.
Boot one time programmable (OTP) read-only memory (ROM)—Performs power-on diagnostics
and initialization; initiates system bootup based on virtual configuration register. Contains the ROM
monitor boot image, which permits you to boot the Cisco IOS image from either bootflash or a
CompactFlash Disk. The boot OTP ROM cannot be upgraded; ROM can be upgraded using
upgradeable boot ROM, also called the "golden ROM" for Cisco 7304 routers in some Cisco
documentation.
Upgradeable boot ROM—The upgradeable boot ROM performs the same functions as the boot OTP
ROM, but is upgradeable. If the boot code is upgraded, the upgraded boot code is stored in
upgradeable boot ROM.
Boot ROM is upgraded using the Cisco IOS software. Boot ROM cannot be upgraded by
physically changing a component on the NSE-100 board.
Nonvolatile random-access memory (NVRAM)—Stores the system configuration, environmental
monitoring logs, and the virtual configuration register.
provides memory specifications and
Quantity
1
1
2
1
Table 1-2 provides user-replaceable memory
Table 1-3 provides information on the CompactFlash disks
Description
256-MB or 512-MB SODIMM
2
OTP ROM for the ROM monitor (ROMmon)
Programmable ROM
Stores the system configuration and
environmental monitoring logs
Chapter 1 NSE-100 Overview
Location on
NSE-100 Board
U19
U11
U14, U34
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OL-3967-01