5-9
Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 5 NPE-G1 Overview
NPE-G1 Memory Information
• Primary and secondary cache—Hierarchical cache memory storage based on the proximity of the
cache to the core of the processor. Primary cache is closest to the processor core and has the fastest
access. Secondary cache has slower access than primary cache.
• RAM—random-access memory
• RISC—reduced instruction set computing
• ROM—read-only memory
• SDRAM—synchronous dynamic random-access memory
• SDRAM-fixed—SDRAM of a fixed size or quantity; can be replaced, but not upgraded
• SODIMM—small outline dual in-line memory module
• Unified cache—Instruction cache and data cache are combined. For example, a processor may have
primary cache with separate instruction and data cache memory, but unified secondary cache.
NPE-G1 Memory Information
To determine the memory configuration of your NPE-G1, use the show version command.
The following example shows an NPE-G1 installed in a Cisco 7206VXR router. The display for a
Cisco uBR7246VXR router is similar.
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-P-M), Experimental Version
12.2(20011112:161132)
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Tue 13-Nov-01 03:58 by
Image text-base:0x600089B8, data-base:0x6130A000
(display text omitted)
cisco 7206VXR (NPE-G1) processor (revision 0x00) with 245760K/16384K
bytes of memory.
Processor board ID 15191620
BCM12500 CPU at 700Mhz, Implementation 1, Rev 0.1, 512KB L2 Cache
6 slot VXR midplane, Version 2.0
(display text omitted)
Table 5-1 provides memory specifications and Tabl e 5-2 provides user replaceable memory
configuration information for the NPE-G1. Table 5-3 provides CompactFlash Disk specifications.
Tab l e 5-1 NPE-G1 Memory Specifications
Memory Type Size Quantity Description
Component
Location on the
NPE-G1 Board
SDRAM 128 MB, 256 MB, 512 MB 2 128-MB, 256-MB, or 512-MB SODIMMs1J3 and J4
Boot ROM 512 KB 1Reprogrammable Boot ROM for the ROM
monitor program
U1
Flash memory 16 MB 1Contains the default boot helper (boot
loader) image
U25 and U26