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Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 3 NPE-300 and NPE-400 Overview
NPE-300 and NPE-400 Memory Information
• Primary, secondary, tertiary 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, but faster access than tertiary
cache.
• RAM—random-access memory
• RISC—reduced instruction set computing
• ROM—read-only memory
• SIMM—single in-line memory module
• 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
• SRAM—static random-access memory
• 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-300 and NPE-400 Memory Information
To determine the memory configuration of your NPE-300, use the show version command.
The following example of the show version command shows an NPE-300 installed in a Cisco 7206VXR
router:
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-JS-M), Released Version 12.0(19980705:021501)
Copyright (c) 1986-1998 by cisco Systems, Inc.
Compiled Tue 25-Aug-98 04:01 by biff
Image text-base: 0x600088C4, data-base: 0x60FA6000
(display text omitted)
cisco 7206VXR (NPE300) processor with 44x1024K/20480K bytes of memory.
R7000 CPU at 262Mhz, Implementation 39, Rev 1.0, 265KB L2, 2048KB L3 Cache
Six slot VXR midplane, Version 2.255
(display text omitted)
The following example of the show version command shows an NPE-400 installed in a Cisco 7206VXR
router:
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-P-M), Released Version 12.1(20000622:181759)
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Thu 22-Jun-00 11:18 by BIFF
Image text-base: 0x60008950, data-base: 0x60BD8000
(display text omitted)