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Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 4 NSE-1 Overview
NSE-1 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.
NSE-1 Memory Information
To determine the memory configuration of your NSE-1, use the show version command.
The following example shows an NSE-1 installed in a Cisco 7206VXR router:
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-P-M), Released Version 12.0
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Wed 22-Dec-99 08:37 by
Image text-base:0x60008900, data-base:0x60B58000
(display text omitted)
cisco 7206VXR NSE-1 processor with 57344K/8192K bytes of memory.
R7000 CPU at 262Mhz, Implementation 39, Rev 1.0, 256KB L2 Cache
6 slot VXR midplane, Version 2.0
(display text omitted)
Table 4-1 provides memory specifications and Table 4-2 provides user replaceable memory
configuration information for the NSE-1.
Ta ble 4-1 NSE-1 Memory Specifications
Memory Type Size Quantity Description
Component Location
on the NSE-1 Board
SDRAM 128 MB or 256 MB 1 128-MB or 256-MB DIMMs U15
Boot ROM 512 KB 1 OTP
1
ROM for the ROM monitor program U1
Primary cache 16 KB (instruction),
16
KB (data)
— RM7000 processor, internal cache U22