Chapter 2 NPE-175 and NPE-225 Overview

NPE-175 and NPE-225 Memory Information

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-175 and NPE-225 Memory Information

To determine the memory configuration of your NPE, use the show version command.

The following example shows an NPE-225 installed in a Cisco 7206VXR router:

router(boot)# show version

Cisco Internetwork Operating System Software

IOS (tm) 7200 Software (C7200-BOOT-M), Released Version 12.0(19990124:222541) [biff-nightly 115]

Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Mon 15-Feb-99 21:50 by biff

Image text-base:0x600088F8, data-base:0x6064C000

(display text omitted)

cisco 7206VXR (NPE225) processor with 57344K/8192K bytes of memory. R527x CPU at 262Mhz, Implementation 40, Rev 10.0, 2048KB L2 Cache 6 slot VXR midplane, Version 2.0

(display text omitted)

Table 2-1provides memory specifications, Table 2-2provides memory configurations for the NPE-175, and Table 2-3provides memory configurations for the NPE-225.

Table 2-1

NPE-175 and NPE-225 Memory Specifications

 

 

 

 

 

 

 

 

 

 

 

 

Component

 

 

 

 

 

Location on the

 

 

 

 

 

NPE-175 and

Memory Type

 

Size

Quantity

Description

NPE-225 Board

 

 

 

 

 

 

SDRAM

 

64 or 128 MB

1 configurable

DIMM

U15

 

 

 

bank with 1

 

 

 

 

 

SDRAM slot

 

 

 

 

 

 

 

 

Boot ROM

 

512 KB

1

OTP ROM for the ROM monitor

U1

 

 

 

 

program

 

 

 

 

 

 

 

Primary cache

 

16 KB (instruction),

RM5270 processor, primary internal

U4

 

 

16 KB (data)

 

cache

 

 

 

 

 

 

 

 

 

32 KB (instruction),

RM5271 processor, primary internal

U4

 

 

32 KB (data)

 

cache

 

 

 

 

 

 

Secondary cache

2 MB

4 x 256 x 18 bits =

RM527x processor, unified external

U5, U6, U7, U81

 

 

 

64 bit plus 4 parity

cache

 

 

 

 

bits

 

 

 

 

 

 

 

 

1. Located on the processor engine board.

Network Processing Engine and Network Services Engine Installation and Configuration

 

OL-4448-12

2-5

 

 

 

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Cisco Systems manual NPE-175 and NPE-225 Memory Information, Component, Location on