Cisco Equipment Operations - CCIE Routing and Switching Exam Certification Guide - page 62

Foundation Topics

Infrastructure
This section reviews router CPU and memory components, such as NVRAM, flash, and RAM
memory. For the test, you need to be familiar with the location of configuration files and IOS
images.

Central Processing Unit (CPU)
Most Cisco routers have the Motorola 68000 series or Orion RISC (R4700) microprocessors.
The CPU is the brain of the system. It runs route algorithms, exec processes, route filtering,
network management, and so on. Some processes, such as Open Shortest Path First(OSPF),
task the CPU with large computations.

The CPU type can be checked with the show version command. Example 3-1 shows a Cisco
MC3810 using the Motorola MPC860 processor.

show version Command Used to Check Processor Type

Example 3-1

Router>show version
Cisco Internetwork Operating System Software
IOS (tm) MC3810 Software (MC3810-A2ISV5-M), Version 12.0(7)XK1, EARLY DEPLOYMENT
RELEASE SOFTWARE (fc1)
TAC:Home:SW:IOS:Specials for info
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Wed 15-Mar-00 11:49 by phanguye
Image text-base: 0x00023000, data-base: 0x00B97D30

ROM: System Bootstrap, Version 11.3(1)MA1, MAINTENANCE INTERIM SOFTWARE
ROM: MC3810 Software (MC3810-WBOOT-M), Version 11.3(1)MA1, MAINTENANCE INTERIM
SOFTWARE

Router uptime is 1 week, 4 days, 23 hours, 1 minute
System returned to ROM by power-on
System image file is "flash:mc3810-a2isv5-mz.120-7.XK1.bin"

Cisco MC3810 (MPC860) processor Cisco MC3810 (MPC860) processor (revision 04.06) with 28672K/4096K bytes of memory.

Processor board ID 07548638
PPC860 PowerQUICC, partnum 0x0000, version A03(0x0013)
Channelized E1, Version 1.0.
Bridging software.
X.25 software, Version 3.0.0.