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CF-925
Cisco IOS Configuration Fundamentals Command Reference
July 2008
Catalyst 6500 Series Switches and Cisco 7600 Series Routers
This example shows how to display the configuration of the system hardware, the software version, the
names and sources of configuration files, and the boot images:
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) c6sup2_rp Software (c6sup2_rp-JSV-M), Version 12.1 (nightly.E020626) NIG
HTLY BUILD
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Wed 26-Jun-02 06:20 by
Image text-base: 0x40008BF0, data-base: 0x419BA000
ROM: System Bootstrap, Version 12.1(11r)E1, RELEASE SOFTWARE (fc1)
Router uptime is 2 weeks, 8 hours, 48 minutes
Time since Router switched to active is 1 minute
System returned to ROM by power-on (SP by power-on)
System image file is "sup-bootflash:c6sup22-jsv-mz"
cisco Catalyst 6000 (R7000) processor with 112640K/18432K bytes of memory.
Processor board ID SAD06210067
R7000 CPU at 300Mhz, Implementation 39, Rev 3.3, 256KB L2, 1024KB L3 Cache
Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
3 Virtual Ethernet/IEEE 802.3 interface(s)
48 FastEthernet/IEEE 802.3 interface(s)
381K bytes of non-volatile configuration memory.
16384K bytes of Flash internal SIMM (Sector size 512K).
For more details on memory requirements, see the document “How
to Choose a Cisco IOS® Software Release” on Cisco.com.
Configuration register is value
For example:
Configuration register is 0x2142
(will be 0x2102 at next reload)
Shows the current configured hex value of the software
configuration register. If the value has been changed with the
config-register command, the register value that will be used at the
next reload is displayed in parenthesis.
The boot field (final digit) of the software configuration register
dictates what the system will do after a reset.
For example, when the boot field of the software configuration
register is set to 00 (for example, 0x0), and you press the NMI
button on a Performance Route Processor (PRP), the user-interface
remains at the ROM monitor prompt (rommon>) and waits for a
user command to boot the system manually. But if the boot field is
set to 01 (for example, 0x1), the system automatically boots the first
Cisco IOS image found in the onboard Flash memory SIMM on the
PRP.
The factory-default setting for the configuration register is 0x2102.
This value indicates that the router will attempt to load a Cisco IOS
software image from Flash memory and load the startup
configuration file.
Table 146 show version Field Descriptions (continued)
Field Description
