Appendix D Configuration Register Information
Displaying the Configuration Register While Running Cisco IOS
Bit 15
Bit 15 enables diagnostic messages and ignores NVRAM contents.
Displaying the Configuration Register While Running Cisco IOS
The configuration register can be viewed by using the show version or show hardware command.
The following is sample output of the show version command from a Cisco 7401ASR router.
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7400 Software
Copyright (c)
Compiled Sat
Image
ROM:System Bootstrap, Version 12.2(1r)DD1, RELEASE SOFTWARE (fc1)
BOOTFLASH:7400 Software
12.2(20010427:125)
router uptime is 17 hours, 2 minutes
System returned to ROM by reload at 01:09:49 UTC Sat Jan 1 2000
System image file is "tftp://000.000.000.000//tftpboot/biff/122_1_DX/c7400- mz.V122_1_DX.5.19.01"
cisco 7401ASR (NSE) processor (revision A) with 245760K/16384K bytes of memory Processor board ID 4294967295
R7000 CPU at 375Mhz, Implementation 39, Rev 3.3, 256KB L2, 2000KB L3 Cache 1 slot ASR midplane, Version 2.0
Last reset from
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
PXF processor tmc is running.
8 Ethernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)
509K bytes of
64256K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes). 8192K bytes of Flash internal SIMM (Sector size 256K). Configuration register is 0x100
Displaying the Configuration Register While Running ROM Monitor
If the bootstrap prompt “>”, the o command displays the virtual configuration register currently in effect. It includes a description of the bits. See the following sample output:
>o
Configuration register + 02x100 at last boot
| Bit# | Configuration register option settings: | |||
15 | Diagnostic mode disabled | ||||
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