Information Technology Reference
In-Depth Information
Booting: Router Hangs After ROM Monitor Initializes
Symptom:
When a user is booting a Cisco 7000 series, AGS+, AGS, ASM-CS, MGS, IGS, or CGS
router from ROM, the system hangs after the ROM monitor initializes.
Table 3-16 outlines the problems that might cause this symptom and describes solutions to those
problems.
Table3-16 Booting: Router Hangs After ROM Monitor Initializes
Possible Problem
Solution
EPROM
1
size
setting is incorrect
Power down the system.
1.
Inspect EPROM size jumpers. Refer to the hardware
installation and maintenance publication for your router to
determine the proper setting.
2.
Move jumpers as required.
3.
continues
Configuration
register is not set
correctly
1.
Check your configuration settings (boot ROM jumpers and
software configuration). If no jumper is set at bit 0, and no
other boot field is defined, you must reconfigure your system
so that it can boot properly.
2.
To enable your router to boot properly, do one of the
following:
•
Configure the software configuration register of the router
using the
config-register value
global configuration
command. (This applies to the IGS, Cisco 2500, Cisco 3000,
and Cisco 7000 platforms running Cisco IOS Release 10.0 or
later in the EPROM.)
•
Set the boot ROM jumper to permit booting.
•
Include the correct boot system global configuration
commands to boot the system.
•
Set bit 0 to a value of 1 to force booting from ROM.
Refer to the Cisco IOS configuration guides and command
references, as well as your hardware installation and
maintenance publications, for more information about
configuring your router for the various booting options.
1.
EPROM = erasable programmable read-only memory
Booting: Router Is Stuck in ROM Monitor Mode
Symptom:
Router is stuck in ROM monitor mode. When a user is booting a router from ROM, the
system boots into ROM monitor mode but does not boot the complete system image.
