C-8
Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
OL-13208-11
Appendix C Troubleshooting Initial Startup Problems
Troubleshooting the Upgrade
An error message similar to the
following example is displayed
when you try to boot the system,
and then the router switches to the
rommon prompt:
Directory an_image.bin not
found
Unable to locate an_image.bin
directory
Unable to load an_image.bin
boot: error executing "boot
harddisk:an_image.bin"
autoboot: boot failed,
restarting
The image file name specified in
the boot command is invalid.
Perform the following steps:
1. Verify that the image file is present in the
harddisk:, bootflash:, or external USB device
(usb0: or usb1:) by using the dir file-system
command at the rommon prompt.
2. When you run the dir file-system command, if a
message similar to "Please reset before
continuing" is displayed, reconfigure the
configuration-register to 0x0 and then run the
reset command to allow the router to enter the
rommon prompt without reattempting to boot
using an invalid image.
rommon> dir harddisk:
Please reset before continuing <<<<<
rommon> confreg 0x0
rommon> reset
3. Boot the router from the rommon prompt by
using a command similar to the following
example:
rommon>
BOOT=harddisk:asr1000rp1-ipbasek9.03.05.01
.S.152-1.S1.bin
4. To save the current environment variable setting,
run the sync command as follows:
rommon> sync
5. Ensure that autoboot has been enabled by using
the confreg 0x2102 command at the rommon
prompt, and then run the reset command at the
same prompt.
If there is no valid image in either the local file
system or the external file system, you can run the
boot tftp: command to install the image that is on the
TFTP server. To do this, ensure that the management
Ethernet interface is physically connected to the
default gateway, configure the ROMmon variables
with the appropriate values, and then run the boot
tftp: command as shown in the following example:
rommon >
IP_SUBNET_MASK=255.255.255.0
TFTP_SERVER=192.0.2.2
TFTP_FILE=asr1000rp1-ipbasek9.03.05.01.S.152-1
.S1.bin
DEFAULT_GATEWAY=192.0.2.1
IP_ADDRESS=192.0.2.26
rommon > boot tftp:
Table C-5 Upgrade-Related Troubleshooting Tips (continued)
Symptom Cause Corrective Action
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