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2-19
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 2 Troubleshooting Installs, Upgrades, and Reboots
Troubleshooting Cisco SAN-OS Software System Reboots
Recovery from the loader> Prompt on Supervisor-2 Modules
Caution This procedure uses the init system command, which reformats the file system of the device. Be sure
that you have made a backup of the configuration files before you begin this procedure.
The
loader> prompt is different from the regular switch# prompt.
• The CLI command completion feature does not work at this prompt and may result in undesired
errors. You must type the command exactly as you want the command to appear.
• The ICMP stack is not supported, so you cannot ping the TFTP server.
• The TFTP server must be configured with the IP address of the default gateway (rather than any
other IP address on the defined subnet.
Tip Use the help command at the loader> prompt to display a list of commands available at this prompt or
to obtain more information about a specific command in that list.
To recover a corrupted kickstart image (system error state) for a switch with a single supervisor module,
follow these steps:
Step 1 Enter the local IP address for the switch at the loader> prompt, and press Enter.
loader> net --ip=172.16.1.2
Step 2 Specify the subnet mask.
loader> net --nm= 255.255.255.0
Step 3 Specify the IP address of the default gateway.
loader> net --gw=172.16.1.1
Step 4 Boot the kickstart image file from the required server.
loader> boot tftp://172.16.10.100/m9500-kickstart-3.0.bin
In this example, 172.16.10.100 is the IP address of the TFTP server, and m9500-kickstart-3.0.bin
is the name of the kickstart image file that exists on that server.
The
switch(boot)# prompt indicates that you have a usable Kickstart image.
Step 5 Issue the init system command at the switch(boot)# prompt.
switch(boot)# init system
Caution Be sure that you have made a backup of the configuration files before you issue this command.
Step 6 Follow the procedure specified in the “Recovery from the switch(boot)# Prompt” section on page 2-21.
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