Filter
Top Products
31-8
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 31 Troubleshooting
Using Recovery Procedures
Note The break key character is different for each operating system.
On a SUN work station running UNIX, Ctrl-C is the break key.
On a PC running Windows 2000, Ctrl-Break is the break key.
Cisco TAC has tabulated break keys for most common operating systems and an alternative break key
sequence for those terminal emulators that do not support the break keys. See
http://www.cisco.com/warp/public/701/61.html#how-to for that list.
Follow these steps if you have forgotten or lost the switch password.
Step 1 Connect a terminal or PC with terminal emulation software to the console port. For more information,
see the switch hardware installation guide.
Note You can configure your switch for Telnet by following the procedure in the “Accessing the CLI”
section on page 2-9.
Step 2 Set the line speed on the emulation software to 9600 baud.
Step 3 Connect the power cord to the switch, and apply power to the switch.
After the switch performs POST, the switch begins the autoboot process. The boot loader prompts the
user for a break key character during the boot-up sequence, as shown in this example:
***** The system will autoboot in 15 seconds *****
Send a break key to prevent autobooting.
Step 4 When the boot loader prompts you, enter the break key.
This example shows the messages that appear on the console after the user enters a break key:
The system has been interrupted prior to initializing the flash file system.
The following commands will initialize the flash file system, and finish loading the
operating system software:
flash_init
load_helper
boot
After the message appears, the boot loader prompt resumes.
On the Catalyst 2955C-12 and Catalyst 2955S-12 switches, the port 13 LED blinks green, and the
port
14 LED is off during the initial appearance of the boot loader prompt. On the Catalyst 2955T-12
switch, the port 1 LED blinks green, and the port 2 LED is off during the initial appearance of the boot
loader prompt.
Step 5 Initialize the flash file system:
switch# flash_init
Step 6 If you set the console port speed to anything other than 9600, it has been reset to that particular speed.
Change the emulation software line speed to match that of the switch console port.
Step 7 Load any helper files:
switch# load_helper