Specifications

Chapter9 Troubleshooting
Troubleshooting Switch Upgrades
9-12
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
78-6511-05
Failed software
upgrade; switch is
resetting
continuously.
This might be due to a corrupt or incorrect image, or the image in Flash might be
missing. Following these steps to recover if the switch is in a reset loop after or
during the upgrade.
1. Connect the PC to the switch console port.
2. Press the Enter key a few times. Are you seeing a switch: prompt? If not,
go to Step 3. Otherwise, go to Step 4.
3. Disconnect the power cord. Hold down the mode button on the front of the
switch, and plug the power cord back in. All LEDs above all ports should
come on green. Continue to hold down the mode button until the light above
port 1 goes out, and then release the mode button. The prompt should be
switch:.
4. Download the IOS Image File using X-Modem.
After the upgrade,
the switch still
boots up with the
old image.
This happens when either the BOOT parameters are not correct and the switch is
still set to boot from the old image or the upgrade did not go through properly.
Verify the BOOT parameters, and correct them if needed.
• If the BOOT parameters are correct, download the IOS Image File using
TFTP.
• If the switch still boots with the old image, download the IOS Image File
using X-Modem.
Switch not booting
automatically;
needs a manual
boot at the
ROMMON
(
switch: prompt).
The switch boot parameters might be set for manual boot. The switch can be set
to boot automatically by following these steps:
1. Use Telnet to access the switch, or connect the PC to the switch console port.
2. Enter the privileged EXEC mode by entering the enable command at the
switch> prompt.
3. Enter the global configuration mode by entering configure terminal at the
Switch# prompt.
4. Enter no boot manual to tell the switch to boot automatically.
5. Enter end to return to privileged EXEC mode, and save the configuration by
entering the write memory command.
6. Verify the boot parameters by entering show boot. Verify that Manual Boot
is set to no.
Table 9-4 Problems Encountered When Upgrading the Switch (continued)
Problem Suggested Solution