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| Fail Safe Commands 241 |
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Problems | Possible Cause | Solution |
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No connection and the | Incorrect Ethernet cable, | Check pinout and replace if necessary |
port LED is off | e.g., crossed rather than |
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| straight cable, or vice |
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| versa, split pair (incorrect |
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| twisting of pairs) |
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| Fiber optical cable | Change if necessary. Check Rx and Tx on fiber optic |
| connection is reversed | cable |
| Bad cable | Replace with a tested cable |
| Wrong cable type | Verify that all 100 Mbps connections use a Cat 5 cable |
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Lost Password |
| See “Fail Safe Commands”on page 241. |
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Fail Safe Commands If the switch does not operate normally or if the firmware becomes corrupted, you can reset the switch and use the fail safe commands to resume operation by restoring the factory defaults, restoring the default user name and password, or downloading new firmware.
To enter fail safe mode:
1Connect to the console interface as described in “Command Line Interface Management” on page 22.
2Reboot the switch.
3After the
Press Ctrl+C within 5 seconds to get into FailSafe mode
At this point, press
You will then be presented with options listed below.
■initialize – Deletes all stored configuration information, including IP address and address configuration mode, user names, and passwords. It then resets the switch to factory default settings, and restarts the system.
Resetting the switch to factory defaults erases all your settings. You will need to reconfigure the switch after you reset it.
■password recovery – Deletes all user names and passwords, restores the default user names and passwords – “admin” with no password, and “monitor” with the same password, and then restarts the system.