A technician is working on a Layer 2 switch and notices that a %CDP-4-DUPLEX_MISMATCH message keeps appearing for port G0/5. What command should the technician issue on the switch to start the troubleshooting process?
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Last Updated: May 9, 2026
IT Exam Items Repository › Category: CCNA › A technician is working on a Layer 2 switch and notices that a %CDP-4-DUPLEX_MISMATCH message keeps appearing for port G0/5. What command should the technician issue on the switch to start the troubleshooting process?
A technician is working on a Layer 2 switch and notices that a %CDP-4-DUPLEX_MISMATCH message keeps appearing for port G0/5. What command should the technician issue on the switch to start the troubleshooting process?
- show cdp neighbors
- show ip interface brief
- show interface g0/5
- show cdp
Explanation: The %CDP-4-DUPLEX_MISMATCH message indicates that the local interface and its connected neighbor have conflicting duplex settings. To start troubleshooting, the technician must verify the operational status and configuration of the specific port mentioned in the error. The show interface g0/5 command provides detailed information, including whether the port is currently operating in full-duplex or half-duplex mode, allowing the technician to identify the mismatch.
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