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Troubleshooting Interface Down Problems

This document describes how to troubleshoot the fault that an interface is down. An interface may go down in many situations. To check the interface status, run the display interface command and focus on the current state field. The following symptoms are possible indications of this problem: An interface is in error-down state. An interface is in down state and a prompt message is displayed. An interface is in down state and no prompt message is displayed. Based on the preceding symptoms, this document analyzes the possible causes of the interface down problem and provides the corresponding troubleshooting methods and solutions.

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Updated: 2020-11-03

Document ID: EDOC1100086959

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