Confirm if the fiber optic cable and optical module are properly installed. Based on typical issues encountered with optical modules in daily switch applications, this document summarizes basic troubl...
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The switch s optical module is lit but not working - SMB AI-Systems & High-Speed Interconnect [PDF]
If the issue is with the optical module, use a blower (e.g., a rubber bulb) or strong wind (e.g., from a fan) to blow or suck the TX and RX ports of the optical module, then test the connection status of the
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What tools are needed for SFP troubleshooting? The main tools needed will always be an optical power meter, a fiber optic cleaning kit, a visual fault locator, and access to the switch CLI
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The first thing you should do is re-plug the optical module into the switch slot and make sure it is firmly inserted. If the problem persists, please check the compatibility of the optical module
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Learn how to check SFP module health on Cisco switches. This guide covers essential CLI commands (show inventory, DOM), fixes for "unsupported
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IOS-XE version 16 looks like it should fix the bug, but they don''t have all of the features that I need, so I''m not upgrading it yet. Just want to help others if anyone else has this issue.
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Based on typical issues encountered with optical modules in daily switch applications, this document summarizes basic troubleshooting steps for resolving common faults:
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Learn how to fix SFP issues fast: no link light, link flapping, detection errors, compatibility problems, and optical power checks.
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Replace the SFP module with a known good SFP module if available. Try installing it in another SFP port if available to see if the problem persists or goes away.
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Learn how to check SFP module health on Cisco switches. This guide covers essential CLI commands (show inventory, DOM), fixes for "unsupported transceiver" errors, and interpreting optical power levels.
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Learn how to troubleshoot common SFP module issues including physical faults, hardware damage, compatibility, and configuration errors. This guide provides step-by-step solutions to maintain
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Check whether the optical modules are Huawei-certified ones. If not, contact the supplier of the optical modules. If possible, remove and reinstall the optical modules to check whether the fault is rectified.
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