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Network card not recognizing optical module

A network device does not detect an optical module; therefore, first take a full physical check. Although a non-Huawei-certified optical module can be identified and used, its reliability and stability cannot be. Based on typical issues encountered with optical modules in daily switch applications, this document summarizes basic troubleshooting steps for resolving common faults: 1. Check compatibility between the optical module and switch Most switch brands have specific compatibility requirements. This type of optical module failure mainly includes port not UP, port status is UP but do not receive or send messages, port frequently up or down and CRC error. This issue is often due to multiple factors, including. There are multiple ways that optical modules fail in common ways that can interrupt network connectivity.