First, inspect the optical module appearance for physical damage, cracks, missing components, poor solder joints, or burn marks. Although co-packaged optics (CPO) and on-board optics (OBO) have been proposed to increase bandwidth density, these approaches introduce significant challenges in field serviceability, scalability, and manufacturability, making them difficult to deploy widely in hyperscale environments. Dust prevention and cleaning: Details determine success or failure 1) Unused protection: When an optical module is not in use, a dust cap must be installed to prevent dust from entering the port and causing poor contact. If it is not a Huawei-certified optical module, replace it with a Huawei-certified optical module. Does the module need to be inserted and removed at a certain speed or for a certain duration to reproduce the issue? Has the issue been reproduced across multiple system units? Is the module transmitter connected to INA? Is the customer using any custom configuration on the LOS/INT# pin? Or is it. All of the SFP questions that have not been addressed and the QSFP troubleshooting problems clearly add up to managing so many support tickets.
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