In recent years, the industry has generally paid attention to domestic substitution and diversified supply of optical communication devices. For the project, the real risk is not whether the goods are in the catalog, but whether the verification chain before and after the source change is complete. The following actions are worthy of inclusion in the transformation plan.

Compatibility check: coding, matrix and management protocol

Modules of the same model may behave differently on switches of different brands. Ports not recognized and DDM not reported are common problems. It is recommended to clarify the coding requirements of the computer room first, and then arrange a small batch trial run on the computer. Continuously observe the port identification, link flipping and alarm logs for several working days, and then decide whether to roll it out in batches. All EB-LINK optical modules can be customized with free coding according to brands such as Cisco, Huawei, H3C, ZTE, Ruijie, etc. They are tested one by one and shipped, which can reduce compatibility rework during the transition period.

Optical performance and batch consistency check

• Comparison of transmit and receive power and temperature rise: compared with the baseline of the link in use, without looking at single point values.
• Check the items reported by DDM one by one: the alarm threshold is easy to drift after changing the source, which directly affects the operation and maintenance judgment.
• When conditions permit, send high and low temperature samples for retesting. Don't just look at the normal temperature parameters.
• Keep the batch number and accompanying test report to provide a basis for subsequent traceability

Among several items, power and temperature rise are the easiest to skip, but they directly determine whether the link margin can support the new gear; the baseline data is left in the ledger and can be used for future capacity expansion.

Supply chain check: write long-term supply into the plan

Source switching is not a one-time deal. Firmware maintenance, batch delivery date and equivalent replacement list all need to be confirmed in writing. You must be especially cautious in long-term operation and unattended scenarios such as power and new energy stations. Please refer toCommunication transformation plan for electric power and new energy stations and Optical isolation transformation of communication network in a 220kV substationfile practices in and then compareProduct classificationThe page delineates commonly used gears. By advancing the verification actions according to the three groups of compatibility, performance, and supply, the source replacement process will be more controllable, and the trend dividends can truly fall into the smooth transformation.