Out-of-stock of the original model, tight budget, or equipment replacement will trigger the need for replacement. To determine whether A can replace B, relying on similar model names is not reliable. You need to go through three levels in order and write the conclusion into a reviewable judgment table.

The first hurdle is packaging and speed

First check whether the physical layer is established: SFP, SFP+, QSFP+, and QSFP28 slots cannot be interchanged. The rate level must be equal to or higher than the link requirement. On the copper cable side, it also depends on whether the length falls within the specification range, for example10G DAC high speed cableIt is only suitable for short-distance interconnection in the same cabinet or adjacent cabinets. Cross-building links cannot use this layer of alternative ideas.

The second level is the margin of the optical port parameters.

Calculate the insertion loss and margin of the actual link and then compare the table: the single-mode G.652 loss per kilometer in the 1310nm window is usually estimated at about 0.35dB, the splice point is 0.05 to 0.1dB, the active connector is reserved at 0.5dB, and the entire link is left with a 3dB margin. The receiving sensitivity and overload point of the alternative model must cover this range, not just the nominal distance.

The third level is coding compatibility and environmental constraints

The same module may behave differently on different brands of equipment: whether the corresponding code is written according to Cisco, Huawei, H3C, ZTE, and Ruijie determines whether the device can recognize the port. This must be verified on the real device with a prototype, and cannot be just explained verbally. Let's look at four more points about the environment layer:

• Check the wide temperature range and power consumption in outdoor cabinet or substation scenarios
• Single-port heating and ventilation in dense rack deployment
• The jumper must be consistent with the adapter interface model and be replaced simultaneously if necessary.LC-LC single mode dual core jumper
• The conclusion is written into a judgment form and signed by both the technical and purchasing parties.

After completing the four passes, there will be a traceable basis for substitution or not. All EB-LINK optical modules can be coded for free according to mainstream equipment brands. Before changing models, you can call 0755-83179002 to request a prototype for actual testing.