A network technician investigates an issue where a newly installed link between two switches is not coming up. After verifying that both switches are powered on and the ports are enabled, the technician suspects a transceiver mismatch. Each switch supports multi-mode fiber connections. Which of the following could be the reason the link is not working?
One of the switches is using a slightly higher firmware version
Both switches are using 1000Base-SX transceivers
The switches are configured for different VLANs
One switch uses a 1000Base-LX transceiver and the other uses a 1000Base-SX transceiver
Mismatched transceivers, such as using a multi-mode transceiver with a single-mode transceiver, can cause the connection to fail due to the differences in the way light signals are transmitted and received. Each type of transceiver is designed to work with a specific fiber type (single-mode or multi-mode), and they are not interchangeable without specific intermodal devices.
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What are 1000Base-LX and 1000Base-SX transceivers?
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What is the difference between multi-mode and single-mode fiber?
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