Checking the environment of a switch:
- show environment temp = what are the temperatures of the intake(s) and outlet(s)
- show environment power = are the PSUs still working fine?
- show environment fan = are the fans still working fine?
Checking for errors and signal degradation
- show interface fc1/10 counters = show all standard counters for port fc1/10
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show interface fc1/10 counters details = show the detailed counters for port fc1/10
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show interface counters = show all standard counters for all ports
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show interface detail-counters = show the detailed counters for all ports
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show interface detail-counters | i CRC = show the detailed counters for all ports which contain the text “CRC”
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show interface transceiver calibrations = show the specs of all SFPs
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show interface transceiver details = show the specs and power details of all SFPs
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show interface transceiver details | i “x Power” = show the current Rx/Tx power of all SFPs
Common knowledges dictates that fiber optice patches need to be cleaned with proper equipment to prevent unnecessary signal loss. See this blog post for more details on how and why to keep optic cables clean.
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