08-17-2016 05:10 AM - edited 03-08-2019 07:02 AM
We installed 2 WS-C3850-12S switches and 2 WS-C3850-24T switches recently.
Stacked 4 of them and stack works fine. However when SFP modules (GLC-SX-MMD=) connected into 12s switches, ports get error disabled randomly. Some of the ports working fine, but others remain in shut state. We changed SFP modules, tried "errdisable detect cause gbic-invalid" command but still no change.
Anyone had same issue or know the reason for this ? I'm sure SFP modules are genuine.
Thank you very much.
08-17-2016 05:46 AM
Hi
what exactly do the sfps say as there vendor on the back , could be bug
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