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I have a C1000-8T-2G-L and C1000-24T-4G-L switches running IOS ver 15.2(7)E4. When I plug in brand new GLC-LH-SMD sfp's they are recognized at first but when I do a reload or plug the sfp into a different port, I get %GBIC_SECURITY_CRYPT-4-VN_DATA_CR...
Hey Peter, I had to work closely with my vendor's tech support and did some further, extensive troubleshooting. Apparently, the GLC-LH-SMD SFPs they were sending me had a revision date of 7/2001 which could very well be incompatible with these switch...
I think I figured it out. I unboxed another C1000-8T-2G-L switch and it bricked a brand new SFP; recognized it at first then "bad crc" error when unplugging\replugging in. I unboxed a C1000-16T-2G-L and used a brand new SFP without any issues unplugg...
Thanks for the response. I did try in global config more but the "service unsupported-transceiver" command still isn't recognized. The "gbic-invalid" command is recognized but my SFPs still get bricked and say "unsupported". Note, I do plug these int...
Thank you for the response. I tried upgrading the 8T switch to ver E5 but instead of recognizing a brand new SFP right away, it gives me "bad crc" and it's now bricked. Down to 2 SFPs.
