Just to clarify....you still need to investigate why ports go offline with LINK FAILURE as the cause (check logs on the LTO device and the physical connection). The following "Low Rx Power Warning" is a cosmetic issue that happens when link goes onli...
This is a known software problem (no functional impact). The alarm displays a few minutes after the interface comes up, then clears about 10 minutes later. Solved in NX-OS 4.2(7e) or 5.0.7 and later (CSCtk10527)...--filiph
I assume that you are using the 48-port 8-Gbps Advanced FC module (DS-X9248-256K9) as you referred to the datasheet for that module and that you already reloaded the MDS switch earlier to be in 8G mode:Switch1-MDS9509# sh hardware fabric-modeFabric m...
Helloas there are also other enhancments done, I would recommend upgrading anyway (NX-OS 4.2.3 was released 2009). Please mark question as answered if you are satisfied with the answer. -- filiph
