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Command to set the SFP to loopback mode

reslercarter46
Level 1
Level 1

Hi all,

I have Cisco Nexus 9xxx switch and 100G SR4 QSFP AOC breakout module. I want to do BERT test at each of the 4 lanes so I want to tell the switch to set the QSFP in loopback mode (whatever comes in the RX goes out in TX) then I have 25G BERT with a SFP+ module that I launch into the RX legs of the QSFP and check the error rate coming out of the TX legs.

I wonder if any of you can show me what I need to do after config t to set the QSFP to loopback?

Thank you

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