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25G AOC between Nexus 93180YC-FX and Arista 7050SX3 stays notconnect until FEC is set to rs-ieee
The poster was connecting a Cisco Nexus 93180YC-FX to an Arista 7050SX3 with a 25G AOC sold as Cisco/Arista compatible. The Nexus detects the transceiver, but 'show interface status' reports the port as not connected. A 10G AOC from the same vendor works fine between the two switches, and the same…