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Summit X670 QSFP+ in 4x10G mode gives no link with a 6-leg MPO-to-LC breakout cable
On an Extreme Summit X670 two QSFP+ ports were configured as 4x10G, the ports were set to 10000 full duplex with auto off and VLANs assigned, but a breakout cable with an MPO connector to six LC connectors produced no link on the QSFP+ sie or on the SFP+ side. Hardware involved: Extreme Summit…
