Monday, August 31, 2020

(x-post from /r/Cisco) 2 Connections on QSFP-4x10G-LR-S not working

Hey everyone, I am attempting a connection from a N9K-C93180YC-EX to a A9K-24x10GE-TR using a QSFP-4x10G-LR-S optic on the Nexus side broke out into 4 10G LR single mode connections on the A9K side. The issue I am having is that I can only use 2 of the connections on the breakout cable, it does not matter which 2 I use and to what ports they go to, I cannot get more than 2 of the ports to come up. I have tried different cables, different optics on each side, different ports, and even completely different compatible chassis, every single time I have used this optic and these cables I can only get 2 connections to come up. Anybody run into this before? Any help would be greatly appreciated.



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