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Don't know for sure what's the cause of your issue, but some hardware requires a minimum IOS version and/or feature set to utilize. Also, some hardware requires additional configuration commands to enable the hardware.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...