When connecting 2 Cisco interfaces togather you should consider to leave it on auto speed and auto duplex. But if you want to fix the speed/duplex then you must do on both ends.
I have also noticed your IOS on both switches are very old, consider an IOS upgrade. To download the IOS from Cisco.com you will need a CCO account or you may need to speak to your Hardware supplier/Cisco partner.
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...