They can not be configured for this MTU. On WAN interfaces you will have a maximum value of 4470 Bytes, which are possible.
The 9216 Bytes are possible on GigabitEthernet interfaces. Regarding your FE interface: it depends on the hardware in use. You can try to set it to 4470 as well, and see whether it will be accepted and better test, if it is working.
Generally I would only recommend to adjust your MTU to values larer than 1500 Bytes, if there are networking requirements behind. Usually they come from other LAN equipment wich is capable of setting larger MTU.
Be aware however, that you might get into troubles, when accessing the Internet, because there you will have a max of 1500 Bytes. Once path MTU discovery fails you might get connection timeouts and connectivity problems with some Web servers out there.
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...