WS-C2960X-48FPD-L , L is for LANBASE Software Image so it should support basic static routing.
WS-C2960X-48FPD-LL , LL is for LANLITE Software Image that do not support basic routing, and I am not sure, but it cannont be upgraded to LANBASE image [it was the case for the first version of C2960 LANLITE].
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...