NetRename

NetRename[net,"old"->"new"] gives a net in which the name old for a layer is replaced with new.

NetRename[net,NetPort["old"]->NetPort["new"]] gives a net in which the name old for an input or output port is replaced with new.

NetRename[net,{rule1,rule2,…}] performs all renamings specified by the rulei.

NetRename[net,f] uses a function f to map existing layer names to new names.

NetRename[net,rules,levelspec] renames layers and ports nested at level levelspec.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.