It may be a simple question to all, but I want know that we should create first sub interfaces on router for vlan's am I right? Those sub interfaces we can use for vlans in switch right? after that we should encapsulate and assign IP for sub int. but the thing is how we can create sub interfaces on router like for (f0/0)what are those commands and steps.
Please any body can expalin clearly it would be more appreciate.