My employer has your standard 3 layer architecture, however they want both core and distribution routing and switching.
This is so that some networks are routed, and some use only layer 2 between multiple distributions and core.
I was always against letter layer 2 cross a layer 3 devices, but has this standard changed as every device does routing and switching?
I'm also being asked to make the same subnet with same vlan number in two different distributions, routed at the core, tagged across. This essentially turns the core router into a distribution switch. I feel this is against best practices, but am being told to ignore that. Is this something that has become standard elsewhere?