I need some help removing a Serial Subinterface 0/0.1. I entered "no interface serial 0/0.1" however, when I enter the "show ip interface brief" command I get this. Why doesn't the subinterface remove from the interface list.
Serial0/0 unassigned YES NVRAM down down
Serial0/0.1 unassigned YES NVRAM deleted down
Serial0/0.2 unassigned YES unset deleted down
Thank You in Advance