here is my network and one of my co-worker disable VLAN 1 but he does not think that we need a NATIVE VLAN our our network. Can someone please clarify if NATIVE is a requirement for my network or not? I've two 9372 stack as my switch/router. I've lots of servers with file server, access database, SQL Database, Oracle Database. Cisco call managers with Cisco IP phone and workstations. Please look at my network diagram and tell me if NATIVE VLAN is requirement for my network to work correctly between the different trunk to different building.
