I got asked why we change from VLAN 1 to another VLAN in Cisco networks. What is bad with the default setup? Is VLAN 1 really magical in a Cisco network? When Cisco ships a Catalyst switch to you, there
Native VLAN – why you should change it
The native VLAN (assuming 802.1Q) is a VLAN that is sent untagged by default. The default for Cisco switches is that all ports are in VLAN 1 and if trunking is used VLAN 1 will be sent untagged. VLAN 1