Using Native VLAN on Trunk Ports?

[oneciscokid]

My understanding of using native vlans on trunk ports is so that the frames are not tagged, they're transmitted untagged and received untagged. But where is the application use of this, why would you want it untagged? Currently, I have vlans being sent across a trunk without a native vlan being set and haven't ran into any problems.

 

[vipergg]

If you don't set a native vlan it is assumed vlan 1 is the native and will use that .