I am getting a vlan mismatch all though I have configured the native vlan on both interfaces as vlan 30
interface FastEthernet0/22
switchport trunk native vlan 30
switchport trunk allowed vlan 10,20,30
switchport mode trunk
This is the configuration on one of the two interfaces on the layer 2 switch the below is one of four interface configurations on the layer 3 switch.
interface FastEthernet0/21
switchport trunk native vlan 30
switchport trunk allowed vlan 10,20,30
switchport trunk encapsulation dot1q
spanning-tree guard root
I don't see why this is not work I am obviously missing something here?
I will add the PKT. file below as well.