1st switch an interface can be configured as:
spanning-tree portfast
spanning-tree bpduguard enable
switchport mode trunk
switchport access vlan 100
switchport trunk native vlan 100
switchport trunk allowed vlan 80,100
2nd switch, same model and firmware the only way I can configure it with the same result is this:
spanning-tree portfast
spanning-tree bpduguard enable
switchport mode trunk
switchport access vlan 100
switchport trunk native vlan 100
switchport trunk allowed vlan remove 1-79,81-99,101-4094
I tried switchport trunk allowed vlan 80,100 but it gives me a "Bad Parameter". I would rather have the first option as it looks cleaner to me. On the http gui they both look the same.
Trunk configuration from switch to switch is the same deal as well.
1st switch:
switchport mode trunk
switchport access vlan 100
switchport trunk native vlan 100
switchport trunk allowed vlan 2-3,10,20,30,40,50,80,100,111,120
2nd switch:
switchport mode trunk
switchport access vlan 100
switchport trunk native vlan 100
switchport trunk allowed vlan remove 1,4-9,11-19,21-29,31-39,41-49
switchport trunk allowed vlan remove 51-79,81-99,101-110,112-119
switchport trunk allowed vlan remove 121-4094