Yes, it is possible.
Below is the sample configuration on WM controller and Extreme switch
On WM Controller
interface port-channel1
switchport mode trunk
switchport trunk native vlan 20
switchport trunk native tagged
switchport trunk allowed vlan 11-12,20
no shut
interface ge<> //Mentioned all physical ports
channel-group 1
On Switch:
enable sharing 1:5 grouping 1:5-8, 2:22 algorithm address-based L2
