Hi,
I hope the below helps, 
!
    interface  GigabitEthernetx/x
         switchport
     switchport trunk encapsulation dot1q
     switchport mode trunk
     mtu 9216
     no ip address
     spanning-tree cost 10
     channel-protocol lacp
     channel-group 10 mode active
    !
    interface GigabitEthernetX/Y
      switchport
     switchport trunk encapsulation dot1q
     switchport mode trunk
     mtu 9216
     no ip address
     spanning-tree cost 10
     channel-protocol lacp
     channel-group 10 mode active
    !
    interface Port-channel10
     description LAG to Extreme 670
     switchport
     switchport trunk encapsulation dot1q
     switchport mode trunk
     mtu 9216
     no ip address
     load-interval 30
     spanning-tree cost 10
=========================
Extreme  Port 1 and 2 
=========================
                          enable sharing 1 grouping 1,2 algorithm  address-based L2 lacp        
    ======================================================
            
Thanks
Ian