Allied Telesis AT-S39 - Manual (Page 82)

Chapter 9: Port Trunking Commands
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are the same.
You should also check to be sure that the ports are untagged
members of the same VLAN. You cannot create a trunk of ports that
are untagged members of different VLANs.
Examples
The following command creates a port trunk of Ports 3 through 6 on the
switch and assigns it the name “load22.” Since no load distribution is
specified, MAC source address/destination address is assigned by
default:
create switch trunk=load22 port=3-6
The following command creates a port trunk of Ports 11 through 14 on
the switch and assigns it the name “rm44.” The load distribution is MAC
source address:
create switch trunk=rm44 port=11-14 select=macsrc