Load balancing method: dst-src-mac(1):destination and source mac address; dst-src-ip(2):destination and source ip address; src-mac(3):source mac address; dst-mac(4):destination mac address; src-ip(5):source ip address; dst-ip(6):destination ip address; dst-src-mac-ip(7):destination and source mac address, ip address; enhance-profile(8):enhance-profile; dst-src-mac-vlan(9):destination and source mac address, vlan; dst-src-ip-port(10):destination and source ip address, port; dst-src-mac-ip-port(13):destination and source mac address, ip address, port; dst-src-mac-vlan-normal(14):destination and source mac address, vlan, normal; dst-src-ip-port-normal(15):destination and source ip address, port, normal; dst-src-mac-ip-port-normal(16):destination and source mac address, ip address, port, normal. If there is no member in the port group, the value is -1. If you set value to the load balance method that your switch is not unsupported, it will return error. Please see the handbook and make sure that the load balance method is supported by your switch.