the link aggregation control protocol (lacp) provides a standardized means for exchanging information between partner systems on a link to allow their link aggregation control instances to reach agreement on the identity of the link aggregation group to which the link belongs, move the link to that link aggregation group, and enable its transmission and reception functions in an orderly manner. in conclusion, link aggregation lets you group up to eight consecutive ports into a single dedicated connection. this feature can expand bandwidth to a device on the network. lacp operation requires full-duplex mode, more detail information refers to ieee 802.3ad.

    1 aggregator setting

   

    system priority: a value used to identify the active lacp. the switch with the lowest valuehas the highest priority and is selected as the active lacp.

    (1) group id: there are seven trunk groups to providedconfigure. choose the "group id" and click "get".

    (2) lacp: if enable, the group is lacp static trunking group. if disable, the group is local static trunking group.

    all ports support lacp dynamic trunking group. if connecting to the device that also supports lacp, the lacp dynamic trunking group will be created automatically.

    (3) work ports: allow max four ports can be aggregated at the same time. if lacp static trunking group, the exceed ports is standby and able to aggregate if work ports fail. if local static trunking group, the number must be as same as the group member ports.

    (4) select the ports to join the trunking group. allow max four ports can be aggregated at the same time.

    (5) if lacp enable, you can configure lacp active/passive status in each ports on state activity page.

    (6) click apply.

    2 aggregator information

    when you are setting lacp aggregator, you can see relation information here.

    (1) this page is no group active. lacp don’t working.

   

    (2) this page is static trunking group.

   

    3 state activity

    active (selected): the port automatically sends lacp protocol packets.

    passive (not selected): the port does not automatically sends lacp protocol packets, and responds only if it receives lacp protocol packets from the opposite device.

    (1) a link having either two active lacp ports or one active port can perform dynamic lacp trunking. a link has two passive lacp ports will not perform dynamic lacp trunking because both ports are waiting for lacp protocol packets from the opposite device.

    (2) if you are active lacp actor, when you select trunking port, the active status will be created automatically.