Link Aggregation Modes

Link aggregation modes include the static aggregation mode and the dynamic aggregation mode. Aggregation groups are categorized into static aggregation groups and dynamic aggregation groups.

Static Aggregation Mode

In static aggregation mode, the LACP protocol of the member ports of the devices at the two ends is in the disabled status. In the static aggregation group of the local device, set the selected and unselected status for the member ports by following the guidelines as described below:

Figure 1-1 Setting the Status of Member Ports in Static Aggregation Mode

Dynamic Aggregation Mode

In dynamic aggregation ports, a port can join in a dynamic aggregation group in two modes, active or passive.

• If the duplex mode of the port is full duplex:

If the port joins in a dynamic aggregation group in active mode, the LACP protocol is enabled for the port.

If the port joins in a dynamic aggregation group in passive mode, the LACP protocol is disabled for the port. After it receives the LACPDU packets from the peer port, the LACP protocol is enabled.

• If the duplex mode of the port is half duplex, no matter the port joins in a dynamic aggregation group in either mode, the LACP protocol is disabled for the port.

In the dynamic aggregation group, set the selected and unselected status for the member ports by following the guidelines as described below:

First determine the device with a better system ID. Then the device determines the statuses of the member ports of the devices at the two ends. The device with the better system ID sets the selected and unselected status for the member ports by following the guidelines as described below:

Figure 1-2 Setting the Status of Member Ports in Dynamic Aggregation Mode