H3C S7500E-X Configuration Manual page 39

Figure 7 Setting the state of a member port in a dynamic aggregation group
Meanwhile, the system with the higher system ID is aware of the aggregation state changes on the
peer system. The system sets the aggregation state of local member ports the same as their peer
ports.
When you aggregate interfaces in dynamic mode, follow these guidelines:
•
A dynamic link aggregation group preferably chooses full-duplex ports as the Selected ports.
The group will choose only one half-duplex port as a Selected port when either of the following
conditions exist:
None of the full-duplex ports can be chosen as Selected ports.
Only half-duplex ports exist in the group.
•
To ensure stable aggregation and service continuity, do not change the operational key or
attribute configurations on any member port.
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