HP 5820X series Configuration Manual page 47

Compare the system ID (comprising the system LACP priority and the system MAC address). The
1.
system with the lower LACP priority value wins out. If they are the same, compare the system MAC
addresses. The system with the lower MAC address wins.
The system with the smaller system ID selects the port with the smallest port ID as the reference port.
2.
A port ID comprises a port LACP priority and a port number. The port with the lower LACP priority
value wins out. If two ports have the same LACP priority, the system compares their port numbers.
The port with the smaller port number wins.
Setting the aggregation state of each member port
After the reference port is selected, the system with the lower system ID sets the state of each member port
in the dynamic aggregation group on its side as shown in
Figure 12 Set the state of a member port in a dynamic aggregation group
Figure 12.
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