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Configuration guidelines
Follow these guidelines when configuring a link aggregation group:
In an aggregation group, the port to be a selected port must be the same as the reference port in port
attributes, and class-two configurations. To keep these configurations consistent, you should configure
the port manually.
Reference port: Select a port as the reference port from the ports that are in up state and with the same
class-two configurations as the corresponding aggregate interface. The selection order is as follows:
full duplex/high speed, full duplex/low speed, half duplex/high speed, and half duplex/low speed,
with full duplex/high speed being the most preferred. If two ports with the same duplex mode/speed
pair are present, the one with the lower port number wins out.
Port attribute configuration includes the configuration of the port rate, duplex mode, and link state.
For more information about class-two configurations, see “Class-two configurations”.
To guarantee a successful static aggregation, ensure that the ports at the two ends of each link to be
aggregated are consistent in the Selected/Unselected state. To guarantee a successful dynamic
aggregation, ensure that the peer ports of the ports aggregated at one end are also aggregated. The
two ends can automatically negotiate the selected state of the ports.
Removing a Layer 2 aggregate interface also removes the corresponding aggregation group. At the
same time, all member ports leave the aggregation group.
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