H3C LS-3100-52P-OVS-H3 Operation Manual page 54

Selected: a selected port can forward user traffic.
Unselected: an unselected port cannot forward user traffic.
The rate of an aggregate interface is the sum of the selected member ports' rates. The duplex mode of
an aggregate interface is consistent with that of the selected member ports. Note that all selected
member ports use the same duplex mode.
For how the state of a member port is determined, refer to
aggregation mode.
LACP protocol
The Link Aggregation Control Protocol (LACP) is defined in IEEE 802.3ad. It uses link aggregation
control protocol data units (LACPDUs) for information exchange between LACP-enabled devices.
LACP is automatically enabled on interfaces in a dynamic aggregation group. For information about
dynamic aggregation groups, refer to
LACPDUs to notify the remote system (the partner) of its system LACP priority, system MAC address,
LACP port priority, port number, and operational key. Upon receiving an LACPDU, the partner
compares the received information with the information received on other interfaces to determine the
interfaces that can operate as selected interfaces. This allows the two systems to reach an agreement
on which link aggregation member ports should be placed in selected state.
Operational key
When aggregating ports, link aggregation control automatically assigns each port an operational key
based on the port attributes, including the configurations of the port rate, duplex mode and link state.
In a link aggregation group, all member ports in the selected state have the same operation key.
Class-two configurations
Class-two configurations are listed in
member port are different from the class-two configurations, that member port cannot be a selected
port.
Table 1-1 Class-two configurations
Type
Whether a port has joined an isolation group, and the isolation group that the port
Port isolation
belongs to
QinQ enable state (enable/disable), outer VLAN tags to be added, inner-to-outer
QinQ VLAN priority mappings, inner-to-outer VLAN tag mappings, inner VLAN ID
substitution mappings
Permitted VLAN IDs, default VLAN, link type (trunk, hybrid, or access), IP
VLAN
subnet-based VLAN configuration, protocol-based VLAN configuration, tag mode
MAC address learning capability, MAC address learning limit, forwarding of frames
MAC address
with unknown destination MAC addresses after the upper limit of the MAC address
learning
table is reached
Dynamic aggregation mode. An LACP-enabled interface sends
Table 1-1. In an aggregation group, if the configurations of a
Considerations
1-2
Static aggregation mode and Dynamic