H3C S5500-SI Series Operation Manual page 51

When a Marker Response Protocol Data Unit (PDU) is received from the peer or the timer expires,
the device starts to redistribute service traffic on all the new link aggregation member ports in
selected state.
Currently, the S5500-SI series Ethernet switches support returning Marker Response PDUs only after
dynamic link aggregation member ports receive Marker PDUs.
Operational key
When aggregating ports, link aggregation control automatically assigns each port an operational key
based on port attributes, including the port rate and duplex mode.
In an aggregation group, all selected ports are assigned the same operational key.
Class-two configurations
The contents of class-two configurations are listed in
different from the aggregate interface in the class-two configurations cannot be a selected port.
Table 1-1 Class-two configurations
Type
Port isolation
QinQ
VLAN
MAC address learning
Some configurations are called class-one configurations. Such configurations, for example, GVRP
and MSTP, can be configured on aggregate interfaces and member ports but will not affect the
select state of link aggregation member ports.
The change of a class-two configuration setting may affect the select state of link aggregation
member ports and thus the ongoing service. To prevent unconsidered change, a message warning
of the hazard will be displayed when you attempt to change a class-two setting, upon which you
can decide whether to continue your change operation.
Whether a port has joined an isolation group
QinQ enable state (enable/disable), TPID values in VLAN tags, outer
VLAN tags to be added, inner-to-outer 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
subnet-based VLAN configuration, protocol-based VLAN configuration,
tag mode
MAC address learning capability, MAC address learning limit, forwarding
of frames with unknown destination MAC addresses after the upper limit
of the MAC address table is reached
1-3
Table 1-1. In an aggregation group, a member port
Considerations