Link Aggregation Modes - H3C S5120-EI Series Operation Manual

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
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 are not considered
during operational key calculation.
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.

Link Aggregation Modes

Depending on the link aggregation procedure, link aggregation operates in one of the following two
modes:
Static aggregation mode
Dynamic aggregation mode
Static aggregation mode
LACP is disabled on the member ports in a static aggregation group. In a static aggregation group, the
system sets a port to selected or unselected state by the following rules:
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. These ports are selected in the order of
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.
Consider the ports in up state with the same port attributes and class-two configurations as the
reference port as candidate selected ports, and set all others in the unselected state.
Table
Whether a port has joined an isolation group
QinQ enable state (enable/disable), 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
1-1. In an aggregation group, if the configurations of a
Considerations
1-3