Operation Key; Manual Aggregation Group - Huawei Quidway S5600 Series Operation Manual

Operation Manual – Link Aggregation
Quidway S5600 Series Ethernet Switches-Release 1510
After LACP is enabled on a port, LACP notifies the following information of the port to its
peer by sending LACPDUs: priority and MAC address of this system, priority, number
and operation key of the port. Upon receiving the information, the peer compares the
information with the information of other ports on the peer device to determine the ports
that can be aggregated with the receiving port. In this way, the two parties can reach an
agreement in adding/removing the port to/from a dynamic aggregation group.

1.1.3 Operation Key

An operation key of an aggregation port is a configuration combination generated by
system depending on the configurations of the port (rate, duplex mode, other basic
configuration, and management key) when the port is aggregated.
1) The selected ports in a manual/static aggregation group must have the same
operation key.
2) The management key of an LACP-enable static aggregation port is equal to its
aggregation group ID.
3) The management key of an LACP-enable dynamic aggregation port is zero by
default.
4) The member ports in a dynamic aggregation group must have the same operation
key.

1.1.4 Manual Aggregation Group

I. Introduction to manual aggregation group
A manual aggregation group is manually created. All its member ports are manually
added and can be manually removed (it inhibits the system from automatically
adding/removing ports to/from it). Each manual aggregation group must contain at least
one port. When a manual aggregation group contains only one port, you cannot
remove the port unless you remove the whole aggregation group.
LACP is disabled on the member ports of manual aggregation groups, and enabling
LACP on such a port will not take effect.
II. Port status in manual aggregation group
A port in a manual aggregation group can be in one of the two states: selected or
unselected. In a manual aggregation group, the selected ports can transceive user
service packets, but the unselected ports cannot.
The selected port with the minimum port number serves as the master port of the group,
and other selected ports serve as member ports of the group.
In a manual aggregation group, the system sets the ports to selected or unselected
state by the following rules:
The system sets the "most preferred" ports (that is, the ports take most
precedence over other ports) to selected state, and others to unselected state.
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Chapter 1 Link Aggregation Configuration