26
Step 6
Select
State
as
Enable
, and then select
Type
as
Static
.
Figure 4-11 Link aggregation
Step 7
Click
Submit
.
5.3.2 LACP Mode
Background Information
LACP (Link Aggregation Control Protocol) is used to realize link dynamic convergence and
convergence separation which is based on IEEE 802.3ad standard. The both parties of convergence
devices converge the matched links together, receive and send data through LACPDU message
interacting convergence information. The protocol can automatically add and delete ports in the
convergence group, which is equipped with high flexibility and provides the capability of load
balance.
After enabling the LACP function of the port, the port will inform the opposite end of the system
priority, system MAC, port priority, port number and operation Key (decided by physical properties,
upper layer protocol information and management Key of the port).
The end with higher priority of the Switch will dominate convergence and convergence separation,
and the Switch priority is decided by system priority and system MAC. The Switch with lower system
priority value has higher priority. And the Switch with lower system MAC has higher priority when
the system priority value is the same. The end with higher device priority will select convergence
port according to port priority, port number and operation Key. Only the ports with same operation
Key can be selected into one convergence group, and the port with lower port priority value will be
selected by priority in the same convergence group. When the port priority is the same, the port with
the smaller number will be selected. The selected ports will converge together to receive and send
data after both parties interact convergence information.
The configuration parameter of LACP protocol mainly includes State, Operation key, Timeout and
Activity.
Table 4-6 Description of LACP configuration parameters
Parameters
Description
State
Including Enable and Disable, the ports which enable only LACP protocol
can realize LACP negotiation, and then it might form convergence link.
