TP-Link T1600G-18TS Configuration Manual page 139

Configuring LAG
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lacp system-priority pri
Specify the system priority for the switch.
To keep active ports consistent at both ends, you can set the priority of one device to be
higher than that of the other device. The device with higher priority will determine its active
ports, and the other device can select its active ports according to the selection result of
the device with higher priority. If the two ends have the same system priority value, the end
with a smaller MAC address has the higher priority.
pri: System priority. The valid values are from 0 to 65535, and the default value is 32768. A
smaller value means a higher device priority.
interface {fastEthernet port | r ange fastEthernet port-list | gigabitEthernet port | range
gigabitEthernet port-list }
Enter interface configuration mode.
channel-group num mode { active | passive }
Add the port to an LAG and set the mode as LACP.
: The group number of the LAG.
num
mode: Specify the LACP mode. Here you need to select LACP mode: active or passive.
In LACP, the switch uses LACPDU (Link Aggregation Control Protocol Data Unit) to
negotiate the parameters with the peer end. In this way, the two ends select active ports
and form the aggregation link. The LACP mode determines whether the port will take the
initiative to send the LACPDU.
passive: The port will not send LACPDU before receiving the LACPDU from the peer end.
active: The port will take the initiative to send LACPDU.
For successful LACP negotiation, make sure at least one end of the link is configured
Note:
as Active.
lacp port-priority pri
Specify the Port Priority. The port with higher priority in an LAG will be selected as the active
port. If two ports have the same priority value, the port with a smaller port number has the
higher priority.
pri : Port priority. The valid values are from 0 to 65535, and the default value is 32768. A
smaller value means a higher port priority.
show lacp sys-id
Verify the global system priority.
show lacp internal
Verify the LACP configuration of the local switch.
end
Return to privileged EXEC mode.
copy running-config startup-config
Save the settings in the configuration file.
LAG Configuration
Configuration Guide 116