Link Aggregation Parameters

In an LAG, the port and system priorities of the LAG together determine the port that is preferred to transmit services. This topic describes the definitions of the port ID, port priority, and system priority of an LAG.

Navigation Path

In the NE Explorer, select a board and choose Configuration > Ethernet Interface Management > Ethernet Link Aggregation Management from the Function Tree. Click the Link Aggregation Parameters tab.

Caution

The port ID consists of Port Number and Port Priority. The smallest port ID in the LAG has the priority to aggregate link first.
For different boards, the value ranges of the port and system priorities are different.
The system ID consists of System Priority and System MAC Address. When the system negotiates with the remote system, the system with the smallest ID has the priority to choose the port. In this example, the system refers to the board, and the system MAC address refers to the board MAC address. The factory-set MAC address is globally unique and cannot be modified.

Parameters

Field	Value	Description
Port	For example: PORT3	Displays the port number.
Port Priority	0-65535, in step length of 1 Default: 32768	The Port Priority (Link Aggregation) parameter specifies the priority of the ports in the link aggregation group of the LACP protocol. The port priority can be set. It indicates the priority level of a port to be aggregated. If a port is of higher priority, this port is preferred to carry the services. If a link aggregation group (for example, manual aggregation group) does not run the LACP protocol, it does not take effect after the port priority is set.
System Priority	0-65535, in step length of 1 Default: 32768	The System Priority (Link Aggregation) parameter specifies the priority level of a link aggregation group. It may affect the working state of the member ports in the link aggregation group.
System MAC Address	For example: 00-16-EC-FA-AC-0A	Displays the system MAC address.