The lacp e-trunk system-id command configures a Link Aggregation Control Protocol (LACP) system ID for a member Eth-Trunk interface in an E-Trunk (LACP E-Trunk system ID for short).
The undo lacp e-trunk system-id command restores the default LACP E-Trunk system ID.
By default, the LACP E-Trunk system ID in the system view is the bridge MAC address.
| Parameter | Description | Value |
|---|---|---|
| system-id mac-address |
Specifies an LACP E-Trunk system ID. A smaller system ID indicates a higher priority. |
The value is a 12-digit hexadecimal number, in the format of H-H-H. Each H is 4 digits. If an H contains fewer than 4 digits, the left-most digits are padded with zeros. For example, e0 is displayed as 00e0. An LACP system ID cannot be all 0s. If the value is all Fs, the LACP system ID is restored to the default. |
Usage Scenario
When an E-Trunk consists of Eth-Trunk interfaces working in static LACP mode, each member Eth-Trunk interface and the connected peer Eth-Trunk interface use LACP E-Trunk system priorities to determine the priority of the device at either end of the Eth-Trunk link. The device with the higher priority functions as the LACP Actor and determines which member interfaces in its Eth-Trunk interface are active based on the interface priorities. The other device selects the member interfaces connected to the active member interfaces on the Actor as active member interfaces.
If a member Eth-Trunk interface in an E-Trunk has the same LACP system priority as its connected Eth-Trunk interface, run the lacp e-trunk system-id command to configure an LACP E-Trunk system ID. In this situation, LACP system IDs are used to determine the priority of the device at either end of the Eth-Trunk link. The device with the higher priority then selects active member interfaces in its Eth-Trunk interface, and the other device selects the interconnected member interfaces to be active member interfaces.Precautions
The LACP E-Trunk system ID configured in the system view takes effect on all Eth-Trunk interfaces that are added to the E-Trunk. The LACP E-Trunk system ID configured in an Eth-Trunk interface view takes effect only on the Eth-Trunk interface. If the lacp e-trunk system-id command is run in the system view and the lacp system-id command is in run in an Eth-Trunk interface view, the LACP system ID configured in the Eth-Trunk interface view takes precedence.