Summary of Link Aggregation Configuration Tasks
The device supports link aggregation in the manual load balancing mode and Link Aggregation Control Protocol (LACP) mode. In a stack, local traffic is preferentially forwarded by the Eth-Trunk.
Table 3-1 lists the link aggregation configuration tasks.
| Item | Description | Task |
|---|---|---|
Configure link aggregation in manual load balancing mode. |
In manual load balancing mode, you must manually create an Eth-Trunk and add member interfaces to the Eth-Trunk. All active links forward data and evenly load balance traffic. The manual load balancing mode is often used when the remote device does not support LACP. |
|
Configure link aggregation in LACP mode. |
In LACP mode, you must manually create an Eth-Trunk and add interfaces to the Eth-Trunk. LACP determines active interfaces by negotiating parameters in LACPDUs. LACP provides backup links and ensures high reliability of member links. |
|
Configure preferential forwarding of local traffic in a stack. |
On a network where the stack and Eth-Trunk are used, configure the Eth-Trunk to preferentially forward local traffic to increase bandwidth use efficiency between stack devices and improve traffic forwarding efficiency. |
Configuring Preferential Forwarding of Local Traffic on an Eth-Trunk in a Stack |
Create an Eth-Trunk Layer 3 sub-interface. |
Layer 3 Sub-interfaces can be configured on a Layer 3 Eth-Trunk. When Layer 3 devices connect to Layer 2 devices in different VLANs through the Layer 3 Eth-Trunk, Layer 3 sub-interfaces must be configured on the Eth-Trunk to identify packets from different VLANs and to enable users in these VLANs to communicate with each other. |