In the following networking, LACP packets are used to negotiate aggregation parameters to determine the link aggregation modes of active and inactive interfaces. In static LACP mode, you need to manually create an Eth-Trunk interface and add Ethernet interfaces to the Eth-Trunk interface, and LACP selects active and inactive interfaces by negotiating aggregation parameters using LACP packets.
In manual load balancing mode, traffic can be evenly distributed among all the member interfaces. You can also set different weights for the member interfaces so that uneven load balancing can be carried out. That means, certain interfaces that have greater weights transmit more traffic.
An Eth-Trunk interface in manual 1:1 master/backup mode contains only two member interfaces, one master and the other backup. In normal situations, only the master interface forwards traffic. If the master interface fails, the backup interface takes over traffic.
To enable the communication between devices in different VLANs, you can create Eth-Trunk sub-interfaces on the Eth-Trunk interfaces that connect a router to switches, configure 802.1Q encapsulation and an IP address on each sub-interface, and associate each sub-interface with a VLAN. In this manner, communication between VLANs can be implemented through the router and switches.
This section provides an example for configuring an E-Trunk on PEs to implement device-level reliability when a CE is dual-homed to the PEs through Eth-Trunk interfaces.