In CE dual-homing networking, to balance the broadcast, unknown unicast, and multicast (BUM) traffic between the CE and PEs, you can configure virtual local area network (VLAN)-based designated forwarder (DF) election.
An Eth-Trunk sub-interface is bound to an EVPN instance created on each PE.
VLAN-based DF election is configured.
For details on how to meet the first condition, see Eth-Trunk Interface Configuration. This section describes how to configure VLAN-based DF election.
Before configuring VLAN-based DF election, bind an Eth-Trunk sub-interface to an EVPN instance and configure EVPN Functions.
Perform the following steps on each PE with the EVPN instance created.
The system view is displayed.
The global EVPN configuration view is created and displayed.
VLAN-based DF election is configured.
The configuration is committed.
After configuring VLAN-based DF election, run the display evpn vpn-instance name vpn-instance-name df result command to view the DF election result in the EVPN instance.