ELS: All VLAN stuff under "ehernet-switching-options" moved under "vlans"
Enhanced Layer 2 Software (ELS) is a standardized Layer 2 configuration syntax that
addresses customer requests for a common Layer 2 configuration for Junos OS
Enhanced Layer 2 Software (ELS) provides a uniform CLI for configuring and monitoring Layer 2 features on QFX Series switches, EX Series switches,
and other Juniper Networks devices, such as MX Series routers. With ELS, you configure Layer 2 features in the same way on all these Juniper Networks devices.