IS
In JunOS 20.x for QFX Switches Juniper Networks has introduced licensing of 802.1q tunneling:
{master:0}[edit]
minotaur@asw8-sp.ki# show | compare
[edit interfaces ae10 unit 10]
+ input-vlan-map push;
+ output-vlan-map pop;
{master:0}[edit]
minotaur@asw8-sp.ki# commit check
[edit interfaces ae10 unit 10]
'input-vlan-map'
warning: requires 'dot1q-tunneling' license
configuration check succeeds
Be ready to meet licensing of VLANs next year in JunOS 21.x.