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Hierarchy Level

  • For platforms with ELS:

  • For platforms without ELS:

Release Information

Statement introduced in Junos OS Release 9.3 for EX Series switches.

Statement introduced in Junos OS Release 13.2 for the QFX Series.

Hierarchy level [edit switch-options] introduced in Junos OS Release 13.2X50-D10. (See Using the Enhanced Layer 2 Software CLI for information about ELS.)

Statement introduced in Junos OS Release 14.1X53-D20 for the OCX Series.


Configure the switch to forward all unknown unicast packets in a VLAN or on all VLANs to a particular interface.


Before you can configure unknown unicast forwarding within a VLAN, you must first configure that VLAN.

The remaining statements are explained separately. See CLI Explorer.


Unknown unicast packets are flooded to all interfaces that belong to the same VLAN.

Required Privilege Level

system—To view this statement in the configuration.

system-control—To add this statement to the configuration.