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Hierarchy Level

Release Information

Statement introduced in Junos OS Release 9.3.


Specify the supplicant mode. Only single mode is supported.

This option will authenticate only the first client that connects to a port. All other clients that connect later (802.1x compliant or non-compliant) will be allowed free access on that port without any further authentication. If the first authenticated client logs out, all other users are locked out until a client authenticates again.


single—Sets single mode.

Required Privilege Level

interface—To view this statement in the configuration.

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