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unique-nas-port (Access)


Hierarchy Level


Configure the router to provide a unique value for the NAS-Port attribute (RADIUS attribute 5) of each subscriber. You can configure a NAS-Port value that is unique within the router only, or unique across the different MX routers in the network.



Value for the chassis-id part of NAS-Port attribute. To ensure that NAS-Port values are unique across all MX series routers in the network, you must specify a unique chassis-id for each MX router.

  • Range: 0-127 bits


Number of bits used to uniquely identify the chassis across the MX series routers in the network. All routers must use the same chassis-id-width. If you do not configure a chassis-id-width, the resulting NAS-Port attribute is unique within the router only.

  • Range: 1-7 bits

Required Privilege Level

admin—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 15.1.