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Hierarchy Level


Enable the use of hierarchical schedulers. If you do not include this statement, the interfaces on the router cannot use hierarchical interfaces.


To enable hierarchical scheduling on MX80 and MX104 routers, configure the hierarchical-scheduler statement at each member physical interface level of a particular aggregated Ethernet interface as well as at that aggregated Ethernet interface level. On other routing platforms, it is enough if you include this statement at the aggregated Ethernet interface level.



For MPC/MIC subscriber interfaces and interface sets running over aggregated Ethernet on MX Series routers, form a hierarchical relationship between the CoS scheduler nodes at level 1, level 2, and level 3.

maximum-hierarchy-levels number

Set the maximum number of hierarchy levels.

  • Range: 2 through 4

  • Default:3

Required Privilege Level

interface—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 8.5.