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hierarchical-scheduler (Subscriber Interfaces on MX Series Routers)

Syntax

Hierarchy Level

Description

Configure hierarchical scheduling options on the interface.

The statement is supported on the following interfaces:

  • MIC and MPC interfaces in MX Series routers

  • GRE tunnel interfaces configured on physical interfaces hosted on MIC or MPC line cards in MX Series routers

To enable hierarchical scheduling on MX Series 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.

Options

implicit-hierarchy

Configure four-level hierarchical scheduling. When you include the implicit-hierarchy option, a hierarchical relationship is formed between the CoS scheduler nodes at level 1, level 2, level 3, and level 4. The implicit-hierarchy option is supported only on MPC/MIC subscriber interfaces and interface sets on MX Series routers.

maximum-hierarchy-levels number

Specify the maximum number of hierarchical scheduling levels allowed for node scaling, from 2 through 4 levels. The default number of levels is 3. The maximum-hierarchy-levels option is supported on MPC/MIC or EQ DPC subscriber interfaces and interface sets on MX Series routers.

  • If you set maximum-hierarchy-levels to 2, interface sets are not allowed. In this case, if you configure a level 2 interface set, you generate Packet Forwarding Engine errors.

  • If you do not include the maximum-hierarchy-levels option, keeping the default number of hierarchy levels at 3, interface sets can be at either level 2 or level 3, depending on whether the member logical interfaces within the interface set have a traffic control profile. If any member logical interface has a traffic control profile, then the interface set is a level 2 CoS scheduler node. If no member logical interface has a traffic control profile, the interface set is at level 3.

CAUTION:

MPC3E, 32x10GE MPC4E, and 2x100GE + 8x10GE MPC4E MPCs support only two levels of scheduling hierarchy. When enabling hierarchical scheduling on these cards, you must explicitly set maximum-hierarchy-levels to 2.

Required Privilege Level

view-level—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 10.1.

implicit-hierarchy option added in Junos OS Release 13.1.

Support on GRE tunnel interfaces configured on physical interfaces on MICs or MPCs in MX Series routers added in Junos OS Release 13.3.

Support for up to four hierarchy levels added in Junos OS Release 16.1.

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