Configuring a Logical Bandwidth Policer

Logical bandwidth policers are used to apply the same shaping rate limit on logical interfaces as on physical interfaces. The feature is supported only for interface filters and policers and on IQ PICs.

To apply a policer to a logical interface, include the logical-bandwidth-policer statement in the policer at the [edit firewall policer] hierarchy level.

The policer must be applied at the logical interfaces level and reference a valid shaping-rate statement at the class-of-service hierarchy level.

Shaping can be configured in a hierarchical fashion for logical bandwidth policers. From highest to lowest priority, the reference rate for a logical bandwidth policer is one of the following:

• The shaping rate on the logical unit
• The shaping rate on the physical interface (port)
• The physical interface (port) speed

For non-logical-bandwidth policers, if there is a shaping rate configured on the physical interface, that rate is used as the reference rate instead of the physical interface (port) speed.

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