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guaranteed-rate

 

Syntax

Hierarchy Level

Release Information

Statement introduced in Junos OS Release 11.1 for the QFX Series.

Statement introduced in Junos OS Release 14.1X53-D20 for the OCX Series.

Description

Configure a guaranteed minimum rate of transmission for a traffic control profile. The sum of the guaranteed rates of all of the forwarding class sets (priority groups) on a port should not exceed the total port bandwidth. The guaranteed rate also determines the amount of excess (extra) port bandwidth that the priority group (forwarding class set) can share. Extra port bandwidth is allocated among the priority groups on a port in proportion to the guaranteed rate of each priority group.

Note

You cannot configure a guaranteed rate for a forwarding class set (priority group) that includes strict-high priority queues. If the traffic control profile is for a forwarding class set that contains strict-high priority queues, do not configure a guaranteed rate.

Default

If you do not specify a guaranteed rate, the guaranteed rate is zero (0) and there is no minimum guaranteed bandwidth.

Note

If you do not configure a guaranteed rate for a traffic control profile, the queues that belong to any forwarding class set (priority group) that uses that traffic control profile cannot have a configured transmit rate. The result is that there is no minimum guaranteed bandwidth for those queues and that those queues can be starved during periods of congestion.

Options

percent percentage—Minimum percentage of transmission capacity allocated to the forwarding class set or logical interface.

Range: 1 through 100 percent

rate—Minimum transmission rate allocated to the forwarding class set or logical interface, in bits per second (bps). You can specify a value in bits per second either as a complete decimal number or as a decimal number followed by the abbreviation k (1000), m (1,000,000), or g (1,000,000,000).

Range: 1000 through 10,000,000,000 bps

Required Privilege Level

interfaces—To view this statement in the configuration.

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