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class (Forwarding Classes)

Syntax

class { class-name { queue-num queue-number <no-loss>;}}

Hierarchy Level

Release Information

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

No-loss option introduced in Junos OS Release 12.3 for the QFX Series.

Description

Map one or more forwarding classes to a single queue. You can map unicast forwarding classes to a unicast queue (0 through 7) and multidestination forwarding classes to a multicast queue (8 through 11). The queue to which you map a forwarding class determines if the forwarding class is a unicast or multicast forwarding class.

Note: If you are using Junos OS Release 12.2, use the default forwarding-class-to-queue mapping for the lossless fcoe and no-loss forwarding classes. If you explicitly configure the lossless forwarding classes, the traffic mapped to those forwarding classes is treated as lossy (best effort) traffic and does not receive lossless treatment.

If you are using Junos OS Release 12.3 or later, the default configuration is the same as the default configuration for Junos OS Release 12.2, and the default behavior is the same (the fcoe and no-loss forwarding classes receive lossless treatment). However, if you explicitly configure lossless forwarding classes, you can configure up to six lossless forwarding classes by specifying the no-loss option. If you do not specify the no-loss option in an explicit forwarding class configuration, the forwarding class is lossy. For example, if you explicitly configure the fcoe forwarding class and you do not include the no-loss option, the fcoe forwarding class is lossy, not lossless.

Options

class-name —Name of the forwarding class.

The remaining statement is explained separately.

Required Privilege Level

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

 

Related Documentation

 

Published: 2014-07-23

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