Monitoring CoS Forwarding Classes

To view the current assignment of CoS forwarding classes to queue numbers on the system, select Monitor > Class of Service > Forwarding Classes in the J-Web interface or enter the following CLI command:

show class-of-service forwarding-class

Note: After you make changes to the configuration in this window, you must commit the changes immediately for them to take effect. To commit all changes to the active configuration, select Commit Options > Commit. See Using the Commit Options to Commit Configuration Changes (J-Web Procedure) for details about all commit options.

Table 57 summarizes key output fields for CoS forwarding classes.

Table 57: Summary of Key CoS Forwarding Class Output Fields



Additional Information

Forwarding Class

Names of forwarding classes assigned to queue numbers. By default, the following forwarding classes are assigned to queues 0 through 3:

  • best-effort—Provides no special CoS handling of packets. Loss priority is typically not carried in a CoS value, and RED drop profiles are more aggressive.
  • expedited-forwarding—Provides low loss, low delay, low jitter, assured bandwidth, and end-to-end service.
  • assured-forwarding—Provides high assurance for packets within specified service profile. Excess packets are dropped.
  • network-control—Packets can be delayed but not dropped.


Queue number corresponding to the forwarding class name.

By default, four queues, 0 through 3, are assigned to forwarding classes.