Default forwarding class and drop probability on bridged interfaces

To reference a forwarding-class in any QoS policy, the forwarding-class must first be explicitly mapped to an output queue. For information about mapping the named forwarding classes to named queues, see Named queues and forwarding classes.

On bridged interfaces, you can configure the default forwarding class and drop probability for input packets arriving on a subinterface that do not match any classification rule.

Configure default drop probability and forwarding class

# info qos interfaces interface ethernet-1/1 input classifiers default
    qos {
        interfaces {
            interface ethernet-1/1 {
                input {
                    classifiers {
                        default {
                            forwarding-class test-fc
                            drop-probability medium
                        }
                    }
                }
            }
        }
    }