Configuring statistics collection for subinterfaces

To enable VOQ statistics collection on a subinterface, use the voq-statistics command. When voq-statistics is set to true, qos_mgr attempts to allocate VOQ statistics collection resources to that subinterface from the global pool.

If voq-statistics is explicitly set to false, qos_mgr deallocates any assigned resources for that subinterface and returns the resources to the global pool.

Configure VOQ statistics collection for a subinterface

--{ candidate shared default }--[  ]--
# info with-context qos interfaces interface ethernet-1/2.1 voq-statistics
    qos {
        interfaces {
            interface ethernet-1/2.1 {
                voq-statistics true
            }
        }
    }

Display VOQ statistics allocation status for an interface

To confirm whether VOQ statistics collection resources are allocated to an interface, use the voq-statistics-allocation-status state command. If the allocation of VOQ statistics to the interface is successful, the status is shown as complete. If the allocation is not successful (as a result of resource exhaustion), the status is shown as none. 

--{ candidate shared default }--[  ]--
# info with-context from state qos interfaces interface ethernet-1/2 voq-statistics-allocation-status
    qos {
        interfaces {
            interface ethernet-1/2 {
                voq-statistics-allocation-status complete
            }
        }
    }

Display VOQ statistics per subinterface

To display VOQ statistics per subinterface, use the same command as for interface VOQ statistics: info from state qos interfaces interface output queues queue queue-statistics aggregate-statistics virtual-output-queue.

--{ candidate shared default }--[  ]--
# info from state qos interfaces interface ethernet-1/1.1 output queues queue unicast-0 queue-statistics aggregate-statistics virtual-output-queue 1
queue unicast-0 {
        queue-statistics {
            aggregate-statistics {
                virtual-output-queue 1 {
                    queue-depth {
                        high-threshold-bytes 0
                    }
                    low-drop-probability {
                        transmitted-packets 188337
                        transmitted-octets 263671800
                        dropped-packets 218160358
                        dropped-octets 305424501200
                    }
                    medium-drop-probability {
                        transmitted-packets 0
                        transmitted-octets 0
                        dropped-packets 0
                        dropped-octets 0
                    }
                    high-drop-probability {
                        transmitted-packets 0
                        transmitted-octets 0
                        dropped-packets 0
                        dropped-octets 0
                    }
                }
            }
        }
    }