Symptom

QoS configuration change to a queuing parameter does not get applied to the data plane. This problem only impacts an ASR1k platform equipped with ESP100 or ESP200 or ASR1001-X, ASR1001-HX, ASR1002-X and ASR1002-HX platforms.

Conditions

policy-map QOS-SCHEDULE-CHILD class QOS-1 priority police cir 500000 class QOS-2 bandwidth remaining percent 5 police cir percent 20 class QOS-3 bandwidth remaining percent 20 random-detect dscp-based class QOS-4 bandwidth remaining percent 3 class class-default bandwidth remaining percent 16 policy-map QOS-SCHEDULE-PARENT class class-default bandwidth remaining ratio 16 shape average 1000000 10000 service-policy QOS-SCHEDULE-VOIP_5 Applied to an interface, then remove the child policy and shape commands for the class-default of the parent policy map. If deletion of the child queues and removal of the shape get combined into the same transaction sent to the datapath, it is possible that the removal of the shaper does not take effect.

Workaround

This is a timing issue how the configuration changes are passed to the data plane of the ASR1K, so adding a delay between removal of the child-policy map from the parent and then delay before removing or changing the parent policy-map class-default queue.

Further Problem Description