**Advice Seeking** What do you think about the QoS feature of access NEs?

Dear all, would you please tell me your comments or suggestions on the QoS feature that has been posted? 

1. Which part (traffic classification, priority marking, traffic policing, shaping, congestion avoidance, congestion processing, and HQoS) makes you hard to understand and why?

2. What access NEs are you used in your network deployment? What QoS sub-features are used?

Please see the following QoS feature and QoS Glance, and give your comments or suggestions to me. Thanks.

QoS Feature
http://support.huawei.com/carrier/docview?nid=SE0000611480&path=PBI1-7275726/PBI1-7275742/PBI1-7275777/PBI1-C100469

QoS Glance：
http://support.huawei.com/carrier/docview?nid=SE0000740103&path=PBI1-7275726/PBI1-7275742/PBI1-7275777/PBI1-19904180/PBI1-C100055