IP network is evolving in the direction of IPv6,and it is a key issue for future IPv6 network to provide reliable network services and QoS guaranteeing. The QoS functions about IPv6 are introduced.

• IP网络将向着IPv6的方向发展,提供可靠的网络服务并保证服务质量是未来IPv6网络需要解决的关键问题。