This paper presents two models of QoS: IntServ model and DiflServ model, and two QoS models provided by MPLS-based VPN: pipe model and hose model.

• 论文介绍了QoS的IntServ模型和DiffServ模型两种模型,以及QoS与MPLS VPN 结合的管道模型和软管模型。