铁路数据网MPLS VPN跨域组播方案设计与仿真

Design and Simulation of Cross-domain Multicast Scheme of MPLS VPN for Railway Data Network

目前广州局管内铁路数据网采用基于MD方式配置ASM模式的组播VPN方案,完成域内组播业务互通。随着铁路数据网业务的快速发展,不同铁路局之间组播业务需要相互访问。为了满足跨域组播的需要,深入分析目前铁路数据网的组网结构,结合MPLS VPN及组播的相关原理,提出基于Option B方式跨域NG MVPN的组播设计方案,并进行仿真实验,确定方案具备可行性。

At present,the railway data network under the management of Guangzhou Bureau adopts the multicast VPN solution based on MD mode to configure ASM mode to complete the interconnection of multicast services in the domain.With the rapid development of railway data network services,multicast services between different railway bureaus need to access each other,in order to meet the needs of cross-domain multicast,a deep analysis of the current railway data networks is conducted.Combined with MPLS VPN and multicast related principles,a multicast design scheme based on Option B mode cross-domain NG MVPN is proposed,and simulation experiments are carried out to confirm the feasibility of the scheme.