组播在MPLS VPN中的一个过渡实现方案

A Transitional Actualizing Scheme for Multicast in MPLS VPN

在组播网络中,即使组播用户数量成倍增长,骨干网络中网络带宽也无需增加,在很多多媒体业务中需要网络组播功能。目前由于MPLS VPN网络中很多PE设备尚不支持组播业务,因此在VPN内部署组播业务时遇到了一定的困难。本文讨论一种可以在现有设备条件下,利用DVMRP隧道解决MPLS VPN组播问题的方案。

In multicast network, even if the number of multicast user has increased a lot, the bandwidth requirement is not needed for increasing. Many multimedia services have much demand on multicast function. Now, many PE devices in MPLS VPN network do not support multicast service, as result, it brings difficulty in multicast service. In this paper, it discusses how to resolve the problem of supplying multicast service in MPLS VPN network by the means of DVRMP tunnel.