公开(公告)号：US20150207640A1

公开(公告)日：2015-07-23

申请号：US14668744

申请日：2015-03-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xindong Teng

IPC: H04L12/18 ,  H04L12/913 ,  H04L12/723 ,  H04L29/12

CPC classification number: H04L12/18 ,  H04L12/185 ,  H04L45/507 ,  H04L47/724 ,  H04L61/2069

Abstract: Embodiments of the present invention provide a method for implementing P2MP multicast, a network node, and a system. The method includes: acquiring, by a network-side leaf node, an mLDP label of a downstream user-side leaf node and FEC information from an mLDP mapping message of the downstream user-side leaf node, then sending an mLDP mapping message that includes an mLDP label and the FEC information, to an upstream network-side root node, and generating a forwarding entry; searching for or establishing an RSVP P2MP LSP, allocating a label to the FEC information, and associating a forwarding entry of each network-side leaf node with the label of the FEC information; and sending an mLDP label of the network-side root node and the FEC information to an upstream user-side leaf node, and associating the mLDP label with the RSVP P2MP LSP and the label of the FEC information.

Abstract translation: 本发明的实施例提供了一种用于实现P2MP多播，网络节点和系统的方法。 该方法包括：通过网络侧叶节点从下游用户侧叶节点的mLDP映射消息获取下游用户侧叶节点的mLDP标签和FEC信息，然后发送包括 mLDP标签和FEC信息发送到上游网络侧根节点，并生成转发条目; 搜索或建立RSVP P2MP LSP，向FEC信息分配标签，并将每个网络侧叶节点的转发表项与FEC信息的标签相关联; 向上游用户侧叶节点发送网络侧根节点的mLDP标签和FEC信息，并将mLDP标签与RSVP P2MP LSP和FEC信息的标签相关联。