公开(公告)号：US20130077624A1

公开(公告)日：2013-03-28

申请号：US13241869

申请日：2011-09-23

申请人： Srikanth Keesara ,  Richard T. Strong ,  Deborah E. Fitzgerald

发明人： Srikanth Keesara ,  Richard T. Strong ,  Deborah E. Fitzgerald

IPC分类号： H04L12/56

CPC分类号： H04L12/4662 ,  H04L12/4633

摘要： Techniques disclosed herein include systems and methods for improving multicast traffic operations in a Shortest Path Bridging (SPB) network by conveying bridging domain information of an incoming interface (IIF) when transporting multicast traffic over the SPB network. Techniques disclosed herein include modifying encapsulation packet header information of existing Mac-In-Mac fields to convey additional information that can be interpreted at edge nodes by modifying edge node interpretation of multicast data. Specifically, the value of the I-SID in the BMAC-DA field can be set to be different from the I-SID value in the I-TAG field. Carrying the L2 VSN I-SID value in the I-TAG allows the Egress BEBs to determine which VLAN/L2 VSN/Bridging-Domain of the IIF is in use, and then modify or preserve underlying header information accordingly.

摘要翻译： 本文公开的技术包括当通过SPB网络传输多播流量时，通过传送输入接口（IIF）的桥接域信息来改善最短路径桥接（SPB）网络中的多播业务操作的系统和方法。 本文公开的技术包括修改现有Mac-In-Mac字段的封装分组报头信息，以传送可以通过修改多播数据的边缘节点解释来在边缘节点处解释的附加信息。 具体地说，BMAC-DA字段中的I-SID的值可以被设置为与I-TAG字段中的I-SID值不同。 在I-TAG中携带L2 VSN I-SID值允许出口BEB确定IIF的哪个VLAN / L2 VSN /桥接域正在使用，然后相应地修改或保留底层头信息。