公开(公告)号：US20070025276A1

公开(公告)日：2007-02-01

申请号：US11296149

申请日：2005-12-07

申请人： John Zwiebel ,  Ali Sajassi ,  Dino Farinacci ,  Daniel Alvarez

发明人： John Zwiebel ,  Ali Sajassi ,  Dino Farinacci ,  Daniel Alvarez

IPC分类号： H04L12/28

CPC分类号： H04L45/00 ,  H04L12/1836 ,  H04L12/185 ,  H04L45/16 ,  H04L45/48 ,  H04L45/50

摘要： A mechanism that provides congruent forwarding paths for unicast and multicast data traffic over a service provider core network includes issuing, by a receiver edge node, a request to join a multicast tree structure. A unicast path from the receiver edge node to a source node of the provider network is then established using a special message that contains an identifier. The identifier allows the unicast path through the core network to be aligned with the multicast tree structure. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

摘要翻译： 通过服务提供商核心网络为单播和组播数据流量提供一致的转发路径的机制包括由接收者边缘节点发出加入多播树结构的请求。 然后使用包含标识符的特殊消息来建立从接收器边缘节点到提供商网络的源节点的单播路径。 标识符允许通过核心网络的单播路径与多播树结构对齐。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US20070025277A1

公开(公告)日：2007-02-01

申请号：US11296550

申请日：2005-12-07

申请人： Ali Sajassi ,  Dino Farinacci ,  John Zwiebel ,  Daniel Alvarez

发明人： Ali Sajassi ,  Dino Farinacci ,  John Zwiebel ,  Daniel Alvarez

IPC分类号： H04L12/28

CPC分类号： H04L45/00 ,  H04L45/26

摘要： A provider edge (PE) node of a network operates to send a trace path message over the network to a receiver PE node, the trace path message recording a list of intermediate nodes of a unicast path from the PE node to the receiver PE node; and receive a join message initiated from the receiver PE node, the join message using the list to propagate to the source PE node through the intermediate nodes such that a branch of a multicast tree is aligned with the unicast path. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

摘要翻译： 网络的提供者边缘（PE）节点操作以通过网络向接收者PE节点发送跟踪路径消息，跟踪路径消息记录从PE节点到接收者PE节点的单播路径的中间节点列表; 并接收从接收者PE节点发起的加入消息，使用该列表的加入消息通过中间节点传播到源PE节点，使得多播树的分支与单播路径对齐。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

公开(公告)号：US20070091891A1

公开(公告)日：2007-04-26

申请号：US11258641

申请日：2005-10-26

申请人： John Zwiebel ,  Dino Farinacci

发明人： John Zwiebel ,  Dino Farinacci

IPC分类号： H04L12/56

CPC分类号： H04L12/185 ,  H04L45/16

摘要： Systems and methods for implementing a bidirectional multicast protocol with two types of join messages are disclosed. The two types of join messages, upstream joins and downstream joins, are used to control the Reverse Path Forwarding (RPF) interface is added to the outgoing interface list for a particular multicast group, which in turn controls when multicast packets will be forwarded to the rendezvous point. One method involves receiving a multicast packet addressed to multicast group G. The method inhibits the multicast packet from being forwarded via the RPF interface, unless the outgoing interface list corresponding to the multicast group G already identifies the RPF interface. The RPF interface can be added to the outgoing interface list in response to reception of a downstream join message via the RPF interface, as well as in response to monitoring, via the RPF interface, an upstream join message on a shared network segment.

摘要翻译： 公开了用于实现具有两种类型的连接消息的双向多播协议的系统和方法。 两种类型的连接消息，上游连接和下游连接用于控制反向路径转发（RPF）接口被添加到特定多播组的出站接口列表，这反过来控制何时将组播数据包转发到 会合点。 一种方法是接收到组播组G的组播报文。除非与组播组G对应的出接口列表已经识别出RPF接口，否则该方法禁止通过RPF接口转发组播报文。 响应于通过RPF接口接收到下游加入消息，RPF接口可以被添加到出接口列表中，并且响应于通过RPF接口监视共享网段上的上游加入消息。

公开(公告)号：US20070165632A1

公开(公告)日：2007-07-19

申请号：US11331707

申请日：2006-01-13

申请人： John Zwiebel

发明人： John Zwiebel

IPC分类号： H04L12/56

CPC分类号： H04L45/00 ,  H04L45/16

摘要： A method and network device are described for providing a rendezvous point (RP) functionality in protocol independent multicast (PIM) communications in a communications network. The method may comprise defining an RP sub-network identified by an RP address, the RP sub-network comprising a plurality of network devices and designating one of the plurality of network devices to perform RP functionality based on a designation rule. A rendezvous point (RP) facility for a sparse mode protocol independent multicast (PIM) system on a data communications network. The RP facility comprises a sub-network which includes a plurality of routers having respective individual IP addresses, one of the routers having an active RP address and thus being a designated router (DR) for performing RP processing. A selection component may automatically select, in response to a failure event associated with the DR, another router as new DR.

摘要翻译： 描述了一种用于在通信网络中的协议无关组播（PIM）通信中提供会合点（RP）功能的方法和网络设备。 该方法可以包括定义由RP地址标识的RP子网络，RP子网络包括多个网络设备，并指定多个网络设备中的一个基于指定规则执行RP功能。 用于数据通信网络上的稀疏模式协议独立组播（PIM）系统的会合点（RP）设施。 RP设备包括一个子网络，该子网络包括具有各自的IP地址的多个路由器，其中一个路由器具有活动的RP地址，并且因此是用于执行RP处理的指定路由器（DR）。 响应于与DR相关联的故障事件，选择组件可以自动选择另一个路由器作为新的DR。