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1. 发明授权

US08953446B1 Load balancing multicast join requests over interior and exterior BGP paths in a MVPN 有权
标题翻译：通过MVPN中的内部和外部BGP路径负载平衡组播加入请求
公开(公告)号：US08953446B1
公开(公告)日：2015-02-10
申请号：US13332214
申请日：2011-12-20
申请人： Lili Wang , Rahul Aggarwal , Yakov Rekhter
发明人： Lili Wang , Rahul Aggarwal , Yakov Rekhter
IPC分类号： H04J3/14 , H04L12/28 , H04J3/26 , G06F15/16 , G06F15/173
CPC分类号： H04L12/4641
摘要： A network device receives a join request on a downstream interface, wherein the join request specifies a source device and multicast group, wherein the network device is positioned within a core network of a multicast virtual private network (MVPN) that transmits multicast traffic between the source device and a plurality of receivers associated with customer sites. The network device selects an upstream router to which to send the join request from among a plurality of upstream routers on paths leading to the source device, so as to avoid creating a join request loop in the core network. At least one of the upstream routers is positioned on an Exterior Border Gateway Protocol (EBGP) path toward the source device, and at least one of the upstream routers is positioned on an Interior BGP (IBGP) path toward the source device. The network device sends the join request to the selected upstream device.
摘要翻译：网络设备在下游接口上接收加入请求，其中所述连接请求指定源设备和多播组，其中所述网络设备位于组播虚拟专用网（MVPN）的核心网内，所述多播虚拟专用网（MVPN）在所述源设备和与客户站点相关联的多个接收器。网络设备从通往源设备的路径上从多个上游路由器中选择向其发送加入请求的上游路由器，以避免在核心网络中建立加入请求循环。至少一个上游路由器位于朝向源设备的外部边界网关协议（EBGP）路径上，并且至少一个上游路由器位于朝向源设备的内部BGP（IBGP）路径上。网络设备向所选择的上游设备发送加入请求。

2. 发明授权

US07570605B1 Multicast data trees for multicast virtual private networks 有权
标题翻译：组播虚拟专用网的组播数据树
公开(公告)号：US07570605B1
公开(公告)日：2009-08-04
申请号：US11212500
申请日：2005-08-26
申请人： Rahul Aggarwal , Yakov Rekhter , Anil Lohiya
发明人： Rahul Aggarwal , Yakov Rekhter , Anil Lohiya
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with increased scalability. In particular, the MVPNs may transport layer three (L3) multicast traffic, such as Internet Protocol (IP) packets, between remote sites via the public network. The principles described herein may reduce the overhead of protocol independent multicast (PIM) neighbor adjacencies and customer control information maintained for MVPNs. The principles may also reduce the state and the overhead of maintaining the state in the network by removing the need to maintain at least one dedicated multicast tree per each MVPN.
摘要翻译：描述了本发明的原理，用于提供跨越公共网络的多播虚拟专用网络（MVPN），所述组播虚拟专用网络能够承载具有增加的可扩展性的高带宽组播流量。特别地，MVPN可以经由公共网络在远程站点之间传输第三层（L3）组播流量，例如因特网协议（IP）分组。本文所描述的原理可以减少维护MVPN的协议无关组播（PIM）邻居邻居和客户控制信息的开销。这些原理还可以通过消除维护每个MVPN至少一个专用多播树的需要来减少维护网络状态的状态和开销。

3. 发明授权

US07564806B1 Aggregate multicast trees for multicast virtual private networks 有权
标题翻译：组播虚拟专用网聚合组播树
公开(公告)号：US07564806B1
公开(公告)日：2009-07-21
申请号：US11212509
申请日：2005-08-26
申请人： Rahul Aggarwal , Yakov Rekhter
发明人： Rahul Aggarwal , Yakov Rekhter
IPC分类号： H04L12/28 , H04W4/00
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with increased scalability. In particular, the MVPNs may transport layer three (L3) multicast traffic, such as Internet Protocol (IP) packets, between remote sites via the public network. The principles described herein may reduce the overhead of protocol independent multicast (PIM) neighbor adjacencies and customer control information maintained for MVPNs. The principles may also reduce the state and the overhead of maintaining the state in the network by removing the need to maintain at least one dedicated multicast tree per each MVPN.
摘要翻译：描述了本发明的原理，用于提供跨越公共网络的多播虚拟专用网络（MVPN），所述组播虚拟专用网络能够承载具有增加的可扩展性的高带宽组播流量。特别地，MVPN可以经由公共网络在远程站点之间传输第三层（L3）组播流量，例如因特网协议（IP）分组。本文所描述的原理可以减少维护MVPN的协议无关组播（PIM）邻居邻居和客户控制信息的开销。这些原理还可以通过消除维护每个MVPN至少一个专用多播树的需要来减少维护网络状态的状态和开销。

4. 发明授权

US07522600B1 Transport of control and data traffic for multicast virtual private networks 有权
标题翻译：组播虚拟专用网络的控制和数据流量传输
公开(公告)号：US07522600B1
公开(公告)日：2009-04-21
申请号：US11213636
申请日：2005-08-26
申请人： Rahul Aggarwal , Yakov Rekhter , Anil Lohiya
发明人： Rahul Aggarwal , Yakov Rekhter , Anil Lohiya
IPC分类号： G06F15/16
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with increased scalability. In particular, the MVPNs may transport layer three (L3) multicast traffic, such as Internet Protocol (IP) packets, between remote sites via the public network. The principles described herein may reduce the overhead of protocol independent multicast (PIM) neighbor adjacencies and customer control information maintained for MVPNs. The principles may also reduce the state and the overhead of maintaining the state in the network by removing the need to maintain at least one dedicated multicast tree per each MVPN.
摘要翻译：描述了本发明的原理，用于提供跨越公共网络的多播虚拟专用网络（MVPN），所述组播虚拟专用网络能够承载具有增加的可扩展性的高带宽组播流量。特别地，MVPN可以经由公共网络在远程站点之间传输第三层（L3）组播流量，例如因特网协议（IP）分组。本文所描述的原理可以减少维护MVPN的协议无关组播（PIM）邻居邻居和客户控制信息的开销。这些原理还可以通过消除维护每个MVPN至少一个专用多播树的需要来减少维护网络状态的状态和开销。

5. 发明授权

US07522599B1 Label switching multicast trees for multicast virtual private networks 有权
标题翻译：为组播虚拟专用网络标签交换组播树
公开(公告)号：US07522599B1
公开(公告)日：2009-04-21
申请号：US11212475
申请日：2005-08-26
申请人： Rahul Aggarwal , Yakov Rekhter , Anil Lohiya
发明人： Rahul Aggarwal , Yakov Rekhter , Anil Lohiya
IPC分类号： H04L12/28 , H04L12/56 , H04L9/00
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with increased scalability. In particular, the MVPNs may transport layer three (L3) multicast traffic, such as Internet Protocol (IP) packets, between remote sites via the public network. The principles described herein may reduce the overhead of protocol independent multicast (PIM) neighbor adjacencies and customer control information maintained for MVPNs. The principles may also reduce the state and the overhead of maintaining the state in the network by removing the need to maintain at least one dedicated multicast tree per each MVPN.
摘要翻译：描述了本发明的原理，用于提供跨越公共网络的多播虚拟专用网络（MVPN），所述组播虚拟专用网络能够承载具有增加的可扩展性的高带宽组播流量。特别地，MVPN可以经由公共网络在远程站点之间传输第三层（L3）组播流量，例如因特网协议（IP）分组。本文所描述的原理可以减少维护MVPN的协议无关组播（PIM）邻居邻居和客户控制信息的开销。这些原理还可以通过消除维护每个MVPN至少一个专用多播树的需要来减少维护网络状态的状态和开销。

6. 发明授权

US08160076B1 Auto-discovery of multicast virtual private networks 有权
标题翻译：组播虚拟专用网络的自动发现
公开(公告)号：US08160076B1
公开(公告)日：2012-04-17
申请号：US11213640
申请日：2005-08-26
申请人： Rahul Aggarwal , Yakov Rekhter
发明人： Rahul Aggarwal , Yakov Rekhter
IPC分类号： H04L12/28 , H04L12/56 , G06F15/173
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with increased scalability. In particular, the MVPNs may transport layer three (L3) multicast traffic, such as Internet Protocol (IP) packets, between remote sites via the public network. The principles described herein may reduce the overhead of protocol independent multicast (PIM) neighbor adjacencies and customer control information maintained for MVPNs. The principles may also reduce the state and the overhead of maintaining the state in the network by removing the need to maintain at least one dedicated multicast tree per each MVPN.
摘要翻译：描述了本发明的原理，用于提供跨越公共网络的多播虚拟专用网络（MVPN），所述组播虚拟专用网络能够承载具有增加的可扩展性的高带宽组播流量。特别地，MVPN可以经由公共网络在远程站点之间传输第三层（L3）组播流量，例如因特网协议（IP）分组。本文所描述的原理可以减少维护MVPN的协议无关组播（PIM）邻居邻居和客户控制信息的开销。这些原理还可以通过消除维护每个MVPN至少一个专用多播树的需要来减少维护网络状态的状态和开销。

7. 发明授权

US07990963B1 Exchange of control information for virtual private local area network (LAN) service multicast 有权
标题翻译：交换虚拟专用局域网（LAN）服务组播的控制信息
公开(公告)号：US07990963B1
公开(公告)日：2011-08-02
申请号：US12469075
申请日：2009-05-20
申请人： Rahul Aggarwal , Yakov Rekhter
发明人： Rahul Aggarwal , Yakov Rekhter
IPC分类号： H04L12/28 , H04L12/56 , H04J3/26 , G06F15/16
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing virtual private local area network service (VPLS) multicast instances across a public network by utilizing multicast trees. In particular, the VPLS multicast instances transport layer two (L2) multicast traffic, such as Ethernet packets, between customer networks via the public network. The principles described herein enable VPLS multicast instances to handle high bandwidth multicast traffic. The principles also reduce the state and the overhead of maintaining the state in the network by removing the need to perform snooping between routers within the network.
摘要翻译：描述了通过利用多播树在公共网络上提供虚拟专用局域网服务（VPLS）组播实例的本发明的原理。特别地，VPLS组播实例通过公共网络在客户网络之间传输第二层（L2）组播流量，例如以太网分组。本文描述的原理使VPLS组播实例能够处理高带宽组播流量。这些原则还通过消除在网络中的路由器之间进行窥探的需要来减少维护网络状态的状态和开销。

8. 发明授权

US07558219B1 Multicast trees for virtual private local area network (LAN) service multicast 有权
标题翻译：用于虚拟专用局域网（LAN）服务组播的组播树
公开(公告)号：US07558219B1
公开(公告)日：2009-07-07
申请号：US11212932
申请日：2005-08-26
申请人： Rahul Aggarwal , Yakov Rekhter
发明人： Rahul Aggarwal , Yakov Rekhter
IPC分类号： H04L12/28 , H04W4/00
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing virtual private local area network service (VPLS) multicast instances across a public network by utilizing multicast trees. In particular, the VPLS multicast instances transport layer two (L2) multicast traffic, such as Ethernet packets, between customer networks via the public network. The principles described herein enable VPLS multicast instances to handle high bandwidth multicast traffic. The principles also reduce the state and the overhead of maintaining the state in the network by removing the need to perform snooping between routers within the network.
摘要翻译：描述了通过利用多播树在公共网络上提供虚拟专用局域网服务（VPLS）组播实例的本发明的原理。特别地，VPLS组播实例通过公共网络在客户网络之间传输第二层（L2）组播流量，例如以太网分组。本文描述的原理使VPLS组播实例能够处理高带宽组播流量。这些原则还通过消除在网络中的路由器之间进行窥探的需要来减少维护网络状态的状态和开销。

9. 发明授权

US08625465B1 Auto-discovery of virtual private networks 有权
标题翻译：自动发现虚拟专用网络
公开(公告)号：US08625465B1
公开(公告)日：2014-01-07
申请号：US13448085
申请日：2012-04-16
申请人： Rahul Aggarwal , Yakov Rekhter
发明人： Rahul Aggarwal , Yakov Rekhter
IPC分类号： H04L12/28
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with increased scalability. In particular, the MVPNs may transport layer three (L3) multicast traffic, such as Internet Protocol (IP) packets, between remote sites via the public network. The principles described herein may reduce the overhead of protocol independent multicast (PIM) neighbor adjacencies and customer control information maintained for MVPNs. The principles may also reduce the state and the overhead of maintaining the state in the network by removing the need to maintain at least one dedicated multicast tree per each MVPN.
摘要翻译：描述了本发明的原理，用于提供跨越公共网络的多播虚拟专用网络（MVPN），所述组播虚拟专用网络能够承载具有增加的可扩展性的高带宽组播流量。特别地，MVPN可以经由公共网络在远程站点之间传输第三层（L3）组播流量，例如因特网协议（IP）分组。本文所描述的原理可以减少维护MVPN的协议无关组播（PIM）邻居邻居和客户控制信息的开销。这些原理还可以通过消除维护每个MVPN至少一个专用多播树的需要来减少维护网络状态的状态和开销。

10. 发明授权

US07983261B1 Reliable exchange of control information for multicast virtual private networks 有权
标题翻译：组播虚拟专用网可靠的交换控制信息
公开(公告)号：US07983261B1
公开(公告)日：2011-07-19
申请号：US12497957
申请日：2009-07-06
申请人： Rahul Aggarwal , Yakov Rekhter , Anil Lohiya
发明人： Rahul Aggarwal , Yakov Rekhter , Anil Lohiya
IPC分类号： H04L12/28
CPC分类号： H04L12/4641 , H04L12/18 , H04L12/1886
摘要： Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with increased scalability. In particular, the MVPNs may transport layer three (L3) multicast traffic, such as Internet Protocol (IP) packets, between remote sites via the public network. The principles described herein may reduce the overhead of protocol independent multicast (PIM) neighbor adjacencies and customer control information maintained for MVPNs. The principles may also reduce the state and the overhead of maintaining the state in the network by removing the need to maintain at least one dedicated multicast tree per each MVPN.
摘要翻译：描述了本发明的原理，用于提供跨越公共网络的多播虚拟专用网络（MVPN），所述组播虚拟专用网络能够承载具有增加的可扩展性的高带宽组播流量。特别地，MVPN可以经由公共网络在远程站点之间传输第三层（L3）组播流量，例如因特网协议（IP）分组。本文所描述的原理可以减少维护MVPN的协议无关组播（PIM）邻居邻居和客户控制信息的开销。这些原理还可以通过消除维护每个MVPN至少一个专用多播树的需要来减少维护网络状态的状态和开销。

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