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1. 发明申请

US20070165657A1 Multicast implementation in a link state protocol controlled Ethernet network 有权
标题翻译：链路状态协议控制的以太网网络中的组播实现
公开(公告)号：US20070165657A1
公开(公告)日：2007-07-19
申请号：US11702263
申请日：2007-02-05
申请人： Peter Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
发明人： Peter Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
IPC分类号： H04L12/56
CPC分类号： H04L12/462 , H04L12/18 , H04L12/4675 , H04L41/0816 , H04L45/00 , H04L45/12 , H04L45/122 , H04L45/16 , H04L45/18 , H04L45/48
摘要： Forwarding state may be installed for sparse multicast trees in a link state protocol controlled Ethernet network by enabling intermediate nodes to install state for one or more physical multicast trees, each of which may have multiple logical multicast trees mapped to it. By mapping multiple logical multicasts to a particular physical multicast, and installing state for the physical multicast, fewer FIB entries are required to implement the multiple multicasts to reduce the amount of forwarding state in forwarding tables at the intermediate nodes. Mapping may be performed by destination nodes before advertising membership in the physical multicast, or may be performed by the intermediate nodes before installing state when a destination node advertises membership in a logical multicast. Intermediate nodes will install state for the physical multicast tree if they are on a shortest path between a source and at least one destination of one of the logical multicasts that has been mapped to the physical multicast.
摘要翻译：可以通过使中间节点为一个或多个物理多播树安装状态来安装链路状态协议控制的以太网中的稀疏组播树的转发状态，每个物理多播树可以具有映射到它的多个逻辑多播树。通过将多个逻辑组播映射到特定物理组播，并为物理组播安装状态，需要较少的FIB表项来实现多个组播，以减少中间节点转发表中转发状态的数量。映射可以在广播成员身份的物理组播之前由目的地节点执行，或者可以在目的地节点在逻辑多播中通告成员资格之前由中间节点执行安装状态。如果物理组播树处于源映射到物理多播的逻辑多播中的一个源和至少一个目的地之间的最短路径上，则中间节点将为物理多播树安装状态。

2. 发明授权

US09008088B2 Multicast implementation in a link state protocol controlled ethernet network 有权
标题翻译：链路状态协议控制的以太网网络中的组播实现
公开(公告)号：US09008088B2
公开(公告)日：2015-04-14
申请号：US13302704
申请日：2011-11-22
申请人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
发明人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
IPC分类号： H04L12/28 , H04L12/18 , H04L12/46 , H04L12/701 , H04L12/751 , H04L12/721 , H04L12/761 , H04L12/705 , H04L12/753 , H04L12/931 , H04L12/24 , H04L12/935
CPC分类号： H04L12/18 , H04L12/462 , H04L12/4625 , H04L12/4641 , H04L12/4675 , H04L41/0816 , H04L45/00 , H04L45/02 , H04L45/12 , H04L45/16 , H04L45/18 , H04L45/48 , H04L45/66 , H04L49/3009 , H04L49/354
摘要： Forwarding state is installed for sparse multicast trees in a link state protocol controlled Ethernet network by enabling intermediate nodes to install state for one or more physical multicast trees, each of which may have multiple logical multicast trees mapped to it. By mapping multiple logical multicasts to a particular physical multicast, and installing state for the physical multicast, fewer FIB entries are required to implement the multiple multicasts. Mapping may be performed by destination nodes before advertising membership in the physical multicast, or may be performed by the intermediate nodes before installing state when a destination node advertises membership in a logical multicast. Intermediate nodes will install state for the physical multicast tree if they are on a shortest path between a source and at least one destination of one of the logical multicasts that has been mapped to the physical multicast.
摘要翻译：通过使中间节点能够为一个或多个物理组播树安装状态，每个可能具有映射到其上的多个逻辑组播树，为链路状态协议控制的以太网中的稀疏组播树安装转发状态。通过将多个逻辑组播映射到特定的物理组播，并为物理组播的安装状态，需要较少的FIB表项来实现多个组播。映射可以在广播成员身份的物理组播之前由目的地节点执行，或者可以在目的地节点在逻辑多播中通告成员资格之前由中间节点执行安装状态。如果物理组播树处于源映射到物理多播的逻辑多播中的一个源和至少一个目的地之间的最短路径上，则中间节点将为物理多播树安装状态。

3. 发明授权

US08867366B2 Multicast implementation in a link state protocol controlled Ethernet network 有权
标题翻译：链路状态协议控制的以太网网络中的组播实现
公开(公告)号：US08867366B2
公开(公告)日：2014-10-21
申请号：US12910477
申请日：2010-10-22
申请人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
发明人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
IPC分类号： G01R31/08 , H04L12/46 , H04L12/721 , H04L12/733
CPC分类号： H04L12/462 , H04L12/18 , H04L12/4675 , H04L41/0816 , H04L45/00 , H04L45/12 , H04L45/122 , H04L45/16 , H04L45/18 , H04L45/48
摘要： Forwarding state may be installed for sparse multicast trees in a link state protocol controlled Ethernet network by enabling intermediate nodes to install state for one or more physical multicast trees, each of which may have multiple logical multicast trees mapped to it. By mapping multiple logical multicasts to a particular physical multicast, and installing state for the physical multicast, fewer FIB entries are required to implement the multiple multicasts to reduce the amount of forwarding state in forwarding tables at the intermediate nodes. Mapping may be performed by destination nodes before advertising membership in the physical multicast, or may be performed by the intermediate nodes before installing state when a destination node advertises membership in a logical multicast. Intermediate nodes will install state for the physical multicast tree if they are on a shortest path between a source and at least one destination of one of the logical multicasts that has been mapped to the physical multicast.
摘要翻译：可以通过使中间节点为一个或多个物理多播树安装状态来安装链路状态协议控制的以太网中的稀疏组播树的转发状态，每个物理多播树可以具有映射到它的多个逻辑多播树。通过将多个逻辑组播映射到特定物理组播，并为物理组播安装状态，需要较少的FIB表项来实现多个组播，以减少中间节点转发表中转发状态的数量。映射可以在广播成员身份的物理组播之前由目的地节点执行，或者可以在目的地节点在逻辑多播中通告成员资格之前由中间节点执行安装状态。如果物理组播树处于源映射到物理多播的逻辑多播中的一个源和至少一个目的地之间的最短路径上，则中间节点将为物理多播树安装状态。

4. 发明授权

US08059647B2 Multicast implementation in a link state protocol controlled ethernet network 有权
标题翻译：链路状态协议控制的以太网网络中的组播实现
公开(公告)号：US08059647B2
公开(公告)日：2011-11-15
申请号：US11702263
申请日：2007-02-05
申请人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
发明人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
IPC分类号： H04L12/28
CPC分类号： H04L12/462 , H04L12/18 , H04L12/4675 , H04L41/0816 , H04L45/00 , H04L45/12 , H04L45/122 , H04L45/16 , H04L45/18 , H04L45/48
摘要： Forwarding state may be installed for sparse multicast trees in a link state protocol controlled Ethernet network by enabling intermediate nodes to install state for one or more physical multicast trees, each of which may have multiple logical multicast trees mapped to it. By mapping multiple logical multicasts to a particular physical multicast, and installing state for the physical multicast, fewer FIB entries are required to implement the multiple multicasts to reduce the amount of forwarding state in forwarding tables at the intermediate nodes. Mapping may be performed by destination nodes before advertising membership in the physical multicast, or may be performed by the intermediate nodes before installing state when a destination node advertises membership in a logical multicast. Intermediate nodes will install state for the physical multicast tree if they are on a shortest path between a source and at least one destination of one of the logical multicasts that has been mapped to the physical multicast.
摘要翻译：可以通过使中间节点为一个或多个物理多播树安装状态来安装链路状态协议控制的以太网中的稀疏组播树的转发状态，每个物理多播树可以具有映射到它的多个逻辑多播树。通过将多个逻辑组播映射到特定物理组播，并为物理组播安装状态，需要较少的FIB表项来实现多个组播，以减少中间节点转发表中转发状态的数量。映射可以在广播成员身份的物理组播之前由目的地节点执行，或者可以在目的地节点在逻辑多播中通告成员资格之前由中间节点执行安装状态。如果物理组播树处于源映射到物理多播的逻辑多播中的一个源和至少一个目的地之间的最短路径上，则中间节点将为物理多播树安装状态。

5. 发明申请

US20110032936A1 MULTICAST IMPLEMENTATION IN A LINK STATE PROTOCOL CONTROLLED ETHERNET NETWORK 有权
标题翻译：链路状态协议控制以太网网络中的多播实现
公开(公告)号：US20110032936A1
公开(公告)日：2011-02-10
申请号：US12910477
申请日：2010-10-22
申请人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
发明人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
IPC分类号： H04L12/56
CPC分类号： H04L12/462 , H04L12/18 , H04L12/4675 , H04L41/0816 , H04L45/00 , H04L45/12 , H04L45/122 , H04L45/16 , H04L45/18 , H04L45/48
摘要： Forwarding state may be installed for sparse multicast trees in a link state protocol controlled Ethernet network by enabling intermediate nodes to install state for one or more physical multicast trees, each of which may have multiple logical multicast trees mapped to it. By mapping multiple logical multicasts to a particular physical multicast, and installing state for the physical multicast, fewer FIB entries are required to implement the multiple multicasts to reduce the amount of forwarding state in forwarding tables at the intermediate nodes. Mapping may be performed by destination nodes before advertising membership in the physical multicast, or may be performed by the intermediate nodes before installing state when a destination node advertises membership in a logical multicast. Intermediate nodes will install state for the physical multicast tree if they are on a shortest path between a source and at least one destination of one of the logical multicasts that has been mapped to the physical multicast.
摘要翻译：可以通过使中间节点为一个或多个物理多播树安装状态来安装链路状态协议控制的以太网中的稀疏组播树的转发状态，每个物理多播树可以具有映射到它的多个逻辑多播树。通过将多个逻辑组播映射到特定物理组播，并为物理组播安装状态，需要较少的FIB表项来实现多个组播，以减少中间节点转发表中转发状态的数量。映射可以在广播成员身份的物理组播之前由目的地节点执行，或者可以在目的地节点在逻辑多播中通告成员资格之前由中间节点执行安装状态。如果物理组播树处于源映射到物理多播的逻辑多播中的一个源和至少一个目的地之间的最短路径上，则中间节点将为物理多播树安装状态。

6. 发明授权

US07822031B2 Multicast implementation in a link state protocol controlled ethernet network 有权
公开(公告)号：US07822031B2
公开(公告)日：2010-10-26
申请号：US11702263
申请日：2007-02-05
申请人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
发明人： Peter Ashwood-Smith , Guoli Yin , Hong Zhang , Nigel Bragg , David Allan
IPC分类号： H04L12/28
摘要： Forwarding state may be installed for sparse multicast trees in a link state protocol controlled Ethernet network by enabling intermediate nodes to install state for one or more physical multicast trees, each of which may have multiple logical multicast trees mapped to it. By mapping multiple logical multicasts to a particular physical multicast, and installing state for the physical multicast, fewer FIB entries are required to implement the multiple multicasts to reduce the amount of forwarding state in forwarding tables at the intermediate nodes. Mapping may be performed by destination nodes before advertising membership in the physical multicast, or may be performed by the intermediate nodes before installing state when a destination node advertises membership in a logical multicast. Intermediate nodes will install state for the physical multicast tree if they are on a shortest path between a source and at least one destination of one of the logical multicasts that has been mapped to the physical multicast.

7. 发明授权

US08879424B2 Method and apparatus for exchanging routing information and the establishment of connectivity across multiple network areas 有权
标题翻译：用于交换路由信息和跨多个网络区域建立连接的方法和装置
公开(公告)号：US08879424B2
公开(公告)日：2014-11-04
申请号：US13526907
申请日：2012-06-19
申请人： David Allan , Nigel Bragg , Paul Unbehagen , Peter Ashwood-Smith , Guoli Yin
发明人： David Allan , Nigel Bragg , Paul Unbehagen , Peter Ashwood-Smith , Guoli Yin
IPC分类号： H04L12/66 , H04L12/28 , G06F15/16 , H04L12/751 , H04L12/721 , H04L12/46 , H04L12/715
CPC分类号： H04L41/12 , H04L12/462 , H04L45/02 , H04L45/04 , H04L45/66
摘要： Routes may be installed across multiple link state protocol controlled Ethernet network areas by causing ABBs to leak I-SID information advertised by BEBs in a L1 network area into an L2 network area. ABBs will only leak I-SIDs for BEBs where it is the closest ABB for that BEB. Where another ABB on the L2 network also leaks the same I-SID into the L2 network area from another L1 network area, the I-SID is of multi-area interest. ABBs will advertise I-SIDs that are common to the L1 and L2 networks back into their respective L1 network. Within each L1 and L2 network area, forwarding state will be installed between network elements advertising common interest in an ISID, so that multi-area paths may be created to span the L1/L2/L1 network areas. The L1/L2/L1 network structure may recurse an arbitrary number of times.
摘要翻译：可以通过使ABB将L1网络区域中的BEB发布的I-SID信息泄漏到L2网络区域中，将路由安装在多个链路状态协议控制的以太网网络区域。 ABB只会泄漏BEB的I-SID，而该BEB是该BEB最接近的ABB。在L2网络上的另一个ABB也从另一个L1网络区域将相同的I-SID泄漏到L2网络区域中，I-SID具有多方面的兴趣。 ABB将通过将L1和L2网络通用的I-SID广播回各自的L1网络。在每个L1和L2网络区域内，转发状态将被安装在对ISID广播共同兴趣的网元之间，从而可以创建多区域路径来跨越L1 / L2 / L1网络区域。 L1 / L2 / L1网络结构可能会递归任意次数。

8. 发明申请

US20120263075A1 Method and Apparatus for Exchanging Routing Information and the Establishment of Connectivity Across Multiple Network Areas 有权
标题翻译：交换路由信息的方法和装置以及跨多个网络区域的连接建立
公开(公告)号：US20120263075A1
公开(公告)日：2012-10-18
申请号：US13526907
申请日：2012-06-19
申请人： David Allan , Nigel Bragg , Paul Unbehagen , Peter Ashwood-Smith , Guoli Yin
发明人： David Allan , Nigel Bragg , Paul Unbehagen , Peter Ashwood-Smith , Guoli Yin
IPC分类号： H04L12/28
CPC分类号： H04L41/12 , H04L12/462 , H04L45/02 , H04L45/04 , H04L45/66
摘要： Routes may be installed across multiple link state protocol controlled Ethernet network areas by causing ABBs to leak I-SID information advertised by BEBs in a L1 network area into an L2 network area. ABBs will only leak I-SIDs for BEBs where it is the closest ABB for that BEB. Where another ABB on the L2 network also leaks the same I-SID into the L2 network area from another L1 network area, the I-SID is of multi-area interest. ABBs will advertise I-SIDs that are common to the L1 and L2 networks back into their respective L1 network. Within each L1 and L2 network area, forwarding state will be installed between network elements advertising common interest in an ISID, so that multi-area paths may be created to span the L1/L2/L1 network areas. The L1/L2/L1 network structure may recurse an arbitrary number of times.
摘要翻译：可以通过使ABB将L1网络区域中的BEB发布的I-SID信息泄漏到L2网络区域中，将路由安装在多个链路状态协议控制的以太网网络区域。 ABB只会泄漏BEB的I-SID，而该BEB是该BEB最接近的ABB。在L2网络上的另一个ABB也从另一个L1网络区域将相同的I-SID泄漏到L2网络区域中，I-SID具有多方面的兴趣。 ABB将通过将L1和L2网络通用的I-SID广播回各自的L1网络。在每个L1和L2网络区域内，转发状态将被安装在对ISID广播共同兴趣的网元之间，从而可以创建多区域路径来跨越L1 / L2 / L1网络区域。 L1 / L2 / L1网络结构可能会递归任意次数。

9. 发明申请

US20080144644A1 Method and apparatus for exchanging routing information and the establishment of connectivity across multiple network areas 失效
标题翻译：用于交换路由信息和跨多个网络区域建立连接的方法和装置
公开(公告)号：US20080144644A1
公开(公告)日：2008-06-19
申请号：US11899118
申请日：2007-09-04
申请人： David Allan , Nigel Bragg , Paul Unbehagen , Peter Ashwood-Smith , Guoli Yin
发明人： David Allan , Nigel Bragg , Paul Unbehagen , Peter Ashwood-Smith , Guoli Yin
IPC分类号： H04L12/28
CPC分类号： H04L41/12 , H04L12/462 , H04L45/02 , H04L45/04 , H04L45/66
摘要： Routes may be installed across multiple link state protocol controlled Ethernet network areas by causing ABBs to leak I-SID information advertised by BEBs a L1 network area into an L2 network area. ABBs will only leak I-SIDs for BEBs where it is the closest ABB for that BEB. Where another ABB on the L2 network also leaks the same I-SID into the L2 network area from another L1 network area, the I-SID is of multi-area interest. ABBs will advertise I-SIDs that are common to the L1 and L2 networks back into their respective L1 network. Within each L1 and L2 network area, forwarding state will be installed between network elements advertising common interest in an ISID, so that multi-area paths may be created to span the L1/L2/L1 network areas. ABBs may summarize BEB multicast trees such that the set of trees for a given I-SID transiting the ABB is condensed into a common tree. The L2 network may further be implemented as a second layer implemented using a L1/L2/L1 network structure, so that the L1/L2/L1 network structure may recurse an arbitrary number of times.
摘要翻译：可以通过使ABB将由L1B网络区域发布的I-SID信息泄漏到L2网络区域中，将多个链路状态协议控制的以太网网络上的路由安装到L2网络区域。 ABB只会泄漏BEB的I-SID，而该BEB是该BEB最接近的ABB。在L2网络上的另一个ABB也从另一个L1网络区域将相同的I-SID泄漏到L2网络区域中，I-SID具有多方面的兴趣。 ABB将通过将L1和L2网络通用的I-SID广播回各自的L1网络。在每个L1和L2网络区域内，转发状态将被安装在对ISID广播共同兴趣的网元之间，从而可以创建多区域路径来跨越L1 / L2 / L1网络区域。 ABB可能会总结BEB组播树，以便将通过ABB的给定I-SID的树组合成一个公共树。 L2网络还可以被实现为使用L1 / L2 / L1网络结构实现的第二层，使得L1 / L2 / L1网络结构可以递归任意次数。

10. 发明授权

US09444720B2 Method and apparatus for multicast implementation in a routed ethernet mesh network 有权
标题翻译：在路由以太网网状网络中组播实现的方法和装置
公开(公告)号：US09444720B2
公开(公告)日：2016-09-13
申请号：US12435973
申请日：2009-05-05
申请人： David Allan , Nigel Bragg , Jerome Chiabaut
发明人： David Allan , Nigel Bragg , Jerome Chiabaut
IPC分类号： H04L12/701 , H04L12/721 , H04L12/761 , H04L12/18 , H04L12/46
CPC分类号： H04L45/12 , H04L12/185 , H04L12/4641 , H04L45/00 , H04L45/16 , H04L45/66 , H04L67/1044 , H04L67/1046 , H04N1/333
摘要： Interest in multicast group membership may be advertised via a routing system on an Ethernet network along with an indication of an algorithm to be used by the nodes on the network to calculate the distribution tree or trees for the multicast. Each node, upon receipt of the advertisement, will determine the algorithm that is to be used to produce the multicast tree and will use the algorithm to calculate whether it is on a path between nodes advertising common interest in the multicast. Example algorithms may include shortest path algorithms and spanning tree algorithms. This allows multicast membership to be managed via the routing control plane, while enabling spanning tree processes to be used to forward multicast traffic. Since spanning tree is able to install multicast state per service rather than per source per service, this reduces the amount of forwarding state required to implement multicasts on the routed Ethernet mesh network.
摘要翻译：可以通过以太网网络上的路由系统以及由网络上的节点使用的算法的指示来广播对组播组成员的兴趣，以计算组播的分布树或树。每个节点在接收到广告时将确定要用于生成多播树的算法，并且将使用该算法来计算是否在节点之间的路径上，广播广播上的共同兴趣。示例算法可以包括最短路径算法和生成树算法。这允许通过路由控制平面管理多播成员资格，同时使用生成树进程来转发组播流量。由于生成树能够按服务安装多播状态，而不是每个服务的每个源，因此减少了在路由以太网网络上实现组播所需的转发状态量。

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