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1. 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。

2. 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。

3. 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。

4. 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。

5. 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.

6. 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。

7. 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。

8. 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。

9. 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。

10. 发明授权

US09124512B2 Method and apparatus for simplifying the computation of alternate network paths 有权
标题翻译：用于简化备用网络路径计算的方法和装置
公开(公告)号：US09124512B2
公开(公告)日：2015-09-01
申请号：US13595011
申请日：2012-08-27
申请人： Peter Ashwood Smith , Hong Zhang , Guoli Yin
发明人： Peter Ashwood Smith , Hong Zhang , Guoli Yin
IPC分类号： H04L12/26 , H04L12/707 , H04L12/66 , H04L12/751 , H04J3/14
CPC分类号： H04L45/22 , H04J3/14 , H04L12/66 , H04L45/02
摘要： An alternate path calculation process may be terminated after considering some of a source node's neighbors and without considering each of its neighbors, to reduce the amount of processing required to perform the alternate path calculations. The neighbors may be ranked according to the number of alternate paths that the neighbor has historically been able to provide on the network. The influence of historical success or failure may degrade over time so that the rankings may be adjusted to reflect changes in network topography. A given source node, when computing alternate paths through the network, may preferentially select neighbors to perform alternate path calculations on historically higher scoring nodes before performing calculations on historically lower scoring nodes. Several different criteria may be used to stop the alternate path calculation process before considering all neighbors. The neighbors may be loop free neighbors or U-turn neighbors.
摘要翻译：替代路径计算过程可以在考虑了源节点的邻居中的一些并且不考虑其每个邻居的情况下终止，以减少执行备用路径计算所需的处理量。可以根据邻居历史上能够在网络上提供的备用路径的数量来排列邻居。历史成功或失败的影响可能随着时间的推移而降低，以便调整排名以反映网络地形的变化。给定的源节点在计算通过网络的备用路径时，可以优先选择邻居，以便在历史上较高的得分节点执行计算之前对历史上较高的评分节点执行备用路径计算。在考虑所有邻居之前，可以使用几种不同的标准来停止备用路径计算过程。邻居可以是无循环的邻居或U形圈邻居。

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