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31. 发明授权

US07623446B1 MPLS virtual rings 失效
标题翻译： MPLS虚拟环
公开(公告)号：US07623446B1
公开(公告)日：2009-11-24
申请号：US11271939
申请日：2005-11-14
申请人： David Allan , Peter Ashwood Smith
发明人： David Allan , Peter Ashwood Smith
IPC分类号： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04L12/28 , H04L12/56 , G06F15/173
CPC分类号： H04L12/42 , H04L1/22 , H04L12/4637 , H04L12/4641 , H04L41/20 , H04L45/04 , H04L45/507
摘要： A virtual ring representing a community of interest is constructed from an interconnected mesh of nodes in a packet network. The virtual ring instantiates ring labels in respective forwarding tables for each node in the virtual ring and then advertises the ring labels to all other nodes in the virtual ring, for example by flooding BGP advertisements. Data packets entering the ring are assigned a ring label which is then stripped off when exiting the ring. The data packets are forwarded around the virtual ring using the ring labels. The virtual ring can operate using BGP/LDP Multi Protocol Label Switching (MPLS). Multiple virtual rings can be bridged together using a central hub or alternatively multiple virtual rings can be redundantly bridged together using tandem hubs.
摘要翻译：表示感兴趣社区的虚拟环由分组网络中的节点的互连网格构成。虚拟环实例化虚拟环中每个节点的相应转发表中的环标签，然后将环标签通告给虚拟环中的所有其他节点，例如通过泛滥BGP通告。进入环的数据包被分配一个环标签，然后在离开环时被剥离。数据包使用环形标签在虚拟环路周围转发。虚拟环可以使用BGP / LDP多协议标签交换（MPLS）进行操作。多个虚拟环可以使用中央集线器桥接在一起，或者多个虚拟环可以使用串联集线器冗余桥接在一起。

32. 发明授权

US08861335B2 Resilient attachment to provider link state bridging (PLSB) networks 有权
标题翻译：对提供商链路状态桥接（PLSB）网络的弹性附件
公开(公告)号：US08861335B2
公开(公告)日：2014-10-14
申请号：US13586620
申请日：2012-08-15
申请人： Liam Casey , David Allan , Nigel L. Bragg , Jerome Chiabaut , Peter Ashwood Smith
发明人： Liam Casey , David Allan , Nigel L. Bragg , Jerome Chiabaut , Peter Ashwood Smith
IPC分类号： G01R31/08
CPC分类号： H04L41/0654 , H04L12/66 , H04L45/02 , H04L45/22 , H04L45/245 , H04L45/48 , H04L45/74 , H04L47/41 , H04L2212/00 , Y02D50/30
摘要： A system for interfacing a client system in a first network domain with a Provider Link State Bridging (PLSB) domain includes at least two Backbone Edge Bridges (BEBs) of the PLSB domain. Each BEB is an end-point of a connection in the first network domain to the client system and an end-point of at least a unicast path in the PLSB domain. An inter-node trunk is provided in the PLSB domain for interconnecting the BEBs. A phantom node is defined in the PLSB domain and is notionally located on the inter-node trunk. Each of the BEBs is configured such that: an ingress packet received from the client system via the connection in the first network domain is forwarded through a path notionally rooted at the phantom node; and an egress packet destined for the client system is forwarded to the client system through the connection in the first network domain.
摘要翻译：用于将第一网络域中的客户端系统与提供者链路状态桥接（PLSB）域接口的系统包括至少两个PLSB域的骨干边缘桥（BEB）。每个BEB是第一网络域中的客户端系统的连接端点和PLSB域中至少一个单播路径的端点。在PLSB域中提供节点间中继以互连BEB。在PLSB域中定义了虚拟节点，并且概念上位于节点间中继线上。每个BEB被配置为使得经由第一网络域中的连接从客户端系统接收的入口分组通过一个有意识地根植于虚拟节点的路径转发; 并且去往客户端系统的出口分组通过第一网络域中的连接被转发到客户端系统。

33. 发明授权

US08619785B2 Pre-computing alternate forwarding state in a routed ethernet mesh network 有权
标题翻译：在路由以太网网状网络中预先计算备用转发状态
公开(公告)号：US08619785B2
公开(公告)日：2013-12-31
申请号：US12431493
申请日：2009-04-28
申请人： David Allan , Peter Ashwood Smith
发明人： David Allan , Peter Ashwood Smith
IPC分类号： H04L12/28 , H04L12/26 , H04L12/56
CPC分类号： H04L12/462 , H04L45/02 , H04L45/021 , H04L45/18 , H04L45/22 , H04L45/28 , H04L45/66 , H04L69/40
摘要： A set of critical nodes or links is identified on the network and alternate forwarding state is pre-computed and disseminated within a node such that, upon failure of one of the critical nodes/links, a minimal trigger will cause the alternate forwarding state to be used to forward traffic on the routed Ethernet mesh network. In one embodiment rather than storing full tables of alternate forwarding state, only the changes to the forwarding state required by an identified failure is stored by the network nodes. Upon occurrence of a failure on the network, the identified failure is used to select the alternate forwarding state.
摘要翻译：在网络上识别一组关键节点或链路，并且在节点内预先计算和传播备用转发状态，使得在关键节点/链路之一发生故障时，最小触发将导致备用转发状态为用于在路由以太网网络上转发流量。在一个实施例中，而不是存储替代转发状态的完整表，只有所识别的故障所需的转发状态的改变才被网络节点存储。在网络发生故障时，使用识别的故障来选择备用转发状态。

34. 发明申请

US20100322263A1 Method and Apparatus for Implementing Control of Multiple Physically Dual Homed Devices 失效
标题翻译：用于实现多个物理双重设备的控制的方法和装置
公开(公告)号：US20100322263A1
公开(公告)日：2010-12-23
申请号：US12487407
申请日：2009-06-18
申请人： David Allan , Peter Ashwood Smith
发明人： David Allan , Peter Ashwood Smith
IPC分类号： H04L12/28
CPC分类号： H04L12/437 , A61K31/337 , A61K33/00 , A61K47/12 , H04L41/0668 , H04L41/0672 , H04L45/28 , H04L45/66 , H04L49/351 , H04L49/70
摘要： A ring control protocol is used to establish a separate control plane for a plurality of physically dual homed devices to enable collections of dual homed devices to be represented by a single pair of addresses into the attached routed Ethernet network. The gateway devices analyze the passing ring control packets to create direct mappings for data packets to the routed Ethernet network. Thus, although the dual homed devices are treated as a ring from a control perspective, the data path is implemented to be direct so that data packets continue to flow directly from the dual homed devices to each of the attached gateway devices. In one embodiment, each of the gateway devices implements a virtual switch and advertises the MAC address of the virtual switch into the routed Ethernet network rather than the MAC addresses of each of the attached Ethernet Switch Units.
摘要翻译：环控制协议用于为多个物理双重归属设备建立单独的控制平面，以使得双归属设备的集合可以由连接的路由以太网中的单对地址表示。网关设备分析通过的环控制数据包，以创建到路由以太网的数据包的直接映射。因此，虽然从控制角度将双重归属设备视为环，但是数据路径被实现为直接的，使得数据分组继续直接从双归属设备流向每个附接的网关设备。在一个实施例中，每个网关设备实现虚拟交换机，并且将虚拟交换机的MAC地址通告给路由的以太网，而不是每个连接的以太网交换机单元的MAC地址。

35. 发明授权

US08649259B2 Method and apparatus for implementing control of multiple physically dual homed devices 失效
标题翻译：用于实现多个物理双重归属设备的控制的方法和装置
公开(公告)号：US08649259B2
公开(公告)日：2014-02-11
申请号：US13471712
申请日：2012-05-15
申请人： David Allan , Peter Ashwood-Smith
发明人： David Allan , Peter Ashwood-Smith
IPC分类号： G01R31/08
CPC分类号： H04L12/437 , A61K31/337 , A61K33/00 , A61K47/12 , H04L41/0668 , H04L41/0672 , H04L45/28 , H04L45/66 , H04L49/351 , H04L49/70
摘要： A ring control protocol is used to establish a separate control plane for a plurality of physically dual homed devices to enable collections of dual homed devices to be represented by a single pair of addresses into the attached routed Ethernet network. The gateway devices analyze the passing ring control packets to create direct mappings for data packets to the routed Ethernet network. Thus, although the dual homed devices are treated as a ring from a control perspective, the data path is implemented to be direct so that data packets continue to flow directly from the dual homed devices to each of the attached gateway devices. In one embodiment, each of the gateway devices implements a virtual switch and advertises the MAC address of the virtual switch into the routed Ethernet network rather than the MAC addresses of each of the attached Ethernet Switch Units.
摘要翻译：环控制协议用于为多个物理双重归属设备建立单独的控制平面，以使得双归属设备的集合可以由连接的路由以太网中的单对地址表示。网关设备分析通过的环控制数据包，以创建到路由以太网的数据包的直接映射。因此，虽然从控制角度将双重归属设备视为环，但是数据路径被实现为直接的，使得数据分组继续直接从双归属设备流向每个附接的网关设备。在一个实施例中，每个网关设备实现虚拟交换机，并且将虚拟交换机的MAC地址通告给路由的以太网，而不是每个连接的以太网交换机单元的MAC地址。

36. 发明申请

US20120230183A1 METHOD AND APPARATUS FOR IMPLEMENTING CONTROL OF MULTIPLE PHYSICALLY DUAL HOMED DEVICES 失效
标题翻译：实现多物理双重设备控制的方法与装置
公开(公告)号：US20120230183A1
公开(公告)日：2012-09-13
申请号：US13471712
申请日：2012-05-15
申请人： David Allan , Peter Ashwood-Smith
发明人： David Allan , Peter Ashwood-Smith
IPC分类号： H04L12/42 , H04L12/437
CPC分类号： H04L12/437 , A61K31/337 , A61K33/00 , A61K47/12 , H04L41/0668 , H04L41/0672 , H04L45/28 , H04L45/66 , H04L49/351 , H04L49/70
摘要： A ring control protocol is used to establish a separate control plane for a plurality of physically dual homed devices to enable collections of dual homed devices to be represented by a single pair of addresses into the attached routed Ethernet network. The gateway devices analyze the passing ring control packets to create direct mappings for data packets to the routed Ethernet network. Thus, although the dual homed devices are treated as a ring from a control perspective, the data path is implemented to be direct so that data packets continue to flow directly from the dual homed devices to each of the attached gateway devices. In one embodiment, each of the gateway devices implements a virtual switch and advertises the MAC address of the virtual switch into the routed Ethernet network rather than the MAC addresses of each of the attached Ethernet Switch Units.
摘要翻译：环控制协议用于为多个物理双重归属设备建立单独的控制平面，以使得双归属设备的集合可以由连接的路由以太网中的单对地址表示。网关设备分析通过的环控制数据包，以创建到路由以太网的数据包的直接映射。因此，虽然从控制角度将双重归属设备视为环，但是数据路径被实现为直接的，使得数据分组继续直接从双归属设备流向每个附接的网关设备。在一个实施例中，每个网关设备实现虚拟交换机，并且将虚拟交换机的MAC地址通告给路由的以太网，而不是每个连接的以太网交换机单元的MAC地址。

37. 发明授权

US08184648B2 Method and apparatus for implementing control of multiple physically dual homed devices 失效
标题翻译：用于实现多个物理双重归属装置的控制的方法和装置
公开(公告)号：US08184648B2
公开(公告)日：2012-05-22
申请号：US12487407
申请日：2009-06-18
申请人： David Allan , Peter Ashwood Smith
发明人： David Allan , Peter Ashwood Smith
IPC分类号： H04L12/28
CPC分类号： H04L12/437 , A61K31/337 , A61K33/00 , A61K47/12 , H04L41/0668 , H04L41/0672 , H04L45/28 , H04L45/66 , H04L49/351 , H04L49/70
摘要： A ring control protocol is used to establish a separate control plane for a plurality of physically dual homed devices to enable collections of dual homed devices to be represented by a single pair of addresses into the attached routed Ethernet network. The gateway devices analyze the passing ring control packets to create direct mappings for data packets to the routed Ethernet network. Thus, although the dual homed devices are treated as a ring from a control perspective, the data path is implemented to be direct so that data packets continue to flow directly from the dual homed devices to each of the attached gateway devices. In one embodiment, each of the gateway devices implements a virtual switch and advertises the MAC address of the virtual switch into the routed Ethernet network rather than the MAC addresses of each of the attached Ethernet Switch Units.
摘要翻译：环控制协议用于为多个物理双重归属设备建立单独的控制平面，以使得双归属设备的集合可以由连接的路由以太网中的单对地址表示。网关设备分析通过的环控制数据包，以创建到路由以太网的数据包的直接映射。因此，虽然从控制角度将双重归属设备视为环，但是数据路径被实现为直接的，使得数据分组继续直接从双归属设备流向每个附接的网关设备。在一个实施例中，每个网关设备实现虚拟交换机，并且将虚拟交换机的MAC地址通告给路由的以太网，而不是每个连接的以太网交换机单元的MAC地址。

38. 发明申请

US20100271936A1 Pre-Computing Alternate Forwarding State in a Routed Ethernet Mesh Network 有权
标题翻译：在路由以太网网络中预先计算备用转发状态
公开(公告)号：US20100271936A1
公开(公告)日：2010-10-28
申请号：US12431493
申请日：2009-04-28
申请人： David Allan , Peter Ashwood Smith
发明人： David Allan , Peter Ashwood Smith
IPC分类号： H04L12/24 , H04L12/28
CPC分类号： H04L12/462 , H04L45/02 , H04L45/021 , H04L45/18 , H04L45/22 , H04L45/28 , H04L45/66 , H04L69/40
摘要： A set of critical nodes or links is identified on the network and alternate forwarding state is pre-computed and disseminated within a node such that, upon failure of one of the critical nodes/links, a minimal trigger will cause the alternate forwarding state to be used to forward traffic on the routed Ethernet mesh network. In one embodiment rather than storing full tables of alternate forwarding state, only the changes to the forwarding state required by an identified failure is stored by the network nodes. Upon occurrence of a failure on the network, the identified failure is used to select the alternate forwarding state.
摘要翻译：在网络上识别一组关键节点或链路，并且在节点内预先计算和传播备用转发状态，使得在关键节点/链路之一发生故障时，最小触发将导致备用转发状态为用于在路由以太网网络上转发流量。在一个实施例中，而不是存储替代转发状态的完整表，只有所识别的故障所需的转发状态的改变才被网络节点存储。在网络发生故障时，使用识别的故障来选择备用转发状态。

39. 发明授权

US08270290B2 Resilient attachment to provider link state bridging (PLSB) networks 失效
标题翻译：对提供商链路状态桥接（PLSB）网络的弹性附件
公开(公告)号：US08270290B2
公开(公告)日：2012-09-18
申请号：US12340174
申请日：2008-12-19
申请人： Liam Casey , David Allan , Nigel L. Bragg , Jerome Chiabaut , Peter Ashwood Smith
发明人： Liam Casey , David Allan , Nigel L. Bragg , Jerome Chiabaut , Peter Ashwood Smith
IPC分类号： G01R31/08
CPC分类号： H04L41/0654 , H04L12/66 , H04L45/02 , H04L45/22 , H04L45/245 , H04L45/48 , H04L45/74 , H04L47/41 , H04L2212/00 , Y02D50/30
摘要： A method system for interfacing a client system in a first network domain with a Provider Link State Bridging (PLSB) network domain. At least two Backbone Edge Bridges (BEBs) of the PLSB domain 20 are provided. Each BEB is an end-point of a connection in the first network domain to the client system and an end-point of at least a unicast path defined within the PLSB domain 20. An inter-node trunk is provided in the PLSB domain 20 for interconnecting the at least two BEBs. A phantom node is defined in the PLSB domain 20. The phantom node has a unique address in the PLSB domain 20 and is notionally located on the inter-node trunk one hop from each of the BEBs. Each of the BEBs is configured such that: an ingress packet received from the client system via the connection in the first network domain is forwarded through a path notionally rooted at the phantom node; and an egress subscriber packet destined for the client system is forwarded to the client system through the connection in the first network domain.
摘要翻译：一种用于将第一网络域中的客户端系统与提供商链路状态桥接（PLSB）网络接口的方法系统。提供了PLSB域20的至少两个骨干边缘桥（BEB）。每个BEB是在第一网络域中到客户端系统的连接的端点以及在PLSB域20内定义的至少单播路径的端点。在PLSB域20中提供节点间中继，用于互连所述至少两个BEB。在PLSB域20中定义了虚拟节点。虚拟节点在PLSB域20中具有唯一的地址，并且从每个BEB中概念地位于节点间中继一跳。每个BEB被配置为使得经由第一网络域中的连接从客户端系统接收的入口分组通过一个有意识地根植于虚拟节点的路径转发; 并且去往客户端系统的出口订户分组通过第一网络域中的连接被转发到客户端系统。

40. 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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