公开(公告)号：US20120281710A1

公开(公告)日：2012-11-08

申请号：US13388780

申请日：2009-07-31

申请人： Marc Holness ,  Abdullah Bashar ,  Marc-Andre Rochon ,  Simon Parry ,  Chris Ramsden

发明人： Marc Holness ,  Abdullah Bashar ,  Marc-Andre Rochon ,  Simon Parry ,  Chris Ramsden

IPC分类号： H04L12/28

CPC分类号： H04L12/437 ,  H04L45/28 ,  H04L45/50

摘要： A system for controlling packet forwarding through a point-to-point (p2p) connection between first and second end nodes of a packet network domain having a mesh topology. The system comprises a sub-ring network instantiated in the network domain, the sub-ring network comprising a pair of topologically diverse ring spans extending between the first and second end nodes. Each of the end nodes is controlled to forward packets of the p2p connection through the sub-ring network in accordance with a ring network routing scheme, and an intermediate node traversed by one of the ring spans is controlled to forward packets of the p2p connection through the ring span in accordance with a linear path routing scheme.

摘要翻译： 一种用于通过具有网状拓扑的分组网络域的第一和第二端节点之间的点对点（p2p）连接来控制分组转发的系统。 该系统包括在网络域中实例化的子环网络，子环网络包括在第一和第二端节点之间延伸的一对拓扑不同的环跨。 根据环网路由方案，对每个终端节点进行控制，通过子环网转发p2p连接的数据包，并控制由其中一个环网跨越的中间节点转发p2p连接的数据包 环形根据线性路径路由方案。

公开(公告)号：US08787398B2

公开(公告)日：2014-07-22

申请号：US13388780

申请日：2009-07-31

申请人： Marc Holness ,  Bashar Abdullah ,  Marc-Andre Rochon ,  Simon Parry ,  Chris Ramsden

发明人： Marc Holness ,  Bashar Abdullah ,  Marc-Andre Rochon ,  Simon Parry ,  Chris Ramsden

IPC分类号： H04L12/28

CPC分类号： H04L12/437 ,  H04L45/28 ,  H04L45/50

摘要： A system for controlling packet forwarding through a point-to-point (p2p) connection between first and second end nodes of a packet network domain having a mesh topology. The system comprises a sub-ring network instantiated in the network domain, the sub-ring network comprising a pair of topologically diverse ring spans extending between the first and second end nodes. Each of the end nodes is controlled to forward packets of the p2p connection through the sub-ring network in accordance with a ring network routing scheme, and an intermediate node traversed by one of the ring spans is controlled to forward packets of the p2p connection through the ring span in accordance with a linear path routing scheme.

摘要翻译： 一种用于通过具有网状拓扑的分组网络域的第一和第二端节点之间的点对点（p2p）连接来控制分组转发的系统。 该系统包括在网络域中实例化的子环网络，子环网络包括在第一和第二端节点之间延伸的一对拓扑不同的环跨。 根据环网路由方案，对每个终端节点进行控制，通过子环网转发p2p连接的数据包，并控制由其中一个环网跨越的中间节点转发p2p连接的数据包 环形根据线性路径路由方案。

公开(公告)号：US09203644B2

公开(公告)日：2015-12-01

申请号：US12420970

申请日：2009-04-09

申请人： Marc Holness ,  Abdullah Bashar ,  Marc-Andre Rochon

发明人： Marc Holness ,  Abdullah Bashar ,  Marc-Andre Rochon

IPC分类号： H04L12/28 ,  H04L12/46 ,  H04L12/427 ,  H04L12/701 ,  H04L12/42 ,  H04L12/931 ,  H04L12/935 ,  H04L12/751

CPC分类号： H04L12/4641 ,  H04L12/42 ,  H04L12/427 ,  H04L45/00 ,  H04L45/02 ,  H04L49/3009 ,  H04L49/351

摘要： A unique RVID is used for each spoke node to identify traffic flowing from that spoke node to the hub and from the hub to the spoke. Spoke nodes perform MAC learning on any frame containing their assigned unique RVID and only bridge traffic received on the ring to a client port if the traffic contains their assigned RVID. Thus, MAC learning at the spoke is localized to client routes, or to routes of interest that pass through the hub. The hub node learns C-VID/RVID-ringport bindings for traffic on the ring. When a frame is received on the ring, the hub will use the C-VID and RVID to determine the I-SID and forward the traffic onto the external network. When a frame is received from the external network, the hub node will use the I-SID & C-VID to determine the RVID of the spoke node, and then use the C-VID & RVID to determine, from its forwarding database, which ringport should be used to output the frame.

摘要翻译： 每个辐条节点都使用唯一的RVID来识别从该辐条节点到集线器以及从集线器到辐条的流量。 Spoke节点在包含其分配的唯一RVID的任何帧上执行MAC学习，并且只有在流量包含其分配的RVID时才将环上接收到的流量桥接到客户端端口。 因此，在轮辐处的MAC学习被本地化到客户端路由或通过集线器的兴趣路线。 集线器节点学习环路上的流量的C-VID / RVID-ringport绑定。 当在环上收到帧时，集线器将使用C-VID和RVID来确定I-SID并将流量转发到外部网络。 当从外部网络接收到帧时，集线器节点将使用I-SID和C-VID来确定分支节点的RVID，然后使用C-VID和RVID从其转发数据库中确定哪个 应该使用ringport来输出框架。

公开(公告)号：US08149692B2

公开(公告)日：2012-04-03

申请号：US12347362

申请日：2008-12-31

申请人： Marc Holness ,  Bashar Abdullah ,  Marc Andre Rochon

发明人： Marc Holness ,  Bashar Abdullah ,  Marc Andre Rochon

IPC分类号： H04J3/14 ,  G01R31/08 ,  H04L12/28

CPC分类号： H04L12/437 ,  H04L45/28

摘要： A method automatically discovers a topology of a communication network ring. The ring includes a plurality of nodes. Each node includes a first port and a second port. A ring topology request or a response to the ring topology request is received from at least one node on the ring. The ring topology request or the response to the ring topology request includes an identification of the at least one node and an indication of a hop count needed to reach the at least one node. The ring topology request or the response to the ring topology request is forwarded to at least one neighboring node on the ring through the first port. The topology is determined based on the identification of the at least one node, the hop count, and an identification of the first port.

摘要翻译： 一种方法自动发现通信网络环的拓扑。 该环包括多个节点。 每个节点包括第一端口和第二端口。 从环上的至少一个节点接收到环形拓扑请求或对环形拓扑请求的响应。 环形拓扑请求或对环形拓扑请求的响应包括至少一个节点的标识和到达至少一个节点所需的跳数的指示。 环形拓扑请求或对环形拓扑请求的响应通过第一个端口转发到环上的至少一个相邻节点。 基于至少一个节点的标识，跳数和第一端口的标识来确定拓扑。

公开(公告)号：US08018841B2

公开(公告)日：2011-09-13

申请号：US12344362

申请日：2008-12-26

申请人： Marc Holness ,  Abdullah Bashar

发明人： Marc Holness ,  Abdullah Bashar

IPC分类号： G06F11/22

CPC分类号： H04L12/437

摘要： Interworking an Ethernet Ring network with an Ethernet network with traffic engineered trunks (PBT network) enables traffic engineered trunks to be dual homed to the Ethernet ring network to enable for protection switching between active and backup trunk paths in the PBT network. In one embodiment, the active path will terminate at a first bridge node on the Ethernet ring network and the backup path will terminate at a second bridge node on the Ethernet ring network. Trunk state information is exchanged between the bridge nodes to enable the bridge nodes to determine which of the active and backup paths should be used to forward data on the trunk. Upon a change in trunk state, a flush message is transmitted on the Ethernet ring network to enable the nodes on the Ethernet ring network to relearn the path to the new responsible bridge node.

摘要翻译： 将以太网环网与具有流量工程中继线（PBT网络）的以太网环网互通使得流量工程中继线能够双重归属到以太网环网，以实现PBT网络中主备和中继路径之间的保护倒换。 在一个实施例中，活动路径将终止在以太网环网上的第一网桥节点处，并且备用路径将终止在以太网环网上的第二网桥节点处。 中继线状态信息在网桥节点之间进行交换，以使桥接节点能够确定哪个主动和备用路径应用于在中继线上转发数据。 在中继状态发生变化时，以太网环网上会发送刷新消息，使以太网环网上的节点重新获取新负责的桥接节点的路径。

公开(公告)号：US20090168647A1

公开(公告)日：2009-07-02

申请号：US12344362

申请日：2008-12-26

申请人： Marc Holness ,  Abdullah Bashar

发明人： Marc Holness ,  Abdullah Bashar

IPC分类号： H04L12/24 ,  H04L12/28

CPC分类号： H04L12/437

摘要： Interworking an Ethernet Ring network with an Ethernet network with traffic engineered trunks (PBT network) enables traffic engineered trunks to be dual homed to the Ethernet ring network to enable for protection switching between active and backup trunk paths in the PBT network. In one embodiment, the active path will terminate at a first bridge node on the Ethernet ring network and the backup path will terminate at a second bridge node on the Ethernet ring network. Trunk state information is exchanged between the bridge nodes to enable the bridge nodes to determine which of the active and backup paths should be used to forward data on the trunk. Upon a change in trunk state, a flush message is transmitted on the Ethernet ring network to enable the nodes on the Ethernet ring network to relearn the path to the new responsible bridge node.

摘要翻译： 将以太网环网与具有流量工程中继线（PBT网络）的以太网环网互通使得流量工程中继线能够双重归属到以太网环网，以实现PBT网络中主备和中继路径之间的保护倒换。 在一个实施例中，活动路径将终止在以太网环网上的第一网桥节点处，并且备用路径将终止在以太网环网上的第二网桥节点处。 中继线状态信息在网桥节点之间进行交换，以使桥接节点能够确定哪个主动和备用路径应用于在中继线上转发数据。 在中继状态发生变化时，以太网环网上会发送刷新消息，使以太网环网上的节点重新获取新负责的桥接节点的路径。

公开(公告)号：US08305938B2

公开(公告)日：2012-11-06

申请号：US12344355

申请日：2008-12-26

申请人： Marc Holness ,  Abdullah Bashar

发明人： Marc Holness ,  Abdullah Bashar

IPC分类号： G01R31/08

CPC分类号： H04L12/462 ,  H04L12/42

摘要： To enable an Ethernet ring to be dual homed into a spanning tree protocol controlled Ethernet network, spanning tree control packets (Bridged Protocol Data Units or BPDUs) are transported as data frames over the Ethernet ring. This allows the Ethernet ring to appear as a single link to the spanning tree protocol so that the spanning tree can extend over the link. However, since the spanning tree does not have visibility as to the internal structure of the ring, the spanning tree cannot block links on the Ethernet ring network. Conversely, BPDUs from the Ethernet ring are not transmitted into the Ethernet domain that is implementing the spanning tree, so that the spanning tree is not affected by the control mechanism in place on the Ethernet ring network.

摘要翻译： 为了使以太网环双重归属到生成树协议控制的以太网，生成树控制报文（桥接协议数据单元或BPDU）通过以太网环路作为数据帧传输。 这允许以太网环显示为生成树协议的单个链路，以便生成树可以在链路上延伸。 然而，由于生成树对环的内部结构没有可见性，所以生成树不能阻塞以太网环网上的链路。 相反，来自以太网环的BPDU不会传输到实现生成树的以太网域中，生成树不受以太网环网上的控制机制的影响。

公开(公告)号：US20090168671A1

公开(公告)日：2009-07-02

申请号：US12344355

申请日：2008-12-26

申请人： Marc Holness ,  Abdullah Bashar

发明人： Marc Holness ,  Abdullah Bashar

IPC分类号： H04L12/28

CPC分类号： H04L12/462 ,  H04L12/42

摘要： To enable an Ethernet ring to be dual homed into a spanning tree protocol controlled Ethernet network, spanning tree control packets (Bridged Protocol Data Units or BPDUs) are transported as data frames over the Ethernet ring. This allows the Ethernet ring to appear as a single link to the spanning tree protocol so that the spanning tree can extend over the link. However, since the spanning tree does not have visibility as to the internal structure of the ring, the spanning tree cannot block links on the Ethernet ring network. Conversely, BPDUs from the Ethernet ring are not transmitted into the Ethernet domain that is implementing the spanning tree, so that the spanning tree is not affected by the control mechanism in place on the Ethernet ring network.

摘要翻译： 为了使以太网环双重归属到生成树协议控制的以太网，生成树控制报文（桥接协议数据单元或BPDU）通过以太网环路作为数据帧传输。 这允许以太网环显示为生成树协议的单个链路，以便生成树可以在链路上延伸。 然而，由于生成树对环的内部结构没有可见性，所以生成树不能阻塞以太网环网上的链路。 相反，来自以太网环的BPDU不会传输到实现生成树的以太网域中，生成树不受以太网环网上的控制机制的影响。

公开(公告)号：US20070076719A1

公开(公告)日：2007-04-05

申请号：US11479694

申请日：2006-06-30

申请人： David Allan ,  Nigel Bragg ,  Marc Holness ,  Robert Friskney ,  Simon Parry

发明人： David Allan ,  Nigel Bragg ,  Marc Holness ,  Robert Friskney ,  Simon Parry

IPC分类号： H04L12/56

CPC分类号： H04L49/604 ,  H04L12/4662 ,  H04L12/66 ,  H04L45/22 ,  H04L45/28

摘要： An Ethernet virtual switched sub-network (VSS) is implemented as a virtual hub and spoke architecture overlaid on hub and spoke connectivity built of a combination of Provider Backbone Transport (spokes) and a provider backbone bridged sub-network (hub). Multiple VSS instances are multiplexed over top of the PBT/PBB infrastructure. A loop free resilient Ethernet carrier network is provided by interconnecting Provider Edge nodes through access sub-networks to Provider Tandems to form Provider Backbone Transports spokes with a distributed switch architecture of the Provider Backbone Bridged hub sub-network. Provider Backbone transport protection groups may be formed from the Provider Edge to diversely homed Provider Tandems by defining working and protection trunks through the access sub-network. The Provider Backbone Transport trunks are Media Access Control (MAC) addressable by the associated Provider Edge address or by a unique address associated with the protection group in the Provider Backbone Bridged network domain.

摘要翻译： 以太网虚拟交换子网（VSS）被实现为覆盖在由提供商骨干传输（辐射）和提供商骨干桥接子网（集线器））组合的集线器和辐条连接上的虚拟集线器和分支架构。 多个VSS实例在PBT / PBB基础结构的顶部进行复用。 通过将Provider Edge节点通过接入子网络互连到Provider Tandem来提供无循环的弹性以太网运营商网络，以形成具有提供商骨干桥接子网络的分布式交换机架构的Provider Backbone Transports辐条。 提供商骨干传输保护组可以通过在接入子网中定义工作和保护中继，从提供商边缘形成多样化的提供商串联。 提供商骨干传输干线是可由相关联的提供商边缘地址寻址的媒体访问控制（MAC）或通过与提供商骨干桥接网络域中的保护组相关联的唯一地址。

公开(公告)号：US08369330B2

公开(公告)日：2013-02-05

申请号：US11479694

申请日：2006-06-30

申请人： David Allan ,  Nigel Bragg ,  Marc Holness ,  Robert Friskney ,  Simon Parry

发明人： David Allan ,  Nigel Bragg ,  Marc Holness ,  Robert Friskney ,  Simon Parry

IPC分类号： H04L12/28

CPC分类号： H04L49/604 ,  H04L12/4662 ,  H04L12/66 ,  H04L45/22 ,  H04L45/28

摘要： An Ethernet virtual switched sub-network (VSS) is implemented as a virtual hub and spoke architecture overlaid on hub and spoke connectivity built of a combination of Provider Backbone Transport (spokes) and a provider backbone bridged sub-network (hub). Multiple VSS instances are multiplexed over top of the PBT/PBB infrastructure. A loop free resilient Ethernet carrier network is provided by interconnecting Provider Edge nodes through access sub-networks to Provider Tandems to form Provider Backbone Transports spokes with a distributed switch architecture of the Provider Backbone Bridged hub sub-network. Provider Backbone transport protection groups may be formed from the Provider Edge to diversely homed Provider Tandems by defining working and protection trunks through the access sub-network. The Provider Backbone Transport trunks are Media Access Control (MAC) addressable by the associated Provider Edge address or by a unique address associated with the protection group in the Provider Backbone Bridged network domain.