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1. 发明申请

WO2005099183A1 DIFFERENTIAL FORWARDING IN ADDRESS-BASED CARRIER NETWORKS 审中-公开
标题翻译：基于地址的运营商网络的差异转发
公开(公告)号：WO2005099183A1
公开(公告)日：2005-10-20
申请号：PCT/GB2005/001332
申请日：2005-04-06
申请人： NORTEL NETWORKS LIMITED , NORTEL NETWORKS UK LIMITED , FRISKNEY, Robert , BRAGG, Nigel , PARRY, Simon , ASHWOOD-SMITH, Peter , ALLEN, David , BRUECKHEIMER, Simon , GIBBON, Mark
发明人： FRISKNEY, Robert , BRAGG, Nigel , PARRY, Simon , ASHWOOD-SMITH, Peter , ALLEN, David , BRUECKHEIMER, Simon , GIBBON, Mark
IPC分类号： H04L12/46
CPC分类号： H04L45/74 , H04L12/4641 , H04L12/4645 , H04L45/54 , H04L45/64 , H04L45/66 , H04L47/122 , H04L49/205 , H04L49/253 , H04L49/254 , H04L49/351 , H04L49/354
摘要： The invention relates to enabling differential forwarding in address-based carrier networks such as Ethernet networks. There is described a method of and connection controller for establishing connections (76, 77) in a frame-based communications network comprising nodes (71-75 and 78) such as Ethernet switches. The connections are established by configuring, in various of the nodes, mappings for forwarding data frames, such as Ethernet frames. The mappings are from a combination of a) a destination (or source) address corresponding to a destination (or source) node (73) of the connection and b) an identifier, such as a VLAN tag. The mappings are to selected output ports of the various nodes. By using the combination of destination (or source) address AND identifier, the mappings enable data frames belonging to different connections (76, 77) to be forwarded differentially (ie forwarded on different output ports) at a node (75) despite the different connections having the same destination node. This enables flexibility in routing connections and the ability to perform traffic engineering.
摘要翻译：本发明涉及在诸如以太网的基于地址的运营商网络中实现差分转发。描述了在包括诸如以太网交换机的节点（71-75和78）的基于帧的通信网络中建立连接（76,77）的方法和连接控制器。通过在各种节点中配置用于转发数据帧（例如以太网帧）的映射来建立连接。映射来自a）与该连接的目的地（或源）节点（73）对应的目的地（或源）地址的组合，以及b）诸如VLAN标签的标识符。映射到各个节点的选定输出端口。通过使用目的地（或源）地址AND标识符的组合，映射使得属于不同连接（76,77）的数据帧能够在节点（75）处差分地转发（即，在不同的输出端口上转发），尽管不同的连接具有相同的目的地节点。这使得路由连接的灵活性和执行流量工程的能力。

2. 发明申请

WO2009079771A1 EVOLUTION OF ETHERNET NETWORKS 审中-公开
标题翻译：以太网网络演进
公开(公告)号：WO2009079771A1
公开(公告)日：2009-07-02
申请号：PCT/CA2008/002234
申请日：2008-12-19
申请人： NORTEL NETWORKS LIMITED , BRAGG, Nigel , ALLAN, David , PARRY, Simon , FRISKNEY, Robert , BRUECKHEIMER, Simon
发明人： BRAGG, Nigel , ALLAN, David , PARRY, Simon , FRISKNEY, Robert , BRUECKHEIMER, Simon
IPC分类号： H04L12/40 , H04L12/56
CPC分类号： H04L12/4641 , H04L12/462 , H04L12/4654 , H04L12/4658 , H04L12/4662 , H04L41/12 , H04L43/50 , H04L45/745
摘要： An Ethernet network comprises nodes which support a plurality of different forwarding modes. A range of VLAN Identifiers (VIDs) are allocated to each of the forwarding modes. Connections are configured between a source node and a destination node of the network using different forwarding modes. Packets carrying data traffic are sent to the destination node by selectively setting a VID in a packet to a first value, to transfer a packet via a first connection and a first forwarding mode, and a second value to transfer a packet via the second connection and the second forwarding mode. Packets received from both of the connections and sent on to an end-user. VLAN Identifiers can be allocated to different releases of functionality at nodes (e.g. software releases) such that packets are forwarded via a set of nodes supporting a first release, or via a set of nodes supporting a second release. It is possible to provide a controlled and disruption-free network evolution.
摘要翻译：以太网网络包括支持多个不同转发模式的节点。每个转发模式都分配了一系列VLAN标识符（VID）。使用不同的转发模式在网络的源节点和目的节点之间配置连接。通过选择性地将数据包中的VID设置为第一值，经由第一连接和第一转发模式传送分组，以及经由第二连接传送分组的第二值，将携带数据业务的分组发送到目的地节点，第二转发模式。从两个连接接收到的数据包发送给最终用户。 VLAN标识符可以被分配给节点（例如软件版本）上的不同版本的功能，使得分组经由支持第一版本的一组节点或经由支持第二版本的一组节点转发。可以提供受控和无中断的网络演进。

3. 发明申请

WO2007051960A1 MULTILINK TRUNKING FOR ENCAPSULATED TRAFFIC 审中-公开
标题翻译：多用途交通工具
公开(公告)号：WO2007051960A1
公开(公告)日：2007-05-10
申请号：PCT/GB2006/003527
申请日：2006-09-22
申请人： Nortel Networks Limited , Nortel Networks UK Limited , PARRY, Simon , FRISKNEY, Robert
发明人： PARRY, Simon , FRISKNEY, Robert
IPC分类号： H04L12/56
CPC分类号： H04L12/4658 , H04L12/4633 , H04L45/245 , Y02D50/30
摘要： A node of a frame-based network has a group of outgoing links (133) which are to be treated as an aggregated group of links 135) . A frame distributor (120) performs a distribution function (122) on data frames (126) which are intended for transmission on the group of links (135) . The frame distributor (120) determines if the data frame (126) is an encapsulated data frame which forms part of a tunnelled traffic path across the network. If the data frame (126) does form part of a tunnelled traffic path across the network, the frame distributor (120) allocates the data frame to one of the group of links (133) using at least part of an identifier from the header of the data frame (126) . The identifier represents a service with which the data frame is associated, a customer or user of the data frame, or the tunnelled traffic path, which have greater variability than the backbone destination and source addresses.
摘要翻译：基于帧的网络的节点具有要被视为聚合的链路组135的一组出站链路（133）。帧分配器（120）在旨在在链路组（135）上传输的数据帧（126）上执行分发功能（122）。帧分配器（120）确定数据帧（126）是否是形成跨越网络的隧道传输路径的一部分的封装数据帧。如果数据帧（126）确实形成跨越网络的隧道传输路径的一部分，则帧分配器（120）使用来自标题的标题的至少一部分将数据帧分配给该组链路（133）中的一个数据帧（126）。标识符表示与数据帧相关联的服务，数据帧的客户或用户或隧道传输的路径，其具有比主干目的地址和源地址更大的可变性。

4. 发明申请

WO2007088341A1 METHOD AND DEVICE FOR CONNECTING SEPARATE SPANNING TREE NETWORKS 审中-公开
标题翻译：用于连接单独的扫描树网络的方法和设备
公开(公告)号：WO2007088341A1
公开(公告)日：2007-08-09
申请号：PCT/GB2007/000306
申请日：2007-01-30
申请人： NORTEL NETWORKS LIMITED , BRAGG, Nigel , BOTTORFF, Paul , ALLAN, David , FRISKNEY, Robert , PARRY, Simon
发明人： BRAGG, Nigel , BOTTORFF, Paul , ALLAN, David , FRISKNEY, Robert , PARRY, Simon
IPC分类号： H04L12/56
CPC分类号： H04L45/48 , H04L45/04
摘要： A managed frame-forwarding network comprises a plurality of nodes interconnected by links, with each node being arranged to forward data frames according to forwarding instructions stored at the node which specify a combination of a route identifier and a network address carried by a received data frame. A sub-set of nodes are selected as waypoint nodes. A spanning tree is then built off each of the selected waypoint nodes. Each spanning tree defines a loop-free path between a waypoint node at the root of the spanning tree and a set of outlying nodes. Connections are planned between roots of the spanning trees and an identifier is allocated to each planned connection between a pair of spanning trees. An end-to-end route between any outlying node on a first of the spanning trees and any outlying node on a second of the spanning trees comprises the path defined by the first spanning tree, a planned connection between waypoint nodes at the root of the first and second spanning trees and the path defined by the second spanning tree.
摘要翻译：被管理的帧转发网络包括通过链路互连的多个节点，其中每个节点被安排为根据存储在节点处的转发指令来转发数据帧，该节点指定路由标识符和接收的数据帧承载的网络地址的组合。选择节点的子集作为路点节点。然后，每个选定的航点节点都会生成生成树。每个生成树定义生成树根节点和一组外围节点之间的无循环路径。在生成树的根之间计划连接，并且将标识符分配给一对生成树之间的每个计划连接。在第一个生成树上的任何离开的节点和第二个生成树上的任何外围节点之间的端到端路由包括由第一个生成树定义的路径，在根节点的路点节点之间的计划的连接第一个和第二个生成树以及由第二个生成树定义的路径。

5. 发明申请

WO2007038853A1 PROVIDER BACKBONE BRIDGING - PROVIDER BACKBONE TRANSPORT INTERNETWORKING 审中-公开
标题翻译： PROVIDER BACKBONE BRIDGING - PROVIDER BACKBONE TRANSPORT INTERNETWORKING
公开(公告)号：WO2007038853A1
公开(公告)日：2007-04-12
申请号：PCT/CA2006/001493
申请日：2006-09-11
申请人： NORTEL NETWORKS LIMITED
发明人： ALLAN, David , BRAGG, Nigel , HOLNESS, Marc , FRISKNEY, Robert , PARRY, Simon
IPC分类号： H04L12/46 , H04L12/28 , H04L12/56 , H04L12/66
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）被实现为虚拟集线器和分支架构，覆盖在由提供商骨干传输（辐射）和提供商骨干网桥接子网（集线器）的组合构成的集线器和辐条连接上。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从接入子网络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。

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