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1. 发明授权

US09036641B2 Provider backbone bridging—provider backbone transport internetworking 有权
标题翻译：提供商骨干桥接提供商骨干传输网络互连
公开(公告)号：US09036641B2
公开(公告)日：2015-05-19
申请号：US14021063
申请日：2013-09-09
申请人： RPX Clearinghouse LLC
发明人： David Allan , Nigel Bragg , Marc Holness , Robert J. Friskney , Simon Parry
IPC分类号： H04W4/00 , H04L12/931 , H04L12/46 , H04L12/66 , H04L12/707 , H04L12/703
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。

2. 发明授权

US09356862B2 Differential forwarding in address-based carrier networks 有权
公开(公告)号：US09356862B2
公开(公告)日：2016-05-31
申请号：US14478001
申请日：2014-09-05
申请人： RPX Clearinghouse LLC
发明人： Robert Friskney , Nigel Bragg , Simon Parry , Peter Ashwood-Smith , David Allan , Simon Brueckheimer
IPC分类号： H04L12/28 , H04L12/741 , H04L12/46 , H04L12/715 , H04L12/721 , H04L12/931 , H04L12/803 , H04L12/937
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.

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