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公开(公告)号：US08953616B2
公开(公告)日：2015-02-10
申请号：US13442139
申请日：2012-04-09
CPC分类号： H04L45/026 , H04L12/462 , H04L12/4625 , H04L12/4641 , H04L45/02 , H04L45/16 , H04L45/18 , H04L45/66
摘要： A method that improves multi-area routed Ethernet network design, in which multipath implementation in each of the areas is independent of each other area to allow optimal network design in each area. The network implements a shortest path bridging medium access control (SPBM) protocol. The areas include a Level 2 (L2) routing area coupled to a Level 1 (L1) routing area via multiple area border bridges (ABBs). The L1 routing area including a backbone edge bridge (BEB) coupled to the ABBs via multiple L1 multipath instances identified by respective backbone VLAN identifiers (B-VIDs). The ABBs receive an advertisement from the BEB that indicates a set of BEB identifiers, each of which identifies the BEB and is associated with a respective B-VID. Each of the BEB identifiers is unique. The ABBs also advertise into the L2 routing area, and translate the B-VIDs based on service identifiers for frames transiting the ABBs.
摘要翻译： 一种改进多区域路由以太网设计的方法，其中每个区域中的多径实现独立于彼此区域，以允许每个区域中的最佳网络设计。 网络实现了最短路径桥接介质访问控制（SPBM）协议。 这些区域包括通过多个区域边界网桥（ABB）耦合到1级（L1）路由区域的2级（L2）路由区域。 L1路由区域包括通过由相应主干VLAN标识符（B-VID）标识的多个L1多路径实例耦合到ABB的主干边缘桥（BEB）。 ABB从BEB接收到一个指示一组BEB标识符的广告，每个BEB标识符标识BEB并与相应的B-VID相关联。 每个BEB标识符是唯一的。 ABB还向L2路由区域进行通告，并根据经过ABB的帧的服务标识符翻译B-VID。
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公开(公告)号：US20130195111A1
公开(公告)日：2013-08-01
申请号：US13442139
申请日：2012-04-09
IPC分类号： H04L12/28
CPC分类号： H04L45/026 , H04L12/462 , H04L12/4625 , H04L12/4641 , H04L45/02 , H04L45/16 , H04L45/18 , H04L45/66
摘要： A method that improves multi-area routed Ethernet network design, in which multipath implementation in each of the areas is independent of each other area to allow optimal network design in each area. The network implements a shortest path bridging medium access control (SPBM) protocol. The areas include a Level 2 (L2) routing area coupled to a Level 1 (L1) routing area via multiple area border bridges (ABBs). The L1 routing area including a backbone edge bridge (BEB) coupled to the ABBs via multiple L1 multipath instances identified by respective backbone VLAN identifiers (B-VIDs). The ABBs receive an advertisement from the BEB that indicates a set of BEB identifiers, each of which identifies the BEB and is associated with a respective B-VID. Each of the BEB identifiers is unique. The ABBs also advertise into the L2 routing area, and translate the B-VIDs based on service identifiers for frames transiting the ABBs.
摘要翻译： 一种改进多区域路由以太网设计的方法，其中每个区域中的多径实现独立于彼此区域，以允许每个区域中的最佳网络设计。 网络实现了最短路径桥接介质访问控制（SPBM）协议。 这些区域包括通过多个区域边界网桥（ABB）耦合到1级（L1）路由区域的2级（L2）路由区域。 L1路由区域包括通过由相应主干VLAN标识符（B-VID）标识的多个L1多路径实例耦合到ABB的主干边缘桥（BEB）。 ABB从BEB接收到一个指示一组BEB标识符的广告，每个BEB标识符标识BEB并与相应的B-VID相关联。 每个BEB标识符是唯一的。 ABB还向L2路由区域进行通告，并根据经过ABB的帧的服务标识符翻译B-VID。
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公开(公告)号：US09240928B2
公开(公告)日：2016-01-19
申请号：US13146279
申请日：2011-06-20
IPC分类号： G06F15/16 , H04L12/24 , H04L12/46 , H04L12/715 , H04L12/725
CPC分类号： H04L41/12 , H04L12/4625 , H04L12/4633 , H04L12/4641 , H04L45/04 , H04L45/306 , H04L2212/00
摘要： A network interconnect node of an internal network may communicate with an external network interconnect node of an external network, other internal network interconnect node(s) and internal network node(s). The network interconnect node may receive frames from the external network interconnect node and forward them according to a Virtual Local Area Network (VLAN) tagging forwarding process to other internal network interconnect node(s) or internal network node(s) based on whether the network interconnect node is active for the service associated with the frames. The network interconnect node may receive frames from other internal network interconnect node(s) or from internal network nodes and forward them according to the VLAN tagging forwarding process to other internal network interconnect nodes, internal network nodes or the external network interconnect node based on whether the frames are encapsulated frames and/or whether the network interconnect node is active for the service.
摘要翻译： 内部网络的网络互连节点可以与外部网络的外部网络互连节点，其他内部网络互连节点和内部网络节点进行通信。 网络互连节点可以从外部网络互连节点接收帧，并根据虚拟局域网（VLAN）标记转发过程将其转发到其他内部网络互连节点或内部网络节点，基于网络 互连节点对于与帧相关联的服务是活动的。 网络互连节点可以从其他内部网络互连节点或内部网络节点接收帧，并根据VLAN标记转发过程将其转发到其他内部网络互连节点，内部网络节点或外部网络互连节点，基于是否 帧是封装帧和/或网络互连节点是否对于该服务是活动的。
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公开(公告)号：US08837329B2
公开(公告)日：2014-09-16
申请号：US12525062
申请日：2008-01-18
申请人： János Farkas , Csaba Antal , Attila Takács , Panagiotis Saltsidis
发明人： János Farkas , Csaba Antal , Attila Takács , Panagiotis Saltsidis
IPC分类号： H04L12/28 , H04L12/705 , H04L12/721 , H04L12/751 , H04L12/703 , H04L12/753 , H04L12/46 , H04L12/24
CPC分类号： H04L12/462 , H04L41/069 , H04L41/0853 , H04L41/0856 , H04L41/12 , H04L45/02 , H04L45/12 , H04L45/18 , H04L45/28 , H04L45/48
摘要： There is disclosed a method and apparatus for facilitating a network, such as an Ethernet LAN, for efficient forwarding of data traffic by collecting neighbor information, generating and distributing link state advertisements, populating a topology database for the network, and calculating trees for each bridge serving as a root bridge. In a preferred embodiment the method and system also prepare one or more backup topologies, and store them for use if they are needed due to a failure condition detected in the network. In a particularly preferred embodiment, probabilities are assigned to various potential failure conditions, and the probability values are used to decide which backup topologies to calculate, store, or use.
摘要翻译： 公开了一种方法和装置，用于通过收集邻居信息，生成和分发链路状态通告，填充网络的拓扑数据库以及计算每个网桥的树，从而方便诸如以太网LAN的网络来有效地转发数据流量 作为根桥。 在优选实施例中，方法和系统还准备一个或多个备用拓扑，并且如果由于在网络中检测到故障状况而需要，则存储它们以供使用。 在特别优选的实施例中，将概率分配给各种潜在的故障条件，并且概率值用于决定要计算，存储或使用哪些备份拓扑。
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公开(公告)号：US20130246635A1
公开(公告)日：2013-09-19
申请号：US13818883
申请日：2012-06-28
IPC分类号： H04L12/24
CPC分类号： H04L41/0654 , H04L41/0663 , H04L45/245 , Y02D50/30
摘要： Methods and apparatus are disclosed for applying multiple Link Aggregation Group (LAG) entities on the same set of physical links, thus making bundling of individual services or conversations possible by the different LAG entities within Link Aggregation. Each LAG entity is configured such that a single physical link is Active and all the other links are Standby. Each LAG entity may be regarded as a “bundle.” Thus the services/conversations are bundled into a LAG entity and are handed-off on the Active link during normal operation. If service hand-off is not possible on the Active link (e.g., due to a failure), then the LAG entity switches over to a Standby link thus the service/conversation is handed-off on that formerly Standby link. Bundling may simplify operations of control and signaling.
摘要翻译： 公开了用于在同一组物理链路上应用多个链路聚合组（LAG）实体的方法和装置，从而使链路聚合中的不同LAG实体可以捆绑各个服务或对话。 每个LAG实体被配置为使得单个物理链路是活动的，并且所有其他链路是待机。 每个LAG实体可以被视为“捆绑”。 因此，服务/对话被捆绑成LAG实体，并且在正常操作期间在活动链路上被切换。 如果在Active链路上无法进行业务切换（例如，由于故障），则LAG实体切换到备用链路，从而在以前的待机链路上进行业务/对话切换。 捆绑可以简化控制和信令的操作。
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公开(公告)号：US08467317B2
公开(公告)日：2013-06-18
申请号：US13414927
申请日：2012-03-08
申请人： János Farkas , Csaba Antal , Attila Takács , Panagiotis Saltsidis
发明人： János Farkas , Csaba Antal , Attila Takács , Panagiotis Saltsidis
CPC分类号： H04L12/462 , H04L45/02 , H04L45/025 , H04L45/04 , H04L45/48
摘要： There is disclosed a manner of managing the active topology, that is the scheme for forwarding data, in a computer network such as an Ethernet local area network. A root bridge is selected from a plurality of bridges in the network; the root bridge calculating at least one spanning tree from a topology database that has been populated by bridge neighbor information gleaned from link state advertising messages. The root bridge may also calculate an alternate topology for implementation in the event a failure condition that affects the primary spanning tree is detected. The root bridge then advertises the spanning tree and remotely configures the port states of the bridges in the spanning tree through tree advertising messages that the bridges are arranged to process and set their ports accordingly.
摘要翻译： 公开了在诸如以太网局域网的计算机网络中管理活动拓扑的方式，即用于转发数据的方案。 从网络中的多个桥中选择根桥; 根桥从已经从链接状态广告消息收集的桥接邻居信息填充的拓扑数据库中计算至少一个生成树。 如果检测到影响主生成树的故障条件，则根桥也可以计算备用拓扑。 根桥然后通告生成树，并通过树形广告消息远程配置生成树中的网桥的端口状态，桥梁被布置为相应地处理和设置其端口。
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公开(公告)号：US20120170489A1
公开(公告)日：2012-07-05
申请号：US13414927
申请日：2012-03-08
申请人： János Farkas , Csaba Antal , Attila Takács , Panagiotis Saltsidis
发明人： János Farkas , Csaba Antal , Attila Takács , Panagiotis Saltsidis
IPC分类号： H04L12/44
CPC分类号： H04L12/462 , H04L45/02 , H04L45/025 , H04L45/04 , H04L45/48
摘要： There is disclosed a manner of managing the active topology, that is the scheme for forwarding data, in a computer network such as an Ethernet local area network. A root bridge is selected from a plurality of bridges in the network; the root bridge calculating at least one spanning tree from a topology database that has been populated by bridge neighbor information gleaned from link state advertising messages. The root bridge may also calculate an alternate topology for implementation in the event a failure condition that affects the primary spanning tree is detected. The root bridge then advertises the spanning tree and remotely configures the port states of the bridges in the spanning tree through tree advertising messages that the bridges are arranged to process and set their ports accordingly.
摘要翻译： 公开了在诸如以太网局域网的计算机网络中管理活动拓扑的方式，即用于转发数据的方案。 从网络中的多个桥中选择根桥; 根桥从已经从链接状态广告消息收集的桥接邻居信息填充的拓扑数据库中计算至少一个生成树。 如果检测到影响主生成树的故障条件，则根桥也可以计算备用拓扑。 根桥然后通告生成树，并通过树形广告消息远程配置生成树中的网桥的端口状态，桥梁被布置为相应地处理和设置其端口。
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公开(公告)号：US10708132B2
公开(公告)日：2020-07-07
申请号：US14369322
申请日：2011-12-29
IPC分类号： H04L12/24 , H04L12/751
摘要： A technique for status change handling in an interconnect node is described, wherein the node comprises a data plane that can assume, per service, a passive or active status. A method aspect in the node comprises transmitting, to another node, a first indication that a change has been or is about to be performed, awaiting, from the other node, reception of a second indication that the data plane in the other node has been set to the passive status, and activating, responsive to the received indication, the data plane of the node from the passive status to the active status. The method aspect in the other node further comprises receiving, from the node, the first indication, passivating, responsive to the receiving step, the data plane being in the active status to the passive status, and transmitting, upon completion of the passivating step, the second indication.
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9.发明申请Methods and Apparatus for Detecting and Handling Split Brain Issues in a Link Aggregation Group 有权检测和处理链路聚合组中分裂大脑问题的方法和装置公开(公告)号：US20150172121A1
公开(公告)日：2015-06-18
申请号：US14400619
申请日：2012-08-29
IPC分类号： H04L12/24 , H04L12/26 , H04L12/709
CPC分类号： H04L41/0816 , H04L41/0672 , H04L43/0811 , H04L45/245 , Y02D50/30
摘要： Methods and apparatus for operating a virtual node in a LAG that includes a first virtual node and a second virtual node are disclosed. The first virtual node includes at least a first fellow node and a second fellow node. In one exemplary method, the first fellow node receives, from the second virtual node, first control information comprising a system ID and first configuration information associated with the LAG. The first control information is compared with reference configuration information representing previously established expected configuration information associated with the LAG. Based on that comparison, and at least one additional criterion, a split brain condition may be determined to exist in the LAG. In a complementary fashion, a fellow node of the second virtual node may be configured to alter its transmitted configuration information depending on whether it is able to communicate with its fellow node in the second virtual node.
摘要翻译： 公开了在包括第一虚拟节点和第二虚拟节点的LAG中操作虚拟节点的方法和装置。 第一虚拟节点至少包括第一节点和第二节点。 在一个示例性方法中，第一伙伴节点从第二虚拟节点接收包括与该LAG相关联的系统ID和第一配置信息的第一控制信息。 将第一控制信息与表示与LAG相关联的先前建立的预期配置信息的参考配置信息进行比较。 基于该比较，以及至少一个附加标准，可以确定在LAG中存在裂脑状况。 以互补的方式，第二虚拟节点的节点可以被配置为根据它是否能够与第二虚拟节点中的其他节点通信来改变其发送的配置信息。
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公开(公告)号：US20150009861A1
公开(公告)日：2015-01-08
申请号：US14369322
申请日：2011-12-29
IPC分类号： H04L12/24
CPC分类号： H04L41/0816 , H04L41/00 , H04L41/12 , H04L45/02
摘要： A technique for status change handling in an interconnect node is described, wherein the node comprises a data plane that can assume, per service, a passive or active status. A method aspect in the node comprises transmitting, to another node, a first indication that a change has been or is about to be performed, awaiting, from the other node, reception of a second indication that the data plane in the other node has been set to the passive status, and activating, responsive to the received indication, the data plane of the node from the passive status to the active status. The method aspect in the other node further comprises receiving, from the node, the first indication, passivating, responsive to the receiving step, the data plane being in the active status to the passive status, and transmitting, upon completion of the passivating step, the second indication.
摘要翻译： 描述了一种用于互连节点中的状态变化处理的技术，其中该节点包括一个数据平面，每个服务可以呈现被动状态或活动状态。 节点中的方法方面包括向另一个节点发送改变已经或将要被执行的第一指示，等待从另一个节点接收另一个节点中的数据平面的第二指示 设置为被动状态，并响应于接收到的指示，将节点的数据平面从被动状态激活到活动状态。 另一节点中的方法方面还包括：从节点接收第一指示，响应于接收步骤钝化数据平面处于活动状态到被动状态，并且在钝化步骤完成时， 第二个指示。
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