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11. 发明授权

US09602348B2 Methods and apparatus for detecting and handling split brain issues in a link aggregation group 有权
公开(公告)号：US09602348B2
公开(公告)日：2017-03-21
申请号：US14400619
申请日：2012-08-29
申请人： János Farkas , Balázs Peter Gerö , Panagiotis Saltsidis
发明人： János Farkas , Balázs Peter Gerö , Panagiotis Saltsidis
IPC分类号： H04L12/24 , H04L12/709 , H04L12/26
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.

12. 发明授权

US09077626B2 In-service upgrade of provider bridge networks 有权
标题翻译：提供商网络的在线升级
公开(公告)号：US09077626B2
公开(公告)日：2015-07-07
申请号：US13700822
申请日：2011-01-24
申请人： János Farkas , Balázs Peter Gerö , Panagiotis Saltsidis , Attila Takács
发明人： János Farkas , Balázs Peter Gerö , Panagiotis Saltsidis , Attila Takács
IPC分类号： H04L12/28 , H04L12/24 , H04L12/46 , G06F9/445
CPC分类号： H04L41/082 , G06F8/656 , H04L12/4645 , H04L12/4675 , H04L12/4687
摘要： A system and method for in-service migration for a Virtual Local Area Network, VLAN, service if a Provider Bridge Metro Ethernet Network, PB MEN, is upgraded to a Provider Backbone Bridge, PBB, MEN or an Internet Protocol/Multi Protocol Label Switching, IP/MPLS, MEN. After the deployment of the new PBB or IP/MPLS technology, a sequence of management actions are performed to configure PBB or IP/MPLS edge nodes to use the new technology as well as the old PB-based technology to support the VLAN service. Both old and new connectivity structures are maintained in the edge nodes during the entire migration process. Customer traffic is then redirected per edge node to the new technology. When each edge node entirely provides the VLAN service under the new technology, the migration is complete.
摘要翻译：如果提供商桥梁城域以太网网络PB MEN，升级到提供商骨干桥，PBB，MEN或互联网协议/多协议标签交换，则虚拟局域网，VLAN，服务的在线迁移的系统和方法，IP / MPLS，MEN。在部署新的PBB或IP / MPLS技术后，执行一系列管理操作，以配置PBB或IP / MPLS边缘节点以使用新技术以及旧的基于PB的技术来支持VLAN服务。在整个迁移过程中，边缘节点都维护旧的和新的连接结构。然后将客户流量重定向到每个边缘节点到新技术。当每个边缘节点完全在新技术下提供VLAN服务时，迁移完成。

13. 发明申请

US20130254327A1 DATA PLANE FOR RESILIENT NETWORK INTERCONNECT 有权
公开(公告)号：US20130254327A1
公开(公告)日：2013-09-26
申请号：US13146279
申请日：2011-06-20
申请人： Balázs Peter Gerö , János Farkas , Panagiotis Saltsidis , Zhemin Ding
发明人： Balázs Peter Gerö , János Farkas , Panagiotis Saltsidis , Zhemin Ding
IPC分类号： H04L12/24
CPC分类号： H04L41/12 , H04L12/4625 , H04L12/4633 , H04L12/4641 , H04L45/04 , H04L45/306 , H04L2212/00
摘要： The present disclosure relates to a technique for forwarding frames received by a network interconnect node (114) of an internal network (112) having the network interconnect node (114), one or more internal network nodes (118, 120) and one or more other internal network interconnect nodes (116), the network interconnect node (114) having a network interconnect interface for communicating with an external network interconnect node (104) of an external network (102) and a network interface for communicating with one or more of the other internal network interconnect nodes (116) and with one or more of the internal network nodes (118, 120), wherein the frames are related to a service provided by at least one of the external network (102) and the internal network (112). A method embodiment comprises at least one of the steps of: receiving, from the external network interconnect node (104), frames at the network interconnect interface and forwarding according to a Virtual Local Area Network (VLAN) tagging forwarding process, by the network interconnect node (114), the frames to one or more of the other internal network interconnect nodes (116) or to one or more of the internal network nodes (118, 120) on a network link via the network interface by considering whether the network interconnect node (114) is active for the service associated with the frames; and receiving, from one or more of the other internal network interconnect nodes (116) or from one or more of the internal network nodes (118, 120), frames at the network interface and forwarding according to a VLAN tagging forwarding process, by the network interconnect node (114), the frames to one or more of the other internal network interconnect nodes (116) or to one or more of the internal network nodes (118, 120) on a network link via the network interface or to the external network interconnect node (104) via the network interconnect interface based on at least one of whether the frames are encapsulated frames and whether the network interconnect node (114) is active for the service.

14. 发明授权

US08837329B2 Method and system for controlled tree management 有权
标题翻译：受控树管理方法和系统
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。

15. 发明授权

US08467317B2 Method and apparatus for network tree management 有权
标题翻译：网络树管理方法与装置
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
IPC分类号： H04L12/28 , H04L12/56
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。

16. 发明申请

US20120170489A1 Method And Apparatus For Network Tree Management 有权
标题翻译：网络树管理方法与装置
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。

17. 发明授权

US08953616B2 Shortest path bridging in a multi-area network 有权
标题翻译：多区域网络中最短路径桥接
公开(公告)号：US08953616B2
公开(公告)日：2015-02-10
申请号：US13442139
申请日：2012-04-09
申请人： David Ian Allan , János Farkas , Panagiotis Saltsidis , Martin Julien
发明人： David Ian Allan , János Farkas , Panagiotis Saltsidis , Martin Julien
IPC分类号： H04L12/28 , H04L12/56
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。

18. 发明申请

US20100054157A1 Method And Apparatus For Network Tree Management 有权
标题翻译：网络树管理方法与装置
公开(公告)号：US20100054157A1
公开(公告)日：2010-03-04
申请号：US12523781
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 , H04L12/56
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。

19. 发明申请

US20130195111A1 Shortest Path Bridging in a Multi-Area Network 有权
标题翻译：多区域网络中的最短路径桥接
公开(公告)号：US20130195111A1
公开(公告)日：2013-08-01
申请号：US13442139
申请日：2012-04-09
申请人： David Ian Allan , János Farkas , Panagiotis Saltsidis , Martin Julien
发明人： David Ian Allan , János Farkas , Panagiotis Saltsidis , Martin Julien
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。

20. 发明授权

US08155030B2 Method and apparatus for network tree management 有权
标题翻译：网络树管理方法与装置
公开(公告)号：US08155030B2
公开(公告)日：2012-04-10
申请号：US12523781
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 , H04L12/56
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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