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    • 3. 发明授权
    • Methods and devices for improving the multiple spanning tree protocol
    • 改进多生成树协议的方法和设备
    • US07889681B2
    • 2011-02-15
    • US11182564
    • 2005-07-14
    • Norman Finn
    • Norman Finn
    • H04L12/28
    • H04L12/462H04L12/4633H04L12/4645H04L45/00H04L45/16H04L45/48
    • The present invention provides improved unicast routing, multicast routing and unicast load sharing as compared with conventional methods. Preferred implementations of the invention provide improvements to IEEE 802.1Q. According to preferred aspects of the invention, each bridge is the root of its own multiple spanning tree instance (“MSTI”). Preferred implementations of the invention require no learning of media access control (“MAC”) addresses on the backbone of a network. Some methods of the invention can resolve spanning tree asymmetries. Preferred implementations of the invention require a very low computational load for control protocols.
    • 与常规方法相比,本发明提供了改进的单播路由,组播路由和单播负载共享。 本发明的优选实现提供了对IEEE 802.1Q的改进。 根据本发明的优选方面,每个桥是其自己的多生成树实例(“MSTI”)的根。 本发明的优选实现不需要在网络的骨干网上学习媒体访问控制(“MAC”)地址。 本发明的一些方法可以解决生成树不对称。 对于控制协议,本发明的优选实现需要非常低的计算负荷。
    • 5. 发明申请
    • Broadband access node with a virtual maintenance end point
    • 具有虚拟维护端点的宽带接入节点
    • US20070025256A1
    • 2007-02-01
    • US11180003
    • 2005-07-12
    • Yves HertoghsAli SajassiNorman FinnWojciech Dec
    • Yves HertoghsAli SajassiNorman FinnWojciech Dec
    • H04L12/26
    • H04L12/4633
    • A broadband access node includes a port for connection with a Digital Subscriber Line and a processor to run code that implements a virtual maintenance end point (vMEP). The vMEP translates an IEEE 802.1ag Loopback Message (LBM) received from a device on an Ethernet access network into a legacy operations and maintenance (OAM) message that is transmitted to a residential gateway (RG) device. The legacy OAM message determines a link-level connectivity status between broadband access node and the RG device. The vMEP also transmits a reply message back to the device on an Ethernet access network in compliance with the IEEE 802.1ag specification. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    • 宽带接入节点包括用于与数字用户线路连接的端口和用于运行实现虚拟维护终点(vMEP)的代码的处理器。 vMEP将从以太网接入网络上的设备接收的IEEE 802.1ag环回消息(LBM)转换为传输到住宅网关(RG)设备的传统操作和维护(OAM)消息。 传统的OAM消息确定宽带接入节点和RG设备之间的链路级连接状态。 vMEP还根据IEEE 802.1ag规范在以太网接入网络上发送回应消息给设备。 要强调的是,该摘要被提供以符合要求抽象的规则,允许搜索者或其他读者快速确定技术公开内容的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72(b)。
    • 7. 发明申请
    • DETECTING VLAN REGISTRATION PROTOCOL CAPABILITY OF A SWITCH IN A COMPUTER NETWORK
    • 检测计算机网络中的交换机的VLAN注册协议能力
    • US20140064286A1
    • 2014-03-06
    • US13596997
    • 2012-08-28
    • Sudarshana K.S.Vinutha Mohan RaoM. Radhakrishna RaoNorman Finn
    • Sudarshana K.S.Vinutha Mohan RaoM. Radhakrishna RaoNorman Finn
    • H04L12/28
    • H04L12/4679H04L12/4687H04L12/4695Y02D30/30
    • In particular embodiments, a first switch implementing a first virtual local area network (VLAN) registration protocol and connected to a first end of the trunk detects whether a second switch connected to a second end of the trunk implements the first VLAN registration protocol. In an embodiment, the second switch may send an unsolicited message to the first switch indicating the VLAN registration protocol implemented by the second switch. The first switch may then determine the VLAN registration protocol implemented by the second switch. Alternatively, the first switch may send a solicited message to the second switch. By receiving a response to the solicited message, the first switch can determine that the second switch implements the first VLAN registration protocol. In response to determining that the second switch implements the first VLAN registration protocol, the first switch may enable a pruning technique in accordance with the first VLAN registration protocol.
    • 在特定实施例中,实现第一虚拟局域网(VLAN)注册协议并连接到中继的第一端的第一交换机检测连接到中继的第二端的第二交换机是否实现第一VLAN注册协议。 在一个实施例中,第二交换机可以向第一交换机发送指示由第二交换机实现的VLAN注册协议的非请求消息。 第一交换机然后可以确定由第二交换机实现的VLAN注册协议。 或者,第一交换机可以向第二交换机发送请求消息。 通过接收对请求消息的响应,第一交换机可以确定第二交换机实现第一VLAN注册协议。 响应于确定第二交换机实现第一VLAN注册协议,第一交换机可以根据第一VLAN注册协议启用修剪技术。
    • 8. 发明申请
    • Technique for efficiently managing bandwidth registration for multiple spanning tree options
    • 用于有效管理多个生成树选项的带宽注册的技术
    • US20070263554A1
    • 2007-11-15
    • US11431428
    • 2006-05-10
    • Norman Finn
    • Norman Finn
    • H04L12/28
    • H04L12/4691H04L12/462H04L12/4641H04L45/12H04L45/48
    • A technique efficiently manages bandwidth (BW) registration for multiple spanning tree options in a computer network. According to the novel technique, an entry bridge determines multiple spanning tree paths to other bridges of the network (namely, one or more available spanning trees rooted at one or more bridges of the network) and determines a utilized (registered) BW on each of those paths. Upon receiving a request to initiate BW registration for a data flow to a destination end point, e.g., from an application source end point, the entry bridge selects one of the spanning tree paths to utilize for the data flow. Selection of the spanning tree path from among the multiple available paths may be based on (i) available bandwidth of the paths, (ii) a shortest of the paths, and (iii) a lowest bridge identifier ID for the bridge root for the path. The entry bridge sends a registration message for the data flow towards the destination end point along the selected spanning tree path. If successful, the data flow is transmitted on the selected path. If not, the entry bridge attempts to register the data flow on a next best alternate spanning tree, e.g., until a successful registration or until a determination that no further alternate spanning trees exist.
    • 技术有效地管理计算机网络中的多个生成树选项的带宽(BW)注册。 根据新颖的技术,入口桥接器确定到网络的其他网桥的多个生成树路径(即,一个或多个根据网络的一个或多个网桥的可用生成树),并确定每个 那些路径。 在接收到针对目的地端点(例如从应用源端点)的数据流发起BW注册的请求时,入口网桥选择用于数据流的生成树路径之一。 从多个可用路径中选择生成树路径可以基于(i)路径的可用带宽,(ii)最短路径,以及(iii)用于路径的桥根的最低桥标识符ID 。 入口桥沿着所选择的生成树路径向目的地端点发送数据流的注册消息。 如果成功,数据流将在所选路径上传输。 如果不是,入口桥将尝试将数据流注册在下一个最佳备用生成树上,例如,直到成功注册或直到确定不存在另外的备用生成树为止。
    • 9. 发明申请
    • System and method for generating symmetrical spanning trees
    • 用于生成对称生成树的系统和方法
    • US20070064628A1
    • 2007-03-22
    • US11228162
    • 2005-09-16
    • Francois TalletNorman Finn
    • Francois TalletNorman Finn
    • H04L12/28
    • H04L45/00H04L45/48H04L45/745
    • A system and method creates multiple, symmetric spanning trees within a network. Bridges within the network generate, send and process Spanning Tree Protocol (STP) control messages that are updated as they are propagated across the network to reflect the paths followed by the messages. The bridges, moreover, utilize the path indication value of received STP control messages to compute the spanning trees. The path indication values are preferably derived from the sum of Bridge Identifiers (IDs) corresponding to the bridges through which the STP control message has passed from the root bridge to the current bridge processing the STP control message. Each bridge also tags newly received messages with the Virtual Local Area Network (VLAN) identifier (VID) associated with the spanning tree for which the bridge is the root, thereby causing the messages to follow more optimal paths through the network.
    • 系统和方法在网络内创建多个对称的生成树。 网络中的桥接器生成,发送和处理生成树协议(STP)控制消息,这些消息在通过网络传播时更新,以反映消息所遵循的路径。 此外,桥接器利用接收到的STP控制消息的路径指示值来计算生成树。 路径指示值优选地从对应于STP控制消息已经从根桥传递到当前桥处理STP控制消息的桥的桥标识符(ID)的和中导出。 每个网桥还使用与该网桥为根的生成树相关联的虚拟局域网(VLAN)标识符(VID)来标记新接收到的消息,从而使消息跟随更多通过网络的最佳路径。
    • 10. 发明申请
    • Method and apparatus for negotiating power between power sourcing equipment and powerable devices
    • 用于协商供电设备和电源设备之间的电源的方法和装置
    • US20060177192A1
    • 2006-08-10
    • US11055512
    • 2005-02-09
    • Premkumar JonnalaNorman FinnQiang WuRuchir Dave
    • Premkumar JonnalaNorman FinnQiang WuRuchir Dave
    • G02B6/00
    • G06F1/26G06F1/28
    • The present invention provides a power negotiation protocol that enables PDs and PSEs to negotiate the amount of inline power that a PD consumes and the corresponding PSE provides. This power negotiation allows the PDs provide fine-grained power consumption level to PSEs, and the PSEs are able to manage inline power efficiently using the negotiation protocol of the present invention. The PDs can ask the PSEs for more power when needed rather than having to constantly reserve the maximum amount of power they can consume at all times. Similarly, the PDs can release reservation of excess power when their respective power requirements decrease. The PSEs can limit the amount of power that can be consumed by the PD, thereby providing the ability for an administrator to control how much power a given PD can consume.
    • 本发明提供了一种功率协商协议,其使PD和PSE能够协商PD消耗的对等功率量和相应的PSE提供的功率。 该功率协商允许PD为PSE提供细粒度的功耗级别,并且PSE能够使用本发明的协商协议有效地管理在线功率。 PD可以在需要时向PSE询问更多的功率,而不必一直保留他们可以随时消耗的最大功率。 类似地,当它们各自的功率需求降低时,PD可以释放多余功率的预留。 PSE可以限制PD可以消耗的功率量,从而提供管理员控制给定PD可以消耗多少功率的能力。