公开(公告)号：US20070183313A1

公开(公告)日：2007-08-09

申请号：US11350231

申请日：2006-02-08

申请人： Manoj Narayanan ,  Hemant Hebbar ,  Vinayakumar Parameswarannair ,  Eden Tan ,  Michael Smith ,  Norman Finn

发明人： Manoj Narayanan ,  Hemant Hebbar ,  Vinayakumar Parameswarannair ,  Eden Tan ,  Michael Smith ,  Norman Finn

IPC分类号： H04J1/16

CPC分类号： H04L49/557 ,  H04L49/357 ,  H04L49/552 ,  H04L49/70

摘要： A system and method detects and responds to failures occurring in a virtual switch. The virtual switch is formed from two or more physical switches interconnected by a Virtual Switch Link (VSL). One physical switch is elected the Master, and it executes a link aggregation protocol for the virtual switch. If the VSL fails, one of the other physical switches assumes that it should become the Master for the virtual switch, and it begins executing the link aggregation protocol. By adding information unique to the physical switches in the control packets of the link aggregation protocol, remote switches can identify when the VSL fails, and report this condition to the original Master. In response, the original Master or the new Master takes corrective action.

摘要翻译： 系统和方法检测并响应虚拟交换机中发生的故障。 虚拟交换机由两个或多个通过虚拟交换机链路（VSL）互连的物理交换机构成。 一个物理交换机被选举为Master，并为虚拟交换机执行链路聚合协议。 如果VSL发生故障，则其他物理交换机之一假定应成为虚拟交换机的Master，并开始执行链路聚合协议。 通过在链路聚合协议的控制报文中添加物理交换机唯一的信息，远程交换机可以识别VSL何时发生故障，并将该条件报告给原始Master。 作为回应，原硕士或新校长采取纠正措施。

公开(公告)号：US20060146832A1

公开(公告)日：2006-07-06

申请号：US11029708

申请日：2005-01-05

申请人： Sanjeev Rampal ,  Jimmy Ervin ,  Norman Finn ,  Michael Smith

发明人： Sanjeev Rampal ,  Jimmy Ervin ,  Norman Finn ,  Michael Smith

IPC分类号： H04L12/56

CPC分类号： H04L12/46

摘要： A method for data communication across a layer 2 bridged network having two or more edge nodes configured for receiving and transmitting multiprotocol data packets. The method includes creating a pseudowire circuit across the bridged network, receiving data packets at one of the edge nodes, encapsulating data packets into pseudowire frames, encapsulating the pseudowire frames inside MAC frames, and transmitting the encapsulated frames over the carrier bridged network.

摘要翻译： 一种用于跨第二层桥接网络进行数据通信的方法，该网络具有被配置用于接收和发送多协议数据分组的两个或多个边缘节点。 该方法包括跨越桥接网络创建伪线电路，在边缘节点之一处接收数据分组，将数据分组封装成伪线帧，将伪线帧封装在MAC帧内，以及通过载波桥接网络传输封装帧。

公开(公告)号：US07782841B2

公开(公告)日：2010-08-24

申请号：US11029708

申请日：2005-01-05

申请人： Sanjeev Rampal ,  Jimmy Ervin ,  Norman Finn ,  Michael Smith

发明人： Sanjeev Rampal ,  Jimmy Ervin ,  Norman Finn ,  Michael Smith

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04J3/24

CPC分类号： H04L12/46

摘要： A method for data communication across a layer 2 bridged network having two or more edge nodes configured for receiving and transmitting multiprotocol data packets. The method includes creating a pseudowire circuit across the bridged network, receiving data packets at one of the edge nodes, encapsulating data packets into pseudowire frames, encapsulating the pseudowire frames inside MAC frames, and transmitting the encapsulated frames over the carrier bridged network.

摘要翻译： 一种用于跨第二层桥接网络进行数据通信的方法，该网络具有被配置用于接收和发送多协议数据分组的两个或多个边缘节点。 该方法包括跨越桥接网络创建伪线电路，在边缘节点之一处接收数据分组，将数据分组封装成伪线帧，将伪线帧封装在MAC帧内，以及通过载波桥接网络传输封装帧。

公开(公告)号：US20060112431A1

公开(公告)日：2006-05-25

申请号：US10996101

申请日：2004-11-23

申请人： Norman Finn ,  Michael Smith

发明人： Norman Finn ,  Michael Smith

IPC分类号： G06F12/14

CPC分类号： H04L63/08 ,  H04L63/104

摘要： A method and apparatus for including network security information in a frame is disclosed. Network security information is included in a secure portion of overhead of a frame. The network security information is configured to facilitate network security. A network device configured to process a frame is also disclosed. The frame includes frame security information and network security information. The frame security information is configured to facilitate securing a portion of overhead of the frame, and the network security information is located in the secure portion of the overhead of the frame and is configured to facilitate network security.

公开(公告)号：US20140064286A1

公开(公告)日：2014-03-06

申请号：US13596997

申请日：2012-08-28

申请人： Sudarshana K.S. ,  Vinutha Mohan Rao ,  M. Radhakrishna Rao ,  Norman Finn

发明人： Sudarshana K.S. ,  Vinutha Mohan Rao ,  M. Radhakrishna Rao ,  Norman Finn

IPC分类号： H04L12/28

CPC分类号： H04L12/4679 ,  H04L12/4687 ,  H04L12/4695 ,  Y02D30/30

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20070263554A1

公开(公告)日：2007-11-15

申请号：US11431428

申请日：2006-05-10

申请人： Norman Finn

发明人： Norman Finn

IPC分类号： H04L12/28

CPC分类号： H04L12/4691 ,  H04L12/462 ,  H04L12/4641 ,  H04L45/12 ,  H04L45/48

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20070064628A1

公开(公告)日：2007-03-22

申请号：US11228162

申请日：2005-09-16

申请人： Francois Tallet ,  Norman Finn

发明人： Francois Tallet ,  Norman Finn

IPC分类号： H04L12/28

CPC分类号： H04L45/00 ,  H04L45/48 ,  H04L45/745

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20060177192A1

公开(公告)日：2006-08-10

申请号：US11055512

申请日：2005-02-09

申请人： Premkumar Jonnala ,  Norman Finn ,  Qiang Wu ,  Ruchir Dave

发明人： Premkumar Jonnala ,  Norman Finn ,  Qiang Wu ,  Ruchir Dave

IPC分类号： G02B6/00

CPC分类号： G06F1/26 ,  G06F1/28

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08681641B1

公开(公告)日：2014-03-25

申请号：US12146345

申请日：2008-06-25

申请人： Ali Sajassi ,  Norman Finn ,  Francois Tallet

发明人： Ali Sajassi ,  Norman Finn ,  Francois Tallet

IPC分类号： H04J1/16 ,  H04L12/28 ,  H04L12/56 ,  H04J3/14 ,  H04L1/00

CPC分类号： H04L45/745 ,  H04L1/00 ,  H04L12/462 ,  H04L12/4641 ,  H04L45/18

摘要： A technique is provided for mitigating loops in Ethernet networks. A first port in an Ethernet device receives an Ethernet frame. The frame includes a source identifier, a destination identifier, and a Virtual Local Area Network Identifier (VLAN ID). According to various embodiments, the VLAN ID (VID) has the encoding of both a community group as well as a source bridge ID. A VID database is accessed using the destination identifier and the VID to determine whether the first port has ingress enabled. A filtering database is accessed to determine an egress port for forwarding the Ethernet frame.

摘要翻译： 提供了一种减轻以太网网络环路的技术。 以太网设备中的第一个端口接收以太网帧。 该帧包括源标识符，目的地标识符和虚拟局域网标识符（VLAN ID）。 根据各种实施例，VLAN ID（VID）具有社区组以及源网桥ID的编码。 使用目标标识符和VID访问VID数据库，以确定第一个端口是否启用了入口。 访问过滤数据库以确定用于转发以太网帧的出口端口。

公开(公告)号：US07889681B2

公开(公告)日：2011-02-15

申请号：US11182564

申请日：2005-07-14

申请人： Norman Finn

发明人： Norman Finn

IPC分类号： H04L12/28

CPC分类号： H04L12/462 ,  H04L12/4633 ,  H04L12/4645 ,  H04L45/00 ,  H04L45/16 ,  H04L45/48

摘要： 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.

摘要翻译： 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。