公开(公告)号：US08842579B2

公开(公告)日：2014-09-23

申请号：US13178351

申请日：2011-07-07

申请人： Shekher Bulusu ,  Ronak Desai

发明人： Shekher Bulusu ,  Ronak Desai

IPC分类号： H04L12/28 ,  H04L12/753 ,  H04L12/46

CPC分类号： H04L12/4641 ,  H04L45/48

摘要： In one embodiment, a solution is provided wherein multiple virtual devices may be configured on the same physical port of a network device. For example, a first virtual device and a second virtual device may be configured to use the same physical port. A single internal spanning tree instance may be configured for both the first virtual device and the second virtual device.

摘要翻译： 在一个实施例中，提供了一种解决方案，其中可以在网络设备的相同物理端口上配置多个虚拟设备。 例如，第一虚拟设备和第二虚拟设备可以被配置为使用相同的物理端口。 可以为第一虚拟设备和第二虚拟设备都配置单个内部生成树实例。

公开(公告)号：US08830875B1

公开(公告)日：2014-09-09

申请号：US13160957

申请日：2011-06-15

申请人： Shekher Bulusu

发明人： Shekher Bulusu

IPC分类号： H04L12/28 ,  H04L12/52

CPC分类号： H04L45/48

摘要： An example method is provided and includes receiving a bridge protocol data unit (BPDU) on a particular link of a network. A port associated with the particular link is blocked in response to receiving the BPDU. The method also includes communicating a claim message to a spanning tree protocol (STP) root of the network; receiving, from a network element, a reply in which a grant bit is set; and changing the port associated with the particular link to a forwarding state.

摘要翻译： 提供了一种示例性方法，并且包括在网络的特定链路上接收桥协议数据单元（BPDU）。 响应于接收到BPDU，阻塞与特定链路相关联的端口。 该方法还包括将声明消息传送到网络的生成树协议（STP）根; 从网络元件接收设置了授权位的应答; 并将与特定链路相关联的端口改变为转发状态。

公开(公告)号：US08559341B2

公开(公告)日：2013-10-15

申请号：US12941881

申请日：2010-11-08

申请人： Shekher Bulusu

发明人： Shekher Bulusu

IPC分类号： H04L12/28

CPC分类号： H04L12/462 ,  H04L45/00 ,  H04L45/02 ,  H04L45/18

摘要： An example method is provided and includes executing an intermediate system to intermediate system (IS-IS) protocol for a first set of network links in a network. The method also includes executing a spanning tree protocol (STP) for a second set of network links, and generating a network topology that includes using a broadcast tree system identifier (ID) as a root bridge ID for the network. The method further includes communicating the root bridge ID to a neighboring network element. In more specific examples, an STP block is communicated to a redundant link, which connects a first switch and a second switch. The first and second switches can converge on the network topology using the broadcast tree system ID.

摘要翻译： 提供了一种示例性方法，包括对网络中的第一组网络链路执行中间系统到中间系统（IS-IS）协议。 该方法还包括为第二组网络链路执行生成树协议（STP），并且生成包括使用广播树系统标识符（ID）作为网络的根桥ID的网络拓扑。 该方法还包括将根网桥ID传送到相邻网元。 在更具体的示例中，将STP块传送到连接第一开关和第二开关的冗余链路。 第一和第二交换机可以使用广播树系统ID收敛在网络拓扑上。

公开(公告)号：US08982733B2

公开(公告)日：2015-03-17

申请号：US13041148

申请日：2011-03-04

申请人： Shekher Bulusu ,  Sanjay Sane ,  Ronak Desai

发明人： Shekher Bulusu ,  Sanjay Sane ,  Ronak Desai

IPC分类号： H04L12/28 ,  H04L12/753 ,  H04L12/751

CPC分类号： H04L45/48 ,  H04L45/02

摘要： A method is provided in one example embodiment and includes receiving a spanning tree protocol topology change notification (STP TCN) in a network; removing topology data for a first plurality of gateways associated with a first network segment ID that is shared by a particular gateway that communicated the STP TCN; and communicating an edge TCN to a second plurality of gateways associated with a second network segment ID and for which topology data has not been removed based on the STP TCN.

摘要翻译： 在一个示例实施例中提供了一种方法，并且包括在网络中接收生成树协议拓扑变化通知（STP TCN）; 去除与由传送STP TCN的特定网关共享的第一网段ID相关联的第一多个网关的拓扑数据; 以及将边缘TCN传送到与第二网段ID相关联的第二多个网关，并且基于所述STP TCN对于哪个拓扑数据尚未被去除。

公开(公告)号：US08724517B1

公开(公告)日：2014-05-13

申请号：US13152200

申请日：2011-06-02

申请人： Shekher Bulusu ,  Sanjay Sane ,  Smita Rai ,  Gayatri Ramachandran ,  Ronak Desai

发明人： Shekher Bulusu ,  Sanjay Sane ,  Smita Rai ,  Gayatri Ramachandran ,  Ronak Desai

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L45/48 ,  H04L12/4641 ,  H04L45/00 ,  H04L45/02

摘要： A method is provided that includes configuring a first network element as a peer to a second network element. The first network element and the second network element are configured to execute a spanning-tree protocol (STP) in a network environment. The method may also include configuring a priority characteristic to be a same value for the first network element and the second network element such that both operate as root network elements for other network elements in the network environment.

摘要翻译： 提供了一种方法，其包括将第一网络元件配置为与第二网络元件的对等体。 第一网元和第二网元被配置为在网络环境中执行生成树协议（STP）。 该方法还可以包括将优先级特征配置为与第一网络元件和第二网络元件相同的值，使得它们作为网络环境中的其他网络元件的根网络元件来操作。

公开(公告)号：US20120224510A1

公开(公告)日：2012-09-06

申请号：US13041148

申请日：2011-03-04

申请人： Shekher Bulusu ,  Sanjay Sane ,  Ronak Desai

发明人： Shekher Bulusu ,  Sanjay Sane ,  Ronak Desai

IPC分类号： H04L12/28

CPC分类号： H04L45/48 ,  H04L45/02

摘要： A method is provided in one example embodiment and includes receiving a spanning tree protocol topology change notification (STP TCN) in a network; removing topology data for a first plurality of gateways associated with a first network segment ID that is shared by a particular gateway that communicated the STP TCN; and communicating an edge TCN to a second plurality of gateways associated with a second network segment ID and for which topology data has not been removed based on the STP TCN.

摘要翻译： 在一个示例实施例中提供了一种方法，并且包括在网络中接收生成树协议拓扑变化通知（STP TCN）; 去除与由传送STP TCN的特定网关共享的第一网段ID相关联的第一多个网关的拓扑数据; 以及将边缘TCN传送到与第二网段ID相关联的第二多个网关，并且基于所述STP TCN对于哪个拓扑数据尚未被去除。

公开(公告)号：US20070258390A1

公开(公告)日：2007-11-08

申请号：US11416559

申请日：2006-05-03

申请人： Tameen Khan ,  Ronak Desai ,  Shekher Bulusu ,  Francois Tallet ,  Norman Finn ,  Munish Mehta

发明人： Tameen Khan ,  Ronak Desai ,  Shekher Bulusu ,  Francois Tallet ,  Norman Finn ,  Munish Mehta

IPC分类号： H04L12/28

CPC分类号： H04L12/462 ,  H04L12/467 ,  H04L45/48

摘要： A system and method runs a multiple spanning tree protocol (MSTP) in a computer network having a very large number of bridge domains. The computer network includes a plurality of intermediate network devices, each having a plurality of ports for forwarding network messages. Within each device, a plurality of bridge domains are defined, each bridge domain is identified by a Virtual Local Area Network (VLAN) Identifier (VID), and one or more device ports. For each port, a separate mapping of VIDs to Multiple Spanning Tree Instances (MSTIs), based on the bridge domains defined at the port, is established. Each mapping is converted to a port-based configuration digest, which is entered into Spanning Tree Protocol (STP) control messages sent from the respective port. Ports receiving STP control messages whose configuration digest values that match the configuration digests values computed for the ports are said to be in the same Multiple Spanning Tree region. Ports whose configuration digests differ from the configuration digests of received STP control messages are said to be in different regions.

摘要翻译： 系统和方法在具有非常大数量的网桥域的计算机网络中运行多生成树协议（MSTP）。 计算机网络包括多个中间网络设备，每个中间网络设备具有用于转发网络消息的多个端口。 在每个设备中，定义了多个桥接域，每个网桥域由虚拟局域网（VLAN）标识符（VID）和一个或多个设备端口来标识。 对于每个端口，建立基于端口定义的桥接域的VID到多生成树实例（MSTI）的单独映射。 每个映射被转换为基于端口的配置摘要，它被输入到从相应端口发送的生成树协议（STP）控制消息。 接收STP控制消息的端口的配置摘要值与配置摘要值计算的端口称为处于相同的“多生成树”区域。 其配置摘要与接收的STP控制消息的配置摘要不同的端口据说在不同的区域。

公开(公告)号：US09112724B2

公开(公告)日：2015-08-18

申请号：US12628511

申请日：2009-12-01

申请人： Shekher Bulusu ,  Francois Edouard Tallet

发明人： Shekher Bulusu ,  Francois Edouard Tallet

IPC分类号： G06F15/177 ,  H04L12/28 ,  H04L12/46 ,  H04L12/753

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

摘要： In one embodiment, a first multiple spanning tree (MST) region configuration for an MST process may be maintained at a switch in a computer network, where the first configuration has a virtual local area network (VLAN)-to-instance (VI) mapping that maps each of one or more VLANs to one of one or more MST instances in the MST region. The switch may subsequently receive a second MST region configuration that has a different VI mapping than the first configuration, and may determine one or more VLANs of the second configuration that have a different VI mapping from the first configuration (“affected VLANs”). Accordingly, in response to a trigger to apply the second configuration at the switch, the affected VLANs are blocked for a delay, and the second configuration may be applied at the switch without restarting the MST process.

摘要翻译： 在一个实施例中，可以在计算机网络中的交换机处维护用于MST进程的第一多生成树（MST）区域配置，其中第一配置具有虚拟局域网（VLAN）到实例（VI）映射 将一个或多个VLAN中的每一个映射到MST域中的一个或多个MST实例之一。 交换机可以随后接收具有与第一配置不同的VI映射的第二MST区域配置，并且可以确定具有与第一配置（“受影响的VLAN”）不同的VI映射的第二配置的一个或多个VLAN。 因此，响应于在交换机应用第二配置的触发，受影响的VLAN被阻塞延迟，并且可以在交换机处应用第二配置而不重新启动MST进程。

公开(公告)号：US20080144533A1

公开(公告)日：2008-06-19

申请号：US11612906

申请日：2006-12-19

申请人： Shekher Bulusu ,  Ronak Desai

发明人： Shekher Bulusu ,  Ronak Desai

IPC分类号： H04L12/28

CPC分类号： H04L12/4641 ,  H04L45/48

摘要： In one embodiment, a solution is provided wherein multiple virtual devices may be configured on the same physical port of a network device. For example, a first virtual device and a second virtual device may be configured to use the same physical port. A single internal spanning tree instance may be configured for both the first virtual device and the second virtual device.

摘要翻译： 在一个实施例中，提供了一种解决方案，其中可以在网络设备的相同物理端口上配置多个虚拟设备。 例如，第一虚拟设备和第二虚拟设备可以被配置为使用相同的物理端口。 可以为第一虚拟设备和第二虚拟设备都配置单个内部生成树实例。

公开(公告)号：US08565123B2

公开(公告)日：2013-10-22

申请号：US11416559

申请日：2006-05-03

申请人： Tameen Khan ,  Ronak Desai ,  Shekher Bulusu ,  Francois Edouard Tallet ,  Norman W. Finn ,  Munish Mehta

发明人： Tameen Khan ,  Ronak Desai ,  Shekher Bulusu ,  Francois Edouard Tallet ,  Norman W. Finn ,  Munish Mehta

IPC分类号： H04L12/28

CPC分类号： H04L12/462 ,  H04L12/467 ,  H04L45/48

摘要： A system and method runs a multiple spanning tree protocol (MSTP) in a computer network having a very large number of bridge domains. The computer network includes a plurality of intermediate network devices, each having a plurality of ports for forwarding network messages. Within each device, a plurality of bridge domains are defined, each bridge domain is identified by a Virtual Local Area Network (VLAN) Identifier (VID), and one or more device ports. For each port, a separate mapping of VIDs to Multiple Spanning Tree Instances (MSTIs), based on the bridge domains defined at the port, is established. Each mapping is converted to a port-based configuration digest, which is entered into Spanning Tree Protocol (STP) control messages sent from the respective port. Ports receiving STP control messages whose configuration digest values that match the configuration digests values computed for the ports are said to be in the same Multiple Spanning Tree region. Ports whose configuration digests differ from the configuration digests of received STP control messages are said to be in different regions.

摘要翻译： 系统和方法在具有非常大数量的网桥域的计算机网络中运行多生成树协议（MSTP）。 计算机网络包括多个中间网络设备，每个中间网络设备具有用于转发网络消息的多个端口。 在每个设备中，定义了多个桥接域，每个网桥域由虚拟局域网（VLAN）标识符（VID）和一个或多个设备端口来标识。 对于每个端口，建立基于端口定义的桥接域的VID到多生成树实例（MSTI）的单独映射。 每个映射被转换为基于端口的配置摘要，它被输入到从相应端口发送的生成树协议（STP）控制消息。 接收STP控制消息的端口的配置摘要值与配置摘要值计算的端口称为处于相同的“多生成树”区域。 其配置摘要与接收的STP控制消息的配置摘要不同的端口据说在不同的区域。