公开(公告)号：US08520508B2

公开(公告)日：2013-08-27

申请号：US12773085

申请日：2010-05-04

申请人： Vishal Zinjuvadia ,  Vikas Khetan ,  Girish Sarveiya

发明人： Vishal Zinjuvadia ,  Vikas Khetan ,  Girish Sarveiya

IPC分类号： H04L12/26

CPC分类号： H04L45/48 ,  H04L12/42 ,  H04L12/4641 ,  H04L41/06 ,  H04L41/12 ,  H04L43/0811 ,  H04L43/10 ,  H04L45/00

摘要： A plurality of network devices such as routers are included in an instance of a spanning tree. The network device creates a ring context on a port that it identifies as both a blocking port and configured to run a spanning tree protocol. The ring context can be comprised of a region name, an STP domain name or a spanning tree instance. The network device transmits a ring discover message for the ring context over a forwarding port and determines that a ring exists when it receives the message at a blocking port. The network device subsequently transmits a reverse ring discover message from its blocking port which includes the status of the discovered ring to the members of the ring topology.

摘要翻译： 在生成树的实例中包括诸如路由器的多个网络设备。 网络设备在其标识为阻塞端口并配置为运行生成树协议的端口上创建环形环境。 环形环境可以由区域名称，STP域名或生成树实例组成。 网络设备通过转发端口发送环形环的环形发现消息，并在阻塞端口接收到消息时确定环路存在。 网络设备随后从包含所发现的环的状态的阻塞端口向环形拓扑的成员发送反向环发现消息。

公开(公告)号：US20120127854A1

公开(公告)日：2012-05-24

申请号：US12952996

申请日：2010-11-23

申请人： VIKAS KHETAN ,  Hitha Shetty

发明人： VIKAS KHETAN ,  Hitha Shetty

IPC分类号： H04L12/24

CPC分类号： H04L45/00 ,  H04L12/4641 ,  H04L49/3009 ,  H04L49/354 ,  H04L49/555 ,  H04L49/557

摘要： A packet network device includes a control module, one or more line cards each one or which includes a plurality of ingress and egress ports, and each of the ingress and egress ports are connected to external network links. The line cards maintain forwarding tables and include functionality that employs information in the forwarding tables to determine how incoming packets of information should be forwarded. The control module includes functionality that operates to learn reachability information about other devices connected to the network that are and to use this reachability information to update forwarding tables maintained on the line cards. The control module also includes an enhance ARP functionality that operates in cooperation with standard ARP functionality and other network protocols included on the control module to diminish the amount of data lost in the event that a link connected to one of the egress ports fails.

摘要翻译： 分组网络设备包括控制模块，一个或多个线卡，每个线卡或包括多个入口和出口端口，并且每个入口和出口端口连接到外部网络链路。 线路卡维护转发表，并且包括在转发表中采用信息的功能，以确定如何转发信息的传入。 控制模块包括用于学习关于连接到网络的其他设备的可达性信息的功能，并且使用该可达性信息来更新线路卡上维护的转发表。 控制模块还包括增强的ARP功能，其与标准ARP功能和包括在控制模块中的其他网络协议协同工作，以减少在连接到一个出口端口的链路出现故障的情况下丢失的数据量。

公开(公告)号：US20100226260A1

公开(公告)日：2010-09-09

申请号：US12773085

申请日：2010-05-04

申请人： VIshal Zinjuvadia ,  Vikas Khetan ,  Girish Sarveiya

发明人： VIshal Zinjuvadia ,  Vikas Khetan ,  Girish Sarveiya

IPC分类号： H04L12/28 ,  H04L12/26

CPC分类号： H04L45/48 ,  H04L12/42 ,  H04L12/4641 ,  H04L41/06 ,  H04L41/12 ,  H04L43/0811 ,  H04L43/10 ,  H04L45/00

摘要： A plurality of network devices such as routers are included in an instance of a spanning tree. The network device creates a ring context on a port that it identifies as both a blocking port and configured to run a spanning tree protocol. The ring context can be comprised of a region name, an STP domain name or a spanning tree instance. The network device transmits a ring discover message for the ring context over a forwarding port and determines that a ring exists when it receives the message at a blocking port. The network device subsequently transmits a reverse ring discover message from its blocking port which includes the status of the discovered ring to the members of the ring topology.

摘要翻译： 在生成树的实例中包括诸如路由器的多个网络设备。 网络设备在其标识为阻塞端口并配置为运行生成树协议的端口上创建环形环境。 环形环境可以由区域名称，STP域名或生成树实例组成。 网络设备通过转发端口发送环形环的环形发现消息，并在阻塞端口接收到消息时确定环路存在。 网络设备随后从包含所发现的环的状态的阻塞端口向环形拓扑的成员发送反向环发现消息。

公开(公告)号：US08565069B2

公开(公告)日：2013-10-22

申请号：US12952996

申请日：2010-11-23

申请人： Vikas Khetan ,  Hitha Shetty

发明人： Vikas Khetan ,  Hitha Shetty

IPC分类号： G01R31/08

CPC分类号： H04L45/00 ,  H04L12/4641 ,  H04L49/3009 ,  H04L49/354 ,  H04L49/555 ,  H04L49/557

摘要： A packet network device includes a control module, one or more line cards each one or which includes a plurality of ingress and egress ports, and each of the ingress and egress ports are connected to external network links. The line cards maintain forwarding tables and include functionality that employs information in the forwarding tables to determine how incoming packets of information should be forwarded. The control module includes functionality that operates to learn reachability information about other devices connected to the network that are and to use this reachability information to update forwarding tables maintained on the line cards. The control module also includes an enhance ARP functionality that operates in cooperation with standard ARP functionality and other network protocols included on the control module to diminish the amount of data lost in the event that a link connected to one of the egress ports fails.

摘要翻译： 分组网络设备包括控制模块，一个或多个线卡，每个线卡或包括多个入口和出口端口，并且每个入口和出口端口连接到外部网络链路。 线路卡维护转发表，并且包括在转发表中采用信息的功能，以确定如何转发信息的传入。 控制模块包括用于学习关于连接到网络的其他设备的可达性信息的功能，并且使用该可达性信息来更新线路卡上维护的转发表。 控制模块还包括增强的ARP功能，其与标准ARP功能和包括在控制模块中的其他网络协议协同工作，以减少在连接到一个出口端口的链路出现故障的情况下丢失的数据量。