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1.发明授权公开(公告)号：US07688716B2
公开(公告)日：2010-03-30
申请号：US11120668
申请日：2005-05-02
IPC分类号： H04L12/26
CPC分类号： H04L12/437 , H04L12/1868 , H04L45/18 , H04L45/28
摘要： One embodiment in accordance with the invention is a method that includes detecting a failure in a ring network and transmitting a multicast message across the ring network that includes information regarding the failure. Additionally, a new ring master of the ring network is designated. Furthermore, a ring port coupled to the failure is blocked.
摘要翻译： 根据本发明的一个实施例是一种方法，其包括检测环网中的故障并且跨越环网发送包括关于故障的信息的多播消息。 另外，指定环形网络的新环形主机。 此外，与故障相连的环形端口被阻塞。
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2.发明申请公开(公告)号：US20060245351A1
公开(公告)日：2006-11-02
申请号：US11120668
申请日：2005-05-02
申请人： Moni Pande , Jie Jiang , Navindra Yadav , Gnanaprakasam Pandian , Pauline Shuen
发明人： Moni Pande , Jie Jiang , Navindra Yadav , Gnanaprakasam Pandian , Pauline Shuen
CPC分类号： H04L12/437 , H04L12/1868 , H04L45/18 , H04L45/28
摘要： One embodiment in accordance with the invention is a method that includes detecting a failure in a ring network and transmitting a multicast message across the ring network that includes information regarding the failure. Additionally, a new ring master of the ring network is designated. Furthermore, a ring port coupled to the failure is blocked.
摘要翻译： 根据本发明的一个实施例是一种方法，其包括检测环网中的故障并且跨越环网发送包括关于故障的信息的多播消息。 另外，指定环形网络的新环形主机。 此外，与故障相连的环形端口被阻塞。
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公开(公告)号：US07480258B1
公开(公告)日：2009-01-20
申请号：US10614257
申请日：2003-07-03
申请人： Pauline Shuen , Chinying Chaou , Mallikarjuna R. Padavala , Moni Pande , Shyamasundar S. Kaluve
发明人： Pauline Shuen , Chinying Chaou , Mallikarjuna R. Padavala , Moni Pande , Shyamasundar S. Kaluve
IPC分类号： H04L12/28
摘要： A cross stack rapid transition protocol is provided for permitting multiple network devices organized as a stack to rapidly transition their ports in response to network changes so as to minimize traffic flow disruptions while avoiding loops. Each switch in the stack has a stack port that connects the switch to another switch in the stack, and a plurality of ports for connecting the switch to other entities of the computer network. Each switch includes a Spanning Tree Protocol (STP) entity that transitions the ports of the switch among a plurality of states including a forwarding state and a blocking state. Each switch also tracks which other switches are members of the switch stack. The stack port of each switch is transitioned to the forwarding state, and a single switch having connectivity to a root is elected to be a Stack Root. One or more other switches may have Alternate Stack Root Ports, that provide alternate paths to the root. If the current Stack Root loses connectivity to the root, the switch whose Alternate Stack Root Port represents the next best path to the root issues one or more proposal messages to the other members of the switch stack. These other members respond with an Acknowledgement, and the former Stack Root transitions its port to the blocking state. Once the proposing switch receives an Acknowledgment from all other active members of the switch stack, it transitions its Alternate Stack Root Port to the forwarding state so that network messages can be forwarded to and from switch stack.
摘要翻译： 提供了一种交叉堆栈快速转换协议，用于允许组织为堆栈的多个网络设备响应于网络变化快速转换其端口，以便最大限度地减少流量中断，同时避免环路。 堆叠中的每个交换机都具有将交换机连接到堆叠中的另一个交换机的堆叠端口，以及用于将交换机连接到计算机网络的其他实体的多个端口。 每个交换机包括生成树协议（STP）实体，其在包括转发状态和阻塞状态的多个状态之间转换交换机的端口。 每个开关还跟踪哪些其他交换机是交换机堆栈的成员。 每个交换机的堆叠端口转换到转发状态，并且具有到根的连接的单个交换机被选为堆栈根。 一个或多个其他交换机可以具有备用堆叠根端口，其提供到根的备用路径。 如果当前的堆叠根路径与根的连接失败，交换机的备用堆叠根端口表示到根的下一个最佳路径会向交换机堆栈的其他成员发出一个或多个提议消息。 这些其他成员响应一个确认，并且前一个堆栈根转换其端口到阻塞状态。 一旦提议交换机从交换机堆叠的所有其他活动成员收到确认，它将其备用堆叠根端口转换为转发状态，以便网络消息可以转发到交换机堆栈。
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