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    • 14. 发明授权
    • Weighted equal-cost multipath
    • 加权等价多路径
    • US08787400B1
    • 2014-07-22
    • US13536669
    • 2012-06-28
    • Colby BarthKireeti KompellaDavid WardJoel ObstfeldHannes GredlerJohn E. Drake
    • Colby BarthKireeti KompellaDavid WardJoel ObstfeldHannes GredlerJohn E. Drake
    • H04L12/56
    • H04L45/24H04L45/125
    • Routers balance network traffic among multiple paths through a network according to an amount of bandwidth that can be sent on an outgoing interface computed for each of the paths. For example, a router receives a link bandwidth for network links that are positioned between the first router and a second router of the network, and selects a plurality of forwarding paths from the first router to the second router. Upon determining that one of the network links is shared by multiple of the plurality of forwarding paths, the router computes a path bandwidth for each of the plurality of outgoing interfaces so as to account for splitting of link bandwidth of the shared network link across the multiple forwarding paths that share the network link. The router assigns packet flows to the forwarding paths based at least on the computed amount of bandwidth for each of the outgoing interfaces.
    • 路由器根据可以在为每个路径计算的出站接口上发送的带宽量,通过网络平衡多个路径之间的网络流量。 例如,路由器接收位于第一路由器和网络的第二路由器之间的网络链路的链路带宽,并且从第一路由器到第二路由器选择多条转发路径。 在确定所述网络链路中的一个由所述多个转发路径中的多个转发路径共享时,所述路由器计算所述多个输出接口中的每一个的路径带宽,以便考虑所述共享网络链路在所述多个转发路径中的链路带宽的分割 共享网络链路的转发路径。 路由器至少基于计算出的每个输出接口的带宽量将分组流分配给转发路径。
    • 15. 发明授权
    • Efficient implementation of 1+1 port redundancy through the use of ATM multicast
    • 通过使用ATM组播高效实现1 + 1端口冗余
    • US06895024B1
    • 2005-05-17
    • US09417038
    • 1999-10-12
    • John E. Drake, Jr.Joseph C. KantzDaniel S. NydickDimitris VarotsisJames A. Meacham, II
    • John E. Drake, Jr.Joseph C. KantzDaniel S. NydickDimitris VarotsisJames A. Meacham, II
    • H04J12/56
    • H04L12/5601H04L45/22H04L49/1553H04L2012/5627H04L2012/5642
    • A switching system. The switching system includes a first switch having a primary receive port and a secondary receive port. The switching system includes a second switch connected to the first switch. The second switch has n receive ports, where n is greater than or equal to 2 and is an integer. The second switch has m transmit ports, where m is greater than or equal to 2 and is an integer. The transmit ports are decoupled from the receive ports. The second switch has a connecting mechanism that includes a multicast mechanism which sends data out a primary transmit port of the m transmit ports to the primary receive port of the first switch to define a primary path, and out a secondary transmit port of the m transmit ports to a secondary receive port of the first switch to define a redundant path to the primary path so that if there is a failure of the primary path to provide the data to the first switch, the data is received by the first switch through the redundant path. The first switch has a mechanism for only accepting the data from the primary path unless the primary path has failed, in which case the data is received by the first switch through the redundant path. A switch. A method of switching data.
    • 交换系统 交换系统包括具有主接收端口和次接收端口的第一交换机。 交换系统包括连接到第一交换机的第二交换机。 第二个交换机有n个接收端口,其中n大于或等于2,是一个整数。 第二个交换机具有m个发送端口,其中m大于或等于2,并且是一个整数。 发送端口与接收端口分离。 第二交换机具有连接机制,其包括将m个发送端口的主要发送端口的数据发送到第一交换机的主要接收端口以定义主要路径的多播机制,以及m个发送的二次发送端口 端口到第一交换机的辅助接收端口以定义到主路径的冗余路径,使得如果主路径故障将数据提供给第一交换机,则数据由第一交换机通过冗余接收 路径。 第一交换机具有仅接受来自主路径的数据的机制,除非主路径已经发生故障,在这种情况下,第一交换机通过冗余路径接收数据。 一个开关 一种切换数据的方法。
    • 19. 发明授权
    • Path weighted equal-cost multipath
    • 路径加权等价多路径
    • US09071541B2
    • 2015-06-30
    • US13536487
    • 2012-06-28
    • Alia Karin AtlasJohn E. DrakeDavid WardRoss W. Callon
    • Alia Karin AtlasJohn E. DrakeDavid WardRoss W. Callon
    • H04L12/725H04L12/911H04L12/803H04L12/707H04L12/721
    • H04L45/24H04L45/125H04L45/302H04L45/34H04L47/125H04L47/726H04L47/822
    • Routers balance network traffic among multiple paths through a network according to an amount of bandwidth that can be sent on an outgoing interface computed for each of the paths. For example, a router receives a link bandwidth for network links that are positioned between the first router and a second router of the network, and selects a plurality of forwarding paths from the first router to the second router. Upon determining that one of the network links is shared by multiple of the plurality of forwarding paths, the router computes a path bandwidth for each of the plurality of forwarding paths so as to account for splitting of link bandwidth of the shared network link across the multiple forwarding paths that share the network link. The router assigns packet flows to the forwarding paths based at least on the computed amount of bandwidth for each of the forwarding paths.
    • 路由器根据可以在为每个路径计算的出站接口上发送的带宽量,通过网络平衡多个路径之间的网络流量。 例如,路由器接收位于第一路由器和网络的第二路由器之间的网络链路的链路带宽,并且从第一路由器到第二路由器选择多条转发路径。 在确定所述网络链路中的一个被所述多个转发路径中的多个转发路径共享时,所述路由器计算所述多个转发路径中的每一个的路径带宽,以便考虑所述多个转发路径中的共享网络链路的链路带宽的分割 共享网络链路的转发路径。 路由器至少基于计算出的每个转发路径的带宽量将分组流分配给转发路径。
    • 20. 发明授权
    • Network tunneling using a label stack delimiter
    • 使用标签栈分隔符进行网络隧道
    • US08804736B1
    • 2014-08-12
    • US13243450
    • 2011-09-23
    • John E. DrakeRahul AggarwalNitin BahadurNischal Sheth
    • John E. DrakeRahul AggarwalNitin BahadurNischal Sheth
    • H04L12/28
    • H04L12/4633H04L12/462H04L12/465
    • An ingress router of a provider network receives a packet from a customer network, determines that the packet includes a customer network label and that the packet is to be tunneled through the provider network, based on the determination, adds a delimiter label to the packet indicative of a bottom of a provider network label stack and one or more provider network labels to the packet, and forwards the packet to a next routing device along the provider network tunnel. An egress routing device of the provider network receives a packet comprising a provider network label stack, removes the provider network label stack from the packet, determines whether the packet comprises a delimiter label following the provider network label stack, and, when the packet comprises the delimiter label, forwards the packet to a customer network interface device.
    • 供应商网络的入口路由器从客户网络接收分组,基于该确定,确定分组包括客户网络标签并且分组将被穿过提供商网络,将分隔符标签添加到分组指示 提供商网络标签堆叠的底部和一个或多个提供商网络标签,并且将分组沿着提供商网络隧道转发到下一个路由设备。 提供商网络的出口路由设备接收包括提供商网络标签堆栈的分组,从分组中移除提供商网络标签栈,确定分组是否包括在提供商网络标签栈之后的分隔符标签,并且当分组包括 分隔符标签,将数据包转发到客户网络接口设备。