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    INTERNAL VIRTUAL NETWORK IDENTIFIER AND INTERNAL POLICY IDENTIFIER
    1.
    发明申请
    INTERNAL VIRTUAL NETWORK IDENTIFIER AND INTERNAL POLICY IDENTIFIER 审中-公开
    内部虚拟网络标识符和内部策略标识符

    公开(公告)号：US20110299533A1

    公开(公告)日：2011-12-08

    申请号：US13050102

    申请日：2011-03-17

    申请人： Shunjia Yu ,  Anoop Ghanwani ,  Phanidhar Koganti ,  Mythilikanth Raman ,  Rajiv Krishnamurthy ,  John Michael Terry ,  Wing Cheung ,  Joseph Juh-En Cheng ,  Surya P. Varanasi

    发明人： Shunjia Yu ,  Anoop Ghanwani ,  Phanidhar Koganti ,  Mythilikanth Raman ,  Rajiv Krishnamurthy ,  John Michael Terry ,  Wing Cheung ,  Joseph Juh-En Cheng ,  Surya P. Varanasi

    IPC分类号： H04L12/56

    CPC分类号： H04L12/4604 ,  H04L12/4625

    摘要： Systems and techniques for processing and forwarding packets are described. Some embodiments provide a system (e.g., a switch) which determines an internal virtual network identifier and/or an internal policy identifier for a packet based on a port on which the packet was received and/or one or more fields in the packet. The system can then process and forward the packet based on the internal virtual network identifier and/or internal policy identifier. In some embodiments, the system encapsulates the packet in a TRILL (Transparent Interconnection of Lots of Links) packet by adding a TRILL header to the packet. In some embodiments, the scope of an internal virtual network identifier and/or an internal policy identifier may not extend beyond a switch or a module within a switch.

    摘要翻译： 描述了处理和转发数据包的系统和技术。 一些实施例提供了一种系统（例如交换机），其基于接收到分组的端口和/或分组中的一个或多个字段来确定分组的内部虚拟网络标识符和/或内部策略标识符。 然后系统可以基于内部虚拟网络标识符和/或内部策略标识符处理和转发数据包。 在一些实施例中，通过向分组添加TRILL报头，系统将分组封装在TRILL（多个链路的透明互连）分组中。 在一些实施例中，内部虚拟网络标识符和/或内部策略标识符的范围可能不会超出交换机内的交换机或模块。

    PRESERVING QUALITY OF SERVICE ACROSS TRILL NETWORKS
    2.
    发明申请
    PRESERVING QUALITY OF SERVICE ACROSS TRILL NETWORKS 审中-公开
    保持网络服务质量

    公开(公告)号：US20110299414A1

    公开(公告)日：2011-12-08

    申请号：US13048817

    申请日：2011-03-15

    申请人： Shunjia Yu ,  Anoop Ghanwani ,  Phanidhar Koganti ,  John Michael Terry ,  Wing Cheung ,  Joseph Juh-En Cheng ,  Surya P. Varanasi

    发明人： Shunjia Yu ,  Anoop Ghanwani ,  Phanidhar Koganti ,  John Michael Terry ,  Wing Cheung ,  Joseph Juh-En Cheng ,  Surya P. Varanasi

    IPC分类号： H04L12/26

    CPC分类号： H04L47/2491 ,  H04L12/4641 ,  H04L45/00 ,  H04L45/66

    摘要： Systems and techniques for processing and/or forwarding packets are described. An ingress switch can use a QoS mapping mechanism to map a first set of Quality of Service (QoS) bits in a packet received from a customer to a second set of QoS bits for use in a Transparent Interconnection of Lots of Links (TRILL) packet which encapsulates the packet. The first set of QoS bits can be different from the second set of QoS bits. The TRILL packet can be processed and/or forwarded in the network based on the second set of QoS bits. At the egress switch, the TRILL packet can be decapsulated and the original packet with the original QoS bits (or QoS bits that are different from the original QoS bits) can be forwarded to the customer's network. In this manner, some embodiments of the present invention can preserve the QoS bits across a TRILL network.

    摘要翻译： 描述用于处理和/或转发分组的系统和技术。 入口交换机可以使用QoS映射机制来将从客户端接收的分组中的第一组服务质量（QoS）比特映射到第二组QoS比特，以用于多个链路（TRILL）分组的透明互连 它封装了数据包。 第一组QoS位可以与第二组QoS位不同。 TRILL分组可以基于第二组QoS比特在网络中被处理和/或转发。 在出口交换机上，可以对TRILL数据包进行解封装，将原始QoS位（或不同于原始QoS位的QoS位）的原始数据包转发到客户的网络。 以这种方式，本发明的一些实施例可以保持跨TRILL网络的QoS比特。

    METHOD AND SYSTEM FOR REMOTE LOAD BALANCING IN HIGH-AVAILABILITY NETWORKS
    4.
    发明申请
    METHOD AND SYSTEM FOR REMOTE LOAD BALANCING IN HIGH-AVAILABILITY NETWORKS 审中-公开
    高可用性网络远程负载均衡的方法与系统

    公开(公告)号：US20120163164A1

    公开(公告)日：2012-06-28

    申请号：US13092873

    申请日：2011-04-22

    申请人： John Michael Terry ,  Mandar Joshi ,  Phanidhar Koganti ,  Shunjia Yu ,  Anoop Ghanwani

    发明人： John Michael Terry ,  Mandar Joshi ,  Phanidhar Koganti ,  Shunjia Yu ,  Anoop Ghanwani

    IPC分类号： H04L12/56 ,  H04L12/26

    CPC分类号： H04L45/24 ,  H04L45/66 ,  H04L47/125

    摘要： A system is provided for facilitating remote load balancing in a high-availability network. During operation, the system receives a plurality of data frames destined for a destination device, wherein the destination device is coupled to a network via a trunk link, the trunk link coupling the destination device to at least two separate egress switching devices. The system then forwards the data frames via at least two data paths, each of which leads to a respective egress switching device.

    摘要翻译： 提供了一种用于促进高可用性网络中的远程负载平衡的系统。 在操作期间，系统接收去往目的地设备的多个数据帧，其中目的地设备经由中继链路耦合到网络，中继链路将目的地设备耦合到至少两个单独的出口交换设备。 然后，系统经由至少两个数据路径转发数据帧，每个数据路径通向相应的出口交换设备。

    SUPPORTING MULTIPLE MULTICAST TREES IN TRILL NETWORKS
    5.
    发明申请
    SUPPORTING MULTIPLE MULTICAST TREES IN TRILL NETWORKS 有权
    在运输网络中支持多个多播路由

    公开(公告)号：US20110299527A1

    公开(公告)日：2011-12-08

    申请号：US13030688

    申请日：2011-02-18

    申请人： Shunjia Yu ,  Nagarajan Venkatesan ,  Anoop Ghanwani ,  Phanidhar Koganti ,  Mythilikanth Raman ,  Rajiv Krishnamurthy ,  Dilip Chatwani

    发明人： Shunjia Yu ,  Nagarajan Venkatesan ,  Anoop Ghanwani ,  Phanidhar Koganti ,  Mythilikanth Raman ,  Rajiv Krishnamurthy ,  Dilip Chatwani

    IPC分类号： H04L12/56

    CPC分类号： H04L12/1886 ,  H04L47/15

    摘要： Systems and techniques for supporting multiple multicast trees are described. Some embodiments provide a system that determines an internal multicast group identifier based on a source address, a multicast address, and a multicast tree identifier field associated with a multicast packet. The system can then forward the multicast packet based on the internal multicast group identifier. Specifically, the system can determine a first set of bits based on the source address and the multicast address of the multicast packet. The system can determine a second set of bits based on the multicast tree identifier field of the multicast packet. Next, the system can combine the first set of bits and the second set of bits to obtain the internal multicast group identifier. In some embodiments, the scope of an internal virtual network identifier does not extend beyond a switch or a forwarding module within a switch.

    摘要翻译： 描述了支持多播树的系统和技术。 一些实施例提供了一种基于与多播分组相关联的源地址，多播地址和多播树标识符字段来确定内部多播组标识符的系统。 然后系统可以根据内部组播组标识符转发组播报文。 具体地，系统可以基于多播分组的源地址和多播地址来确定第一组比特。 该系统可以基于多播分组的多播树标识符字段来确定第二组比特。 接下来，系统可以组合第一组位和第二组位以获得内部多播组标识符。 在一些实施例中，内部虚拟网络标识符的范围不会超出交换机内的交换机或转发模块。

    NETWORK LAYER MULTICASTING IN TRILL NETWORKS
    6.
    发明申请
    NETWORK LAYER MULTICASTING IN TRILL NETWORKS 有权
    网络层叠在网络中的网络

    公开(公告)号：US20110299528A1

    公开(公告)日：2011-12-08

    申请号：US13030806

    申请日：2011-02-18

    申请人： Shunjia Yu ,  Anoop Ghanwani ,  Nagarajan Venkatesan ,  Rajiv Krishnamurthy ,  Phanidhar Koganti ,  Mythilikanth Raman

    发明人： Shunjia Yu ,  Anoop Ghanwani ,  Nagarajan Venkatesan ,  Rajiv Krishnamurthy ,  Phanidhar Koganti ,  Mythilikanth Raman

    IPC分类号： H04L12/56 ,  H04L12/28

    CPC分类号： H04L12/4641 ,  H04L12/1886 ,  H04L45/16 ,  H04L45/24 ,  H04L45/48 ,  H04L47/15

    摘要： Systems and techniques for performing network layer multicasting in a TRILL network are described. Some embodiments provide a system that receives multicast packet that includes a network-layer multicast-address. The multicast packet can be received on a first multicast tree associated with a first virtual network. Next, the system can determine, based on the network-layer multicast-address, a second multicast tree associated with a second virtual network over which the multicast packet is to be forwarded. The system can then forward the multicast packet on the first multicast tree associated with the first virtual network, and forward a copy of the multicast packet on the second multicast tree associated with the second virtual network.

    摘要翻译： 描述了在TRILL网络中执行网络层组播的系统和技术。 一些实施例提供接收包括网络层多播地址的多播分组的系统。 可以在与第一虚拟网络相关联的第一多播树上接收多播分组。 接下来，系统可以基于网络层组播地址来确定与要转发该组播分组的第二虚拟网络相关联的第二组播树。 然后，系统可以在与第一虚拟网络相关联的第一组播树上转发组播分组，并且在与第二虚拟网络相关联的第二组播树上转发该组播分组的副本。

    Layer-3 support in TRILL networks
    7.
    发明授权
    Layer-3 support in TRILL networks 有权
    TRILL网络中的三层支持

    公开(公告)号：US09270572B2

    公开(公告)日：2016-02-23

    申请号：US13312903

    申请日：2011-12-06

    申请人： Phanidhar Koganti ,  Anoop Ghanwani ,  Suresh Vobbilisetty ,  Rajiv Krishnamurthy ,  Nagarajan Venkatesan ,  Shunjia Yu

    发明人： Phanidhar Koganti ,  Anoop Ghanwani ,  Suresh Vobbilisetty ,  Rajiv Krishnamurthy ,  Nagarajan Venkatesan ,  Shunjia Yu

    IPC分类号： H04L12/18 ,  H04L12/751

    CPC分类号： H04L45/02 ,  H04L49/60

    摘要： One embodiment of the present invention provides a switch. The switch includes an IP header processor and a forwarding mechanism. The IP header processor identifies a destination IP address in a packet encapsulated with an inner Ethernet header, a TRILL header, and an outer Ethernet header. The forwarding mechanism determines an output port and constructs a new header for the packet based on the destination IP address. The switch also includes a packet processor which determines whether (1) an inner destination media access control (MAC) address corresponds to a local MAC address assigned to the switch; (2) a destination RBridge identifier corresponds to a local RBridge identifier assigned to the switch; and (3) an outer destination MAC address corresponds to the local MAC address.

    摘要翻译： 本发明的一个实施例提供一种开关。 交换机包括IP报头处理器和转发机制。 IP头处理器识别用内部以太网报头，TRILL报头和外部以太网报头封装的分组中的目的地IP地址。 转发机制确定输出端口，并根据目的IP地址为数据包构建一个新头。 交换机还包括分组处理器，其确定（1）内部目的地媒体访问控制（MAC）地址是否对应于分配给交换机的本地MAC地址; （2）目的地RBridge标识符对应于分配给交换机的本地RBridge标识符; 和（3）外部目的地MAC地址对应于本地MAC地址。

    FLOODING PACKETS ON A PER-VIRTUAL-NETWORK BASIS
    8.
    发明申请
    FLOODING PACKETS ON A PER-VIRTUAL-NETWORK BASIS 有权
    在虚拟网络基础上对流水线进行分组

    公开(公告)号：US20110299531A1

    公开(公告)日：2011-12-08

    申请号：US13044301

    申请日：2011-03-09

    申请人： Shunjia Yu ,  Anoop Ghanwani ,  Phanidhar Koganti ,  Dilip Chatwani

    发明人： Shunjia Yu ,  Anoop Ghanwani ,  Phanidhar Koganti ,  Dilip Chatwani

    IPC分类号： H04L12/56

    CPC分类号： H04L12/4641 ,  H04L12/4625 ,  H04L45/32 ,  H04L45/54 ,  H04L45/66 ,  H04L45/745 ,  H04L49/208 ,  H04L49/354 ,  H04L63/0272

    摘要： Methods and techniques for flooding packets on a per-virtual-network basis are described. Some embodiments provide a method (e.g., a switch) which determines an internal virtual network identifier based on one or more fields in a packet's header. Next, the method performs a forwarding lookup operation based on the internal virtual network identifier. If the forwarding lookup operation succeeds, the method can process and forward the packet accordingly. However, if the forwarding lookup operation fails, the method can determine a set of egress ports based on the internal virtual network identifier. Next, for each egress port in the set of egress ports, the method can flood the packet if a virtual network identifier in the packet's header is associated with the egress port. Flooding packets on a per-virtual-network basis can substantially reduce the amount of resources required to flood the packet when a forwarding lookup operation fails.

    摘要翻译： 描述了在每个虚拟网络基础上洪泛数据包的方法和技术。 一些实施例提供了一种基于分组头部中的一个或多个字段来确定内部虚拟网络标识符的方法（例如交换机）。 接下来，该方法基于内部虚拟网络标识符执行转发查找操作。 如果转发查找操作成功，则该方法可以相应地处理和转发报文。 然而，如果转发查找操作失败，则该方法可以基于内部虚拟网络标识符来确定一组出口端口。 接下来，对于出口端口集合中的每个出口端口，如果分组报头中的虚拟网络标识符与出口端口相关联，则该方法可以洪泛该分组。 基于虚拟网络的洪泛数据包可以在转发查找操作失败时大大减少洪泛数据包所需的资源量。