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    Remote port mirroring
    1.
    发明授权
    Remote port mirroring 有权
    远程端口镜像

    公开(公告)号：US09246703B2

    公开(公告)日：2016-01-26

    申请号：US13044326

    申请日：2011-03-09

    申请人： Shunjia Yu ,  Phanidhar Koganti ,  John Michael Terry ,  Dilip Chatwani

    发明人： Shunjia Yu ,  Phanidhar Koganti ,  John Michael Terry ,  Dilip Chatwani

    IPC分类号： H04L12/46

    CPC分类号： H04L49/208 ,  H04H20/93 ,  H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L12/4675 ,  H04L43/10 ,  H04L43/18

    摘要： A switch that facilitates remote port mirroring is described. The switch can include an encapsulation mechanism and a forwarding mechanism. The encapsulation mechanism can be configured to encapsulate a copy of a first packet in a second packet, thereby preserving header information (e.g., a VLAN identifier and/or a TRILL header) of the first packet. The forwarding mechanism can be configured to forward the first packet using header information of the first packet, and forward the second packet using header information of the second packet. The second packet can be received at a destination switch which extracts the first packet from the second packet, and sends the first packet on a port which is coupled to a network analyzer.

    摘要翻译： 描述了有助于远程端口镜像的交换机。 交换机可以包括封装机制和转发机制。 封装机制可以被配置为将第一分组的副本封装在第二分组中，从而保留第一分组的报头信息（例如，VLAN标识符和/或TRILL报头）。 转发机制可以被配置为使用第一分组的报头信息转发第一分组，并且使用第二分组的报头信息转发第二分组。 可以在从第二分组提取第一分组的目的地交换机处接收第二分组，并且在耦合到网络分析器的端口上发送第一分组。

    REMOTE PORT MIRRORING
    2.
    发明申请
    REMOTE PORT MIRRORING 有权
    远程端口镜像

    公开(公告)号：US20110299532A1

    公开(公告)日：2011-12-08

    申请号：US13044326

    申请日：2011-03-09

    申请人： Shunjia Yu ,  Phanidhar Koganti ,  John Michael Terry ,  Dilip Chatwani

    发明人： Shunjia Yu ,  Phanidhar Koganti ,  John Michael Terry ,  Dilip Chatwani

    IPC分类号： H04L12/56

    CPC分类号： H04L49/208 ,  H04H20/93 ,  H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L12/4675 ,  H04L43/10 ,  H04L43/18

    摘要： A switch that facilitates remote port mirroring is described. The switch can include an encapsulation mechanism and a forwarding mechanism. The encapsulation mechanism can be configured to encapsulate a copy of a first packet in a second packet, thereby preserving header information (e.g., a VLAN identifier and/or a TRILL header) of the first packet. The forwarding mechanism can be configured to forward the first packet using header information of the first packet, and forward the second packet using header information of the second packet. The second packet can be received at a destination switch which extracts the first packet from the second packet, and sends the first packet on a port which is coupled to a network analyzer.

    摘要翻译： 描述了有助于远程端口镜像的交换机。 交换机可以包括封装机制和转发机制。 封装机制可以被配置为将第一分组的副本封装在第二分组中，从而保留第一分组的报头信息（例如，VLAN标识符和/或TRILL报头）。 转发机制可以被配置为使用第一分组的报头信息转发第一分组，并且使用第二分组的报头信息转发第二分组。 可以在从第二分组提取第一分组的目的地交换机处接收第二分组，并且在耦合到网络分析器的端口上发送第一分组。

    SUPPORTING MULTIPLE MULTICAST TREES IN TRILL NETWORKS
    3.
    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。

    FLOODING PACKETS ON A PER-VIRTUAL-NETWORK BASIS
    4.
    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。

    INTERNAL VIRTUAL NETWORK IDENTIFIER AND INTERNAL POLICY IDENTIFIER
    7.
    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。

    METHOD AND SYSTEM FOR REMOTE LOAD BALANCING IN HIGH-AVAILABILITY NETWORKS
    8.
    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。

    PRESERVING QUALITY OF SERVICE ACROSS TRILL NETWORKS
    9.
    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。