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    TERNARY CONTENT ADDRESSABLE MEMORY UTILIZING COMMON MASKS AND HASH LOOKUPS
    52.
    发明申请
    TERNARY CONTENT ADDRESSABLE MEMORY UTILIZING COMMON MASKS AND HASH LOOKUPS 有权
    使用常见掩码和哈希查询的第三内容可寻址记忆

    公开(公告)号：US20150127900A1

    公开(公告)日：2015-05-07

    申请号：US14490566

    申请日：2014-09-18

    Applicant: Cisco Technology, Inc.

    Inventor： Sarang M. Dharmapurikar ,  Francisco M. Matus ,  Kit Chiu Chu ,  Georges Akis ,  Thomas J. Edsall

    IPC: G11C15/04

    CPC classification number: H04L45/7453 ,  G06F9/30018 ,  G06K15/107 ,  G11C11/4096 ,  G11C15/00 ,  G11C15/04 ,  G11C2207/002 ,  H04L45/24 ,  H04L47/125

    Abstract: A ternary content-addressable memory (TCAM) that is implemented based on other types of memory (e.g., SRAM) in conjunction with processing, including hashing functions. Such a H-TCAM may be used, for example, in implementation of routing equipment. A method of storing routing information on a network device, the routing information comprising a plurality of entries, each entry has a key value and a mask value, commences by identifying a plurality of groups, each group comprising a subset number of entries having a different common mask. The groups are identified by determining a subset number of entries that have a common mask value, meaning at least a portion of the mask value that is the same for all entries of the subset number of entries.

    Abstract translation: 基于其他类型的存储器（例如，SRAM）结合处理（包括散列函数）实现的三元内容可寻址存储器（TCAM）。 这样的H-TCAM可以用于例如路由设备的实现。 一种在网络设备上存储路由信息的方法，所述路由信息包括多个条目，每个条目具有密钥值和掩码值，通过标识多个组来开始，每个组包括具有不同的条目的子集数目 普通面具。 通过确定具有公共掩码值的条目的子集数目来识别这些组，这意味着掩码值的至少一部分对于子集数目的条目的所有条目是相同的。

    SYSTEM AND METHOD FOR IDENTIFICATION OF LARGE-DATA FLOWS
    54.
    发明申请
    SYSTEM AND METHOD FOR IDENTIFICATION OF LARGE-DATA FLOWS 有权
    用于识别大数据流的系统和方法

    公开(公告)号：US20150124825A1

    公开(公告)日：2015-05-07

    申请号：US14490596

    申请日：2014-09-18

    Applicant: Cisco Technology, Inc.

    Inventor： Sarang M. Dharmapurikar ,  Mohammadreza Alizadeh Attar ,  Kit Chiu Chu ,  Francisco M. Matus ,  Adam Hutchin ,  Janakiramanan Vaidyanathan

    IPC: H04L12/743

    CPC classification number: H04L45/7453

    Abstract: Apparatus, systems and methods may be used to monitor data flows and to select and track particularly large data flows. A method of tracking data flows and identifying large-data (“elephant”) flows comprises extracting fields from a packet of data to construct a flow key, computing a hash value on the flow key to provide a hashed flow signature, entering and/or comparing the hashed flow signature with entries in a flow hash table. Each hash table entry includes a byte count for a respective flow. When the byte count for a flow exceeds a threshold value, the flow is added to a large-data flow (“elephant”) table and the flow is then tracked in the large-data flow table.

    Abstract translation: 装置，系统和方法可用于监视数据流并选择和跟踪特别大的数据流。 跟踪数据流和识别大数据（“大象”）流的方法包括从数据包中提取字段以构建流密钥，在流密钥上计算散列值以提供散列流签名，输入和/或 将散列流签名与流哈希表中的条目进行比较。 每个散列表条目包括相应流的字节计数。 当流量的字节数超过阈值时，将流量添加到大数据流（“大象”）表，然后在大数据流表中跟踪流。

    POLICY ENFORCEMENT PROXY
    55.
    发明申请
    POLICY ENFORCEMENT PROXY 有权
    政策执行情况

    公开(公告)号：US20150124809A1

    公开(公告)日：2015-05-07

    申请号：US14532787

    申请日：2014-11-04

    Applicant: Cisco Technology, Inc.

    Inventor： Thomas J. Edsall ,  Navindra Yadav ,  Kit Chiu Chu

    IPC: H04L12/813 ,  H04L12/761 ,  H04L12/46 ,  H04L12/833 ,  H04L12/18

    CPC classification number: H04L47/20 ,  H04L12/4645 ,  H04L41/0893 ,  H04L45/74 ,  H04L45/7457 ,  H04L47/32 ,  H04L47/62 ,  H04L63/10 ,  H04L63/164 ,  H04L63/20

    Abstract: Systems, methods, and non-transitory computer-readable storage media for implementing a policy enforcement proxy are disclosed. A data packet associated with a source endpoint group and a destination endpoint group is received at a network device. The network device performs a policy lookup based on the source endpoint group and the destination endpoint group. The network device determines that the policy is not available and in response, modifies the data packet and forwards it to a policy enforcement proxy.

    Abstract translation: 公开了用于实施策略执行代理的系统，方法和非暂时的计算机可读存储介质。 在网络设备处接收与源端点组和目的端点组相关联的数据分组。 网络设备根据源端点组和目标端点组执行策略查找。 网络设备确定策略不可用，作为响应，修改数据包并将其转发到策略执行代理。

    METHOD FOR SCALING ADDRESS LOOKUPS USING SYNTHETIC ADDRESSES
    56.
    发明申请
    METHOD FOR SCALING ADDRESS LOOKUPS USING SYNTHETIC ADDRESSES 有权
    使用合成地址缩放地址查询的方法

    公开(公告)号：US20150124805A1

    公开(公告)日：2015-05-07

    申请号：US14475349

    申请日：2014-09-02

    Applicant: Cisco Technology, Inc.

    Inventor： Navindra Yadav ,  Satyam Sinha ,  Thomas J. Edsall ,  Mohammadreza Alizadeh Attar ,  Kit Chiu Chu

    IPC: H04L29/12 ,  H04L29/06 ,  H04L12/741

    CPC classification number: H04L47/50 ,  H04L45/74 ,  H04L45/7453 ,  H04L47/125 ,  H04L47/56 ,  H04L49/25 ,  H04L49/254 ,  H04L61/103 ,  H04L61/2084 ,  H04L61/6004 ,  H04L61/6095 ,  H04L67/22 ,  H04L67/322 ,  H04L69/167 ,  H04L69/22

    Abstract: Various examples of the present disclosure provide methods for unifying various types of end-point identifiers, such as IPv4 (e.g., Internet protocol version 4 represented by a VRF and an IPv4 address), IPv6 (e.g., Internet protocol version 6 represented by a VRF and an IPv6 address) and L2 (e.g., Layer-2 represented by a bridge domain (BD) and a media access control (MAC) address), by mapping end-point identifiers to a uniform space (e.g., a synthetic IPv4 address and a synthetic VRF) and allowing different forms of lookups to be uniformly handled. In some examples, a lookup database residing on a switch device can be sharded into a plurality of lookup table subsets, each of which resides on a different one of multiple switch chipsets (e.g., Tridents) in the switch device.

    Abstract translation: 本公开的各种示例提供了用于统一各种端点标识符（例如，由VRF和IPv4地址表示的因特网协议版本4），IPv6（例如，由VRF表示的因特网协议版本6）的各种端点标识符的方法 和IPv6地址）和L2（例如，由桥接域（BD）和媒体访问控制（MAC）地址表示的层2），通过将端点标识符映射到统一的空间（例如，合成IPv4地址和 合成VRF），并允许不同形式的查找被统一处理。 在一些示例中，驻留在交换机设备上的查找数据库可以划分成多个查找表子集，每个查找表子集驻留在交换设备中的多个交换芯片组（例如Trident）中的不同的一个。

    WEIGHTED EQUAL COST MULTIPATH ROUTING
    57.
    发明申请
    WEIGHTED EQUAL COST MULTIPATH ROUTING 有权
    加权平均成本多路径路由

    公开(公告)号：US20150124652A1

    公开(公告)日：2015-05-07

    申请号：US14450106

    申请日：2014-08-01

    Applicant: Cisco Technology, Inc.

    Inventor： Sarang Dharmapurikar ,  Mohammadreza Alizadeh Attar ,  Navindra Yadav ,  Ramanan Vaidyanathan ,  Kit Chiu Chu

    IPC: H04L12/733 ,  H04L12/751 ,  H04L12/801

    CPC classification number: H04L45/7453 ,  G06F9/30018 ,  G06K15/107 ,  G11C11/4096 ,  G11C15/00 ,  G11C15/04 ,  G11C2207/002 ,  H04L45/24 ,  H04L47/125

    Abstract: In some implementations, network traffic can be routed along equal cost paths based on weights assigned to each path. For example, weighted equal cost multipath routing can be implemented by assigning weights to each equal cost path (e.g., uplink, next hop node) to a destination device. When the network device receives a packet, the network device can generate a key (e.g., a random value, a hash value based on packet data, a value between 0 and n, etc.). The key can be used to select an uplink or path upon which to forward the packet. A key can be generated for a packet flow or flowlet. Each flow can be associated with the same key so that each packet in a flow will be forwarded along the same path. Each flowlet can be forwarded along a different uplink.

    Abstract translation: 在一些实现中，基于分配给每个路径的权重，网络流量可以沿着相等的成本路径路由。 例如，可以通过向目标设备分配权重给每个相等成本路径（例如，上行链路，下一跳节点）来实现加权等成本多径路由。 当网络设备接收到分组时，网络设备可以生成密钥（例如，随机值，基于分组数据的哈希值，0和n之间的值等）。 密钥可以用于选择转发数据包的上行链路或路径。 可以为分组流或小流生成密钥。 每个流可以与相同的密钥相关联，使得流中的每个分组将沿着相同的路径被转发。 每条流都可以沿不同的上行链路转发。

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