公开(公告)号：US10298484B2

公开(公告)日：2019-05-21

申请号：US15159634

申请日：2016-05-19

Applicant: Cisco Technology, Inc.

Inventor： Pags Krishnamoorthy ,  Rajagopalan Janakiraman ,  Chia Alex Tsai ,  Vinay Parameswarannair

IPC: H04L12/751 ,  H04L12/721 ,  H04L12/933 ,  H04L12/715 ,  H04L29/08 ,  H04L12/775

Abstract: In one embodiment, a copy of an original packet of a traffic flow is created at an ingress leaf node of a cloud switch. The ingress leaf node forwards the original packet along a less-specific path through the cloud switch, the less-specific path based on a domain index of an egress domain for the original packet. The copy of the original packet is modified to create a more specific path learn request packet. The ingress leaf node forwards the more specific path learn request packet along the less-specific path through the cloud switch. The ingress leaf node received back a more specific path learn request reply packet that includes an indication of a fabric system port. The ingress leaf node then programs a forwarding table based on the indication of the fabric system port, to have subsequent packets of the traffic flow forwarded along a more-specific path.

公开(公告)号：US09660938B2

公开(公告)日：2017-05-23

申请号：US14557670

申请日：2014-12-02

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Shyam Kapadia ,  Nilesh Shah ,  Chia Tsai ,  Vinay Parameswarannair

IPC: H04L12/28 ,  H04L12/947 ,  H04L12/933 ,  H04L12/743 ,  H04L12/741

CPC classification number: H04L49/25 ,  H04L45/66 ,  H04L45/74 ,  H04L45/745 ,  H04L45/7453 ,  H04L49/10

Abstract: In some embodiments, a data packet may be received at a leaf switch. A port-channel associated with a destination port for the data packet may be identified, and the data packet may be transmitted to the destination port via the identified port-channel.

公开(公告)号：US20170134340A1

公开(公告)日：2017-05-11

申请号：US15411299

申请日：2017-01-20

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Pagalavan Krishnamoorthy ,  Peter Geoffrey Jones ,  Sridhar Subramanian

IPC: H04L29/12 ,  H04L12/741

CPC classification number: H04L61/2015 ,  H04L12/462 ,  H04L12/4633 ,  H04L45/745 ,  H04L61/103

Abstract: A system, computer-readable media, and methods for network resource sharing of routing and forwarding information are disclosed. The method may include receiving a first address for a device connected to a network and receiving one or more second addresses for the device. The method may also include identifying a first switch through which the device connects to the network and identifying a second switch for storing the first address and the one or more second addresses. Further, the method may include storing the first address in the first switch and storing the first address and the one or more second addresses in the second switch.

公开(公告)号：US09648005B2

公开(公告)日：2017-05-09

申请号：US15154464

申请日：2016-05-13

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Sridhar Subramanian

IPC: H04L29/06 ,  H04L29/08 ,  H04L29/12 ,  H04L12/753 ,  H04L12/707

CPC classification number: H04L63/08 ,  H04L45/24 ,  H04L45/48 ,  H04L61/103 ,  H04L61/2084 ,  H04L63/0209 ,  H04L63/10 ,  H04L63/101 ,  H04L63/107 ,  H04L67/141 ,  H04L67/18 ,  H04L67/32 ,  H04L67/327

Abstract: A method, system, and computer readable medium is disclosed which utilizes the LISP control plane to increase communications and access to enterprise resources in a network with multiple subnetworks, such as a university setting. As a result, the various embodiments of the present invention provide a routing and services dimension to enterprise discovery protocol traffic, such as Apple Bonjour traffic. A LISP instance ID, which is carried in the LISP header, is used to associate one or more end user devices with specific enterprise resources in a particular subnetwork or a service domain, wherein these resources may be accessed by the end user device even if the end user device migrates to another subnetwork. Another embodiment of the invention limits routing services advertisements from enterprise services to a subset of end user devices associated with particular user EIDs by using L2-LISP multicast techniques.

公开(公告)号：US09369473B2

公开(公告)日：2016-06-14

申请号：US14019634

申请日：2013-09-06

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Sridhar Subramanian

IPC: H04L29/06 ,  H04L29/08 ,  H04L29/12 ,  H04L12/753 ,  H04L12/707

CPC classification number: H04L63/08 ,  H04L45/24 ,  H04L45/48 ,  H04L61/103 ,  H04L61/2084 ,  H04L63/0209 ,  H04L63/10 ,  H04L63/101 ,  H04L63/107 ,  H04L67/141 ,  H04L67/18 ,  H04L67/32 ,  H04L67/327

Abstract: A method, system, and computer readable medium is disclosed which utilizes the LISP control plane to increase communications and access to enterprise resources in a network with multiple subnetworks, such as a university setting. As a result, the various embodiments of the present invention provide a routing and services dimension to enterprise discovery protocol traffic, such as Apple Bonjour traffic. A LISP instance ID, which is carried in the LISP header, is used to associate one or more end user devices with specific enterprise resources in a particular subnetwork or a service domain, wherein these resources may be accessed by the end user device even if the end user device migrates to another subnetwork. Another embodiment of the invention limits routing services advertisements from enterprise services to a subset of end user devices associated with particular user EIDs by using L2-LISP multicast techniques.

Abstract translation: 公开了一种方法，系统和计算机可读介质，其利用LISP控制平面来增加具有多个子网（例如大学设置）的网络中的企业资源的通信和访问。 因此，本发明的各种实施例为企业发现协议流量（例如Apple Bonjour业务）提供路由和服务维度。 在LISP头部中携带的LISP实例ID用于将一个或多个最终用户设备与特定子网或服务域中的特定企业资源相关联，其中这些资源可以由终端用户设备访问，即使 最终用户设备迁移到另一个子网络。 本发明的另一实施例通过使用L2-LISP多播技术将路由服务广告从企业服务限制到与特定用户EID相关联的终端用户设备的子集。

公开(公告)号：US20160134513A1

公开(公告)日：2016-05-12

申请号：US14535665

申请日：2014-11-07

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Yibin Yang ,  Liqin Dong ,  Alex Tsai ,  Rajagopalan Janakiraman

IPC: H04L12/761 ,  H04L29/08 ,  H04L12/947

CPC classification number: H04L45/16 ,  H04L49/25 ,  H04L69/325

Abstract: Coordinating gateways for multi-destination traffic across a TRILL fabric and a VXLAN/IP fabric with a plurality of TRILL IS-IS TLVs and a plurality of Layer 3 IS-IS TLVs is provided herein. The plurality of TRILL IS-IS TLVs and the plurality of Layer 3 IS-IS TLVs effectuate: grafting an IP multicast share tree with a plurality of TRILL distribution trees at only one of a plurality of gateways in a network interworking a TRILL fabric and a VXLAN/IP fabric; ensuring that multicast traffic traversing from the plurality of TRILL distribution trees is not looped back to the TRILL fabric through the VXLAN/IP fabric; restoring connectivity among a plurality of VXLAN/IP fabric partitions through the TRILL fabric if the VXLAN/IP fabric is partitioned; and restoring connectivity among a plurality of TRILL fabric partitions through the VXLAN/IP fabric if the TRILL fabric is partitioned.

Abstract translation: 本文提供了通过TRILL结构和具有多个TRILL IS-IS TLV和多个第三层IS-IS TLV的VXLAN / IP架构的多目的地业务的协调网关。 多个TRILL IS-IS TLV和多个第3层IS-IS TLV实现：在与TRILL结构互通的网络中的多个网关中的一个网关处移植具有多个TRILL分发树的IP多播共享树， VXLAN / IP fabric; 确保从多个TRILL分发树中穿过的多播流量不会通过VXLAN / IP结构循环回TRILL结构; 如果VXLAN / IP结构被分区，则通过TRILL结构恢复多个VXLAN / IP架构分区之间的连接; 并且如果分区了TRILL结构，则通过VXLAN / IP结构恢复多个TRILL结构分区之间的连接。

公开(公告)号：US20150117188A1

公开(公告)日：2015-04-30

申请号：US14582085

申请日：2014-12-23

Applicant: Cisco Technology, Inc.

Inventor： Yuchen Zhou ,  Chia Alex Tsai ,  Yibin Yang ,  Rajagopalan Janakiraman

IPC: H04L12/841 ,  H04L12/709 ,  H04L12/26 ,  H04L12/801

CPC classification number: H04L47/28 ,  H04L43/0852 ,  H04L45/245 ,  H04L47/12 ,  H04L47/30 ,  H04L47/323 ,  Y02D50/30

Abstract: In one embodiment, a period between periodic transmissions of protocol data units (PDUs) used to form or maintain a link aggregation group is initially set to a fixed value. When a stress condition is detected, the period between periodic transmissions of PDUs is increased from the initial value. When the stress condition is determined to have eased, the period between periodic transmissions of PDUs is reduced back toward the fixed value.

Abstract translation: 在一个实施例中，用于形成或维护链路聚合组的协议数据单元（PDU）的周期性传输之间的周期被初始设置为固定值。 当检测到应力条件时，PDU的周期性传输之间的周期从初始值增加。 当应力条件被确定为缓解时，PDU的周期性传输之间的时间间隔减小到固定值。

公开(公告)号：US20150074741A1

公开(公告)日：2015-03-12

申请号：US14019634

申请日：2013-09-06

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Sridhar Subramanian

IPC: H04L12/911 ,  H04L29/06

CPC classification number: H04L63/08 ,  H04L45/24 ,  H04L45/48 ,  H04L61/103 ,  H04L61/2084 ,  H04L63/0209 ,  H04L63/10 ,  H04L63/101 ,  H04L63/107 ,  H04L67/141 ,  H04L67/18 ,  H04L67/32 ,  H04L67/327

Abstract: A method, system, and computer readable medium is disclosed which utilizes the LISP control plane to increase communications and access to enterprise resources in a network with multiple subnetworks, such as a university setting. As a result, the various embodiments of the present invention provide a routing and services dimension to enterprise discovery protocol traffic, such as Apple Bonjour traffic. A LISP instance ID, which is carried in the LISP header, is used to associate one or more end user devices with specific enterprise resources in a particular subnetwork or a service domain, wherein these resources may be accessed by the end user device even if the end user device migrates to another subnetwork. Another embodiment of the invention limits routing services advertisements from enterprise services to a subset of end user devices associated with particular user EIDs by using L2-LISP multicast techniques.

Abstract translation: 公开了一种方法，系统和计算机可读介质，其利用LISP控制平面来增加具有多个子网（例如大学设置）的网络中的企业资源的通信和访问。 因此，本发明的各种实施例为企业发现协议流量（例如Apple Bonjour业务）提供路由和服务维度。 在LISP头部中携带的LISP实例ID用于将一个或多个最终用户设备与特定子网或服务域中的特定企业资源相关联，其中这些资源可以由终端用户设备访问，即使 最终用户设备迁移到另一个子网络。 本发明的另一实施例通过使用L2-LISP多播技术将路由服务广告从企业服务限制到与特定用户EID相关联的终端用户设备的子集。

公开(公告)号：US20140317249A1

公开(公告)日：2014-10-23

申请号：US13868214

申请日：2013-04-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rajagopalan Janakiraman ,  Sanjay Kumar Hooda ,  Pags Krishnamoorthy ,  Shreeram Bhide ,  Sridhar Subramanian

IPC: H04L12/931

CPC classification number: H04L49/65 ,  H04W40/24

Abstract: Accelerating network convergence may be provided. Consistent with embodiments of the disclosure, a mapping server may be configured to map an interconnection of various network elements comprising at least the following: a wireless host, at least two access switches, a plurality of distribution switches, a core switch, a mobility controller, and a mapping database. The mapping server may then receive an indication from the mobility controller that the wireless host has roamed from a first access switch to a second access switch. In response to the indication, the mapping server may remap the interconnection of network elements in the mapping database to update network routing information associated with the wireless host.

Abstract translation: 可以提供加速的网络融合。 与本公开的实施例一致，映射服务器可以被配置为映射至少包括以下的各种网络元件的互连：无线主机，至少两个接入交换机，多个分布交换机，核心交换机，移动性控制器 ，以及映射数据库。 然后，映射服务器可以从移动性控制器接收到无线主机已经从第一接入交换机漫游到第二接入交换机的指示。 响应于该指示，映射服务器可以重新映射映射数据库中的网络元件的互连，以更新与无线主机相关联的网络路由信息。

公开(公告)号：US20240333617A1

公开(公告)日：2024-10-03

申请号：US18739420

申请日：2024-06-11

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Vijay Kumar Devendran ,  Kirankumar Meda

IPC: H04L43/062 ,  G06F9/455 ,  H04L43/04 ,  H04L43/0852 ,  H04L45/02

CPC classification number: H04L43/062 ,  G06F9/45558 ,  H04L43/04 ,  H04L43/0852 ,  H04L45/02 ,  G06F2009/45595

Abstract: This disclosure describes dynamically monitoring the flow of traffic along a path that can include points across different cloud service provider networks/regions and/or different private networks. Flow monitoring may be started in response to different triggering events. For instance, flow monitoring of network traffic along one or more network paths may be started in response to performance metrics associate with an application within the multi-cloud environment, current/projected network conditions associated with one or more networks within the multi-cloud environment, and the like. In other examples, a user may specify when to perform flow monitoring for one or more network paths.