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公开(公告)号：US09876715B2
公开(公告)日：2018-01-23
申请号：US14530550
申请日：2014-10-31
Applicant: Cisco Technology, Inc.
Inventor： Thomas James Edsall , Navindra Yadav , Francisco M. Matus , Kit Chiu Chu , Michael R. Smith , Sameer Merchant , Krishna Doddapaneni , Satyam Sinha
IPC: H04L12/741 , H04L12/46 , H04L12/721 , H04L12/933 , G06F9/455
CPC classification number: H04L45/74 , G06F9/45558 , G06F2009/45595 , H04L12/4633 , H04L45/66 , H04L49/10
Abstract: Disclosed herein are methods of forwarding packets on a network, such as a leaf-spine network having leaf devices and spine devices. The methods may include receiving a packet at an ingress leaf device, and determining based, at least in part, on a header of the packet whether the packet is to be transmitted to a spine device. The methods may further include ascertaining based, at least in part, on a header of the packet whether to perform encapsulation on the packet, encapsulating the packet according to a result of the ascertaining, and then transmitting the packet to a spine device according to a result of the determining. Also disclosed herein are network apparatuses which include a processor and a memory, at least one of the processor or the memory being configured to perform some or all of the foregoing described methods.
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公开(公告)号：US20170085469A1
公开(公告)日：2017-03-23
申请号：US15369696
申请日：2016-12-05
Applicant: Cisco Technology, Inc.
Inventor： Kit Chiu Chu , Thomas J. Edsall , Navindra Yadav , Francisco M. Matus , Krishna Doddapaneni , Satyam Sinha
IPC: H04L12/703 , H04L29/12 , H04L12/931 , H04L12/26 , H04L12/741 , H04L12/24
CPC classification number: H04L45/28 , H04L12/18 , H04L12/4633 , H04L12/4641 , H04L12/4645 , H04L41/0654 , H04L43/0811 , H04L43/0852 , H04L43/0894 , H04L43/16 , H04L45/02 , H04L45/021 , H04L45/22 , H04L45/24 , H04L45/245 , H04L45/48 , H04L45/50 , H04L45/64 , H04L45/74 , H04L45/745 , H04L45/7453 , H04L47/125 , H04L49/70 , H04L51/14 , H04L61/2503 , H04L61/2592 , H04L67/10 , H04L69/22 , H04L2212/00
Abstract: Aspects of the subject disclosure provide methods for avoiding a packet bounce event in a virtual port channel (VPC). A method of the technology can include steps for detecting a link failure event (e.g., between a first network device and a destination node), and receiving a data packet addressed to the destination node. In some implementations, the method can additionally include steps for rewriting encapsulation information of the first data packet. Systems and computer-readable media are also provided.
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公开(公告)号：US20150127701A1
公开(公告)日：2015-05-07
申请号：US14508779
申请日：2014-10-07
Applicant: Cisco Technology, Inc.
Inventor： Kit Chiu Chu , Thomas J. Edsall , Navindra Yadav , Francisco M. Matus , Krishna Doddapaneni , Satyam Sinha , Sameer Merchant
CPC classification number: H04L45/28 , H04L12/18 , H04L12/4633 , H04L12/4641 , H04L12/4645 , H04L41/0654 , H04L43/0811 , H04L43/0852 , H04L43/0894 , H04L43/16 , H04L45/02 , H04L45/021 , H04L45/22 , H04L45/24 , H04L45/245 , H04L45/48 , H04L45/50 , H04L45/64 , H04L45/74 , H04L45/745 , H04L45/7453 , H04L47/125 , H04L49/70 , H04L51/14 , H04L61/2503 , H04L61/2592 , H04L67/10 , H04L69/22 , H04L2212/00
Abstract: The subject technology addresses the need in the art for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology addresses the need in the art for extending multipathing to tenant multicast traffic in an IP overlay network, which enables the network to fully utilize available bandwidth for multicast traffic. In some examples, nodes in the overlay network may be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.
Abstract translation: 主题技术解决了本领域对提高组播网络环境中网络带宽利用率的需求。 更具体地，所公开的技术解决了本领域对于在IP覆盖网络中扩展多路径到租户多播业务的需要，这使得网络能够充分利用可用带宽用于多播业务。 在一些示例中，覆盖网络中的节点可以通过虚拟或逻辑链路来连接，虚拟或逻辑链路可以通过下层网络中的许多物理链路对应于路径。
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公开(公告)号：US11843531B2
公开(公告)日：2023-12-12
申请号：US17329288
申请日：2021-05-25
Applicant: Cisco Technology, Inc.
Inventor： Smita Rai , Ajay Modi , Krishna Doddapaneni , Kit Chiu Chu
IPC: H04W56/00 , H04L43/0852 , H04L43/062 , H04L43/026 , H04L43/18
CPC classification number: H04L43/0852 , H04L43/026 , H04L43/062 , H04L43/18
Abstract: Disclosed is a method for continuous in-line monitoring of data-centric traffic to guarantee application performance. The method includes, in each switch of a plurality of switches in a network fabric, grouping all packets entering each respective switch of the plurality of switches based on either 5-tuple applications or EPG based applications, collecting performance statistics at every hop in the network fabric across all flows in-line in a flow table maintained in each respective switch and periodically exporting the performance statistics to analysis module.
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公开(公告)号：US11811555B2
公开(公告)日：2023-11-07
申请号：US17327381
申请日：2021-05-21
Applicant: Cisco Technology, Inc.
Inventor： Kit Chiu Chu , Thomas J. Edsall , Navindra Yadav , Francisco M. Matus , Krishna Doddapaneni , Satyam Sinha , Sameer Merchant
IPC: H04L12/46 , H04L45/00 , H04L45/24 , H04L45/50 , H04L51/214 , H04L45/16 , H04L43/0852 , H04L43/0894 , H04L43/16 , H04L45/745 , H04L61/2503 , H04L45/02 , H04L69/22 , H04L67/10 , H04L41/0654 , H04L43/0811 , H04L45/74 , H04L49/00 , H04L61/2592 , H04L12/18 , H04L45/48 , H04L45/7453 , H04L45/021 , H04L45/64 , H04L47/125
CPC classification number: H04L12/4633 , H04L12/18 , H04L12/4641 , H04L12/4645 , H04L41/0654 , H04L43/0811 , H04L43/0852 , H04L43/0894 , H04L43/16 , H04L45/02 , H04L45/021 , H04L45/16 , H04L45/22 , H04L45/24 , H04L45/245 , H04L45/48 , H04L45/50 , H04L45/74 , H04L45/745 , H04L45/7453 , H04L49/70 , H04L51/214 , H04L61/2503 , H04L61/2592 , H04L67/10 , H04L69/22 , H04L45/64 , H04L47/125 , H04L2212/00
Abstract: The subject technology addresses a need for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology provides solutions for extending multipathing to tenant multicast traffic in an overlay network, which enables greater bandwidth utilization for multicast traffic. In some aspects, nodes in the overlay network can be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.
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Patent Agency Ranking
公开(公告)号：US11018898B2
公开(公告)日：2021-05-25
申请号：US16846091
申请日：2020-04-10
Applicant: Cisco Technology, Inc.
Inventor： Kit Chiu Chu , Thomas J. Edsall , Navindra Yadav , Francisco M. Matus , Krishna Doddapaneni , Satyam Sinha , Sameer Merchant
IPC: H04L12/46 , H04L12/707 , H04L12/709 , H04L12/723 , H04L12/26 , H04L12/741 , H04L29/12 , H04L12/751 , H04L29/06 , H04L12/58 , H04L29/08 , H04L12/24 , H04L12/931 , H04L12/18 , H04L12/753 , H04L12/743 , H04L12/755 , H04L12/715 , H04L12/803
Abstract: The subject technology addresses a need for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology provides solutions for extending multipathing to tenant multicast traffic in an overlay network, which enables greater bandwidth utilization for multicast traffic. In some aspects, nodes in the overlay network can be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.
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公开(公告)号：US10581635B2
公开(公告)日：2020-03-03
申请号：US15596613
申请日：2017-05-16
Applicant: Cisco Technology, Inc.
Inventor： Kit Chiu Chu , Thomas J. Edsall , Navindra Yadav , Francisco M. Matus , Krishna Doddapaneni , Satyam Sinha
IPC: H04L12/46 , H04L12/707 , H04L12/709 , H04L12/723 , H04L12/26 , H04L12/741 , H04L29/12 , H04L12/751 , H04L29/06 , H04L12/58 , H04L29/08 , H04L12/24 , H04L12/931 , H04L12/18 , H04L12/753 , H04L12/743 , H04L12/755 , H04L12/715 , H04L12/803
Abstract: Aspects of the subject technology relate to solutions for transporting network traffic over an overlay network. A first tunnel endpoint in an overlay network can receive an encapsulated packet from a second tunnel endpoint. The encapsulated packet may have been encapsulated at the second tunnel endpoint based on another packet originating from a source host that is associated with the second tunnel endpoint. The encapsulated packet can include a source host address for the source host and a source tunnel endpoint address for the second tunnel endpoint. The first tunnel endpoint can then update a lookup table based on an association between the source host address and the source tunnel endpoint address.
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公开(公告)号：US10142168B2
公开(公告)日：2018-11-27
申请号：US15221538
申请日：2016-07-27
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Ramanan Vaidyanathan , Ajay Modi , Azeem Suleman , Krishna Doddapaneni , Sarang Dharmapurikar , Ganlin Wu
Abstract: Systems, methods, and computer-readable media for improving debugging and troubleshooting of datacenter networks, and more particularly improving the speed of forwarding/data path related problems without going into ASIC level debugging. A switch could, for example, have a processor which communicates with an ASIC. The processor can receive flow information and a notification from the ASIC, the notification indicating a predefined error condition has been identified in a packet. The processor can modify the ASIC programming based on the notification, such that the ASIC records additional, more-detailed, flow information for the switch. The processor can then receive, from the modified ASIC, the additional flow information. The additional flow information can then be used (either by the processor or by an operator) to identify the exact reason for the errors in the flow path.
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公开(公告)号：US09876711B2
公开(公告)日：2018-01-23
申请号：US14477762
申请日：2014-09-04
Applicant: Cisco Technology, Inc.
Inventor： Kit Chiu Chu , Thomas J. Edsall , Navindra Yadav , Francisco M. Matus , Krishna Doddapaneni , Satyam Sinha
IPC: H04L12/46 , H04L12/741 , H04L29/12 , H04L12/703 , H04L12/26 , H04L12/751 , H04L29/06 , H04L12/58 , H04L29/08 , H04L12/707 , H04L12/709 , H04L12/723 , H04L12/24 , H04L12/931
CPC classification number: H04L45/28 , H04L12/18 , H04L12/4633 , H04L12/4641 , H04L12/4645 , H04L41/0654 , H04L43/0811 , H04L43/0852 , H04L43/0894 , H04L43/16 , H04L45/02 , H04L45/021 , H04L45/22 , H04L45/24 , H04L45/245 , H04L45/48 , H04L45/50 , H04L45/64 , H04L45/74 , H04L45/745 , H04L45/7453 , H04L47/125 , H04L49/70 , H04L51/14 , H04L61/2503 , H04L61/2592 , H04L67/10 , H04L69/22 , H04L2212/00
Abstract: Systems, methods, and non-transitory computer-readable storage media for translating source addresses in an overlay network. An access switch in an overlay network, such as a VXLAN, may receive an encapsulated packet from a tunnel endpoint in the overlay network. The encapsulated packet may originate from a host associated with the tunnel endpoint and be encapsulated at the tunnel endpoint with a first source tunnel endpoint address and a destination tunnel endpoint address. The access switch may replace the first source tunnel endpoint address in the encapsulated packet with a second source tunnel endpoint address of the access switch to yield a translated packet. The access switch may then transmit the translated packet towards the destination tunnel endpoint address.
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公开(公告)号：US20170214619A1
公开(公告)日：2017-07-27
申请号：US15482437
申请日：2017-04-07
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Kit Chiu Chu , Thomas J. Edsall , Navindra Yadav , Francisco M. Matus , Krishna Doddapaneni , Satyam Sinha , Sameer Merchant
IPC: H04L12/743 , H04L12/46 , H04L12/753 , H04L12/18 , H04L12/707
CPC classification number: H04L45/28 , H04L12/18 , H04L12/4633 , H04L12/4641 , H04L12/4645 , H04L41/0654 , H04L43/0811 , H04L43/0852 , H04L43/0894 , H04L43/16 , H04L45/02 , H04L45/021 , H04L45/22 , H04L45/24 , H04L45/245 , H04L45/48 , H04L45/50 , H04L45/64 , H04L45/74 , H04L45/745 , H04L45/7453 , H04L47/125 , H04L49/70 , H04L51/14 , H04L61/2503 , H04L61/2592 , H04L67/10 , H04L69/22 , H04L2212/00
Abstract: The subject technology addresses a need for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology provides solutions for extending multipathing to tenant multicast traffic in an overlay network, which enables greater bandwidth utilization for multicast traffic. In some aspects, nodes in the overlay network can be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.
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