公开(公告)号：US10805216B2

公开(公告)日：2020-10-13

申请号：US16367868

申请日：2019-03-28

Applicant: Cisco Technology, Inc.

Inventor： Satyam Sinha ,  Smita Rai ,  Kit Chiu Chu ,  Ashutosh Agrawal ,  Wanli Wu ,  Ravikanth Nasika ,  Thomas J. Edsall ,  Geetha Anandakrishnan

IPC: H04L12/741 ,  H04L12/715 ,  H04L12/713 ,  H04L29/08 ,  H04L12/46 ,  H04L12/751

Abstract: Aspects of the embodiments include receiving a packet at a network element of a packet-switched network; identifying a presence of a shared service destination address in a header of the packet; identifying a shared service destination address for the packet based, at least in part, on a destination internet protocol (IP) address stored in a forward information base; and forwarding the packet to the shared service destination address.

公开(公告)号：US20180139124A1

公开(公告)日：2018-05-17

申请号：US15869310

申请日：2018-01-12

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha

IPC: H04L12/703 ,  H04L12/26 ,  H04L12/46 ,  H04L12/741 ,  H04L29/12 ,  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.

公开(公告)号：US20170324660A1

公开(公告)日：2017-11-09

申请号：US15145647

申请日：2016-05-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Satyam Sinha ,  Smita Rai ,  Kit Chiu Chu ,  Ashutosh Agrawal ,  Wanli Wu ,  Ravikanth Nasika ,  Thomas J. Edsall ,  Geetha Anandakrishnan

IPC: H04L12/741 ,  H04L29/08 ,  H04L12/713

CPC classification number: H04L45/745 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/04 ,  H04L45/54 ,  H04L45/586 ,  H04L45/74 ,  H04L67/10 ,  H04L67/20

Abstract: Aspects of the embodiments include receiving a packet at a network element of a packet-switched network; identifying a presence of a shared service destination address in a header of the packet; identifying a shared service destination address for the packet based, at least in part, on a destination internet protocol (IP) address stored in a forward information base; and forwarding the packet to the shared service destination address.

公开(公告)号：US09806995B2

公开(公告)日：2017-10-31

申请号：US14480482

申请日：2014-09-08

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Jeff Hill ,  Thomas J. Edsall ,  Mohammadreza Alizadeh Attar

IPC: H04L12/801 ,  H04L12/701 ,  G06F15/16 ,  H04L12/703 ,  H04L12/26 ,  H04L12/46 ,  H04L12/741 ,  H04L29/12 ,  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: The subject technology addresses the need in the art for directly measuring a maximum latency number with respect to a percentile of network traffic, which a network operator may utilize as an performance indication or metric. Given a traffic percentile, a tracking algorithm in accordance with embodiments described herein may be implemented in hardware and/or software to determine a maximum latency for this specific percentile of traffic.

公开(公告)号：US09686180B2

公开(公告)日：2017-06-20

申请号：US14477791

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: H04L12/703 ,  H04L12/26 ,  H04L12/46 ,  H04L12/741 ,  H04L29/12 ,  H04L12/751 ,  H04L29/06 ,  H04L12/58 ,  H04L29/08 ,  H04L12/707 ,  H04L12/709 ,  H04L12/723

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 managing routing information in overlay networks. A first tunnel endpoint in an overlay network may 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.

公开(公告)号：US20150124590A1

公开(公告)日：2015-05-07

申请号：US14508909

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

IPC: H04L12/703 ,  H04L12/24 ,  H04L12/931 ,  H04L12/741

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 relate to methods for detecting a link failure between the first network device and a destination node, receiving a data packet addressed to the destination node, and rewriting encapsulation information of the first data packet. Subsequent to rewriting the encapsulation information of the first data packet, the first data packet is forwarded to a second network device (e.g., using updated address information in the packet header), wherein the second network device is paired with the first network device in the virtual port channel. In certain aspects, systems and computer readable media are also provided.

Abstract translation: 本公开的方面涉及用于检测第一网络设备和目的地节点之间的链路故障的方法，接收寻址到目的地节点的数据分组以及重写第一数据分组的封装信息。 在重写第一数据分组的封装信息之后，将第一数据分组转发到第二网络设备（例如，使用分组报头中的更新的地址信息），其中第二网络设备与第一网络设备配对 虚拟端口通道。 在某些方面，还提供了系统和计算机可读介质。

公开(公告)号：US20190386905A1

公开(公告)日：2019-12-19

申请号：US16557355

申请日：2019-08-30

Applicant: Cisco Technology, Inc.

Inventor： Smita Rai ,  Ajay Modi ,  Krishna Doddapaneni ,  Kit Chiu Chu

IPC: H04L12/26

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.

公开(公告)号：US10243842B2

公开(公告)日：2019-03-26

申请号：US15795541

申请日：2017-10-27

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Jeff Hill ,  Thomas J. Edsall ,  Mohammadreza Alizadeh Attar

IPC: H04L12/18 ,  H04L12/24 ,  H04L12/26 ,  H04L12/46 ,  H04L12/58 ,  H04L29/06 ,  H04L29/08 ,  H04L29/12 ,  H04L12/703 ,  H04L12/707 ,  H04L12/709 ,  H04L12/715 ,  H04L12/723 ,  H04L12/741 ,  H04L12/743 ,  H04L12/751 ,  H04L12/753 ,  H04L12/755 ,  H04L12/803 ,  H04L12/931

Abstract: The subject technology addresses the need in the art for directly measuring a maximum latency number with respect to a percentile of network traffic, which a network operator may utilize as an performance indication or metric. Given a traffic percentile, a tracking algorithm in accordance with embodiments described herein may be implemented in hardware and/or software to determine a maximum latency for this specific percentile of traffic.

公开(公告)号：US20180139132A1

公开(公告)日：2018-05-17

申请号：US15855703

申请日：2017-12-27

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 ,  H04L12/933 ,  H04L12/721 ,  H04L12/46 ,  G06F9/455

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.

公开(公告)号：US20170250912A1

公开(公告)日：2017-08-31

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: H04L12/741 ,  H04L12/755 ,  H04L12/46

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.