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：US20180206145A1

公开(公告)日：2018-07-19

申请号：US15855620

申请日：2017-12-27

Applicant: Cisco Technology, Inc.

Inventor： Thomas James Edsall ,  Satyam Sinha

IPC: H04W28/02 ,  H04L12/26

CPC classification number: H04W28/0231 ,  H04L43/026 ,  Y02B70/32 ,  Y02D50/30

Abstract: Disclosed herein are methods and related apparatuses for determining statistics descriptive of packets received at a particular location on a network out of a set of packets transmitted on the network, which include transmitting first and second groups of packets on the network, the packets in the first and second groups labeled with first and second labels, respectively (the packets in the second group not in the first group), incrementing first and second packet counters associated with the particular network location in response to packet(s) in the first and second groups, respectively, being received at the network location until all packets in the first and second groups have drained from the network, and using values read from the first and second packet counters to determine a statistic descriptive of the packets received at the particular network location out of those in the first and second groups transmitted on the network.

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：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：US11411770B2

公开(公告)日：2022-08-09

申请号：US16268409

申请日：2019-02-05

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 ,  H04L45/00 ,  H04L45/24 ,  H04L45/50 ,  H04L43/0852 ,  H04L43/0894 ,  H04L43/16 ,  H04L45/745 ,  H04L61/2503 ,  H04L45/02 ,  H04L69/22 ,  H04L51/00 ,  H04L67/10 ,  H04L41/0654 ,  H04L43/0811 ,  H04L45/74 ,  H04L49/00 ,  H04L61/2592 ,  H04L45/48 ,  H04L45/7453 ,  H04L45/021 ,  H04L45/64 ,  H04L47/125

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.

公开(公告)号：US10225179B2

公开(公告)日：2019-03-05

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

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.

公开(公告)号：US09716665B2

公开(公告)日：2017-07-25

申请号：US14472148

申请日：2014-08-28

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/863 ,  H04L12/937 ,  H04L29/08 ,  H04L29/12 ,  H04L29/06 ,  H04L12/413 ,  H04L12/741 ,  H04L12/947 ,  H04L12/803 ,  H04L12/743 ,  H04L12/875

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 embodiments of the present disclosure provide methods for randomly mapping entries in a suitable lookup table across multiple switch devices and/or multiple switch chipsets in each of the multiple switch devices by using two or more independent hash functions. In some embodiments, the number of entries in the lookup table is equal to be the least common multiple of all possible M (i.e., a number of switch devices) choosing R values (i.e., a desired redundancy level).

公开(公告)号：US09654385B2

公开(公告)日：2017-05-16

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

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: 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.