公开(公告)号：US20220376973A1

公开(公告)日：2022-11-24

申请号：US17817199

申请日：2022-08-03

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Suran Saminda de Silva ,  Shyam Kapadia ,  Nilesh Shah

IPC: H04L41/0806 ,  H04L49/15 ,  H04L41/084

Abstract: A method is provided in one example embodiment and includes creating a segment organization, which includes a configuration profile. The method also includes attaching the configuration profile to a server in the segment organization. The method further includes sending the attached configuration profile to a database in a physical network.

公开(公告)号：US09565105B2

公开(公告)日：2017-02-07

申请号：US14018134

申请日：2013-09-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Shyam Kapadia ,  Puto H. Subagio ,  Yibin Yang ,  Nilesh Shah ,  Vipin Jain ,  Ashutosh Agrawal

IPC: H04L12/741 ,  H04L12/56

CPC classification number: H04L45/745 ,  H04L45/741

Abstract: An example method for implementation of virtual extensible local area network (VXLAN) in top-of-rack (ToR) switches in a network environment is provided and includes receiving a packet encapsulated with a VXLAN header having an unknown virtual tunnel endpoint (VTEP) Internet Protocol (IP) address in a network environment, and installing an entry at an index location of a forwarding table. The index location includes an encoding of the VTEP-IP address as a VTEP index (VTEP-IDX), and the entry maps a VXLAN interface to an IP address associated with a VXLAN network identifier (VNI). In specific embodiments, the VTEP-IDX is log N bits, where N is a size of the forwarding table. The forwarding table indicates a destination VTEP IP address when encapsulating the packet, and the source VTEP IP address when decapsulating the packet.

Abstract translation: 提供了一种用于在网络环境中在机架（ToR）交换机中实现虚拟可扩展局域网（VXLAN）的示例性方法，包括接收使用具有未知虚拟隧道端点（VTEP）Internet的VXLAN头封装的分组 网络环境中的协议（IP）地址，以及在转发表的索引位置安装条目。 索引位置包括作为VTEP索引（VTEP-IDX）的VTEP-IP地址的编码，并且该条目将VXLAN接口映射到与VXLAN网络标识符（VNI）相关联的IP地址。 在具体实施例中，VTEP-IDX是日志N比特，其中N是转发表的大小。 转发表在封装数据包时指示目标VTEP IP地址，解封装数据包时的源VTEP IP地址。

公开(公告)号：US09548917B2

公开(公告)日：2017-01-17

申请号：US13868590

申请日：2013-04-23

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Vijay Gopal Krishnan ,  Raghava Kodigenahalli Sivaramu ,  Dhananjaya Rao

IPC: H04L12/28 ,  H04L12/56 ,  H04L12/761 ,  H04L12/931 ,  H04L12/46 ,  H04L12/18

CPC classification number: H04L45/16 ,  H04L12/1886 ,  H04L12/4645 ,  H04L49/354

Abstract: In a mesh-based connected data center network architecture, a mechanism is provided to allow efficient delivery of IP multicast frames within the network. Described approaches avoid replication into VLANs (or SVIs) across the fabric by using the outer encapsulated tree to identify trees on which to replicate the traffic. Replication may be performed at the furthest point from the source (via routing or bridging). Also, multicast traffic may be distributed to dually connected (vPC) hosts on links from various network devices.

Abstract translation: 在基于网格的连接的数据中心网络架构中，提供了一种机制，以允许网络内的IP组播帧的有效传递。 描述的方法避免通过使用外部封装的树来标识在其上复制流量的树来跨结构复制到VLAN（或SVI）中。 复制可以在距离源的最远点（通过路由或桥接）来执行。 此外，组播流量可以在来自各种网络设备的链路上分发到双向连接（vPC）主机。

公开(公告)号：US09531643B2

公开(公告)日：2016-12-27

申请号：US14877026

申请日：2015-10-07

Applicant: Cisco Technology, Inc.

Inventor： Pei-Chun Cheng ,  Shyam Kapadia ,  Nilesh Shah ,  Vipin Jain

IPC: H04L12/931 ,  G06F9/455 ,  H04L12/46 ,  H04L12/24

CPC classification number: H04L49/354 ,  G06F9/455 ,  H04L12/4641 ,  H04L41/0806 ,  H04L49/70

Abstract: Techniques are provided for provisioning network resources for virtual machines. At a first switch device, a configuration request message is received from a virtual switch to provision virtual network segmentation resources for a virtual machine managed by the virtual switch. The first switch device provisions the virtual network segmentation resources for the virtual machine. The first switch devices sends to a second switch device a first synchronization message that includes information describing the virtual network segmentation resources. The second switch device is a peer of the first switch device. The first switch device also sends to the second switch device a second synchronization message that includes state information indicating that the first switch device is in an active state for servicing the virtual machine and that the second switch device is to be placed in a dormant state for servicing the virtual machine.

公开(公告)号：US09197553B2

公开(公告)日：2015-11-24

申请号：US13853128

申请日：2013-03-29

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Ashutosh Agrawal ,  Parag Bhide ,  Mahidas Prabhanjan

IPC: H04L12/713 ,  H04L12/773 ,  H04L29/12

CPC classification number: H04L61/103 ,  H04L45/586 ,  H04L45/60

Abstract: Techniques are presented herein for distributing address information of host devices in a network. At a first router device, a packet is received from a first host device that is destined for a second host device. The first host device is dually-connected to the first router and a second router device. The second router device is part of a virtual port channel pair with the first router device. A message is sent to the second router device, the message indicating that the first host device is connected to the second router device. The packet is encapsulated with an overlay header and is sent to a third router device that is connected to the second host device. The encapsulated packet contains a Layer 2 address associated with the first host device and a Layer 3 address associated with the first host device.

Abstract translation: 这里介绍了在网络中分配主机设备的地址信息的技术。 在第一路由器设备处，从第一主机设备接收目的地为第二主机设备的分组。 第一主机设备被双连接到第一路由器和第二路由器设备。 第二路由器设备是与第一路由器设备的虚拟端口信道对的一部分。 向第二路由器设备发送消息，指示第一主机设备连接到第二路由器设备的消息。 该分组被封装为覆盖头，并被发送到连接到第二主机设备的第三路由器设备。 封装的分组包含与第一主机设备相关联的第二层地址和与第一主机设备相关联的第三层地址。

公开(公告)号：US09083613B2

公开(公告)日：2015-07-14

申请号：US13653129

申请日：2012-10-16

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Vipin Jain ,  Govind Prasad Sharma ,  Dhananjaya Rao ,  Herman Levenson

IPC: H04L12/26 ,  H04L12/24

CPC classification number: H04L43/0811 ,  H04L41/12 ,  H04L43/10 ,  Y02D30/30

Abstract: In one embodiment, a method at a network device includes receiving a link layer advertisement, comparing information in the link layer advertisement with connectivity information stored at the network device, and based on the comparison, determining if there is a cabling error between the network device and a link peer transmitting the link layer advertisement. An apparatus and logic are also disclosed herein.

Abstract translation: 在一个实施例中，网络设备的方法包括接收链路层通告，将链路层广告中的信息与存储在网络设备中的连接性信息进行比较，并且基于该比较，确定网络设备之间是否存在布线错误 以及发送链路层广告的链路对等体。 本文还公开了一种装置和逻辑。

公开(公告)号：US20150172156A1

公开(公告)日：2015-06-18

申请号：US14132269

申请日：2013-12-18

Applicant: Cisco Technology, Inc.

Inventor： Anil K. Lohiya ,  Vipin Jain ,  Dhananjaya Rao ,  Anand Parthasarathy

IPC: H04L12/26 ,  H04L29/12

CPC classification number: H04L61/103 ,  H04L61/2069 ,  H04L61/2503 ,  H04L61/6068

Abstract: A method of one example embodiment includes receiving at a first network element a packet from a host local to the first network element destined for a remote host; determining that a subnet of the remote host is not instantiated on the first network element; originating a discovery request to discover the remote host, wherein the discovery request is originated in a Virtual Routing Forwarding instance (“VRF”) and identifies the subnet to which the remote host belongs; and broadcasting the discovery request to network elements comprising the VRF. The method may further include, upon receipt of the discovery request, determining whether the identified subnet is configured locally on the second network element and if not, dropping the discovery request; otherwise, rewriting the discovery request to include to an anycast IP address of the remote host's subnet and forwarding the rewritten request.

Abstract translation: 一个示例性实施例的方法包括在第一网络元件处接收来自本地到主机到远程主机的第一网络元件的主机的分组; 确定所述远程主机的子网不在所述第一网络元件上被实例化; 发起发现请求以发现远程主机，其中发现请求起始于虚拟路由转发实例（“VRF”），并且识别远程主机所属的子网; 并将发现请求广播到包括VRF的网络元件。 所述方法还可以包括：在接收到所述发现请求时，确定所识别的子网是否被配置在所述第二网元上的本地，如果不是，则丢弃所述发现请求; 否则，重写发现请求以包括在远程主机的子网的任播IP地址并转发重写的请求。

公开(公告)号：US20150163192A1

公开(公告)日：2015-06-11

申请号：US14097747

申请日：2013-12-05

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Anil Lohiya ,  Dhananjaya Rao

IPC: H04L29/12

CPC classification number: H04L61/2046 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L41/044 ,  H04L41/0659 ,  H04L43/04 ,  H04L43/0823 ,  H04L43/16 ,  H04L49/70 ,  H04L61/103 ,  H04L61/20 ,  H04L61/2007 ,  H04L61/2092 ,  H04L67/10

Abstract: Presented herein are techniques to detect a misconfigured duplicate Internet Protocol (IP) address in a distributed data center network fabric. A network topology is provided that includes a plurality of network elements. A network element receives a configuration message comprising an IP address from a first host associated with the first network element. The IP address is detected to already be in use by a second host associated with a second network element. A request message is provided to the second network element, the request message configured to cause the second network element to attempt to contact the second host. A reply message is received from the second network element. If the reply message indicates that the second host exists at the second network element, an indication of a misconfiguration event is generated. Otherwise, the IP address is associated with the first host.

Abstract translation: 这里提出的是在分布式数据中心网络结构中检测错误配置的重复的因特网协议（IP）地址的技术。 提供了包括多个网络元件的网络拓扑。 网络元件从与第一网络元件相关联的第一主机接收包括IP地址的配置消息。 检测到IP地址已经被与第二网络元件相关联的第二主机使用。 向第二网络元件提供请求消息，该请求消息被配置为使得第二网络元件尝试接触第二主机。 从第二网络元件接收回复消息。 如果回复消息指示第二主机存在于第二网元，则生成错误配置事件的指示。 否则，IP地址与第一个主机相关联。

公开(公告)号：US20140314079A1

公开(公告)日：2014-10-23

申请号：US13868590

申请日：2013-04-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Vipin Jain ,  Vijay Gopal Krishnan ,  Raghava Kodigenahalli Sivaramu ,  Dhananjaya Rao

IPC: H04L12/761 ,  H04L12/931

CPC classification number: H04L45/16 ,  H04L12/1886 ,  H04L12/4645 ,  H04L49/354

Abstract: In a mesh-based connected data center network architecture, a mechanism is provided to allow efficient delivery of IP multicast frames within the network. Described approaches avoid replication into VLANs (or SVIs) across the fabric by using the outer encapsulated tree to identify trees on which to replicate the traffic. Replication may be performed at the furthest point from the source (via routing or bridging). Also, multicast traffic may be distributed to dually connected (vPC) hosts on links from various network devices.

Abstract translation: 在基于网格的连接的数据中心网络架构中，提供了一种机制，以允许网络内的IP组播帧的有效传递。 描述的方法避免通过使用外部封装的树来标识在其上复制流量的树来跨结构复制到VLAN（或SVI）中。 复制可以在距离源的最远点（通过路由或桥接）来执行。 此外，组播流量可以在来自各种网络设备的链路上分发到双向连接（vPC）主机。

公开(公告)号：US20140294005A1

公开(公告)日：2014-10-02

申请号：US13853128

申请日：2013-03-29

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Vipin Jain ,  Ashutosh Agrawal ,  Parag Bhide ,  Mahidas Prabhanjan

IPC: H04L12/713

CPC classification number: H04L61/103 ,  H04L45/586 ,  H04L45/60

Abstract: Techniques are presented herein for distributing address information of host devices in a network. At a first router device, a packet is received from a first host device that is destined for a second host device. The first host device is dually-connected to the first router and a second router device. The second router device is part of a virtual port channel pair with the first router device. A message is sent to the second router device, the message indicating that the first host device is connected to the second router device. The packet is encapsulated with an overlay header and is sent to a third router device that is connected to the second host device. The encapsulated packet contains a Layer 2 address associated with the first host device and a Layer 3 address associated with the first host device.

Abstract translation: 这里介绍了在网络中分配主机设备的地址信息的技术。 在第一路由器设备处，从第一主机设备接收目的地为第二主机设备的分组。 第一主机设备被双连接到第一路由器和第二路由器设备。 第二路由器设备是与第一路由器设备的虚拟端口信道对的一部分。 向第二路由器设备发送消息，指示第一主机设备连接到第二路由器设备的消息。 该分组被封装为覆盖头，并被发送到连接到第二主机设备的第三路由器设备。 封装的分组包含与第一主机设备相关联的第二层地址和与第一主机设备相关联的第三层地址。