公开(公告)号：US20150046572A1

公开(公告)日：2015-02-12

申请号：US13960929

申请日：2013-08-07

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/931 ,  G06F9/455

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.

Abstract translation: 提供了为虚拟机提供网络资源的技术。 在第一交换设备处，从虚拟交换机接收配置请求消息，为虚拟交换机管理的虚拟机提供虚拟网络分段资源。 第一交换机设备为虚拟机提供虚拟网络分段资源。 第一交换设备向第二交换设备发送包括描述虚拟网络分段资源的信息的第一同步消息。 第二开关装置是第一开关装置的对端。 第一交换设备还向第二交换设备发送第二同步消息，该第二同步消息包括指示第一交换设备处于用于维护虚拟机的活动状态的状态信息，并且第二交换设备将被置于休眠状态 为虚拟机提供服务。

公开(公告)号：US20150016300A1

公开(公告)日：2015-01-15

申请号：US13939079

申请日：2013-07-10

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Dileep K. Devireddy ,  Shyam Kapadia ,  Yibin Yang

IPC: H04L12/24 ,  H04L12/56

CPC classification number: H04L12/4641 ,  H04L41/0893 ,  H04L45/741

Abstract: A method is provided in one example embodiment and includes establishing a virtual trunk link between a first network element and a second network element. The first and second network elements are located at a first site and the first site and a second site comprise at least a portion of an overlay network. The method further includes receiving data traffic at the first network element, which data traffic is associated with a segment of the overlay network, and mapping a first network identifier allocated to the overlay network segment at the first network element to a virtual trunk link and a VLAN ID. The method additionally includes forwarding the data traffic from the first network element to the second network element via the virtual trunk link with the VLAN ID.

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括在第一网络元件和第二网络元件之间建立虚拟中继线链路。 第一和第二网络元件位于第一站点，并且第一站点和第二站点包括覆盖网络的至少一部分。 该方法还包括在第一网络元件处接收数据业务，哪个数据业务与覆盖网络的一个段相关联，以及将分配给第一网元的覆盖网段的第一网络标识符映射到虚拟中继链路，以及 VLAN ID。 该方法还包括经由具有VLAN ID的虚拟中继链路将数据业务从第一网元转发到第二网元。

公开(公告)号：US20140348166A1

公开(公告)日：2014-11-27

申请号：US13898572

申请日：2013-05-21

Applicant: Cisco Technology, Inc.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Liqin Dong ,  Shyam Kapadia

IPC: H04L12/721

CPC classification number: H04L45/124 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/12 ,  H04L45/66

Abstract: An example method for determining an optimal forwarding path across a network having VxLAN gateways configured to implement both FGL networking and VxLAN capabilities can include learning RBridge nicknames associated with the VxLAN gateways in the network. Additionally, the method can include determining a path cost over the FGL network between each of the VxLAN gateways and a source node and a path cost over the VxLAN between each of the VxLAN gateways and a destination node. Further, the method can include determining an encapsulation overhead metric associated with the VxLAN and selecting one of the VxLAN gateways as an optimal VxLAN gateway. The selection can be based on the computed path costs over the FGL network and the VxLAN and the encapsulation overhead metric.

Abstract translation: 用于确定具有配置为实现FGL组网和VxLAN能力的VxLAN网关的网络的最佳转发路径的示例性方法可以包括学习与网络中的VxLAN网关相关联的RBridge昵称。 另外，该方法可以包括确定每个VxLAN网关和源节点之间的FGL网络上的路径开销以及每个VxLAN网关与目的地节点之间的VxLAN上的路径开销。 此外，该方法可以包括确定与VxLAN相关联的封装开销度量并且选择VxLAN网关之一作为最佳VxLAN网关。 该选择可以基于计算出的在FGL网络和VxLAN上的路径开销以及封装开销度量。

公开(公告)号：US20140347994A1

公开(公告)日：2014-11-27

申请号：US14456296

申请日：2014-08-11

Applicant: Cisco Technology, Inc.

Inventor： Shyam Kapadia ,  Nilesh Shah

IPC: H04L12/803 ,  H04L12/743 ,  H04L12/935 ,  H04L12/26 ,  H04L12/851

CPC classification number: H04L47/125 ,  H04L43/026 ,  H04L43/0817 ,  H04L43/0882 ,  H04L45/7453 ,  H04L47/2483 ,  H04L49/3009

Abstract: Methods and apparatus for load balancing across member ports for traffic egressing out of a port channel are provided herein. An example method according to one implementation may include: assigning a quantized value based on current load to each of the network ports in the port channel; receiving a data packet addressed to egress through the port channel; identifying a traffic flow with which the received data packet is associated; determining whether the identified traffic flow is a new traffic flow; and selecting one of the network ports in the port channel as an egress port. Selection of the egress port may be weighted according to the quantized value of each of the network ports in the port channel.

Abstract translation: 本文提供了用于在端口信道外出流量的成员端口之间的负载平衡的方法和装置。 根据一个实现的示例性方法可以包括：基于当前负载将量化值分配给端口信道中的每个网络端口; 通过端口信道接收寻址到出口的数据分组; 识别所接收的数据分组与之相关联的业务流; 确定所识别的业务流是否是新的业务流; 并选择端口信道中的一个网络端口作为出口端口。 可以根据端口信道中每个网络端口的量化值来加权出口端口的选择。

公开(公告)号：US20140098823A1

公开(公告)日：2014-04-10

申请号：US13648394

申请日：2012-10-10

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Shyam Kapadia ,  Nilesh Shah ,  Bhushan Kanekar

IPC: H04L12/56

CPC classification number: H04L49/10 ,  H04L45/58 ,  H04L45/742 ,  H04L45/745 ,  H04L49/25

Abstract: Techniques are provided for updating routing tables of switch devices. At a first switch device of a first rack unit in a network, information is received about addresses of host devices in the network. The addresses are stored in a software cache. A packet is received from a first host device assigned to a first subnet and housed in the first rack unit. The packet is destined for a second host device assigned to a second subnet and housed in a second rack unit in the network. The packet is forwarded using the subnet entry and it may remain sub-optimal during a period before which an entry can be installed form a software cache. The software cache is evaluated to determine the address of the second host device. The packet is then forwarded optimally. This will ensure any-to-any communications in the network initially sub-optimally and subsequently optimally.

Abstract translation: 提供了更新交换机设备路由表的技术。 在网络中的第一机架单元的第一交换设备处，接收关于网络中的主机设备的地址的信息。 地址存储在软件缓存中。 从分配给第一子网并被容纳在第一机架单元中的第一主机装置接收分组。 分组目的地是分配给第二子网并被容纳在网络中的第二机架单元中的第二主机设备。 使用子网条目转发数据包，并且可以在可以从软件高速缓存安装条目的时间段内保持次优。 评估软件高速缓存以确定第二主机设备的地址。 数据包然后被最佳地转发。 这将确保网络中的任何对任何通信最初都处于最佳和最佳状态。

公开(公告)号：US20230421498A1

公开(公告)日：2023-12-28

申请号：US17816341

申请日：2022-07-29

Applicant: Cisco Technology, Inc.

Inventor： Lukas Krattiger ,  Shyam Kapadia ,  Massimiliano Ardica ,  Shankar Gopalkrishnan

IPC: H04L45/745 ,  H04L45/00 ,  H04L61/103

CPC classification number: H04L45/745 ,  H04L45/22 ,  H04L61/103

Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media for providing interoperable heterogenous networks. A method comprises configuring a logical network with a first network and a second network; receiving a request message from a source device by the first border device in the first network, wherein the request message includes a related to a media access control (MAC) address associated with a destination device in the second network; sending a proxy message to the second border device based on the request message, the proxy message having a source address that identifies an external IP address associated with the first border device; receiving a response message including the MAC address of the destination device, wherein the response message is addressed to the external address of the first border device; and sending a border gateway protocol (BGP) update including the MAC address of the destination device.

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：US11418399B2

公开(公告)日：2022-08-16

申请号：US16399043

申请日：2019-04-30

Applicant: Cisco Technology, Inc.

Inventor： Uffaz Nathaniel ,  Aakruthi Ramkumar Gopisetty ,  Jason David Notari ,  Shyam Kapadia ,  Lukas Krattiger

IPC: H04L41/08 ,  H04L12/46 ,  H04L41/0806 ,  H04L41/0893 ,  H04L41/12 ,  H04L45/74

Abstract: The present technology provides a framework for user-guided end-to-end automation of network deployment and management, that enables a user to guide the automation process for any kind of network deployment from the ground up, as well as offering network management, visibility, and compliance verification. The disclosed technology accomplishes this by creating a stateful and interactive virtual representation of a fabric using a customizable underlay fabric template instantiated with user-provided parameter values and network topology data computed from one or more connected network devices. A set of expected configurations corresponding to the user-specified underlay and overly fabric policies is then generated for deployment onto the connected network devices. Network deviations from the intended fabric policies are addressed by the provision of one or more configuration lines to be deployed onto or removed from the connected network devices to bring the network state in agreement with the set of expected configuration.

公开(公告)号：US20210377128A1

公开(公告)日：2021-12-02

申请号：US16930947

申请日：2020-07-16

Applicant: Cisco Technology, Inc.

Inventor： Shyam Kapadia ,  Liqin Dong ,  Lukas Krattiger

IPC: H04L12/24 ,  H04L12/751 ,  H04L12/715 ,  H04L9/08 ,  H04L9/32

Abstract: Techniques for utilizing a Software-Defined-Networking (SDN) controller and/or a Data Center Network Manager (DCNM) and network border gateway switches associated with a multi-site cloud computing network to provide reachability data indicating physical links between the border gateways disposed in different sites of the multi-site network to establish secure connection tunnels utilizing the physical links and unique encryption keys. The SDN controller and/or DCNM may be configured to generate a physical underlay model representing the physical underlay, or network transport capabilities, and/or a logical overlay model representing a logical overlay, or overlay control-plane, of the multi-site network. The SDN controller may also generate an encryption key model representing the associations between the encryption keys and the physical links between the associated network border gateway switches. The SDN controller may utilize the models to determine route paths for transmitting network traffic spanning over different sites of the multi-site network at line speed.

公开(公告)号：US20200296039A1

公开(公告)日：2020-09-17

申请号：US16886973

申请日：2020-05-29

Applicant: Cisco Technology, Inc.

Inventor： Sathish Srinivasan ,  Shyam Kapadia ,  Lukas Krattiger ,  Rajesh Sharma

IPC: H04L12/741 ,  H04L12/713

Abstract: A first network device advertises routes of locally connected routes/subnetworks based on the connectivity of the host with respect to peer network devices. The first network device establishes a virtual port channel associated with a virtual network address. The virtual port channel includes the first network device associated with a first network address and a second network device associated with a second network address. The first network device detects that a host is connected to the first network device and determines a next hop address to associate with the host. The next hop address is determined based on whether the host is also connected to the second network device of the virtual port channel. The first network device generates a route advertisement associating the next hop address with the host.