公开(公告)号：US20170026245A1

公开(公告)日：2017-01-26

申请号：US14878716

申请日：2015-10-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Girija Raghavendra Rao ,  Victor Manuel Moreno ,  Marc Binderberger ,  Lev Shvarts ,  Vrushali Ashtaputre

IPC: H04L12/24

CPC classification number: H04L41/12 ,  H04L45/02

Abstract: A method for assisting communication of a source host upon movement from a first Data center (DC) to a second DC is disclosed. The method includes identifying that the source host has moved from the first DC to the second DC, ensuring that packets identifying a source as the source host in the second DC are copied to a control plane network element, and, for a first destination host identified in a first packet copied to the control plane network element and identified as a host that is not in the second DC, updating an Address Resolution Protocol (ARP)/Neighbor Discovery Protocol (NDP) cache of the source host by sending, to the source host, a first ARP message/unsolicited neighbor advertisement specifying a Media Access Control (MAC) address of an edge router associated with the source host in the second DC as a destination MAC address for the first destination host.

Abstract translation: 公开了一种用于辅助源主机在从第一数据中心（DC）到第二DC的移动时的通信的方法。 该方法包括识别源主机已经从第一DC移动到第二DC，确保标识作为第二DC中的源主机的源的分组被复制到控制平面网元，并且对于识别出的第一目的地主机 在复制到控制平面网络元件并被识别为不在第二DC中的主机的第一分组中，通过将源主机的地址解析协议（ARP）/邻居发现协议（NDP））高速缓存发送到源 主机，第一ARP消息/未经请求的邻居通告，指定与第二DC中的源主机相关联的边缘路由器的媒体访问控制（MAC）地址作为第一目的地主机的目的地MAC地址。

公开(公告)号：US20170019328A1

公开(公告)日：2017-01-19

申请号：US14800269

申请日：2015-07-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Victor Manuel Moreno ,  Dhananjaya Rao

IPC: H04L12/707 ,  G06F9/455 ,  H04L29/08

CPC classification number: H04L45/22 ,  G06F9/45558 ,  G06F2009/4557 ,  G06F2009/45595 ,  H04L67/1095

Abstract: A system and a method are disclosed for synchronizing network convergence and virtual host migration in a network environment. An exemplary method includes upon receiving a message indicating that a mobile host manger will migrate a virtual host from a source node to a destination node in a network, pre-calculating a route for the virtual host at the destination node; and upon receiving a message indicating that the mobile host manager will freeze the virtual host, activating the pre-calculated route at a switch to minimize packet loss while the network converges. The pre-calculated route may be activated at a switch through which the virtual host at the source node connected to the network.

Abstract translation: 公开了一种在网络环境中同步网络融合和虚拟主机迁移的系统和方法。 一种示例性方法包括：在接收到指示移动主机管理器将虚拟主机从源节点迁移到网络中的目的地节点的消息时，预先计算目的地节点处的虚拟主机的路由; 并且在接收到指示移动主机管理器将冻结虚拟主机的消息时，在交换机处激活预先计算的路由以最小化网络收敛时的分组丢失。 预先计算的路由可以在交换机处被激活，通过该交换机，源节点处的虚拟主机连接到网络。

公开(公告)号：US20150163323A1

公开(公告)日：2015-06-11

申请号：US14103633

申请日：2013-12-11

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Victor Manuel Moreno ,  Dhananjaya Rao

IPC: H04L29/08

CPC classification number: H04L12/4675 ,  H04L12/4679 ,  H04L45/04 ,  H04L45/64

Abstract: An example method is provided in one example embodiment and includes receiving first values associated with a host located in a first overlay domain; translating the first values to second values, the second values being local values in a second overlay domain; storing the second values and corresponding first values in a mapping table for the second overlay domain; and advertising the second values for the host in the second overlay domain.

Abstract translation: 在一个示例实施例中提供了示例性方法，并且包括接收与位于第一覆盖域中的主机相关联的第一值; 将所述第一值转换为第二值，所述第二值是第二覆盖域中的本地值; 将第二值和对应的第一值存储在第二覆盖域的映射表中; 并在第二覆盖域中广告主机的第二值。

公开(公告)号：US20240323091A1

公开(公告)日：2024-09-26

申请号：US18734601

申请日：2024-06-05

Applicant: Cisco Technology, Inc.

Inventor： Girija Raghavendra Rao ,  Victor Manuel Moreno ,  Marc Binderberger ,  Lev Shvarts ,  Vrushali Ashtaputre

IPC: H04L41/12 ,  H04L45/02

CPC classification number: H04L41/12 ,  H04L45/02

Abstract: A method for assisting communication of a source host upon movement from a first Data center (DC) to a second DC is disclosed. The method includes identifying that the source host has moved from the first DC to the second DC, ensuring that packets identifying a source as the source host in the second DC are copied to a control plane network element, and, for a first destination host identified in a first packet copied to the control plane network element and identified as a host that is not in the second DC, updating an Address Resolution Protocol (ARP)/Neighbor Discovery Protocol (NDP) cache of the source host by sending, to the source host, a first ARP message/unsolicited neighbor advertisement specifying a Media Access Control (MAC) address of an edge router associated with the source host in the second DC as a destination MAC address for the first destination host.

公开(公告)号：US12052313B2

公开(公告)日：2024-07-30

申请号：US18106304

申请日：2023-02-06

Applicant: Cisco Technology, Inc.

Inventor： Prakash C. Jain ,  Sanjay Kumar Hooda ,  Marc Portoles Comeras ,  Vinay Saini ,  Victor Manuel Moreno

IPC: H04L67/51 ,  H04L41/0893 ,  H04L41/122 ,  H04L45/76 ,  H04L67/1001

CPC classification number: H04L67/10015 ,  H04L41/0893 ,  H04L41/122 ,  H04L45/76 ,  H04L67/51

Abstract: This disclosure describes techniques and mechanisms for providing hybrid cloud services for enterprise fabric. The techniques include enhancing an on-demand protocol (e.g., such as LISP) and allowing simplified security and/or firewall service insertion for datacenter servers providing those services. Accordingly, the techniques described herein provide hybrid cloud services that work in disaggregated, distributed, and consistent way, while avoiding complex datacenter network devices (e.g., such running overlay on TOR), replacing and moving the functionality to on demand protocol enabled servers, which intelligently receive the required mappings as well as registers and publishes the service information to intelligently interact with the network.

公开(公告)号：US12021701B2

公开(公告)日：2024-06-25

申请号：US16941243

申请日：2020-07-28

Applicant: Cisco Technology, Inc.

Inventor： Girija Raghavendra Rao ,  Victor Manuel Moreno ,  Marc Binderberger ,  Lev Shvarts ,  Vrushali Ashtaputre

IPC: H04L41/12 ,  H04L45/02

CPC classification number: H04L41/12 ,  H04L45/02

Abstract: A method for assisting communication of a source host upon movement from a first Data center (DC) to a second DC is disclosed. The method includes identifying that the source host has moved from the first DC to the second DC, ensuring that packets identifying a source as the source host in the second DC are copied to a control plane network element, and, for a first destination host identified in a first packet copied to the control plane network element and identified as a host that is not in the second DC, updating an Address Resolution Protocol (ARP)/Neighbor Discovery Protocol (NDP) cache of the source host by sending, to the source host, a first ARP message/unsolicited neighbor advertisement specifying a Media Access Control (MAC) address of an edge router associated with the source host in the second DC as a destination MAC address for the first destination host.

公开(公告)号：US20240205156A1

公开(公告)日：2024-06-20

申请号：US18589411

申请日：2024-02-27

Applicant: Cisco Technology, Inc.

Inventor： Victor Manuel Moreno ,  Sanjay Kumar Hooda ,  Anoop Vetteth ,  Prakash C. Jain

IPC: H04L47/125 ,  H04L12/16 ,  H04L45/00

CPC classification number: H04L47/125 ,  H04L12/16 ,  H04L45/56

Abstract: Techniques for software-defined service insertion. The techniques include a method of configuring a network for service insertion. The techniques include processing a master policy correlating an endpoint group pair, of source endpoint group and destination endpoint group, to a service graph. The service graph indicates a template service chain, and the template service chain indicates an ordering of a plurality of services. Processing the master policy includes disaggregating the master policy into at least one location specific policy, each of the at least one location specific policy corresponding to a separate location in the network and including traffic steering directives corresponding to a portion of the plurality of services associated with the separate location. The techniques further include causing each of the at least one location specific policy to be stored in association with the separate location to which that location specific policy corresponds.

公开(公告)号：US12003420B2

公开(公告)日：2024-06-04

申请号：US18103147

申请日：2023-01-30

Applicant: Cisco Technology, Inc.

Inventor： Victor Manuel Moreno ,  Sanjay Kumar Hooda ,  Anoop Vetteth ,  Prakash C. Jain

IPC: H04W4/00 ,  H04L12/16 ,  H04L45/00 ,  H04L47/125

CPC classification number: H04L47/125 ,  H04L12/16 ,  H04L45/56

Abstract: This disclosure describes techniques for software-defined service insertion. The techniques include a method of configuring a network for service insertion. The techniques include processing a master policy correlating an endpoint group pair, of source endpoint group and destination endpoint group, to a service graph. The service graph indicates a template service chain, and the template service chain indicates an ordering of a plurality of services. Processing the master policy includes disaggregating the master policy into at least one location specific policy, each of the at least one location specific policy corresponding to a separate location in the network and including traffic steering directives corresponding to a portion of the plurality of services associated with the separate location. The techniques further include causing each of the at least one location specific policy to be stored in association with the separate location to which that location specific policy corresponds.

公开(公告)号：US20230308389A1

公开(公告)日：2023-09-28

申请号：US17703965

申请日：2022-03-24

Applicant: Cisco Technology, Inc.

Inventor： Victor Manuel Moreno ,  Sanjay Kumar Hooda ,  Roberto Mitsuo Kobo ,  Balaji Pitta Venkatachalapathy

IPC: H04L45/64 ,  H04L12/46

CPC classification number: H04L45/64 ,  H04L12/4641

Abstract: Methods and devices configure edge nodes of a virtual network overlay to continuously forward data plane traffic flows between client devices of a common subnet over the course of at least some of the edge nodes being EF-configured. TF-configured edge nodes and EF-configured edge nodes both play roles in unilaterally inducing address discovery by sending to client devices address discovery responses that were not prompted by address discovery requests. TF-configured edge nodes then handle ensuing address discovery requests by proxy, and subsequently handle certain traffic flows according to an EF-compatible forwarding mode, while EF-configured edge nodes continue to forward traffic flows by IP routing normally. This averts throughput of data plane traffic over the network overlay being reduced as a side effect of the heterogeneously configured edge nodes, and averts the possibility of client devices broadcasting address discovery protocol requests as a result of remote client devices being unreachable.

公开(公告)号：US20220353186A1

公开(公告)日：2022-11-03

申请号：US17242601

申请日：2021-04-28

Applicant: Cisco Technology, Inc.

Inventor： Victor Manuel Moreno ,  Sanjay Kumar Hooda ,  Anoop Vetteth ,  Prakash C. Jain

IPC: H04L12/803 ,  H04L12/771 ,  H04L12/16

Abstract: This disclosure describes techniques for software-defined service insertion. The techniques include a method of configuring a network for service insertion. The techniques include processing a master policy correlating an endpoint group pair, of source endpoint group and destination endpoint group, to a service graph. The service graph indicates a template service chain, and the template service chain indicates an ordering of a plurality of services. Processing the master policy includes disaggregating the master policy into at least one location specific policy, each of the at least one location specific policy corresponding to a separate location in the network and including traffic steering directives corresponding to a portion of the plurality of services associated with the separate location. The techniques further include causing each of the at least one location specific policy to be stored in association with the separate location to which that location specific policy corresponds.