公开(公告)号：US20190037390A1

公开(公告)日：2019-01-31

申请号：US15660247

申请日：2017-07-26

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Hooda ,  Vrushali Ashtaputre ,  Sudhir Jain ,  Johnson Leong ,  Shree Murthy

IPC: H04W8/26 ,  H04L12/755 ,  H04W8/08

Abstract: A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases managed by control plane of the fabric network to update routing locator entries associated with L2-VNID and L3-VNID in one or more databases when a client moves from behind a first switch to behind a second switch. In some embodiments, the control plane finds the L3-VNID from the L2-VNID. The L3-VNID is used to search for all IP addresses corresponding to a client-MAC. At least new routing locator value that is used in the routing locator entries is provided to the first switch, the second switch, and border nodes associated with the fabric network.

公开(公告)号：US10952068B2

公开(公告)日：2021-03-16

申请号：US16779903

申请日：2020-02-03

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Hooda ,  Vrushali Ashtaputre ,  Sudhir Jain ,  Johnson Leong ,  Shree Murthy

IPC: H04W8/26 ,  H04L12/755 ,  H04W8/08 ,  H04L12/721

Abstract: A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases managed by control plane of the fabric network to update routing locator entries associated with L2-VNID and L3-VNID in one or more databases when a client moves from behind a first switch to behind a second switch. In some embodiments, the control plane finds the L3-VNID from the L2-VNID. The L3-VNID is used to search for all IP addresses corresponding to a client-MAC. At least new routing locator value that is used in the routing locator entries is provided to the first switch, the second switch, and border nodes associated with the fabric network.

公开(公告)号：US20200169872A1

公开(公告)日：2020-05-28

申请号：US16779903

申请日：2020-02-03

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Hooda ,  Vrushali Ashtaputre ,  Sudhir Jain ,  Johnson Leong ,  Shree Murthy

IPC: H04W8/26 ,  H04W8/08 ,  H04L12/755

Abstract: A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases managed by control plane of the fabric network to update routing locator entries associated with L2-VNID and L3-VNID in one or more databases when a client moves from behind a first switch to behind a second switch. In some embodiments, the control plane finds the L3-VNID from the L2-VNID. The L3-VNID is used to search for all IP addresses corresponding to a client-MAC. At least new routing locator value that is used in the routing locator entries is provided to the first switch, the second switch, and border nodes associated with the fabric network.

公开(公告)号：US20180278483A1

公开(公告)日：2018-09-27

申请号：US15990340

申请日：2018-05-25

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/24 ,  H04L12/751

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：US20150043329A1

公开(公告)日：2015-02-12

申请号：US14182429

申请日：2014-02-18

Applicant: Cisco Technology, Inc.

Inventor： Vrushali Ashtaputre ,  Gaurav Badoni ,  Dhananjaya Rao ,  Sreenivas Duvvuri ,  Hasmit Grover

IPC: H04L12/24 ,  H04L12/18

CPC classification number: H04L41/0668 ,  H04L12/1886 ,  H04L12/4633 ,  H04L12/4675

Abstract: Techniques are provided for designating, in an overlay transport virtualization (OTV) network connected to a data center, an edge device to act as a backup authoritative edge device (BAED) for an authoritative edge device (AED) for multicast packet encapsulation and forwarding. Data traffic associated with a given virtual local area network (VLAN) may be detected from a multicast source in the data center addressed to recipients in a site group. A mapping may be generated between the site group and a core data group in the OTV network for traffic from the multicast source. Advertisements may be sent of the mapping to edge devices in another data center across the OTV network. A similar configuration is presented for a BAED for inbound multicast traffic to a data center.

Abstract translation: 提供了技术，用于在连接到数据中心的覆盖传输虚拟化（OTV）网络中指定用于授权边缘设备（AED）的用于组播分组封装和转发的备份权威边缘设备（BAED）的边缘设备。 与给定的虚拟局域网（VLAN）相关联的数据业务可以从寻址到站点组中的接收者的数据中心中的组播源检测。 可以在OTV网络中的站点组和核心数据组之间生成用于来自组播源的流量的映射。 广告可以通过OTV网络发送到另一个数据中心的边缘设备的映射。 针对数据中心的入站组播流量的BAED提供了类似的配置。

公开(公告)号：US20190174301A1

公开(公告)日：2019-06-06

申请号：US16273436

申请日：2019-02-12

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Hooda ,  Vrushali Ashtaputre ,  Sudhir Jain ,  Johnson Leong ,  Shree Murthy

IPC: H04W8/26 ,  H04L12/755 ,  H04W8/08

Abstract: A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases managed by control plane of the fabric network to update routing locator entries associated with L2-VNID and L3-VNID in one or more databases when a client moves from behind a first switch to behind a second switch. In some embodiments, the control plane finds the L3-VNID from the L2-VNID. The L3-VNID is used to search for all IP addresses corresponding to a client-MAC. At least new routing locator value that is used in the routing locator entries is provided to the first switch, the second switch, and border nodes associated with the fabric network.

公开(公告)号：US10313155B2

公开(公告)日：2019-06-04

申请号：US13939667

申请日：2013-07-11

Applicant: Cisco Technology, Inc.

Inventor： Gaurav Badoni ,  Dhananjaya Rao ,  Hasmit Grover ,  Senthil Kenchiah ,  Vrushali Ashtaputre

IPC: H04L12/24 ,  H04L12/46 ,  H04L12/715 ,  H04L12/703 ,  H04L12/717

Abstract: In one embodiment, an authoritative edge device (AED)-server in a computer network maintains assignment of an active AED for a particular virtual local area network (VLAN), and in response to a triggered re-assignment, sends an AED change request identifying an old active AED for the particular VLAN and a new active AED for the particular VLAN (e.g., and/or corresponding backups). In response to receiving the change request, the old active AED ceases forwarding of traffic for the particular VLAN and transmits a relinquishment confirmation into the network. Also, in response to receiving the change request and the relinquishment confirmation from the old active AED, the new active AED assumes responsibility for traffic forwarding for the particular VLAN and transmits an activation confirmation into the network. The change request is then deemed completed by the AED-sever upon receipt of both the relinquishment confirmation and the activation confirmation.

公开(公告)号：US10212583B1

公开(公告)日：2019-02-19

申请号：US15660247

申请日：2017-07-26

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Hooda ,  Vrushali Ashtaputre ,  Sudhir Jain ,  Johnson Leong ,  Shree Murthy

IPC: H04W4/00 ,  H04W8/26 ,  H04L12/755 ,  H04W8/08

Abstract: A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases managed by control plane of the fabric network to update routing locator entries associated with L2-VNID and L3-VNID in one or more databases when a client moves from behind a first switch to behind a second switch. In some embodiments, the control plane finds the L3-VNID from the L2-VNID. The L3-VNID is used to search for all IP addresses corresponding to a client-MAC. At least new routing locator value that is used in the routing locator entries is provided to the first switch, the second switch, and border nodes associated with the fabric network.

公开(公告)号：US09985837B2

公开(公告)日：2018-05-29

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 ,  H04L12/751

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：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。