公开(公告)号：US20190068449A1

公开(公告)日：2019-02-28

申请号：US15683196

申请日：2017-08-22

Applicant: Cisco Technology, Inc.

Inventor： Vrishab Sikand ,  Liqin Dong ,  Lukas Krattiger ,  Lifen Tian

IPC: H04L12/24 ,  H04L12/46

Abstract: The present disclosure involves systems and methods for automating interconnecting or stitching disparate Layer 2 domains across data center interconnects without the need to renumber virtual local area networks (VLANs) within an existing network. The interconnected networks may allow components or virtual machines, such as containers, within the connected networks or data centers to exchange Layer 2 communications while the connected VLANs or fabrics retain existing VLAN identification numbers to minimize alterations made to the data center networks. Further, the process of interconnecting the data centers may be automated such that administrators of the networks may provide an indication of interconnecting the data center networks without the need to manually access and configure edge devices of the networks to facilitate the Layer 2 communication.

公开(公告)号：US10044562B2

公开(公告)日：2018-08-07

申请号：US14932719

申请日：2015-11-04

Applicant: Cisco Technology, Inc.

Inventor： Vrishab Sikand ,  Victor Moreno ,  Liqin Dong ,  Lifen Tian ,  Shyam Kapadia

IPC: G06F15/177 ,  H04L12/24 ,  H04L29/12

Abstract: Techniques are disclosed for configuring a LISP mobility network. A management tool receives a configuration for a network fabric. The configuration specifies values for one or more attributes associated with a Locator ID Separation Protocol (LISP)-enabled network. The management tool generates one or more commands based on the specified values for the one or more attributes associated with the LISP-enabled network. The generated commands are distributed to a plurality of network devices in the network fabric. Each network device executes the one or more commands to configure the network fabric.

公开(公告)号：US09838315B2

公开(公告)日：2017-12-05

申请号：US14811861

申请日：2015-07-29

Applicant: Cisco Technology, Inc.

Inventor： Shyam Kapadia ,  Lukas Krattiger ,  Vrishab Sikand

IPC: H04L12/741 ,  H04L12/721 ,  H04L12/715 ,  H04L12/931 ,  H04L12/66

CPC classification number: H04L45/745 ,  H04L12/66 ,  H04L45/04 ,  H04L45/54 ,  H04L45/72 ,  H04L49/70

Abstract: In one embodiment, a method for improving routing for a stretched subnet includes receiving a first communication on a border leaf of the stretched subnet, where the border leaf is a top of rack (ToR) switch configured to facilitate connectivity between an internal data center fabric and at least one external site associated with the stretched subnet, based on routing information received with the received communication, identifying a source address for the received communication as either from within the internal data center fabric or from the at least one external site, and if the source address is from the external site, storing an abbreviated route based on the source address in at least one hardware table, where the abbreviated route is a route to the at least one external site, and upon subsequent receipt of a second communication to be forwarded to the source address, forwarding the second communication in accordance with the abbreviated route.

公开(公告)号：US09590824B1

公开(公告)日：2017-03-07

申请号：US14451575

申请日：2014-08-05

Applicant: Cisco Technology, Inc.

Inventor： Vrishab Sikand ,  Liqin Dong ,  Shyam Kapadia ,  Lukas Krattiger

IPC: H04L12/46 ,  H04L29/12 ,  H04L12/56 ,  H04L29/06

CPC classification number: H04L12/4666 ,  H04L45/741 ,  H04L61/103 ,  H04L61/6022 ,  H04L69/18

Abstract: Techniques are presented to signal where a virtual machine (host) has moved in a data center networking environment. These techniques use Multiprotocol Border Gateway Protocol (MP BGP) alone, and are particularly useful in a multi-vendor environment using existing standards. Reverse Address Resolution Protocol (RARP) broadcast is not needed, therefore, no L2 extension is needed across a data center interface for tenants that do not require L2 extension for purposes other than a host move. This scheme works for both inter- and intra-fabric moves.

Abstract translation: 提供技术来指示虚拟机（主机）在数据中心网络环境中移动的位置。 这些技术单独使用多协议边界网关协议（MP BGP），并且在使用现有标准的多供应商环境中特别有用。 不需要反向地址解析协议（RARP）广播，因此，对于不需要L2扩展的租户，除了主机移动之外，不需要跨数据中心接口进行L2扩展。 该方案适用于帧间和帧间移动。