公开(公告)号：US20170331733A1

公开(公告)日：2017-11-16

申请号：US15155393

申请日：2016-05-16

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Kumar Hooda ,  Atri Indiresan ,  Sandesh Kumar B Narappa ,  Rajesh Arora

IPC: H04L12/741 ,  H04L12/947 ,  H04L12/46

CPC classification number: H04L45/74 ,  H04L12/4633 ,  H04L49/25

Abstract: In one embodiment, contextual service mobility in an enterprise fabric network environment (e.g., overlay and underlay networks) provides for moving of the location of a service being applied to packets with minimal updates to the mapping database. The mapping database is used to convert addresses of the overlay network to physical network and service addresses. The mapping database provides contextual lookup operations on the same destination address of a packet being forwarded in the overlay network to provide different results. The contextual lookup operations provide for a packet to be forwarded to a service node or its intended destination depending on the current context. In one embodiment, the enterprise fabric network uses Locator/ID Separation Protocol (LISP), a network architecture and set of protocols that uses different overlay and underlay namespaces and a distributed mapping database for converting an overlay address to an underlay address.

公开(公告)号：US20170041222A1

公开(公告)日：2017-02-09

申请号：US14820636

申请日：2015-08-07

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Kumar Hooda ,  Nalinaksh M. Pai ,  Atri Indiresan

IPC: H04L12/721 ,  H04L12/947 ,  H04L29/12

CPC classification number: H04L45/66 ,  H04L45/02 ,  H04L49/15 ,  H04L49/25 ,  H04L61/2007

Abstract: Methods and systems are provided for virtual expansion of a fabric network edge to include edge network devices. For example, unique virtual Internet Protocol (IP) addresses may be assigned to a plurality of L2 switches, wherein the L2 switches are connected to one or more fabric edge devices in a fabric, and wherein the L2 switches are located outside of the fabric. Next, the unique virtual IP addresses may be announced in an underlay of the fabric.

Abstract translation: 提供了用于将网络边缘虚拟扩展以包括边缘网络设备的方法和系统。 例如，唯一的虚拟互联网协议（IP）地址可以被分配给多个L2交换机，其中L2交换机连接到一个或多个织物边缘设备，并且其中L2交换机位于结构外部。 接下来，唯一的虚拟IP地址可以在织物的底层中公布。

公开(公告)号：US09531564B2

公开(公告)日：2016-12-27

申请号：US14155493

申请日：2014-01-15

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Anupama Ashok Lolage ,  Pags Krishnamoorthy ,  Sanjay Kumar Hooda ,  Nalinaksh M. Pai

IPC: H04L12/741 ,  H04L12/733 ,  H04L12/46 ,  H04L12/715 ,  H04L12/721

CPC classification number: H04L12/4633 ,  H04L12/4641 ,  H04L45/64 ,  H04L45/66

Abstract: Methods and systems are provided for detecting overlay end points which are a single physical hop away and employing a simplified overlay header instead of a regular overlay header for communications with the identified end points. The simplified overlay header may carry overlay protocol related forwarding and peer information and may be designed to carry locally significant forwarding information which avoids overlay lookup related overhead on encapsulation and decapsulation operations. The simplified overlay header may be handled in the same forwarding pipeline pass as the handling of the inner frame and may work across different forwarding engines. Upon detection of a single hop link/keepalive failure, the backup overlay (original overlay header) may be used for forwarding.

Abstract translation: 提供了用于检测作为单个物理跳越的重叠端点的方法和系统，并且采用简化的覆盖报头而不是用于与所识别的端点进行通信的常规覆盖报头。 简化的覆盖报头可以携带覆盖协议相关的转发和对等信息，并且可以被设计为承载本地有效的转发信息，这避免了在封装和解封装操作上的覆盖查找相关开销。 简化的覆盖报头可以处理在与内部帧的处理相同的转发流水线中，并且可以跨不同的转发引擎工作。 在检测到单跳链路/保活性故障时，可以使用备份覆盖（原始覆盖报头）进行转发。

公开(公告)号：US20150200848A1

公开(公告)日：2015-07-16

申请号：US14155493

申请日：2014-01-15

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Anupama Ashok Lolage ,  Pags Krishnamoorthy ,  Sanjay Kumar Hooda ,  Nalinaksh M. Pai

IPC: H04L12/741 ,  H04L12/733

CPC classification number: H04L12/4633 ,  H04L12/4641 ,  H04L45/64 ,  H04L45/66

Abstract: Methods and systems are provided for detecting overlay end points which are a single physical hop away and employing a simplified overlay header instead of a regular overlay header for communications with the identified end points. The simplified overlay header may carry overlay protocol related forwarding and peer information and may be designed to carry locally significant forwarding information which avoids overlay lookup related overhead on encapsulation and decapsulation operations. The simplified overlay header may be handled in the same forwarding pipeline pass as the handling of the inner frame and may work across different forwarding engines. Upon detection of a single hop link/keepalive failure, the backup overlay (original overlay header) may be used for forwarding.

Abstract translation: 提供了用于检测作为单个物理跳越的重叠端点的方法和系统，并且采用简化的覆盖报头而不是用于与所识别的端点进行通信的常规覆盖报头。 简化的覆盖报头可以携带覆盖协议相关的转发和对等信息，并且可以被设计为承载本地有效的转发信息，这避免了在封装和解封装操作上的覆盖查找相关开销。 简化的覆盖报头可以处理在与内部帧的处理相同的转发流水线中，并且可以跨不同的转发引擎工作。 在检测到单跳链路/保活性故障时，可以使用备份覆盖（原始覆盖报头）进行转发。