公开(公告)号：US20150063353A1

公开(公告)日：2015-03-05

申请号：US14018134

申请日：2013-09-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Shyam Kapadia ,  Puto H. Subagio ,  Yibin Yang ,  Nilesh Shah ,  Vipin Jain ,  Ashutosh Agrawal

IPC: H04L12/741 ,  H04L12/56

CPC classification number: H04L45/745 ,  H04L45/741

Abstract: An example method for implementation of virtual extensible local area network (VXLAN) in top-of-rack (ToR) switches in a network environment is provided and includes receiving a packet encapsulated with a VXLAN header having an unknown virtual tunnel endpoint (VTEP) Internet Protocol (IP) address in a network environment, and installing an entry at an index location of a forwarding table. The index location includes an encoding of the VTEP-IP address as a VTEP index (VTEP-IDX), and the entry maps a VXLAN interface to an IP address associated with a VXLAN network interface (VNI). In specific embodiments, the VTEP-IDX is logN bits, where N is a size of the forwarding table. The forwarding table indicates a destination VTEP IP address when encapsulating the packet, and the source VTEP IP address when decapsulating the packet.

Abstract translation: 提供了一种用于在网络环境中在机架（ToR）交换机中实现虚拟可扩展局域网（VXLAN）的示例性方法，包括接收使用具有未知虚拟隧道端点（VTEP）Internet的VXLAN头封装的分组 网络环境中的协议（IP）地址，以及在转发表的索引位置安装条目。 索引位置包括作为VTEP索引（VTEP-IDX）的VTEP-IP地址的编码，并且该条目将VXLAN接口映射到与VXLAN网络接口（VNI）相关联的IP地址。 在具体实施例中，VTEP-IDX是logN比特，其中N是转发表的大小。 转发表在封装数据包时指示目标VTEP IP地址，解封装数据包时的源VTEP IP地址。

公开(公告)号：US09565105B2

公开(公告)日：2017-02-07

申请号：US14018134

申请日：2013-09-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Shyam Kapadia ,  Puto H. Subagio ,  Yibin Yang ,  Nilesh Shah ,  Vipin Jain ,  Ashutosh Agrawal

IPC: H04L12/741 ,  H04L12/56

CPC classification number: H04L45/745 ,  H04L45/741

Abstract: An example method for implementation of virtual extensible local area network (VXLAN) in top-of-rack (ToR) switches in a network environment is provided and includes receiving a packet encapsulated with a VXLAN header having an unknown virtual tunnel endpoint (VTEP) Internet Protocol (IP) address in a network environment, and installing an entry at an index location of a forwarding table. The index location includes an encoding of the VTEP-IP address as a VTEP index (VTEP-IDX), and the entry maps a VXLAN interface to an IP address associated with a VXLAN network identifier (VNI). In specific embodiments, the VTEP-IDX is log N bits, where N is a size of the forwarding table. The forwarding table indicates a destination VTEP IP address when encapsulating the packet, and the source VTEP IP address when decapsulating the packet.

Abstract translation: 提供了一种用于在网络环境中在机架（ToR）交换机中实现虚拟可扩展局域网（VXLAN）的示例性方法，包括接收使用具有未知虚拟隧道端点（VTEP）Internet的VXLAN头封装的分组 网络环境中的协议（IP）地址，以及在转发表的索引位置安装条目。 索引位置包括作为VTEP索引（VTEP-IDX）的VTEP-IP地址的编码，并且该条目将VXLAN接口映射到与VXLAN网络标识符（VNI）相关联的IP地址。 在具体实施例中，VTEP-IDX是日志N比特，其中N是转发表的大小。 转发表在封装数据包时指示目标VTEP IP地址，解封装数据包时的源VTEP IP地址。

公开(公告)号：US09197553B2

公开(公告)日：2015-11-24

申请号：US13853128

申请日：2013-03-29

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Ashutosh Agrawal ,  Parag Bhide ,  Mahidas Prabhanjan

IPC: H04L12/713 ,  H04L12/773 ,  H04L29/12

CPC classification number: H04L61/103 ,  H04L45/586 ,  H04L45/60

Abstract: Techniques are presented herein for distributing address information of host devices in a network. At a first router device, a packet is received from a first host device that is destined for a second host device. The first host device is dually-connected to the first router and a second router device. The second router device is part of a virtual port channel pair with the first router device. A message is sent to the second router device, the message indicating that the first host device is connected to the second router device. The packet is encapsulated with an overlay header and is sent to a third router device that is connected to the second host device. The encapsulated packet contains a Layer 2 address associated with the first host device and a Layer 3 address associated with the first host device.

Abstract translation: 这里介绍了在网络中分配主机设备的地址信息的技术。 在第一路由器设备处，从第一主机设备接收目的地为第二主机设备的分组。 第一主机设备被双连接到第一路由器和第二路由器设备。 第二路由器设备是与第一路由器设备的虚拟端口信道对的一部分。 向第二路由器设备发送消息，指示第一主机设备连接到第二路由器设备的消息。 该分组被封装为覆盖头，并被发送到连接到第二主机设备的第三路由器设备。 封装的分组包含与第一主机设备相关联的第二层地址和与第一主机设备相关联的第三层地址。

公开(公告)号：US20140294005A1

公开(公告)日：2014-10-02

申请号：US13853128

申请日：2013-03-29

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Vipin Jain ,  Ashutosh Agrawal ,  Parag Bhide ,  Mahidas Prabhanjan

IPC: H04L12/713

CPC classification number: H04L61/103 ,  H04L45/586 ,  H04L45/60

Abstract: Techniques are presented herein for distributing address information of host devices in a network. At a first router device, a packet is received from a first host device that is destined for a second host device. The first host device is dually-connected to the first router and a second router device. The second router device is part of a virtual port channel pair with the first router device. A message is sent to the second router device, the message indicating that the first host device is connected to the second router device. The packet is encapsulated with an overlay header and is sent to a third router device that is connected to the second host device. The encapsulated packet contains a Layer 2 address associated with the first host device and a Layer 3 address associated with the first host device.

Abstract translation: 这里介绍了在网络中分配主机设备的地址信息的技术。 在第一路由器设备处，从第一主机设备接收目的地为第二主机设备的分组。 第一主机设备被双连接到第一路由器和第二路由器设备。 第二路由器设备是与第一路由器设备的虚拟端口信道对的一部分。 向第二路由器设备发送消息，指示第一主机设备连接到第二路由器设备的消息。 该分组被封装为覆盖头，并被发送到连接到第二主机设备的第三路由器设备。 封装的分组包含与第一主机设备相关联的第二层地址和与第一主机设备相关联的第三层地址。

公开(公告)号：US10348672B2

公开(公告)日：2019-07-09

申请号：US15720571

申请日：2017-09-29

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Ashutosh Agrawal ,  Parag Bhide ,  Mahidas Prabhanjan

IPC: H04L12/713 ,  H04L29/12 ,  H04L12/773

Abstract: Techniques are presented herein for distributing address information of host devices in a network. At a first router device, a packet is received from a first host device that is destined for a second host device. The first host device is dually-connected to the first router and a second router device. The second router device is part of a virtual port channel pair with the first router device. A message is sent to the second router device, the message indicating that the first host device is connected to the second router device. The packet is encapsulated with an overlay header and is sent to a third router device that is connected to the second host device. The encapsulated packet contains a Layer 2 address associated with the first host device and a Layer 3 address associated with the first host device.

公开(公告)号：US20180026934A1

公开(公告)日：2018-01-25

申请号：US15720571

申请日：2017-09-29

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Ashutosh Agrawal ,  Parag Bhide ,  Mahidas Prabhanjan

IPC: H04L29/12 ,  H04L12/773 ,  H04L12/713

CPC classification number: H04L61/103 ,  H04L45/586 ,  H04L45/60

Abstract: Techniques are presented herein for distributing address information of host devices in a network. At a first router device, a packet is received from a first host device that is destined for a second host device. The first host device is dually-connected to the first router and a second router device. The second router device is part of a virtual port channel pair with the first router device. A message is sent to the second router device, the message indicating that the first host device is connected to the second router device. The packet is encapsulated with an overlay header and is sent to a third router device that is connected to the second host device. The encapsulated packet contains a Layer 2 address associated with the first host device and a Layer 3 address associated with the first host device.

公开(公告)号：US09306837B1

公开(公告)日：2016-04-05

申请号：US13789990

申请日：2013-03-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Vipin Jain ,  Ashutosh Agrawal ,  Deepa Seshadri

IPC: H04L12/28 ,  H04L12/761

CPC classification number: H04L45/16

Abstract: A method is provided in one example embodiment and includes determining a source of a packet received at a network element and characterizing a link on which the packet was received. The method further includes forwarding the packet to an overlay network and locally connected hosts other than a source of the packet if the source of the packet is a local host and the link is a local link; forwarding the packet to hosts that are not dually-connected to the network element if the source of the packet is the local host and the link is a core link; and forwarding the packet as indicated in a multicast tree if the source of the packet is a non-local host and the link is a core link.

Abstract translation: 在一个示例实施例中提供了一种方法，并且包括确定在网络元件处接收的分组的源并表征其上接收分组的链路。 所述方法还包括：如果所述分组的源是本地主机，并且所述链路是本地链路，则将所述分组转发到覆盖网络和除所述分组的源之外的本地连接的主机; 如果分组的源是本地主机并且链路是核心链路，则将分组转发到不与网络元件双重连接的主机; 并且如果分组的源是非本地主机并且该链路是核心链路，则转发分组（如多播树中所示）。

公开(公告)号：US10432628B2

公开(公告)日：2019-10-01

申请号：US15051454

申请日：2016-02-23

Applicant: Cisco Technology, Inc.

Inventor： Thomas J. Edsall ,  Smita Rai ,  Satyam Sinha ,  Kit Chiu Chu ,  Sarang Dharmapurikar ,  Ashutosh Agrawal ,  Ravikanth Nasika

IPC: H04L29/06 ,  H04L12/911 ,  H04L12/725

Abstract: Disclosed are systems, methods, and computer-readable storage media for minimizing the number of entries in network access control lists (ACLs). In some embodiments of the present technology a networking device can receive, from a first computing device, a first data transmission intended for a second computing device, the first data transmission including first transmission data. The networking device can normalize at least a subset of the first transmission data based on a predetermined normalization algorithm, yielding a first normalized data set for the first data transmission. Subsequently, the networking device can identify a first access control list entry from a set of access control list entries based on the first normalized data set, the first access control list entry identifying a first action, and implement the first action in relation to the first data transmission.

公开(公告)号：US20190222516A1

公开(公告)日：2019-07-18

申请号：US16367868

申请日：2019-03-28

Applicant: Cisco Technology, Inc.

Inventor： Satyam Sinha ,  Smita Rai ,  Kit Chiu Chu ,  Ashutosh Agrawal ,  Wanli Wu ,  Ravikanth Nasika ,  Thomas J. Edsall ,  Geetha Anandakrishnan

IPC: H04L12/741 ,  H04L12/715 ,  H04L29/08 ,  H04L12/713

CPC classification number: H04L45/745 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/04 ,  H04L45/54 ,  H04L45/586 ,  H04L45/74 ,  H04L67/10 ,  H04L67/20

Abstract: Aspects of the embodiments include receiving a packet at a network element of a packet-switched network; identifying a presence of a shared service destination address in a header of the packet; identifying a shared service destination address for the packet based, at least in part, on a destination internet protocol (IP) address stored in a forward information base; and forwarding the packet to the shared service destination address.

公开(公告)号：US10320672B2

公开(公告)日：2019-06-11

申请号：US15145647

申请日：2016-05-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Satyam Sinha ,  Smita Rai ,  Kit Chiu Chu ,  Ashutosh Agrawal ,  Wanli Wu ,  Ravikanth Nasika ,  Thomas J. Edsall ,  Geetha Anandakrishnan

IPC: H04L12/741 ,  H04L12/715 ,  H04L12/713 ,  H04L29/08 ,  H04L12/751 ,  H04L12/46

Abstract: Aspects of the embodiments include receiving a packet at a network element of a packet-switched network; identifying a presence of a shared service destination address in a header of the packet; identifying a shared service destination address for the packet based, at least in part, on a destination internet protocol (IP) address stored in a forward information base; and forwarding the packet to the shared service destination address.