公开(公告)号：US09699065B2

公开(公告)日：2017-07-04

申请号：US14820730

申请日：2015-08-07

Applicant: Cisco Technology, Inc.

Inventor： Gaofeng Tao ,  Alan Xiao-rong Wang ,  Yu Zhang ,  Dapeng Liu

IPC: H04L12/751 ,  H04L12/24 ,  H04W36/18 ,  H04W36/38 ,  H04W76/02

CPC classification number: H04L45/02 ,  H04L41/0816 ,  H04W36/18 ,  H04W36/385 ,  H04W76/12

Abstract: A software defined network controller detects when a host has moved between network elements in a network. The controller generates a list of network elements to which the host has roamed, the list being sorted by time when the host is attached to a network element so that a most recent network element to which the host is attached is the root network element and at a head of the list. The controller updates the root network element in the list first for traffic flow associated with the host. The controller sends commands to the network elements to program a tunnel from each previous point of attachment network element in the list to the most recent root network element in the list in reverse order of the roaming path so as to route traffic for the host via a tunnel.

公开(公告)号：US20160065455A1

公开(公告)日：2016-03-03

申请号：US14472469

申请日：2014-08-29

Applicant: Cisco Technology, Inc.

Inventor： Alan Xiao-rong Wang ,  Dapeng Liu ,  Yu Zhang ,  Gaofeng Tao

IPC: H04L12/721 ,  H04L12/733 ,  H04L12/715 ,  H04L29/08 ,  H04L12/851 ,  H04L12/859

CPC classification number: H04L45/38 ,  H04L45/04 ,  H04L45/20 ,  H04L47/2441 ,  H04L47/2475

Abstract: Techniques whereby a LAN-side border router observes all packets of an application flow from both directions so that the application recognition performed on the LAN-side border router functions properly. A border router may implement flags in a flow cache to indicate whether the border router is the LAN-side border router and/or a WAN-side border router for an application flow. As packets are received at a border router at either the LAN interface or WAN interface, the flags associated with packet's application flows are examined to determine if the border router is the LAN-side border router for the application flow. If so, then application recognition and routing control may be performed. If not, the packet may be redirected to another border router that may be the LAN-side border router or the WAN-side border router for the application flow to insure that border router observes the packet.

Abstract translation: LAN侧边界路由器从两个方向观察应用流的所有分组的技术，使得在LAN侧边界路由器上执行的应用识别功能正常工作。 边界路由器可以在流缓存中实现标志，以指示边界路由器是否是用于应用流的LAN侧边界路由器和/或WAN侧边界路由器。 当分组在LAN接口或WAN接口处的边界路由器处被接收时，检查与分组的应用流相关联的标志，以确定边界路由器是否是应用流的LAN侧边界路由器。 如果是这样，则可以执行应用识别和路由控制。 如果不是，则该分组可以被重定向到可能是用于该应用流的LAN侧边界路由器或WAN侧边界路由器的另一边界路由器，以确保边界路由器观察该分组。

公开(公告)号：US09137140B2

公开(公告)日：2015-09-15

申请号：US14022503

申请日：2013-09-10

Applicant: Cisco Technology, Inc.

Inventor： Gaofeng Tao ,  Alan Xiao-rong Wang ,  Yu Zhang ,  Dapeng Liu

IPC: H04L12/751 ,  H04L12/24 ,  H04W36/38 ,  H04W76/02

CPC classification number: H04L45/02 ,  H04L41/0816 ,  H04W36/18 ,  H04W36/385 ,  H04W76/12

Abstract: A software defined network controller detects when a host has moved between network elements in a network. The controller generates a list of network elements to which the host has roamed, the list being sorted by time when the host is attached to a network element so that a most recent network element to which the host is attached is the root network element and at a head of the list. The controller updates the root network element in the list first for traffic flow associated with the host. The controller sends commands to the network elements to program a tunnel from each previous point of attachment network element in the list to the most recent root network element in the list in reverse order of the roaming path so as to route traffic for the host via a tunnel.

Abstract translation: 软件定义的网络控制器检测主机何时在网络中的网元之间移动。 控制器生成主机已经漫游的网元的列表，该列表按主机被附加到网络元件的时间进行排序，使得主机附加的最新网络元素是根网元，并且在 名单的头。 控制器首先更新列表中的根网元，以便与主机相关联的流量。 控制器向网络元件发送命令以将隧道从列表中的每个先前连接网络元素编程到列表中的最新根网元件，其顺序与漫游路径相反，以便经由 隧道。

公开(公告)号：US20190268263A1

公开(公告)日：2019-08-29

申请号：US16291417

申请日：2019-03-04

Applicant: Cisco Technology, Inc.

Inventor： Alan Xiao-rong Wang ,  Dapeng Liu ,  Yu Zhang ,  Gaofeng Tao

IPC: H04L12/721 ,  H04L12/733 ,  H04L12/851 ,  H04L12/859 ,  H04L12/715

Abstract: Techniques whereby a LAN-side border router observes all packets of an application flow from both directions so that the application recognition performed on the LAN-side border router functions properly. A border router may implement flags in a flow cache to indicate whether the border router is the LAN-side border router and/or a WAN-side border router for an application flow. As packets are received at a border router at either the LAN interface or WAN interface, the flags associated with packet's application flows are examined to determine if the border router is the LAN-side border router for the application flow. If so, then application recognition and routing control may be performed. If not, the packet may be redirected to another border router that may be the LAN-side border router or the WAN-side border router for the application flow to insure that border router observes the packet.

公开(公告)号：US20150341254A1

公开(公告)日：2015-11-26

申请号：US14820730

申请日：2015-08-07

Applicant: Cisco Technology, Inc.

Inventor： Gaofeng Tao ,  Alan Xiao-rong Wang ,  Yu Zhang ,  Dapeng Liu

IPC: H04L12/751 ,  H04W76/02 ,  H04W36/18

CPC classification number: H04L45/02 ,  H04L41/0816 ,  H04W36/18 ,  H04W36/385 ,  H04W76/12

Abstract: A software defined network controller detects when a host has moved between network elements in a network. The controller generates a list of network elements to which the host has roamed, the list being sorted by time when the host is attached to a network element so that a most recent network element to which the host is attached is the root network element and at a head of the list. The controller updates the root network element in the list first for traffic flow associated with the host. The controller sends commands to the network elements to program a tunnel from each previous point of attachment network element in the list to the most recent root network element in the list in reverse order of the roaming path so as to route traffic for the host via a tunnel.

公开(公告)号：US20240340687A1

公开(公告)日：2024-10-10

申请号：US18358719

申请日：2023-07-25

Applicant: Cisco Technology, Inc.

Inventor： Tony Shen ,  Hongbo Xia ,  Alan Xiao-rong Wang ,  Yin Wang

IPC: H04W28/02 ,  H04W28/08

CPC classification number: H04W28/0268 ,  H04W28/0284 ,  H04W28/0967

Abstract: Aspects of the present disclosure are directed to dynamic adjustment of load-balancing weights across multiple network transport interfaces in a network, informed in part by Quality of Service (QoS) metrics. In one aspect, a method includes determining one or more metrics based on one or more Software-defined Wide Area Network (SDWAN) session level throughput and SDWAN session loss through one or more tunnels; generating a Quality of Service (QoS) SDWAN session level shape rate per tunnel based on the one or more metrics; and dynamically adjusting an SDWAN forwarding load-balance weight for each of the one or more tunnels based on the QoS SDWAN session level shape rate.

公开(公告)号：US10257083B2

公开(公告)日：2019-04-09

申请号：US14472469

申请日：2014-08-29

Applicant: Cisco Technology, Inc.

Inventor： Alan Xiao-rong Wang ,  Dapeng Liu ,  Yu Zhang ,  Gaofeng Tao

IPC: H04L12/701 ,  H04L12/721 ,  H04L12/851 ,  H04L12/859 ,  H04L12/715 ,  H04L12/733

Abstract: Techniques whereby a LAN-side border router observes all packets of an application flow from both directions so that the application recognition performed on the LAN-side border router functions properly. A border router may implement flags in a flow cache to indicate whether the border router is the LAN-side border router and/or a WAN-side border router for an application flow. As packets are received at a border router at either the LAN interface or WAN interface, the flags associated with packet's application flows are examined to determine if the border router is the LAN-side border router for the application flow. If so, then application recognition and routing control may be performed. If not, the packet may be redirected to another border router that may be the LAN-side border router or the WAN-side border router for the application flow to insure that border router observes the packet.

公开(公告)号：US20150071111A1

公开(公告)日：2015-03-12

申请号：US14022503

申请日：2013-09-10

Applicant: Cisco Technology, Inc.

Inventor： Gaofeng Tao ,  Alan Xiao-rong Wang ,  Yu Zhang ,  Dapeng Liu

IPC: H04L12/751 ,  H04L12/24

CPC classification number: H04L45/02 ,  H04L41/0816 ,  H04W36/18 ,  H04W36/385 ,  H04W76/12

Abstract: A software defined network controller detects when a host has moved between network elements in a network. The controller generates a list of network elements to which the host has roamed, the list being sorted by time when the host is attached to a network element so that a most recent network element to which the host is attached is the root network element and at a head of the list. The controller updates the root network element in the list first for traffic flow associated with the host. The controller sends commands to the network elements to program a tunnel from each previous point of attachment network element in the list to the most recent root network element in the list in reverse order of the roaming path so as to route traffic for the host via a tunnel.

Abstract translation: 软件定义的网络控制器检测主机何时在网络中的网元之间移动。 控制器生成主机已经漫游的网元的列表，该列表按主机被附加到网络元件的时间进行排序，使得主机附加的最新网络元素是根网元，并且在 名单的头。 控制器首先更新列表中的根网元，以便与主机相关联的流量。 控制器向网络元件发送命令以将隧道从列表中的每个先前连接网络元素编程到列表中的最新根网元件，其顺序与漫游路径相反，以便经由 隧道。