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公开(公告)号：US10439880B2
公开(公告)日：2019-10-08
申请号：US14533975
申请日：2014-11-05
Applicant: CISCO TECHNOLOGY, INC.
IPC: G06F15/173 , H04L12/24 , H04L12/26 , H04L12/42 , H04L12/755 , H04L12/751 , H04L12/721 , H04L12/705 , H04L12/703
Abstract: In one embodiment, a method includes identifying a change in network topology at a network device, transmitting a test packet from the network device to determine if an adjacent network device located in a backup path has converged following the network topology change, and updating a forwarding information base at the network device in response to the network topology change if a response to the test packet indicates that the adjacent network device has converged. An apparatus and logic are also disclosed herein.
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公开(公告)号：US09871675B2
公开(公告)日：2018-01-16
申请号：US15267007
申请日：2016-09-15
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Darrel Lewis , Gregg Schudel , John Mullooly , Isidoros Kouvelas , Jesper Skriver , Christian Cassar , Dino Farinacci , Fabio Maino
IPC: H04L12/46 , H04L12/66 , H04L12/723 , H04L12/911
CPC classification number: H04L12/4633 , H04L12/46 , H04L12/4641 , H04L12/66 , H04L45/50 , H04L47/825
Abstract: In one embodiment, a method includes receiving at a first network device in a first virtual private network, a packet destined for a second network device in communication with a second virtual private network, and transmitting the packet over the second network, wherein the packet is encapsulated for transmittal on a tunnel extending from the first network device to the second network device. The first network device is in communication with a system operable to map and encapsulate the packet and provide an overlay that traverses over the second virtual private network. An apparatus and logic are also disclosed herein.
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公开(公告)号：US20160100377A1
公开(公告)日：2016-04-07
申请号：US14508907
申请日：2014-10-07
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Stewart Frederick Bryant , Christian Cassar , Willem Maria Verrydt
IPC: H04W64/00
CPC classification number: H04W64/00
Abstract: An example method for independently verifying a transit point in a network environment is provided and includes receiving, at a transit point in a packet network, at least two radio signals from corresponding different radio sources, receiving, at the transit point, a sampling request in an packet message, and transmitting in another packet message a sample of the at least two radio signals such that by comparing the sample with an expected sample, a location of the transit point is determined. The expected sample can comprise another sample of the at least two radio signals that would have been received by the transit point at an expected location at a time of receipt of the sampling request, and if the expected sample matches the sample, the transit point is determined to be at the expected location.
Abstract translation: 提供了用于独立地验证网络环境中的转接点的示例性方法，并且包括在分组网络中的转接点处接收来自相应的不同无线电源的至少两个无线电信号，在中转点处接收一个采样请求 分组消息，并且在另一分组消息中发送所述至少两个无线电信号的样本，使得通过将所述样本与预期样本进行比较来确定所述中转点的位置。 预期采样可以包括在接收采样请求时在预期位置处由转接点接收到的至少两个无线电信号的另一采样，并且如果预期采样与样本匹配，则转接点为 决定在预期的位置。
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公开(公告)号：US20170005831A1
公开(公告)日：2017-01-05
申请号：US15267007
申请日：2016-09-15
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Darrel Lewis , Gregg Schudel , John Mullooly , Isidoros Kouvelas , Jesper Skriver , Christian Cassar , Dino Farinacci , Fabio Maino
IPC: H04L12/46 , H04L12/911 , H04L12/723 , H04L12/66
CPC classification number: H04L12/4633 , H04L12/46 , H04L12/4641 , H04L12/66 , H04L45/50 , H04L47/825
Abstract: In one embodiment, a method includes receiving at a first network device in a first virtual private network, a packet destined for a second network device in communication with a second virtual private network, and transmitting the packet over the second network, wherein the packet is encapsulated for transmittal on a tunnel extending from the first network device to the second network device. The first network device is in communication with a system operable to map and encapsulate the packet and provide an overlay that traverses over the second virtual private network. An apparatus and logic are also disclosed herein.
Abstract translation: 在一个实施例中，一种方法包括在第一虚拟专用网络中的第一网络设备处接收目的地是与第二虚拟专用网络通信的第二网络设备的分组，以及通过所述第二网络发送所述分组，其中所述分组是 封装在从第一网络设备延伸到第二网络设备的隧道上传输。 第一网络设备与可操作以映射和封装分组的系统通信，并提供穿过第二虚拟专用网络的覆盖。 本文还公开了一种装置和逻辑。
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公开(公告)号：US20160127192A1
公开(公告)日：2016-05-05
申请号：US14533975
申请日：2014-11-05
Applicant: CISCO TECHNOLOGY, INC.
IPC: H04L12/24 , H04L12/801 , H04L12/26
CPC classification number: H04L41/12 , H04L12/42 , H04L43/50 , H04L45/021 , H04L45/026 , H04L45/123 , H04L45/18 , H04L45/28
Abstract: In one embodiment, a method includes identifying a change in network topology at a network device, transmitting a test packet from the network device to determine if an adjacent network device located in a backup path has converged following the network topology change, and updating a forwarding information base at the network device in response to the network topology change if a response to the test packet indicates that the adjacent network device has converged. An apparatus and logic are also disclosed herein.
Abstract translation: 在一个实施例中，一种方法包括识别网络设备上的网络拓扑的变化，从网络设备发送测试分组，以确定位于备份路径中的相邻网络设备是否在网络拓扑变化之后已经收敛，并且更新转发 如果对测试分组的响应指示相邻网络设备已经收敛，则在网络设备处的信息库响应于网络拓扑变化。 本文还公开了一种装置和逻辑。
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Patent Agency Ranking
公开(公告)号：US20150003452A1
公开(公告)日：2015-01-01
申请号：US13930614
申请日：2013-06-28
Applicant: Cisco Technology, Inc.
Inventor： Jesper Skriver , Isidoros Kouvelas , Christian Cassar
IPC: H04L12/741
Abstract: In one embodiment, a device receives a payload encapsulated in an Internet Protocol (IP) transport header having a time-to-live (TTL) value, and decapsulates the payload while maintaining the TTL value. In response to determining that a destination of the payload is not attached to the device, the device may then re-encapsulate the payload in a new IP transport header with a new TTL value that is less than the maintained TTL value, and transmits the re-encapsulated payload toward the destination. In this manner, loops in overlay networks may be prevented based on eventual expiration of the TTL value of the IP transport header, accordingly.
Abstract translation: 在一个实施例中，设备接收封装在具有生存时间（TTL）值的因特网协议（IP）传输报头中的有效载荷，并且在保持TTL值的同时解封装有效载荷。 响应于确定有效载荷的目的地未附加到设备，则设备然后可以将新的有效载荷重新封装在具有小于所保持的TTL值的新TTL值的新IP传输报头中，并且将该重传 - 封装的有效载荷到目的地。 以这种方式，可以相应地基于IP传输报头的TTL值的最终到期来防止覆盖网络中的环路。
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公开(公告)号：US09253088B2
公开(公告)日：2016-02-02
申请号：US13930614
申请日：2013-06-28
Applicant: Cisco Technology, Inc.
Inventor： Jesper Skriver , Isidoros Kouvelas , Christian Cassar
IPC: H04L12/28 , H04L12/741 , H04L12/733
Abstract: In one embodiment, a device receives a payload encapsulated in an Internet Protocol (IP) transport header having a time-to-live (TTL) value, and decapsulates the payload while maintaining the TTL value. In response to determining that a destination of the payload is not attached to the device, the device may then re-encapsulate the payload in a new IP transport header with a new TTL value that is less than the maintained TTL value, and transmits the re-encapsulated payload toward the destination. In this manner, loops in overlay networks may be prevented based on eventual expiration of the TTL value of the IP transport header, accordingly.
Abstract translation: 在一个实施例中，设备接收封装在具有生存时间（TTL）值的因特网协议（IP）传输报头中的有效载荷，并且在保持TTL值的同时解封装有效载荷。 响应于确定有效载荷的目的地未附加到设备，则设备然后可以将新的有效载荷重新封装在具有小于所保持的TTL值的新TTL值的新IP传输报头中，并且将该重传 - 封装的有效载荷到目的地。 以这种方式，可以相应地基于IP传输报头的TTL值的最终到期来防止覆盖网络中的环路。
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公开(公告)号：US09503272B2
公开(公告)日：2016-11-22
申请号：US14209744
申请日：2014-03-13
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Fang Yang , Kathy Xia Ke , Isidoros Kouvelas , Christian Cassar
CPC classification number: H04L12/185
Abstract: In one embodiment, a method includes discovering at a first edge device in a first network that a multicast source has moved from the first network to a second network, the first edge device in communication through a core network with a plurality of edge devices belonging to a multicast group comprising the multicast source, transmitting from the first edge device to a second edge device in the second network, a join request for the multicast group comprising the multicast source at the second network, receiving multicast traffic for the multicast group at the first edge device on a transient multicast tree extending from the second edge device to the plurality of edge devices, and forwarding the multicast traffic to the plurality of edge devices. An apparatus and logic are also disclosed herein.
Abstract translation: 在一个实施例中，一种方法包括在第一网络中的第一边缘设备发现组播源已经从第一网络移动到第二网络，第一边缘设备通过核心网络与多个边缘设备属于 包括所述组播源的组播组，从所述第一边缘设备向所述第二网络中的第二边缘设备发送包括所述组播源在内的所述多播组的加入请求，所述多播组在所述第二网络处包括所述多播组， 在从第二边缘设备延伸到多个边缘设备的瞬时多播树上，将多播流量转发到多个边缘设备。 本文还公开了一种装置和逻辑。
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公开(公告)号：US09479433B1
公开(公告)日：2016-10-25
申请号：US14155190
申请日：2014-01-14
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Darrel Lewis , Gregg Schudel , John Mullooly , Isidoros Kouvelas , Jesper Skriver , Christian Cassar , Dino Farinacci , Fabio Maino
IPC: H04L12/715 , H04L12/24 , H04L12/911 , H04L12/723
CPC classification number: H04L12/4633 , H04L12/46 , H04L12/4641 , H04L12/66 , H04L45/50 , H04L47/825
Abstract: In one embodiment, a method includes receiving at a first network device in a first virtual private network, a packet destined for a second network device in communication with a second virtual private network, and transmitting the packet over the second network, wherein the packet is encapsulated for transmittal on a tunnel extending from the first network device to the second network device. The first network device is in communication with a system operable to map and encapsulate the packet and provide an overlay that traverses over the second virtual private network. An apparatus and logic are also disclosed herein.
Abstract translation: 在一个实施例中，一种方法包括在第一虚拟专用网络中的第一网络设备处接收目的地是与第二虚拟专用网络通信的第二网络设备的分组，以及通过所述第二网络发送所述分组，其中所述分组是 封装在从第一网络设备延伸到第二网络设备的隧道上传输。 第一网络设备与可操作以映射和封装分组的系统通信，并提供穿过第二虚拟专用网络的覆盖。 本文还公开了一种装置和逻辑。
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公开(公告)号：US09474040B2
公开(公告)日：2016-10-18
申请号：US14508907
申请日：2014-10-07
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Stewart Frederick Bryant , Christian Cassar , Willem Maria Verrydt
IPC: H04W64/00
CPC classification number: H04W64/00
Abstract: An example method for independently verifying a transit point in a network environment is provided and includes receiving, at a transit point in a packet network, at least two radio signals from corresponding different radio sources, receiving, at the transit point, a sampling request in an packet message, and transmitting in another packet message a sample of the at least two radio signals such that by comparing the sample with an expected sample, a location of the transit point is determined. The expected sample can comprise another sample of the at least two radio signals that would have been received by the transit point at an expected location at a time of receipt of the sampling request, and if the expected sample matches the sample, the transit point is determined to be at the expected location.
Abstract translation: 提供了用于独立地验证网络环境中的转接点的示例性方法，并且包括在分组网络中的转接点处接收来自相应的不同无线电源的至少两个无线电信号，在中转点处接收一个采样请求 分组消息，并且在另一分组消息中发送所述至少两个无线电信号的样本，使得通过将所述样本与预期样本进行比较来确定所述中转点的位置。 预期采样可以包括在接收采样请求时在预期位置处由转接点接收到的至少两个无线电信号的另一采样，并且如果预期采样与样本匹配，则转接点为 决定在预期的位置。
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