公开(公告)号：US09781035B2

公开(公告)日：2017-10-03

申请号：US14842085

申请日：2015-09-01

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Gunter Johan Van de Velde ,  William Mark Townsley ,  Ole Troan ,  Keyur P. Patel

IPC: H04L12/28 ,  H04L12/749 ,  H04L12/46 ,  H04L12/66 ,  H04L29/12 ,  H04L12/715 ,  H04L12/751

CPC classification number: H04L45/741 ,  H04L12/4633 ,  H04L12/66 ,  H04L45/02 ,  H04L45/04 ,  H04L61/251 ,  H04L61/2592

Abstract: A method is provided in one particular example and may include obtaining routing information for a plurality of Internet Protocol (IP) addresses in a first network that natively supports a first Internet protocol, the routing information for the plurality of IP addresses in the first network further comprising an additional IP address in the first network and an indication that the additional IP address in the first network is to be used as a tunnel endpoint within the first network for receiving data destined to any of the plurality of IP addresses in the first network; and sending data destined to any one of the plurality of IP addresses in the first network to the additional IP address in the first network.

公开(公告)号：US10038766B2

公开(公告)日：2018-07-31

申请号：US15148294

申请日：2016-05-06

Applicant: Cisco Technology, Inc.

Inventor： Pierre Pfister ,  Ole Troan ,  W. Mark Townsley

IPC: H04J3/24 ,  H04L29/08 ,  H04L29/12 ,  H04L12/747

CPC classification number: H04L69/324 ,  H04L45/742 ,  H04L61/2592 ,  H04L67/2842 ,  H04L2212/00

Abstract: In one embodiment, a decapsulating network device receives a plurality of encapsulated packet fragments of an original packet, and decapsulates them into respective decapsulated packet fragments. The decapsulating network device caches an inner header of the original packet from one of the decapsulated packet fragments, and in response to caching the inner header, and for each particular decapsulated packet fragment as it is received and decapsulated: prepends the inner header and fragmentation information to the particular decapsulated packet fragment; and forwards the particular decapsulated packet fragment with the prepended inner header and fragmentation information from the decapsulating network device toward a destination of the original packet.

公开(公告)号：US08917737B2

公开(公告)日：2014-12-23

申请号：US14056659

申请日：2013-10-17

Applicant: Cisco Technology, Inc.

Inventor： Hemant Singh ,  William Beebee, Jr. ,  Ralph Droms ,  Ole Troan

IPC: H04L12/28 ,  H04L12/24 ,  H04L29/12

CPC classification number: H04L41/0803 ,  H04L29/12226 ,  H04L41/0816 ,  H04L61/2015 ,  H04L61/6059

Abstract: Techniques for automatically identifying an edge-facing router in a network are provided. In one technique, a DHCP message is obtained at a router of a subscriber network. An options field of the DHCP message is identified. The options field of the DHCP message is analyzed to determine whether data in the options field indicates that first router is SP-facing. If it is determined that the router is an SP-facing router, then identification data that identifies the router as an SP-facing router is stored.

Abstract translation: 提供了一种用于自动识别网络中边缘路由器的技术。 在一种技术中，在订户网络的路由器处获得DHCP消息。 识别DHCP消息的选项字段。 分析DHCP消息的选项字段以确定选项字段中的数据是否指示第一个路由器是面向SP的。 如果确定路由器是面向SP的路由器，则存储将路由器标识为面向SP的路由器的标识数据。

公开(公告)号：US20170324849A1

公开(公告)日：2017-11-09

申请号：US15148294

申请日：2016-05-06

Applicant: Cisco Technology, Inc.

Inventor： Pierre Pfister ,  Ole Troan ,  W. Mark Townsley

IPC: H04L29/08 ,  H04L29/12 ,  H04L12/747

CPC classification number: H04L69/324 ,  H04L45/742 ,  H04L61/2592 ,  H04L67/2842 ,  H04L2212/00

Abstract: In one embodiment, a decapsulating network device receives a plurality of encapsulated packet fragments of an original packet, and decapsulates them into respective decapsulated packet fragments. The decapsulating network device caches an inner header of the original packet from one of the decapsulated packet fragments, and in response to caching the inner header, and for each particular decapsulated packet fragment as it is received and decapsulated: prepends the inner header and fragmentation information to the particular decapsulated packet fragment; and forwards the particular decapsulated packet fragment with the prepended inner header and fragmentation information from the decapsulating network device toward a destination of the original packet.

公开(公告)号：US20140044012A1

公开(公告)日：2014-02-13

申请号：US14056659

申请日：2013-10-17

Applicant: Cisco Technology, Inc.

Inventor： Hemant Singh ,  William Beebee, JR. ,  Ralph Droms ,  Ole Troan

IPC: H04L12/24

CPC classification number: H04L41/0803 ,  H04L29/12226 ,  H04L41/0816 ,  H04L61/2015 ,  H04L61/6059

Abstract: Techniques for automatically identifying an edge-facing router in a network are provided. In one technique, a DHCP message is obtained at a router of a subscriber network. An options field of the DHCP message is identified. The options field of the DHCP message is analyzed to determine whether data in the options field indicates that first router is SP-facing. If it is determined that the router is an SP-facing router, then identification data that identifies the router as an SP-facing router is stored.

Abstract translation: 提供了一种用于自动识别网络中边缘路由器的技术。 在一种技术中，在订户网络的路由器处获得DHCP消息。 识别DHCP消息的选项字段。 分析DHCP消息的选项字段以确定选项字段中的数据是否指示第一个路由器是面向SP的。 如果确定路由器是面向SP的路由器，则存储将路由器标识为面向SP的路由器的标识数据。

公开(公告)号：US20150372913A1

公开(公告)日：2015-12-24

申请号：US14842085

申请日：2015-09-01

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Gunter Johan Van de Velde ,  William Mark Townsley ,  Ole Troan ,  Keyur P. Patel

IPC: H04L12/56 ,  H04L12/66 ,  H04L29/12

CPC classification number: H04L45/741 ,  H04L12/4633 ,  H04L12/66 ,  H04L45/02 ,  H04L45/04 ,  H04L61/251 ,  H04L61/2592

Abstract: A method is provided in one particular example and may include obtaining routing information for a plurality of Internet Protocol (IP) addresses in a first network that natively supports a first Internet protocol, the routing information for the plurality of IP addresses in the first network further comprising an additional IP address in the first network and an indication that the additional IP address in the first network is to be used as a tunnel endpoint within the first network for receiving data destined to any of the plurality of IP addresses in the first network; and sending data destined to any one of the plurality of IP addresses in the first network to the additional IP address in the first network.

Abstract translation: 在一个特定示例中提供了一种方法，并且可以包括获得本地支持第一互联网协议的第一网络中的多个因特网协议（IP）地址的路由信息​​，第一网络中的多个IP地址的路由信息​​进一步 包括第一网络中的附加IP地址以及指示第一网络中的附加IP地址将被用作第一网络内的隧道端点，用于接收去往第一网络中的多个IP地址中的任一个的数据; 以及将发往第一网络中的多个IP地址中的任一个的数据发送到第一网络中的附加IP地址。

公开(公告)号：US09191318B1

公开(公告)日：2015-11-17

申请号：US13872777

申请日：2013-04-29

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Gunter Johan Van de Velde ,  William Mark Townsley ,  Ole Troan ,  Keyur P. Patel

IPC: H04L12/28 ,  H04L12/56

CPC classification number: H04L45/741 ,  H04L12/4633 ,  H04L12/66 ,  H04L45/02 ,  H04L45/04 ,  H04L61/251 ,  H04L61/2592

Abstract: A method is provided in one particular example and may include obtaining routing information for a natively supported Internet protocol of a first network that uses a first routing policy; identifying a route with a tunnel endpoint using the routing information, where the tunnel endpoint supports transitioning between a plurality of Internet protocols; generating tunnel information for the route; and sending the route and the tunnel information to a network element in a second network that uses a second routing policy.

Abstract translation: 在一个特定示例中提供了一种方法，并且可以包括获得使用第一路由策略的第一网络的本地支持的因特网协议的路由信息​​; 使用所述路由信息来识别具有隧道端点的路由，其中​​所述隧道端点支持在多个因特网协议之间转换; 生成路由的隧道信息; 以及将路由和隧道信息发送到使用第二路由策略的第二网络中的网元。