公开(公告)号：US09397924B2

公开(公告)日：2016-07-19

申请号：US13673341

申请日：2012-11-09

Applicant: AT&T Intellectual Property I, L.P.

Inventor： John Mulligan ,  Han Q. Nguyen ,  Samir Saad ,  Jacobus Van Der Merwe ,  Simon Zelingher

IPC: H04L12/751 ,  H04L12/759 ,  H04L12/721 ,  H04L12/24 ,  H04L12/727

CPC classification number: H04L45/08 ,  H04L41/0654 ,  H04L45/02 ,  H04L45/028 ,  H04L45/121 ,  H04L45/123

Abstract: Systems and methods are described that manage routing information in an IP network using extensible indexing and use the indexing to control the network. The indexing and associated controls apply to any router within the routing domain.

公开(公告)号：US08886830B2

公开(公告)日：2014-11-11

申请号：US13954514

申请日：2013-07-30

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Richard T. Kwapniewski ,  Han Q. Nguyen

IPC: G06F15/173 ,  H04L29/08 ,  H04L29/12

CPC classification number: H04L67/2842 ,  H04L29/12066 ,  H04L61/1511 ,  H04L67/1004 ,  H04L67/1023 ,  H04L67/1029

Abstract: A system includes a plurality of cache servers and a domain name server. Each of the cache servers is configured to respond to a content request. The plurality of cache servers is divided into a plurality of subsets and configured to respond to an anycast address for each subset to which the cache server belongs. The domain name server is configured to receive a request from a requestor for a cache server address, identify an anycast address for a largest available subset, and provide the anycast address of the largest available subset to the requestor.

Abstract translation: 系统包括多个缓存服务器和域名服务器。 每个缓存服务器被配置为响应内容请求。 多个高速缓存服务器被分成多个子集并且被配置为响应高速缓存服务器所属的每个子集的任播地址。 域名服务器被配置为从缓存服务器地址的请求者接收请求，识别最大可用子集的任播地址，并将最大可用子集的任播地址提供给请求者。

公开(公告)号：US20140289813A1

公开(公告)日：2014-09-25

申请号：US14297952

申请日：2014-06-06

Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.

Inventor： Han Q. Nguyen ,  Huajin Jeng ,  Douglas M. Nortz

IPC: H04L29/06

CPC classification number: H04L12/185 ,  G06F21/10 ,  G06F21/606 ,  G06Q10/06 ,  H04L12/1845 ,  H04L12/1886 ,  H04L63/10 ,  H04L63/107 ,  H04L63/20

Abstract: A content distribution network includes first and second controllers, and multicast enabled routers. The first controller is configured to select a multicast channel for distributing content, to determine that the content has a geographic restriction associated with a restricted area in the content distribution network, to link an exclusion policy for the content to the multicast channel while the multicast channel provides the content, and to deny a request for the content from a client system within the restricted area based on the exclusion policy. The second controller is configured to distribute the exclusion policy to the multicast enabled routers including a first router configured to store the exclusion policy, and to ignore a multicast join message from the client system within the restricted area based on the exclusion policy.

Abstract translation: 内容分发网络包括第一和第二控制器以及启用多播的路由器。 所述第一控制器被配置为选择用于分发内容的多播信道，以确定所述内容具有与所述内容分发网络中的受限区域相关联的地理限制，以将所述内容的排除策略链接到所述多播信道，而所述多播信道 提供内容，并且基于排除策略来拒绝来自限制区域内的客户端系统的内容的请求。 第二控制器被配置为将排除策略分发到启用多播的路由器，包括配置为存储排除策略的第一路由器，并且基于排除策略忽略来自限制区域内的客户端系统的多播加入消息。

公开(公告)号：US20130077470A1

公开(公告)日：2013-03-28

申请号：US13673341

申请日：2012-11-09

Applicant: AT&T Intellectual Property I, L.P.

Inventor： John Mulligan ,  Han Q. Nguyen ,  Samir Saad ,  Jacobus Van Der Merwe ,  Simon Zelingher

IPC: H04L12/56

CPC classification number: H04L45/08 ,  H04L41/0654 ,  H04L45/02 ,  H04L45/028 ,  H04L45/121 ,  H04L45/123

Abstract: Systems and methods are described that manage routing information in an IP network using extensible indexing and use the indexing to control the network. The indexing and associated controls apply to any router within the routing domain.

Abstract translation: 描述了使用可扩展索引来管理IP网络中的路由信息​​的系统和方法，并使用索引来控制网络。 索引和相关控件适用于路由域内的任何路由器。

公开(公告)号：US20190342423A1

公开(公告)日：2019-11-07

申请号：US16511930

申请日：2019-07-15

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Han Q. Nguyen ,  Sunil Maloo ,  Douglas M. Nortz

IPC: H04L29/08 ,  H04L12/26 ,  H04L12/18 ,  H04N21/643 ,  H04N21/6408 ,  H04N21/6405 ,  H04N21/6402 ,  H04N21/6375 ,  H04N21/63 ,  H04N21/262 ,  H04N21/24 ,  H04N21/84 ,  H04L12/801 ,  H04L29/12

Abstract: A content distribution network includes a first server in communication with an anycast server that provides content via a unicast signal, and with a multicast server that provides the content via a multicast signal. The first server is configured to receive a list of source addresses associated with the content, and to provide a metadata file including an anycast Internet protocol address of the anycast server from the list of source addresses as an Internet protocol address of the content in response to a first request for the content. When the number of client devices requesting the content exceeds a first threshold, the first server receives an updated list of sources including a multicast Internet protocol address of a multicast server, and provides the multicast Internet protocol address of the multicast server as the Internet protocol address of the content in the metadata file.

公开(公告)号：US10365899B2

公开(公告)日：2019-07-30

申请号：US15256675

申请日：2016-09-05

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Margaret Chiosi ,  Brian Dean Freeman ,  Han Q. Nguyen

IPC: H04L12/911 ,  G06F9/50 ,  H04L12/24 ,  H04L29/08 ,  G06F8/35 ,  G06F8/41 ,  G06F8/60

Abstract: Concepts and technologies are disclosed herein for providing and using a software defined network controller. A software defined network controller can be provided by a computing system that includes a processor. A service model that represents a service can be obtained. A network model that represents network resources that support the service can be obtained. Resources that support the service can be determined. Templates can be accessed to identify templates that relate to the resources. The templates identified can be assembled to obtain a template-based representation of the service. The template-based representation can be executed to determine if the service is ready for deployment.

公开(公告)号：US20180309677A1

公开(公告)日：2018-10-25

申请号：US16010766

申请日：2018-06-18

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Oliver Spatscheck ,  Han Q. Nguyen ,  Steven H. Nurenberg ,  Gregory J. Smith

IPC: H04L12/801 ,  H04L1/00 ,  H04L12/851 ,  H04L12/823 ,  H04L1/18 ,  H04L1/22 ,  H04L12/18

CPC classification number: H04L47/12 ,  H04L1/0041 ,  H04L1/0083 ,  H04L1/1812 ,  H04L1/22 ,  H04L12/18 ,  H04L47/11 ,  H04L47/24 ,  H04L47/32

Abstract: A network is configured to utilize available bandwidth to conduct bulk data transfers without substantially affecting the successful transmission of time-sensitive traffic in the network. In order to avoid this interference, the packets carrying data for bulk data transfers are associated with a low priority class such that the routers of the network will preferentially drop these packets over packets associated with the normal traffic of the network. As such, when the normal traffic peaks or there are link failures or equipment failures, the normal traffic is preferentially transmitted over the bulk-transfer traffic and thus the bulk-transfer traffic dynamically adapts to changes in the available bandwidth of the network. Further, to reduce the impact of dropped packets for the bulk-transfer traffic, the packets of the bulk-transfer traffic are encoded at or near the source component using a loss-resistant transport protocol so that the dropped packets can be reproduced at a downstream link.

公开(公告)号：US20170093686A1

公开(公告)日：2017-03-30

申请号：US14863516

申请日：2015-09-24

Applicant: AT&T Intellectual Property I, L.P.

Inventor： James Uttaro ,  Han Q. Nguyen

IPC: H04L12/755 ,  H04L12/741 ,  H04L12/733 ,  H04L29/06

CPC classification number: H04L45/021 ,  H04L45/02 ,  H04L45/122 ,  H04L45/64 ,  H04L45/745 ,  H04L65/4076

Abstract: Concepts and technologies are disclosed herein for management of forwarding tables at edge routers. A processor that executes a software defined networking controller can select an edge router associated with a networking environment. The edge router can access or use a forwarding table. The processor can obtain routing information associated with the edge router. The routing information can include forwarding table contents associated with the forwarding table and next hop information that can indicate communication paths associated with the edge router. The processor can analyze the routing information to determine next hops associated with the edge router, generate a next hop graph that represents the next hops, and initiate updating of the forwarding table such that forwarding table only includes data that corresponds to the next hops.

公开(公告)号：US09516139B2

公开(公告)日：2016-12-06

申请号：US14848898

申请日：2015-09-09

Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.

Inventor： Han Q. Nguyen ,  Sunil Maloo ,  Douglas M. Nortz

IPC: G06F15/16 ,  H04L29/08 ,  H04L12/18 ,  H04L29/12 ,  H04L12/801 ,  H04N21/24 ,  H04N21/262 ,  H04N21/63 ,  H04N21/6375 ,  H04N21/6402 ,  H04N21/6405 ,  H04N21/6408 ,  H04N21/643 ,  H04N21/84 ,  H04L12/26

CPC classification number: H04L67/322 ,  H04L12/18 ,  H04L43/0882 ,  H04L47/15 ,  H04L47/29 ,  H04L61/2069 ,  H04L61/609 ,  H04N21/2408 ,  H04N21/26291 ,  H04N21/632 ,  H04N21/6375 ,  H04N21/6402 ,  H04N21/6405 ,  H04N21/6408 ,  H04N21/64322 ,  H04N21/84

Abstract: A content distribution network includes a first server in communication with an anycast server that provides content via a unicast signal, and with a multicast server that provides the content via a multicast signal. The first server is configured to receive a list of source addresses associated with the content, and to provide a metadata file including an anycast Internet protocol address of the anycast server from the list of source addresses as an Internet protocol address of the content in response to a first request for the content. When the number of client devices requesting the content exceeds a first threshold, the first server receives an updated list of sources including a multicast Internet protocol address of a multicast server, and provides the multicast Internet protocol address of the multicast server as the Internet protocol address of the content in the metadata file.

公开(公告)号：US09148372B2

公开(公告)日：2015-09-29

申请号：US13785489

申请日：2013-03-05

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Thomas Bradley Scholl ,  Han Q. Nguyen

IPC: H04L12/28 ,  H04L12/741 ,  H04L12/751 ,  H04L12/715 ,  H04L12/723

CPC classification number: H04L45/74 ,  H04L45/02 ,  H04L45/04 ,  H04L45/50

Abstract: Example methods, apparatus and articles of manufacture to manipulate packet routing are disclosed. A disclosed example method includes receiving a first route advertisement from a first provider edge router, the first route advertisement including next-hop routing information associated with a destination and a label associated with an interface of the first provider edge router; modifying the next-hop routing information to form first modified next-hop routing information, the first modified next-hop routing information to redirect a packet addressed to the destination; and sending a second route advertisement to a second provider edge router, the second route advertisement including the first modified next-hop routing information and the label.

Abstract translation: 公开了用于操纵分组路由的示例性方法，装置和制造工具。 所公开的示例方法包括从第一提供商边缘路由器接收第一路由通告，所述第一路由通告包括与目的地相关联的下一跳路由信息和与所述第一提供商边缘路由器的接口相关联的标签; 修改下一跳路由信息以形成第一修改的下一跳路由信息，所述第一修改的下一跳路由信息用于重定向寻址到所述目的地的分组; 并向第二提供商边缘路由器发送第二路由通告，所述第二路由通告包括所述第一修改的下一跳路由信息和所述标签。