公开(公告)号：US20230102202A1

公开(公告)日：2023-03-30

申请号：US18061584

申请日：2022-12-05

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

Inventor： Penn L. Pfautz ,  Huajin Jeng

IPC: H04L47/24 ,  H04L47/2483 ,  H04L47/2441 ,  H04L47/62 ,  H04L47/2425

Abstract: Methods, apparatus and articles of manufacture for advertising network layer reachability information specifying a quality of service for an identified network flow are disclosed. Example methods disclosed herein to specify quality of service for network flows include receiving network layer reachability information including a first quality of service class specified for a first network flow, the network layer reachability information having been advertised by a first network element that is to receive the first network flow. Such example methods can also include updating an incoming packet determined to belong to the first network flow to indicate that the incoming packet belongs to the first quality of service class, the incoming packet being received from a second network element. Such example methods can further include, after updating the incoming packet, routing the incoming packet towards the first network element.

公开(公告)号：US10951535B2

公开(公告)日：2021-03-16

申请号：US16798599

申请日：2020-02-24

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

Inventor： Penn L. Pfautz ,  Huajin Jeng

IPC: H04L12/851 ,  H04L12/863

Abstract: Methods, apparatus and articles of manufacture for advertising network layer reachability information specifying a quality of service for a network flow are disclosed. Example network devices disclosed herein construct a packet filter based on a flow specification and a first quality of service advertised by a destination device for a first network flow, the packet filter to associate a default quality of service with a first incoming packet not associated with any of one or more advertised network flows represented in the packet filter. Disclosed example network devices also set, based on the packet filter, one or more bits of a second incoming packet that belongs to the first network flow to a value representative of the first quality of service. Disclosed example network devices further cause the second incoming packet to be routed towards the destination device based on the first quality of service.

公开(公告)号：US10313239B2

公开(公告)日：2019-06-04

申请号：US15970566

申请日：2018-05-03

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

Inventor： Huajin Jeng ,  Pravin Kumar Johri ,  Han Nguyen ,  Samir Saad

IPC: H04L12/28 ,  H04L12/741 ,  H04L12/761 ,  H04L12/723 ,  H04L12/18 ,  H04L12/26 ,  H04J1/16

Abstract: Methods, apparatus, and articles of manufacture to provide a multicast virtual private network (MVPN) are disclosed. An example method to transmit multicast data over a communication network includes receiving, at a first machine, a multicast data packet from an ingress provider edge router of the communication network, the multicast data packet associated with a multicast route, and transmitting a first replication of the multicast data packet from the first machine to a second machine via a first unicast path. The first replication of the multicast data packet includes a first label provided by the second machine to identify the multicast route in the second machine. Example methods further include receiving the first replication of the multicast data packet at the second machine via the first unicast path, and replicating the multicast data packet from the second machine to an egress provider edge router of the communication network.

公开(公告)号：US20190075054A1

公开(公告)日：2019-03-07

申请号：US16179638

申请日：2018-11-02

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

Inventor： Penn L. Pfautz ,  Huajin Jeng

IPC: H04L12/851 ,  H04L12/863

Abstract: Methods, apparatus and articles of manufacture for advertising network layer reachability information specifying a quality of service for a network flow are disclosed. An example first network device disclosed herein is to advertise a first flow specification and a first quality of service for a first network flow to be received by the first network device, and access a second flow specification and a second quality of service advertised by a second network device for a second network flow that is to be received by the second network device. The example first network device is also to update bits of an incoming packet that belongs to the second network flow to determine an updated incoming packet, and assign the updated incoming packet to a routing queue corresponding to the second quality of service to cause the updated incoming packet to be routed towards the second network device.

公开(公告)号：US20180054390A1

公开(公告)日：2018-02-22

申请号：US15799630

申请日：2017-10-31

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

Inventor： Penn L. Pfautz ,  Huajin Jeng

IPC: H04L12/851 ,  H04L12/863

CPC classification number: H04L47/24 ,  H04L47/2433 ,  H04L47/2441 ,  H04L47/2483 ,  H04L47/6215

Abstract: Methods, apparatus and articles of manufacture for advertising network layer reachability information specifying a quality of service for a network flow are disclosed. Example methods disclosed herein include advertising a first flow specification and a first quality of service for a first network flow to be received by a first network element, and constructing a packet filter for a second network flow based on a second flow specification and a second quality of service advertised by a second network element that is to receive the second network flow. Disclosed example methods also include adjusting, based on the packet filter, bits of an incoming packet determined to belong to the second network flow to determine an updated incoming packet, and assigning the updated incoming packet to a routing queue corresponding to the second quality of service to cause the updated incoming packet to be routed towards the second network element.

公开(公告)号：US20160013949A1

公开(公告)日：2016-01-14

申请号：US14860261

申请日：2015-09-21

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

Inventor： Pravin Kumar Johri ,  Huajin Jeng ,  Samir Saad

IPC: H04L12/18 ,  H04L12/761

CPC classification number: H04L12/18 ,  H04L12/1854 ,  H04L45/16

Abstract: Example methods disclosed herein include registering a first leaf node to receive multicast data from a source via a first network node in response to receiving, from the first leaf node, a first message addressed to an anycast address, the anycast addressed being assigned to the first network node to associate the first network node with a second hierarchical level of a replication hierarchy. The disclosed example methods also include receiving the multicast data from a second network node associated with a first hierarchical level of the replication hierarchy. The disclosed example methods further include, after registering the first leaf node with the first network node, replicating the multicast data to generate copies of the multicast data to be transmitted via respective unicast paths to respective ones of a plurality of leaf nodes, including the first leaf node, registered with the first network node to receive the multicast data.

Abstract translation: 响应于从第一叶节点接收寻址到任播地址的第一消息，所述第一叶节点经由第一网络节点从源接收多播数据以从源接收多播数据，所述第一叶节点被分配给第一叶节点 网络节点将第一网络节点与复制层次结构的第二层级相关联。 所公开的示例方法还包括从与复制层次结构的第一层级相关联的第二网络节点接收多播数据。 所公开的示例方法还包括在将第一叶节点与第一网络节点注册之后，复制多播数据以生成要经由各个单播路径发送的多播数据的副本到多个叶节点中的相应的叶节点，包括第一 叶节点，注册到第一个网络节点接收组播数据。

公开(公告)号：US10735214B2

公开(公告)日：2020-08-04

申请号：US16036332

申请日：2018-07-16

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

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

IPC: H04L12/18 ,  G06F21/10 ,  G06F21/60 ,  G06Q10/06 ,  H04L29/06

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.

公开(公告)号：US20180254988A1

公开(公告)日：2018-09-06

申请号：US15970566

申请日：2018-05-03

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

Inventor： Huajin Jeng ,  Pravin Kumar Johri ,  Han Nguyen ,  Samir Saad

IPC: H04L12/741 ,  H04L12/723 ,  H04L12/761 ,  H04L12/18 ,  H04L12/26

CPC classification number: H04L45/745 ,  H04L12/18 ,  H04L12/1836 ,  H04L43/10 ,  H04L45/16 ,  H04L45/50

Abstract: Methods, apparatus, and articles of manufacture to provide a multicast virtual private network (MVPN) are disclosed. An example method to transmit multicast data over a communication network includes receiving, at a first machine, a multicast data packet from an ingress provider edge router of the communication network, the multicast data packet associated with a multicast route, and transmitting a first replication of the multicast data packet from the first machine to a second machine via a first unicast path. The first replication of the multicast data packet includes a first label provided by the second machine to identify the multicast route in the second machine. Example methods further include receiving the first replication of the multicast data packet at the second machine via the first unicast path, and replicating the multicast data packet from the second machine to an egress provider edge router of the communication network.

公开(公告)号：US10027497B2

公开(公告)日：2018-07-17

申请号：US15152932

申请日：2016-05-12

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

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

IPC: H04L12/28 ,  H04L12/18 ,  G06F21/10 ,  G06F21/60 ,  G06Q10/06 ,  H04L29/06

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.

公开(公告)号：US09338101B2

公开(公告)日：2016-05-10

申请号：US13707089

申请日：2012-12-06

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

Inventor： Penn L. Pfautz ,  Huajin Jeng

IPC: H04L1/00 ,  H04L12/851

CPC classification number: H04L47/24 ,  H04L47/2433 ,  H04L47/2441 ,  H04L47/2483 ,  H04L47/6215

Abstract: Methods, apparatus and articles of manufacture for advertising network layer reachability information specifying a quality of service for an identified network flow are disclosed. Example methods disclosed herein to specify quality of service for network flows include receiving network layer reachability information including a first quality of service class specified for a first network flow, the network layer reachability information having been advertised by a first network element that is to receive the first network flow. Such example methods can also include updating an incoming packet determined to belong to the first network flow to indicate that the incoming packet belongs to the first quality of service class, the incoming packet being received from a second network element. Such example methods can further include, after updating the incoming packet, routing the incoming packet towards the first network element.

Abstract translation: 公开了用于指定用于所识别的网络流的服务质量的广告网络层可达性信息的方法，装置和制品。 本文公开的用于指定网络流的服务质量的示例方法包括：接收包括为第一网络流指定的第一服务质量类别的网络层可达性信息，所述网络层可达性信息已被第一网元发送，以接收 第一网络流。 这样的示例性方法还可以包括更新确定属于第一网络流的输入分组，以指示输入分组属于第一服务质量类别，从第二网络元件接收输入分组。 这样的示例方法还可以包括，在更新输入分组之后，将输入分组路由到第一网络元件。