公开(公告)号：US20190280974A1

公开(公告)日：2019-09-12

申请号：US16425613

申请日：2019-05-29

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

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

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

Abstract: Methods, apparatus, and articles of manufacture to provide a multicast virtual private network (MVPN) are disclosed. Example methods to transmit multicast data in a network disclosed herein include monitoring, with a first network node, a multicast data flow to determine a characteristic for triggering a switch from a first logical topology for the multicast data flow to a second logical topology for the multicast data flow. Disclosed example methods also include, after the switch to the second logical topology, accessing a multicast data packet associated with a first multicast route generated for the multicast data flow from a second network node, and transmitting a first replication of the multicast data packet to a third network node via a unicast path, the first replication of the multicast data packet to include a first label provided by the third network node to identify the first multicast route.

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：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：US09800421B2

公开(公告)日：2017-10-24

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.

公开(公告)号：US20160080264A1

公开(公告)日：2016-03-17

申请号：US14954535

申请日：2015-11-30

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

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

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

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: determining an upstream hop of a multicast transmission based on a received hierarchical ingress replication route; storing a downstream hop and the upstream hop of the multicast transmission in a multicast routing table; monitoring the multicast transmission occurring via an area border router; in response to detecting at least one of a) a threshold fan-out of the multicast transmission or b) a threshold data rate from a source of the multicast transmission, converting a logical topology of the multicast transmission; and in response to receiving a multicast data packet of the multicast transmission, replicating the multicast data packet with the processor based on the downstream hop.

Abstract translation: 公开了提供组播虚拟专用网（MVPN）的方法，装置和制造。 一种通过通信网络传输组播数据的示例方法包括：基于接收到的分级入侵复制路由确定组播传输的上行跳数; 将组播传输的下游跳和上游跳存储在组播路由表中; 监视通过区域边界路由器发生的组播传输; 响应于检测到a）所述多播传输的阈值扇出中的至少一个或b）来自所述多播传输源的阈值数据速率，转换所述多播传输的逻辑拓扑; 并且响应于接收到所述多播传输的多播数据分组，基于所述下游跳与所述处理器复制所述多播数据分组。

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：US10833989B2

公开(公告)日：2020-11-10

申请号：US16425613

申请日：2019-05-29

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. Example methods to transmit multicast data in a network disclosed herein include monitoring, with a first network node, a multicast data flow to determine a characteristic for triggering a switch from a first logical topology for the multicast data flow to a second logical topology for the multicast data flow. Disclosed example methods also include, after the switch to the second logical topology, accessing a multicast data packet associated with a first multicast route generated for the multicast data flow from a second network node, and transmitting a first replication of the multicast data packet to a third network node via a unicast path, the first replication of the multicast data packet to include a first label provided by the third network node to identify the first multicast route.

公开(公告)号：US09979646B2

公开(公告)日：2018-05-22

申请号：US15600332

申请日：2017-05-19

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

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：US20170257317A1

公开(公告)日：2017-09-07

申请号：US15600332

申请日：2017-05-19

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

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

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

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：US09686196B2

公开(公告)日：2017-06-20

申请号：US14954535

申请日：2015-11-30

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 ,  H04L12/26 ,  H04J1/16 ,  H04L12/18

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: determining an upstream hop of a multicast transmission based on a received hierarchical ingress replication route; storing a downstream hop and the upstream hop of the multicast transmission in a multicast routing table; monitoring the multicast transmission occurring via an area border router; in response to detecting at least one of a) a threshold fan-out of the multicast transmission or b) a threshold data rate from a source of the multicast transmission, converting a logical topology of the multicast transmission; and in response to receiving a multicast data packet of the multicast transmission, replicating the multicast data packet with the processor based on the downstream hop.