公开(公告)号：US10382217B1

公开(公告)日：2019-08-13

申请号：US15085321

申请日：2016-03-30

Applicant: Juniper Networks, Inc.

Inventor： Robert W. Kebler ,  Vikram Nagarajan ,  Sunil Kumar ,  Sanoj Kadavil Vivekanandan

IPC: H04L12/46 ,  H04L12/751 ,  H04L12/18

Abstract: In some examples, a method includes receiving, by a first ingress network device of a network, a source tree join route message from an egress network device of the network, the source tree join route message specifying a multicast source and a multicast group, and in response to receiving, by the first ingress network device, a source active auto-discovery route message from a second ingress network device of the network indicating that the second ingress network device has switched from using a shared multicast tree to using a shortest path tree to deliver multicast traffic from the multicast source, electing one of the first ingress network device or the second ingress network device as a single active forwarder for forwarding the multicast traffic received from the multicast source for the multicast group.

公开(公告)号：US20180191515A1

公开(公告)日：2018-07-05

申请号：US15396329

申请日：2016-12-30

Applicant: Juniper Networks, Inc.

Inventor： Sanoj Kadavil Vivekanandan ,  Robert W. Kebler ,  Vikram Nagarajan ,  Anish Peter

IPC: H04L12/18 ,  H04L12/46 ,  H04L29/12

CPC classification number: H04L12/185 ,  H04L12/1881 ,  H04L12/4641 ,  H04L61/6077

Abstract: Techniques are described for multicast flow prioritization in protocol independent multicast (PIM) networks with multicast flow limits. According to the disclosed techniques, once a router has reached its multicast flow limit, the router may preempt an installed lower priority multicast flow with a newly requested higher priority multicast flow. For example, if a maximum number of multicast flows are installed on the router, then, upon receiving a PIM join for a higher priority flow as compared to the installed flows, the router replaces one of the installed lower priority flows with the received higher priority flow. Furthermore, according to the disclosed techniques, priority values for multicast flows are consistent across a PIM domain and each of the routers within the PIM domain is configured to use the priority values to select a higher priority flow over a lower priority flow.

公开(公告)号：US20190081996A1

公开(公告)日：2019-03-14

申请号：US16160562

申请日：2018-10-15

Applicant: Juniper Networks, Inc.

Inventor： Robert W. Kebler ,  Vikram Nagarajan ,  Sunil Kumar ,  Sanoj Kadavil Vivekanandan

IPC: H04L29/06 ,  H04L12/18 ,  H04L12/761 ,  H04L12/911 ,  H04L12/751

Abstract: In some examples, a method includes receiving, by a first ingress network device for a network, a source tree join route message from an egress network device for the network, specifying a multicast source and a multicast group, and in response to receiving the source tree join route message, determining, by the ingress network device, whether the multicast source is multi-homed to the network via the first ingress network device and a second ingress network device for the network. The method includes, in response to determining that the multicast source is not multi-homed, forwarding traffic for the multicast source on an inclusive provider tunnel without initiating setup of a selective provider tunnel to the egress network device, and in response to determining that the multicast source is multi-homed, initiating setup of a selective provider tunnel to the egress network device and terminating forwarding multicast traffic on the inclusive provider tunnel.

公开(公告)号：US20170289217A1

公开(公告)日：2017-10-05

申请号：US15086897

申请日：2016-03-31

Applicant: Juniper Networks, Inc.

Inventor： Robert W. Kebler ,  Vikram Nagarajan ,  Sunil Kumar ,  Sanoj Kadavil Vivekanandan

IPC: H04L29/06 ,  H04L12/911 ,  H04L12/751

CPC classification number: H04L65/4076 ,  H04L12/1886 ,  H04L45/02 ,  H04L45/16 ,  H04L47/825

Abstract: In some examples, a method includes receiving, by a first ingress network device for a network, a source tree join route message from an egress network device for the network, specifying a multicast source and a multicast group, and in response to receiving the source tree join route message, determining, by the ingress network device, whether the multicast source is multi-homed to the network via the first ingress network device and a second ingress network device for the network. The method includes, in response to determining that the multicast source is not multi-homed, forwarding traffic for the multicast source on an inclusive provider tunnel without initiating setup of a selective provider tunnel to the egress network device, and in response to determining that the multicast source is multi-homed, initiating setup of a selective provider tunnel to the egress network device and terminating forwarding multicast traffic on the inclusive provider tunnel.

公开(公告)号：US10999090B2

公开(公告)日：2021-05-04

申请号：US15396329

申请日：2016-12-30

Applicant: Juniper Networks, Inc.

Inventor： Sanoj Kadavil Vivekanandan ,  Robert W. Kebler ,  Vikram Nagarajan ,  Anish Peter

IPC: H04L12/18 ,  H04L12/46 ,  H04L29/12

Abstract: Techniques are described for multicast flow prioritization in protocol independent multicast (PIM) networks with multicast flow limits. According to the disclosed techniques, once a router has reached its multicast flow limit, the router may preempt an installed lower priority multicast flow with a newly requested higher priority multicast flow. For example, if a maximum number of multicast flows are installed on the router, then, upon receiving a PIM join for a higher priority flow as compared to the installed flows, the router replaces one of the installed lower priority flows with the received higher priority flow. Furthermore, according to the disclosed techniques, priority values for multicast flows are consistent across a PIM domain and each of the routers within the PIM domain is configured to use the priority values to select a higher priority flow over a lower priority flow.

公开(公告)号：US10104139B2

公开(公告)日：2018-10-16

申请号：US15086897

申请日：2016-03-31

Applicant: Juniper Networks, Inc.

Inventor： Robert W. Kebler ,  Vikram Nagarajan ,  Sunil Kumar ,  Sanoj Kadavil Vivekanandan

IPC: H04L29/06 ,  H04L12/751 ,  H04L12/911 ,  H04L12/18 ,  H04L12/761

Abstract: In some examples, a method includes receiving, by a first ingress network device for a network, a source tree join route message from an egress network device for the network, specifying a multicast source and a multicast group, and in response to receiving the source tree join route message, determining, by the ingress network device, whether the multicast source is multi-homed to the network via the first ingress network device and a second ingress network device for the network. The method includes, in response to determining that the multicast source is not multi-homed, forwarding traffic for the multicast source on an inclusive provider tunnel without initiating setup of a selective provider tunnel to the egress network device, and in response to determining that the multicast source is multi-homed, initiating setup of a selective provider tunnel to the egress network device and terminating forwarding multicast traffic on the inclusive provider tunnel.