公开(公告)号：US20200280455A1

公开(公告)日：2020-09-03

申请号：US16289455

申请日：2019-02-28

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Jayashree Subramanian ,  Stig Ingvar Venaas ,  Rishabh Parekh ,  Ravindran Rajarao

IPC: H04L12/18 ,  H04L12/773 ,  H04L12/761

Abstract: In an example method for redundant multicast trees with fast recovery, a protocol independent multicast (PIM) backup designated router (BDR) can receive a request from a host to join a multicast group associated with a source; send to a next hop a PIM join message identifying an address of the PIM BDR and identifying the PIM join message as a backup PIM join; receive, from a PIM router along a path to/from the source, a unicast message sent to the address which identifies a second address associated with the PIM router; store the second address and a route associated with the unicast message; in response to a designated router migration trigger, set to blocking a backup multicast tree state associated with the source and multicast group; and send, to the PIM router, a unicast message including instructions to set to blocking a backup multicast tree state at the PIM router.

公开(公告)号：US20220173919A1

公开(公告)日：2022-06-02

申请号：US17671807

申请日：2022-02-15

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Jayashree Subramanian ,  Stig Ingvar Venaas ,  Rishabh Parekh ,  Ravindran Rajarao

IPC: H04L12/18 ,  H04L45/16 ,  H04L45/60

Abstract: In an example method for redundant multicast trees with fast recovery, a protocol independent multicast (PIM) backup designated router (BDR) can receive a request from a host to join a multicast group associated with a source; send to a next hop a PIM join message identifying an address of the PIM BDR and identifying the PIM join message as a backup PIM join; receive, from a PIM router along a path to/from the source, a unicast message sent to the address which identifies a second address associated with the PIM router; store the second address and a route associated with the unicast message; in response to a designated router migration trigger, set to blocking a backup multicast tree state associated with the source and multicast group; and send, to the PIM router, a unicast message including instructions to set to blocking a backup multicast tree state at the PIM router.

公开(公告)号：US11716216B2

公开(公告)日：2023-08-01

申请号：US17671807

申请日：2022-02-15

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Jayashree Subramanian ,  Stig Ingvar Venaas ,  Rishabh Parekh ,  Ravindran Rajarao

IPC: H04L12/18 ,  H04L45/16 ,  H04L45/60

CPC classification number: H04L12/185 ,  H04L45/16 ,  H04L45/60

Abstract: In an example method for redundant multicast trees with fast recovery, a protocol independent multicast (PIM) backup designated router (BDR) can receive a request from a host to join a multicast group associated with a source; send to a next hop a PIM join message identifying an address of the PIM BDR and identifying the PIM join message as a backup PIM join; receive, from a PIM router along a path to/from the source, a unicast message sent to the address which identifies a second address associated with the PIM router; store the second address and a route associated with the unicast message; in response to a designated router migration trigger, set to blocking a backup multicast tree state associated with the source and multicast group; and send, to the PIM router, a unicast message including instructions to set to blocking a backup multicast tree state at the PIM router.

公开(公告)号：US11296899B2

公开(公告)日：2022-04-05

申请号：US16289455

申请日：2019-02-28

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Jayashree Subramanian ,  Stig Ingvar Venaas ,  Rishabh Parekh ,  Ravindran Rajarao

IPC: H04L12/18 ,  H04L12/761 ,  H04L12/773 ,  H04L45/16 ,  H04L45/60

Abstract: In an example method for redundant multicast trees with fast recovery, a protocol independent multicast (PIM) backup designated router (BDR) can receive a request from a host to join a multicast group associated with a source; send to a next hop a PIM join message identifying an address of the PIM BDR and identifying the PIM join message as a backup PIM join; receive, from a PIM router along a path to/from the source, a unicast message sent to the address which identifies a second address associated with the PIM router; store the second address and a route associated with the unicast message; in response to a designated router migration trigger, set to blocking a backup multicast tree state associated with the source and multicast group; and send, to the PIM router, a unicast message including instructions to set to blocking a backup multicast tree state at the PIM router.