The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2022
Filed:
Feb. 28, 2019
Cisco Technology, Inc., San Jose, CA (US);
Mankamana Prasad Mishra, Dublin, CA (US);
Jayashree Subramanian, Cary, NC (US);
Stig Ingvar Venaas, Oakland, CA (US);
Rishabh Parekh, San Jose, CA (US);
Ravindran Rajarao, Fremont, CA (US);
CISCO TECHNOLOGY, INC., San Jose, CA (US);
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.