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:
Feb. 23, 2021
Filed:
May. 14, 2018
Applicant:
At&t Intellectual Property I, L.p., Atlanta, GA (US);
Inventors:
Guangzhi Li, Kearny, NJ (US);
Dongmei Wang, Kearny, NJ (US);
Assignee:
AT&T Intellectual Property I, L.P., Atlanta, GA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/703 (2013.01); H04L 12/42 (2006.01); H04L 12/751 (2013.01); H04L 12/721 (2013.01); H04L 12/735 (2013.01); H04L 12/761 (2013.01); H04L 12/707 (2013.01); H04L 12/18 (2006.01); H04L 12/24 (2006.01);
U.S. Cl.
CPC ...
H04L 45/28 (2013.01); H04L 12/18 (2013.01); H04L 12/42 (2013.01); H04L 41/0654 (2013.01); H04L 45/02 (2013.01); H04L 45/12 (2013.01); H04L 45/128 (2013.01); H04L 45/16 (2013.01); H04L 45/22 (2013.01); H04L 45/1283 (2013.01); H04L 2212/00 (2013.01);
Abstract
Disclosed herein are systems, methods, and computer readable media for modifying IP backbone link weights such that multicast traffic and unicast traffic will not travel on a same path between nodes. The method comprises assigning link weights to nodes within an IP backbone such that multicast forwarding paths and unicast forwarding paths are failure disjoint, and delivering undelivered multicast packets using IP unicast encapsulation to the loopback address of next hop router on a multicast tree upon link/interface failure.