US 12,438,779 B2
Framework for temporal label switched path tunnel services
Huaimo Chen, Bolton, MA (US)
Assigned to Futurewei Technologies, Inc., Addison, TX (US)
Filed by Futurewei Technologies, Inc., Plano, TX (US)
Filed on Sep. 13, 2021, as Appl. No. 17/473,937.
Application 17/473,937 is a continuation of application No. 16/819,952, filed on Mar. 16, 2020, granted, now 11,121,975.
Application 16/819,952 is a continuation of application No. 15/269,098, filed on Sep. 19, 2016, granted, now 10,715,447, issued on Jul. 14, 2020.
Claims priority of provisional application 62/242,172, filed on Oct. 15, 2015.
Prior Publication US 2021/0409332 A1, Dec. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 47/00 (2022.01); H04L 12/46 (2006.01); H04L 41/0897 (2022.01); H04L 41/122 (2022.01); H04L 45/02 (2022.01); H04L 47/10 (2022.01); H04L 47/125 (2022.01); H04L 47/724 (2022.01); H04L 47/78 (2022.01); H04L 49/253 (2022.01)
CPC H04L 41/0897 (2022.05) [H04L 12/4633 (2013.01); H04L 41/122 (2022.05); H04L 45/04 (2013.01); H04L 47/125 (2013.01); H04L 47/18 (2013.01); H04L 47/724 (2013.01); H04L 47/781 (2013.01); H04L 49/254 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for establishing a temporal label switched path (LSP) implemented in a software defined network (SDN) controller in a network, comprising:
receiving, at the SDN controller, a path request for the temporal LSP, the path request identifying a time interval defining an LSP creation time and tear down time and a set of constraints;
computing a path for the temporal LSP that satisfies the time interval and the set of constraints based on traffic engineering information obtained from a first database, the temporal LSP being scheduled for carrying traffic in the time interval that crosses multiple domains and is computed in accordance with communications with a second controller that is responsible for a second domain of the multiple domains;
sending, to an ingress node of the temporal LSP in the network, a single message to set up the temporal LSP at the defined creation time and to tear down at the defined tear down time, the temporal LSP at an end of the time interval identified in the path request; and
setting up and tearing down the temporal LSP based on the single message.