US 11,909,596 B2
Connections and accesses for hierarchical path computation element (PCE)
Huaimo Chen, Bolton, MA (US)
Assigned to Futurewei Technologies, Inc., Addison, TX (US)
Filed by Futurewei Technologies, Inc., Addison, TX (US)
Filed on Jul. 29, 2022, as Appl. No. 17/876,868.
Application 17/876,868 is a continuation of application No. 16/939,920, filed on Jul. 27, 2020, granted, now 11,405,283.
Application 16/939,920 is a continuation of application No. 15/602,243, filed on May 23, 2017, granted, now 10,728,098, issued on Jul. 28, 2020.
Claims priority of provisional application 62/359,077, filed on Jul. 6, 2016.
Prior Publication US 2022/0368597 A1, Nov. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 12/751 (2013.01); H04L 12/715 (2013.01); H04L 41/12 (2022.01); H04L 43/08 (2022.01); H04L 45/42 (2022.01); H04L 45/02 (2022.01)
CPC H04L 41/12 (2013.01) [H04L 43/08 (2013.01); H04L 45/42 (2013.01); H04L 45/02 (2013.01); H04L 45/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A path computation element (PCE) comprising:
a network interface for enabling communications over a network;
memory for storing executable instructions;
a processor configured to execute the executable instructions to:
establish communication between the PCE and at least one first child PCE, wherein the PCE is configured as a parent PCE to a first set of child PCEs comprising the at least one first child PCE, wherein each of the at least one first child PCE is responsible for a first domain in a set of first domains, and wherein the at least one first child PCE is configured as a second parent PCE to a second set of child PCEs comprising at least one second child PCE, wherein each of the at least one second child PCE is responsible for a second domain in a set of second domains;
receive domain connection information from the at least one first child PCE, wherein the domain connection information comprises a first set of domain connection information corresponding to the set of first domains; and
construct an abstract domain topology based on the domain connection information.