US 11,722,400 B2
Centralized approach to SR-TE paths with bandwidth guarantee using a single SID
Muthurajah Sivabalan, Kanata (CA); Sami Boutros, Union City, CA (US); and Cengiz Alaettinoglu, Sherman Oaks, CA (US)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Nov. 8, 2021, as Appl. No. 17/521,073.
Prior Publication US 2023/0146226 A1, May 11, 2023
Int. Cl. H04L 12/66 (2006.01); H04L 45/16 (2022.01); H04L 45/48 (2022.01)
CPC H04L 45/16 (2013.01) [H04L 45/48 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable medium having instructions stored thereon for programming a processing device to perform steps of:
determining a Multi-Point to Point (MP2P) tree from a plurality of source nodes to a destination node in a Segment Routing network, wherein the plurality of source nodes are sending traffic with guaranteed bandwidth requirements to the destination node, and wherein the MP2P tree is determined based on the guaranteed bandwidth;
assigning a globally unique Segment Identifier (SID) which is a single SID representing the MP2P tree; and
causing programming of forwarding entries using the globally unique SID in one or more of the plurality of source nodes, any intermediate nodes, and the destination node, based on the MP2P tree.