US 12,081,435 B2
Distribution of SRv6 modes of operation via routing protocols
Ashwath Narasimhan, Milpitas, CA (US); Muthurajah Sivabalan, Kanata (CA); Tao Wang, Ottawa (CA); and Lakshmi Rajasekaran, San Jose, CA (US)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Nov. 29, 2022, as Appl. No. 18/070,642.
Prior Publication US 2024/0179091 A1, May 30, 2024
Int. Cl. H04L 45/74 (2022.01)
CPC H04L 45/74 (2013.01) 15 Claims
OG exemplary drawing
 
1. A node in a segment routing version 6 (SRv6) network comprising circuitry configured to:
transmit and receive packets in the SRv6 network with a segment routing header (SRH) that supports one of a Reduced mode, a Non-reduced mode, and both the Reduced mode and the Non-reduced mode,
transmit via transmitted routing updates to one or more nodes in the SRv6 network which of the one of the Reduced mode, the Non-reduced mode, and both the Reduced mode and the Non-reduced mode are supported by the node, and
receive via received routing updates from the one or more nodes their corresponding support for the one of the Reduced mode, the Non-reduced mode, and both the Reduced mode and the Non-reduced mode,
wherein the transmitted and the received routing updates include flags having values set based on the one of the Reduced mode, the Non-reduced mode, and both the Reduced mode and the Non-reduced mode supported by the node and the one or more nodes such that the flags indicate what modes are supported by the respective nodes.