US 11,817,996 B2
In-situ OAM trace type extension with cascade bitmap and segment in-situ OAM
Haoyu Song, San Jose, CA (US); and Tianran Zhou, Beijing (CN)
Assigned to Futurewei Technologies, Inc., Addison, TX (US)
Filed by Futurewei Technologies, Inc., Plano, TX (US)
Filed on Jun. 23, 2021, as Appl. No. 17/355,989.
Application 17/355,989 is a continuation of application No. 16/848,674, filed on Apr. 14, 2020, granted, now 11,063,817.
Application 16/848,674 is a continuation of application No. 15/975,459, filed on May 9, 2018, granted, now 10,666,506, issued on May 26, 2020.
Claims priority of provisional application 62/505,442, filed on May 12, 2017.
Claims priority of provisional application 62/505,407, filed on May 12, 2017.
Prior Publication US 2021/0320840 A1, Oct. 14, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 41/08 (2022.01); H04L 12/54 (2022.01); H04L 1/1607 (2023.01); H04L 41/00 (2022.01); H04L 12/70 (2013.01)
CPC H04L 41/08 (2013.01) [H04L 1/1614 (2013.01); H04L 12/56 (2013.01); H04L 41/26 (2013.01); H04L 2012/5625 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of tracing implemented by a node in a network, comprising:
encapsulating a packet with a header, the header including a trace type field having an indicator;
setting the indicator in the trace type field to a value to indicate that the header includes an additional trace type field; and
transmitting the packet as encapsulated to another node in the network.