US 12,088,483 B2
Telemetry data optimization for path tracing and delay measurement
Clarence Filsfils, Brussels (BE); Ahmed Mohamed Ahmed Abdelsalam, L'Aquila (IT); Rakesh Gandhi, Stittsville (CA); Pablo Camarillo Garvia, Madrid (ES); and Francois Clad, Horbourg-Wihr (FR)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Jun. 8, 2023, as Appl. No. 18/207,568.
Application 18/207,568 is a continuation of application No. 17/344,443, filed on Jun. 10, 2021, granted, now 11,716,268.
Claims priority of provisional application 63/120,002, filed on Dec. 1, 2020.
Claims priority of provisional application 63/119,992, filed on Dec. 1, 2020.
Claims priority of provisional application 63/119,938, filed on Dec. 1, 2020.
Claims priority of provisional application 63/119,964, filed on Dec. 1, 2020.
Prior Publication US 2023/0336450 A1, Oct. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 43/106 (2022.01); H04L 41/12 (2022.01); H04L 43/0805 (2022.01); H04L 43/0852 (2022.01); H04L 43/12 (2022.01); H04L 45/12 (2022.01); H04L 45/42 (2022.01); H04L 45/741 (2022.01)
CPC H04L 43/0805 (2013.01) [H04L 41/12 (2013.01); H04L 43/0852 (2013.01); H04L 43/106 (2013.01); H04L 43/12 (2013.01); H04L 45/123 (2013.01); H04L 45/42 (2013.01); H04L 45/741 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving telemetry data associated with a packet sent through a network, the telemetry data including at least:
a first timestamp that is indicative of a first time at which the packet was handled by a first node of the network, and
a portion of a second timestamp that is indicative of a second time at which the packet was handled by a second node of the network;
determining the second timestamp based at least in part on the first timestamp and the portion of the second timestamp; and
calculating, based at least in part on the first timestamp and the second timestamp, a latency associated with sending the packet through the network.