US 12,457,125 B1
Enhanced multicast tracing with latency detection
Tathagata Nandy, Bangalore (IN); and Chethan Chavadibagilu Radhakrishnabhat, Bangalore (IN)
Assigned to Hewlett Packard Enterprise Development LP, Spring, TX (US)
Filed by HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP, Spring, TX (US)
Filed on Jun. 26, 2024, as Appl. No. 18/754,543.
Claims priority of application No. 202441034178 (IN), filed on Apr. 30, 2024.
Int. Cl. H04L 12/18 (2006.01); H04L 43/0864 (2022.01); H04L 43/106 (2022.01)
CPC H04L 12/18 (2013.01) [H04L 43/0864 (2013.01); H04L 43/106 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
identifying, by a network device in a network, a join request and a data packet of a multicast group received at the network device;
determining respective timestamps indicating arrival and departure of the join request and the data packet;
determining, based on the timestamps, at least a local latency incurred by the data packet at the network device and a network latency incurred by the data packet in the network;
receiving a multicast trace (mtrace) request for the multicast group;
incorporating the local latency and the network latency into the mtrace request; and
in response to identifying an upstream network device in a multicast path associated with the multicast group, forwarding the mtrace request to the upstream network device.