US 12,255,806 B2
Network device, control device and methods therein
Jiang He, Beijing (CN); Guoliang Gao, Beijing (CN); and Michael Sien-Tsieh Chen, Santa Clara, CA (US)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/420,270
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jan. 11, 2019, PCT No. PCT/CN2019/071395
§ 371(c)(1), (2) Date Jul. 1, 2021,
PCT Pub. No. WO2020/143036, PCT Pub. Date Jul. 16, 2020.
Prior Publication US 2022/0094623 A1, Mar. 24, 2022
Int. Cl. H04L 45/02 (2022.01); H04L 45/121 (2022.01); H04L 45/64 (2022.01)
CPC H04L 45/121 (2013.01) [H04L 45/02 (2013.01); H04L 45/64 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method in a network device, comprising:
receiving, from a control device, a packet to be forwarded to a neighboring network device, the packet having an embedded Link Layer Discovery Protocol Data Unit, LLDPDU;
determining a node delay associated with the network device and a link delay associated with a link between the network device and the neighboring network device, wherein the network device and the neighboring network device are on an Ethernet based network;
adding the node delay and the link delay to the embedded LLDPDU to form the LLDPDU; and
transmitting, to the neighboring network device, the LLDPDU containing the node delay and the link delay, an identifier of the network device, and a port associated with the node delay and the link delay.