US 11,671,360 B2
Selecting forwarding paths and return paths in a networked environment
Jaganbabu Rajamanickam, Kanata (CA); Nagendra Kumar Nainar, Morrisville, NC (US); Darren Russell Dukes, Ottawa (CA); Carlos M. Pignataro, Cary, NC (US); and Madhan Sankaranarayanan, Tamilnadu (IN)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Nov. 4, 2020, as Appl. No. 17/89,481.
Prior Publication US 2022/0141131 A1, May 5, 2022
Int. Cl. H04L 45/00 (2022.01); H04L 43/087 (2022.01); H04L 43/12 (2022.01); H04L 45/02 (2022.01); H04L 45/74 (2022.01)
CPC H04L 45/70 (2013.01) [H04L 43/087 (2013.01); H04L 43/12 (2013.01); H04L 45/02 (2013.01); H04L 45/74 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
identifying, by a first device in a first site of a multi-site network, a first local discriminator indicating a particular route path of multiple route paths usable to send data from the first device to a second device in a second site of the multi-site network;
identifying, by the first device, a first remote discriminator indicating the particular route path from the second device to the first device;
generating, by the first device, a first probe packet including the first local discriminator and the first remote discriminator;
utilizing the first local discriminator to send, from the first device, the first probe packet through the particular route path through the multi-site network to the second device;
receiving, at the first device and from the second device, a second probe packet including a second local discriminator associated with the particular route path and a second remote discriminator associated with the particular route path;
determining, by the first device, that the first local discriminator is equal to the second remote discriminator; and
identifying, at the first device and based at least in part on receiving the second probe packet, network performance information associated with the particular route path.