US 11,722,410 B2
Policy plane integration across multiple domains
Balaji Sundararajan, Fremont, CA (US); Khalil A. Jabr, Lake Oswego, OR (US); Anand Oswal, Pleasanton, CA (US); Vivek Agarwal, Campbell, CA (US); and Chandramouli Balasubramanian, Mountain View, CA (US)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Nov. 29, 2022, as Appl. No. 18/59,797.
Application 18/059,797 is a continuation of application No. 17/164,553, filed on Feb. 1, 2021, granted, now 11,533,257.
Application 17/164,553 is a continuation of application No. 16/560,849, filed on Sep. 4, 2019, granted, now 10,938,717, issued on Mar. 2, 2021.
Prior Publication US 2023/0103683 A1, Apr. 6, 2023
Int. Cl. H04L 45/64 (2022.01); H04L 12/46 (2006.01); H04L 45/02 (2022.01); H04L 45/50 (2022.01); H04L 47/2441 (2022.01); H04L 9/40 (2022.01)
CPC H04L 45/64 (2013.01) [H04L 12/4641 (2013.01); H04L 45/04 (2013.01); H04L 45/50 (2013.01); H04L 47/2441 (2013.01); H04L 63/162 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of using segment routing for connecting a plurality of data centers, each data center having a plurality of overlay networks, the method comprising the steps of:
configuring a first overlay network for a first data center;
configuring a second overlay network for the first data center;
configuring a third overlay network for a second data center;
configuring a fourth overlay network for the second data center;
coupling the first overlay network and the third overlay network to a first segment-routed path between the first data center and the second data center, the first segment-routed path having first path characteristics;
coupling the second overlay network and the fourth overlay network to a second segment-routed path between the first data center and the second data center, the second segment-routed path having second path characteristics;
subsequent to the first data center receiving a first indication that routing is active between the first overlay network and the third overlay network, establishing communication between the first overlay network and the third overlay network over the first segment-routed path; and
subsequent to the first data center receiving a second indication that routing is active between the second overlay network and the fourth overlay network, establishing communication between the second overlay network and the fourth overlay network over the second segment-routed path.