US 11,916,786 B2
Distributed routing controllers for multi-region SDWAN
Samir Thoria, Saratoga, CA (US); Vivek Agarwal, Campbell, CA (US); Satish Kumar Mahadevan, San Ramon, CA (US); Laxmikantha Reddy Ponnuru, San Ramon, CA (US); Jean-Marc Barozet, Le Perreux sur Marne (FR); and Hamzah Kardame, San Francisco, CA (US)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Jan. 27, 2022, as Appl. No. 17/586,204.
Claims priority of provisional application 63/232,946, filed on Aug. 13, 2021.
Prior Publication US 2023/0052974 A1, Feb. 16, 2023
Int. Cl. H04L 45/64 (2022.01); H04L 9/40 (2022.01); H04L 45/02 (2022.01); H04L 41/0894 (2022.01)
CPC H04L 45/64 (2013.01) [H04L 41/0894 (2022.05); H04L 45/02 (2013.01); H04L 63/029 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A software defined wide area network (SD-WAN) comprising:
a first region comprising:
a plurality of first routing controllers, each first routing controller stores a plurality of first routes for the first region; and
a plurality of first SD-WAN edge routers; and
a second region comprising:
a plurality of second routing controllers, each second routing controller stores a plurality of second routes for the second region;
wherein each first routing controller of the first region is prevented from storing the plurality of second routes for the second region; and
each second routing controller of the second region is prevented from storing the plurality of first routes for the first region; and
a plurality of second SD-WAN edge routers;
wherein each first SD-WAN edge router of the first region is configured to:
establish Overlay Management Protocol (OMP) peering connections with the plurality of first routing controllers of the first region; and
avoid establishing OMP peering connections with the plurality of second routing controllers of the second region; and
wherein each second SD-WAN edge router of the second region is configured to:
establish OMP peering connections with the plurality of second routing controllers of the second region; and
avoid establishing OMP peering connections with the plurality of first routing controllers of the first region.