Patent ID: 11916786
Assignee: CISCO TECHNOLOGY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method performed by a software defined wide area network (SD-WAN) edge router in a SD-WAN, the method comprising:
sending a register request to a network facilitator of the SD-WAN, the register request comprising a particular region identifier of the SD-WAN edge router;
receiving a list of routing controllers from the network facilitator of the SD-WAN, wherein:
the list of routing controllers identifies a plurality of routing controllers of the SD-WAN; and
each routing controller in the list of routing controllers received from the network facilitator has a region identifier that matches the particular region identifier of the SD-WAN edge router, and each routing controller stores the plurality of routes for the region that matches the particular region identifier of the SD-WAN edge router and is prevented from storing the plurality of routes for any region that does not match the particular region identifier of the SD-WAN edge router; and

establishing Overlay Management Protocol (OMP) peering connections with the plurality of routing controllers in the list of routing controllers from the network facilitator; and
avoiding establishing OMP peering connections with any other routing controller that has a different region identifier from the particular region identifier of the SD-WAN edge router.