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

Claim 7:
8. A method performed by a software defined wide area network (SD-WAN) network facilitator in a SD-WAN, the method comprising:
receiving a first region identifier from a plurality of first routing controllers of a first region, each first routing controller stores a plurality of first routes for the first region;
receiving a second region identifier from a plurality of second routing controllers of a second region, each second routing controller stores a plurality of second routes for the second region;
receiving a register request from a SD-WAN edge router, the register request comprising a particular region identifier of the SD-WAN edge router;
determining that the particular region identifier of the SD-WAN edge router matches the first region identifier of the plurality of first routing controllers of the first region; and
determining that the plurality of first routing controllers of the first region store the plurality of routes for the first region and do not store the plurality of routes for the second region; and
sending a list of routing controllers to the SD-WAN edge router, wherein the list of routing controllers includes the plurality of first routing controllers and excludes the plurality of second routing controllers.