A network engineer has established a redundant IPsec VTI connection between an on-premises Cisco IOS XE router and a Cisco IOS XE router hosted in AWS. The on-premises router advertises 40 individual /24 prefixes over BGP toward the AWS-hosted router. The cloud team reports that the AWS-hosted router is receiving all 40 routes, but they want the on-premises router to advertise only a single aggregate prefix (10.10.0.0/18) while suppressing the more-specific /24 routes to reduce the BGP table size. Which configuration on the on-premises router achieves this?