Parameters: ProjectName: Type: String Description: Project name to link stacks Default: am-multi-account PeerCIDR: Type: String Default: 10.192.0.0/16 Resources: PeerRoute1: Type: AWS::EC2::Route Properties: RouteTableId: Fn::ImportValue: !Sub '${ProjectName}:PrivateRouteTable1' DestinationCidrBlock: !Ref PeerCIDR VpcPeeringConnectionId: Fn::ImportValue: !Sub '${ProjectName}:VPCPeeringConnectionId' PeerRoute2: Type: AWS::EC2::Route Properties: RouteTableId: Fn::ImportValue: !Sub '${ProjectName}:PrivateRouteTable2' DestinationCidrBlock: !Ref PeerCIDR VpcPeeringConnectionId: Fn::ImportValue: !Sub '${ProjectName}:VPCPeeringConnectionId'