Configure EBGP between R6 and BB3. R6 will belong to AS 100 and the BB3 router AS is 300. R6 will receive updates for networks 200.20.X.0 and 198.18.X.0, where X is any number.
Configure IBGP between R2, R3, and R6. Use AS 100. R2 should not peer directly with R6. R2 and R3 should be able to see all BGP BB3 routes in their BGP routing tables.
Configure an EBGP peering between R2 to AS 24 and R4 to AS 42. R4 should have all BB3 backbone routes within its BGP routing table. Do not change the R2 affiliation with AS 100 as accomplished in the preceding task and do not use a Confederation to accomplish this.