A. The trigger device must have an iBGP session with all the clusters/route reflectors in the autonomous system.

B. The trigger device must redistribute the static route pointing to a null interface into the IGP process.

C. The no ip reachables command must be issued on the PE router interface under attack.

D. The attacker's destination IP address must be routed to a null interface.

E. The eBGP sessions need to set the next-hop attribute value to the trigger device loopback interface.