Preheat broiler. Place steak on a broiler pan. Broil 2-3 in. from heat until meat reaches desired doneness (for medium-rare, a thermometer should read 135°), 6-7 minutes per side. Let stand 5 minutes before slicing., In a large saucepan, bring 1/2 in. water to a boil. Add asparagus; cook, uncovered, just until crisp-tender, 3-5 minutes. Drain and cool. , Mix soy sauce, sesame oil, vinegar and ginger; toss with beef and asparagus. Sprinkle with sesame seeds. If desired, serve over lettuce with carrot, radishes, cilantro and lime wedges.