Which are valid formats for a route distinguisher? seenagape 13 years ago Which are valid formats for a route distinguisher? A.10.34.231.4:21 B.10:34:231:4.21 C.14567.32 D.121.32 Explanation: Not D: option D should not be correct as it is a dot between 121 and 32 not a colon. ← Previous question Next question →