-It is not called the 'euro' step , it is the '3d' step. It is one-two-three , not one-two-euro.
-When the rules allow 2 steps and you take 3 , it is violation. 3 is bigger than 2.
-When the rules allow 3 steps and you take 3 , it is ok.
About NBA and traveling:
http://espn.go.com/blog/truehoop/post/_/id/9963/traveling-violation-nba-on-rule-changeThe section of the NBA rulebook dealing with traveling used to allow players to "use a two-count rhythm in coming to a stop." It was reworded this season to say players "
may take two steps in coming to a stop, passing or shooting the ball."
Missing is the definition of that "two-count rhythm." From the old rule, which has governed every NBA game before this autumn:
The first count occurs: (1) As he receives the ball, if either foot is touching the floor at the time he receives it.
The second count, the rules then make clear, is a player's next step.
Therefore, the two counts would be exhausted after the running player has taken just one step. The new rule, meanwhile, allows two -- a crucial difference.
As reported in March,
the NBA has long ignored the rule while instructing referees to allow two steps, so it is believable that the way the game is called will not change. But the rule certainly has. The new video rulebook says, for instance, that "a dribbler may take two steps after gathering the ball to end a dribble."