lane reversal

Common xN lane connection likes this:

UP                    DP

Lane0    <----> Lane 0

Lane1    <----> Lane 1

...

LaneN-1 <----> Lane N-1

 

lane reversal to xN link likes below:

UP                    DP

Lane0    <----> Lane N-1

Lane1    <----> Lane N-2

...

LaneN-1 <----> Lane 0