load balancing between MIC cards

Hi all,

EX9208===ae100 (6X10GE)================ae100==Mx(BNG)

AE100 has 6X10GE physical interface members at the both ends. 3X10GE connected to the MIC0 and another 3X10GE are on the MIC4 on the Mx. If Mic 0 card is down, will my customers on the MIC 0 be impacted or no? If yes, how can be achieved the loadballance to ensure high availability/redundancy?