bank nifty view for 17 july

hi
bank nifty took support of 21000 level and bounce bank and closed above important level of 21500.
there is a hammer candle form at support .it is a bullish candle.
now my view on b n is positive and if it is start trading above 21670 we can long for target of 22000.
in sale side my view is not strong but if b n start trading below 21400 than we can see 21100 and 21000 level.
21000 very strong support and 22000 very strong resistance .