As we can see NIFTY exactly reversed from our given levels 17160 and rallied over 150++ points, now we can expect NIFTY to open around 17500 based on strong global cues which makes it open around important resistance hence we might see rejection from that level as it previously acted as a strong support and we can also see this level to be a neckline of head and shoulder pattern to which nifty broke below hence only if nifty sustains above 17500 we could see a upmove else we might see nifty getting rejected from 17500 levels