Nifty will be slightly gap up opening in today's session. The expected opening above the 17800 level and the 17800 to 17850 level is the consolidation range and if nifty breaks the 17850 level this level then the possible upside go up to 17950+ in today's session. in case nifty trades below the 17800 level than possible downside rally up to 100-200 points.