Monthly chart shows a potential 4th wave going on from the lows of 2009.
Bullish view : 4th completed as a simple A-B-C and now starting the 5th wave.
Bearish view : C of 4th completed and the expanded triangle continues between the boundaries to complete remaining 2 legs as 4.D and 4.E and then 5th starts.
Strategy : Buy at CMP and add more on breakout above 2650.
Strategy : Buy at CMP. Partial exit at 2600 to 2650. Re-enter at 1900 approx levels.