A breakout of the monthly opening-range takes Ethereum towards the first major technical zone at the August highs / 100% extension of the late-November advance at 2029/42- look for a larger reaction there IF reached.
Initial support rests with the August high-day close at 1936 backed by bullish invalidation at the monthly open (1821).
A topside breach exposes slope resistance (currently ~2150s) backed by the 100% extension of the broader June advance at 2222.