The BSE benchmark index Sensex todayrebounded by over 177 points in early trade today. The 30-share BSE index, which had lost almost 309 points yesterday, rallied by 177.56 points, or 1.01 per cent, to 17,230.34.The wide-based National Stock Exchange index Nifty moved up by 48.80 points, or 0.94 per cent, to 5,233.05