Mumbai: Benchmark indices Sensex and Nifty rebounded in early trade on Friday driven by buying in blue-chip IT stocks and a firm trend in Asian equity markets. After a flat start to the trade, the 30-share BSE benchmark gauge Sensex later bounced back and climbed 219.05 points to 81,171.04. The NSE Nifty went up by 111.2 points to 24,720.90. Later, both the benchmark indices extended their rally. The BSE benchmark gauge quoted 411.60 points higher at 81,363.59, and the Nifty traded 145.15