(Reuters) - The Russian rouble came under pressure from continuing sell-off on stock and commodity markets at opening on Monday, briefly sliding to its weakest level since the first trading day in 2011 at 30.31 versus the dollar .
By 0609 GMT, the rouble was down 1.1 percent at 30.28 versus the dollar on the MICEX exchange and was almost unchanged at 41.05 against the euro .
Versus the euro-dollar basket, the rouble eased 0.55 percent to 35.13 , closing in on the range of above 35.15 where the central bank is expected to start selling few hundred million dollars a day to limit downside pressure on the rouble. (Reporting By Andrey Ostroukh)
