Trouble with a router>ap>client

Hello,

i’m a happy owner of RB2011UiAS-2HnD-IN. Realy great thing. But i have a question that Google can’t answer me. I really tried a
lot of time to find. Maybe u’ll tell me then.. I use RB2011UiAS-2HnD-IN asa router, and have another device for a repeater. They are working together well, but repeater also connected to a computer with a wire. And there is a problem - i can ping repeater, but i can’t ping a computer that connected to a repeater by a wire. If i ping from an repeater directly - repeater see it of course. But from RB2011UiAS-2HnD-IN i can’t see it. Before it worked with another router well. Maybe u can tell me where i can fix it.
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