Mikrotik Bandwidth issues. After 411a nic burnout.

My setup is as follows. Mikrotik RB450 (10.0.0.1) - Eth 1 = T1 Line, Eth2 = Mikrotik 411A 900mhz(10.0.0.2) Backhaul, Eth3 = DSL, Eth 4 = DSL

Need some help with a problem that I’m encountering after a 411a ethernet port burned out. Although I replaced the board, I’m no longer able to perform a successful UDP bandwidth test to external ip from my 900mhz (10.0.0.2) antenna. I get 0 bps on the download and 1.5 meg on the upload. I perform the same bandwidth test to external ip from the RB450(10.0.0.1) and I get full 1.5 X 1.5. When I perform same bandwidth test from 10.0.0.1 to 10.0.0.2, I get rough 100 meg as expected. I’m currently provide to about 15 customers in an area that is without DSL or any real high speed internet.

Any ideas or suggestions would be appreciated.
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