I am trying to bring up a cwdm network. I have a 4 wavelengths all are within the cwdm power budget of -29 to -7 dBm hanging off of 4 separate muxes (cwdm-mux8a). I get link no problem. However whenever I try to put any traffic over any of the wavelengths I get frame and crc errors on the receiving cisco interface. Anybody run into this or any thoughts as to what may be the cause??