Re: problem connecting Cat5505 and Cat3548 through fiber
The LED indicates the state of the physical layer. You say that the LED on the C5505 is green and the LED on the C3548 is out. This would indicate that the C5505 can see light from the C3548, but the C3548 does not see light from the C5505. Try looping each of them back on themselves (think about light levels and attenuators). The LED should turn green. If not, look for trouble at the end that fails to turn green. Also, check the fiber patch cord. One strand of glass could be bad or the end could be dirty.
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Introduction The purpose of this document is to demonstrate the Open
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