On 24/01/2011 07:41, Farooq Razzaque wrote:
%SFF8472-5-THRESHOLD_VIOLATION: Te0/2: Rx power low warning; Operating value: 
-12.5 dBm, Threshold value -9.9 dBm

Either your cables or transceivers are dirty. You should buy yourself a CLETOP-S for cleaning your ferrules, and a pair of insertion cleaners for cleaning sockets (transceivers, patch panels, etc). I use these ones, but there are several other manufacturers which make similar products:

http://www.fujikura.co.uk/fibre_optics/products/fibre_connectors/one-click.html

Nick
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