Page 1 of 1

Digital Diagnostic Monitoring alarm

Posted: 18 Dec 2013 11:24
by Yvonne
Hello,
I keep getting a DDMRx Optical Power Low Alarm and a DDMTx Output power High warning Alarm on some nodes in the network. What would be the probable cause of these alarms?

Re: Digital Diagnostic Monitoring alarm

Posted: 25 Dec 2013 11:39
by KirkwoodCR
Those alarms are indicating an error on the SFP/XFP
DDMRx Low means the SFP/XFP is receiving a light power lower than the low alarm theshold meaning an issues with the device itself, the fiber run or the SFP/XFP on the other end. Check the DDM stats tab on the node.

DDMTx Output high means the SFP/XFP is transmitting very hot. Could mean a possible SFP/XFP failure at my first guess.

Re: Digital Diagnostic Monitoring alarm

Posted: 26 Dec 2013 07:34
by Yvonne
Thank you very much.