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Electrical port up when configure port parameters leading connection failure between USG3030 and S65 GE optical port

Publication Date:  2012-09-17 Views:  373 Downloads:  0
Issue Description
Connection between USG3030 and S65 GE optical port failed. 
Alarm Information
Handling Process
1. Make conform that optical module and fiber are working normally.
2. Test USG3000 optical port luminous power
3. Configure flow-control negotiation on USG3000 optical port.
4. S65 interface is static full-duplex/GE, but according to the configuration information from reseller, ports of USG3000 are automatic negotiation. So keep two ports parameters consistent and both automatic negotiation or static full-duplex/GE.   
Root Cause
As USG3000 consist 4 pairs of opto-electronic mutually exclusive GE port, port parameters is changed when the electrical port works. Then the electrical cable is unplugged and the optical-fibers are plugged, making parameters configured for electrical port invalid. Recongifure the parameters after optical port is connected, the ports can negotiate successfully and both up. The problem is resolved.