project background: Huawei NG WDM Series Product Test for Vodacom in South Africa.
product: Optix OSN 8800&6800 version:V100R006C01SPC200B011
networking modes:four nodes named A,B,C,D.which establish a mesh network. and Node A:8800T32+6800,Node B:8800T16+6800, Node C:8800T32+6800, Node D:8800T16+6800
we use three NS3 and two ND2 boards on Node A, and use one NS3 board both on Node B and D, and use two NS3 and two ND2 boards on Node C. There are three trials between Node A and C: A-C, A-B-C, A-D-C. There is still one link both between A-D and A-B.
fault symptom:After creat all the OCH trial between A and C and adjust the optical power in both Nodes, all the OTU boards have no alarm except one NS3 board on Node C has OTU3-LOF alarm