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Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
78-17742-02
Chapter 1 General Troubleshooting
1.12.1 Fiber Cut Detection
Figure 1-22 Fiber Cut with ALS MODE = Auto Restart
In network view, both of the lines representing the span were formerly green and have now changed to
gray. Notice also that the status of all the OCHNC circuits on the broken span have changed from
Discovered to Partial.
In node view (single-shelf mode) or shelf view (multishelf mode), the alarm panel of the two nodes
(reconfigurable optical add/drop multiplexing [ROADM] and optical line amplification [OLA] in the
example) show the LOS (AOTS) alarm on Port 4 of the OSC-CSM (see Figure 1-23) and the LOS (OTS)
on Port 5 of the OPT-BST (see Figure 1-24).
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