Figure 10-13 Span Loss Verification; Network Optical Safety - Cisco ONS 15454 DWDM Reference Manual

10.7 Network Optical Safety

Figure 10-13
10.7 Network Optical Safety
If a fiber break occurs on the network, automatic laser shutdown (ALS) automatically shuts down the
OSCM and OSC-CSM OSC laser output power and the optical amplifiers contained in the OPT-BST,
OPT-BST-E, OPT-BST-L, OPT-AMP-L, OPT-AMP-C, and OPT-AMP-17-C cards. The Maintenance >
ALS tabs in CTC card view provide the following ALS management options for OSCM, OSC-CSM,
OPT-BST, OPT-BST-E, OPT-BST-L, OPT-AMP-L, OPT-AMP-C, and OPT-AMP-17-C cards:
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Span Loss Verification
Disable—ALS is off. The OSC laser transmitter and optical amplifiers are not automatically shut
down when a traffic outage loss of signal (LOS) occurs.
Auto Restart—ALS is on. The OSC laser transmitter and optical amplifiers automatically shut down
when traffic outages (LOS) occur. It automatically restarts when the conditions that caused the
outage are resolved. Auto Restart is the default ALS provisioning for OSCM, OSC-CSM, OPT-BST,
OPT-BST-E, OPT-BST-L, OPT-AMP-L, OPT-AMP-C, and OPT-AMP-17-C cards.
Chapter 10 Network Reference
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