Cisco ONS 15454 DWDM Manual

1-67
Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
78-17742-02
Chapter 1 General Troubleshooting
1.12.1 Fiber Cut Detection
Figure 1-27 ONS 15454 SDH OLA Node View with Fault Condition for ALS MODE Disabled
In order to troubleshoot and eventually fix a fiber cut, follow the “Fix a Fiber Cut” procedure on
page 1-67. The basic assumption is that the MSTP system was already installed and working correctly
before the alarm condition occurred. For first installation or restart from a fiber cut, refer to
1.12.2 System Restart after a Fiber Cut, page 1-69.
Fix a Fiber Cut
Caution When the network ALS setting is DISABLE, optical power is still present at the damaged fiber. Before
fixing the span, it is highly recommended that you shut down the amplifier and the OSC laser upstream
of the fiber cut.
Step 1 Isolate the span affected by the fiber cut.
a. Go to CTC network view.
b. Identify the span connection that is gray.
Step 2 Verify the alarm is valid, then perform the following steps for both DWDM nodes connected to the span
identified in Step 1.
a. Double-click the card directly connected to the span (either the OPT-BST or the OSC-CSM).

Cisco ONS 15454 DWDM Specifications

General

Chassis Type	DWDM
Form Factor	Rack-mountable
Slots	17
Storage Temperature	-40 to 158°F (-40 to 70°C)
Relative Humidity	5% to 95% non-condensing
Power Supply	AC or DC
Cooling	Internal fans
Operating Temperature	23 to 104°F (-5 to 40°C)
Altitude	0 to 6500 ft (0 to 1981 m)
Safety Compliance	EN 60950-1
EMI Compliance	FCC Part 15