Ceragon FA4800 User Manual Page 230

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Define the problem as either a customer-impact type (for example, loss of element
management, or no Ethernet services over the link) or a product-related type (for example,
a link is down or an ODU does not power up).
Check and Gather Relevant Information
Examining the link’s status indications will provide both current and historical information
regarding the link’s performance and alarms.
Indications include ODU LEDs, System Alarms and System Statistics.
Use these indications to further refine the problem and help to assess possible causes, both
physical and logical, in the FibeAir 70 system.
Isolate the Fault
Further isolate and characterize the problem using all available link indications.
Ascertain if the problem is related to:
End-equipment configuration or an interconnection
A hardware fault in the links accessories (such as a cable)
Configuration settings (this can be verified using the CLI)
A hardware fault in one of the ODUs
A result of larger network propagation problem
Note that Loopback indications are especially useful when isolating the fault’s component
and network location.
Correct the Fault
Once the fault is isolated, implement the needed corrective actions until the problem
resolution can be confirmed.
Whenever possible, it is recommended that commissioning tests be repeated in order to
verify that the problem link is now operating correctly.
4Gon www.4Gon.co.uk [email protected] Tel: +44 (0)1245 808295 Fax: +44 (0)1245 808299
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