Cambium Networks cnWave 5G Fixed, Руководство по эксплуатации и устранению неисправностей

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General Troubleshooting Procedures 63
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Reversing the last previous corrective attempt before proceeding to the next.
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Performing only one corrective attempt at a time.
How to isolate the problem?
When a problem occurs, you must take primary steps to isolate the problem. Attempt to answer the
following frequently asked questions (FAQs):
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What is the history of the problem?
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Have you changed something recently?
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Have you seen any other symptoms before this?
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How widespread is the symptom?
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Is the problem only with a single CPE? (If so, focus on that CPE.)
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Is the problem with multiple CPEs? If so, think of the following:
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Is the problem with one BTS in the cluster? (If so, focus on that BTS)
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Is the problem with multiple, but not all, BTS devices in the cluster? (If so, focus on
those BTS devices)
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Is the problem with all BTS devices in the cluster? (If so, focus on the synchronization
and GPS signal.)
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What data does the event log contain?
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Does the problem correlate to external hard resets with no Watchdog timers? (If so, this
indicates a loss of power. Correct the power-related problem.)
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Is intermittent connectivity indicated? (If so, verify your configuration, power level, cables
and connections, and the symmetry of both ends of the link).
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Does the problem correlate to loss-of-sync events?
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Are connections made via shielded cables?
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Does the BTS GPS antenna have an unobstructed view of the entire horizon?
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Has the site grounding been verified?
What are the secondary steps to isolate the problem?
On completing the preliminary fault isolation steps (as described in the How to isolate the problem?
section), perform the following tasks:
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Check the knowledge base information (available on the Cambium Networks portal ) to find
whether other network operators have encountered a similar problem.
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Proceed to any appropriate set of diagnostic steps that are organized, as follows: