Aviat Networks ECLIPSE EDGE, Руководство пользователя

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260-668080-001 Rev 002 March 2013 17
Eclipse Edge User Manual
• Many hardware alarms are only initiated as a loss-of-communications alarm
during a reboot, software upgrade, or reconfiguration. By not being able to
communicate with the IDU, their settings cannot be loaded. The fault may be at
the hardware device, such as the ODU (most likely), communications to it, or the
IDU.
• IDU before an ODU . If there is doubt about whether a fault is in an IDU, or ODU,
always replace the IDU first; it is quicker and easier.
• Additional restoration times . While traffic should return to normal within two
minutes for a rebooted terminal, where dynamic NMS routing is configured, allow
not less than 5 minutes for the Eclipse router address-table auto-update to complete.
Troubleshooting Edge Path Problems
A path-related problem, with the exception of interference, is characterized by traffic
being similarly affected in both directions. Generally, if you are experiencing only a
one-way problem, it is not a path problem.
NOTE:
A path extends from ODU antenna port, to ODU antenna port.
• Normally a path problem is signalled by a reduced RSL, and depending on its
severity, a high BER.
• Only in worst case situations, such as an antenna knocked out of alignment, will a
path fail completely, and stay that way.
• For weather-related problems, such as rain or ducting, the path problem will
disappear as the weather returns to normal.
Refer to:
•
Path Problems on a Commissioned Link on page 17
•
Path Problems on a New Link on page 18
Path Problems on a Commissioned Link
A path problem on an existing link, one that has been operating satisfactorily may be
caused by:
• Weather-related path degradation
If BER alarms are fleeting / not permanent and RSL returns to its normal,
commissioned level after the alarm is cleared, rain, diffraction, or multipath fading
is indicated. Rain fade is the likely cause of fade for links 13 GHz and higher.
Diffraction and multipath/ducting for links 11 GHz and lower. If these alarms are
persistent, there could be a problem with the link design or original installation.
• Changed antenna alignment or antenna feed problem
If RSLs do not return to commissioned levels after a period of exceptionally strong
winds, suspect antenna alignment.
Also, check the antenna for physical damage, such as may occur with ice-fall. For a
remote-mounted ODU, check its antenna feeder.
• New path obstruction
Where all other parameters check as normal, and the path has potential for it to be