EtherHaul Operation, Administration and Maintenance Manual
Page 145
RSSI Out Of Range
RSSI dropped
below configured
RSSI threshold.
RSSI drop (below
configured threshold) due
to change in RF link
conditions.
Verify if RSSI drop is due to rain
fading, mis-alignment or
interference and if threshold
was not set too close to the
nominal operation values.
1) Improve antenna alignment
and verify clear line of sight.
2) Verify RF configuration.
3) Change channel to verify no
interference.
4) Replace ODU.
Lowest Modulation
System dropped
to lowest
modulation
profile configured
(in Adaptive
Mode).
Modulation changed
(down to lowest
configured threshold) due
to change in RF link
conditions.
Verify if modulation change is
due to rain fading, mis-
alignment or interference.
1) Improve antenna alignment
and verify clear line of sight.
2) Verify RF configuration.
3) Change channel to verify no
interference.
4) Replace ODU.
15.4
Performance Statistics
The EtherHaul system uses advanced RF and Ethernet counters to provide real -time
performance statistics for radio transmission activities, Ethernet ports, and VLAN traffic.
Refer to the
Statistics
chapter of this manual for detailed description of the
performance monitoring statistics.
15.5
Loopbacks
The EtherHaul radio uses Ethernet and RF loopbacks designed to enable fault isolation
and Ethernet service performance testing.
Ethernet Line Loopback – Internal and external loopbacks are performed on
the interface, testing the local system, the radio link, and the remote
system.
RF (Radio) Loopback – Internal loopback is performed on the system’s RF
output.
Note:
After activating Loopback, it is important to
clear all RF and Ethernet statistics
in
order to receive the most accurate results for analysis.
Use system alarms as well as statistic displays to determine if Loopback testing has
passed or failed.
