Troubleshooting Switch Modules
LED-Status Potential Cause Solution for
Troubleshooting
On Lk NW NE
Red Off Red Red
blinking
Loss of signal was detected on
both network lines. Active line
is red. The protected line is red
blinking.
1 Both network lines might
be broken, measure and
check the network lines.
2 Sending and receiving
direction of the network
lines are reversed,
check the NW/T, NW/R,
NE/T and NE/R
connectors for the
correct network line.
3 A hardware error has
occurred. Replace or
return the module to
ADVA Optical
Networking for repair.
Red Orange Red Red blink-
ing
OTDR Time Interval is
activated (data transmission is
not interrupted) or both RSM-
OLM modules are locked to
different lines (data
transmission is interrupted).
1 Check the OTDR
setting.
2 Check the line mode
settings of both RSM-
OLM modules. Set both
line modes to “Auto” or
lock both RSM-OLM
modules to the same
line.
Green Orange Green Green
blinking
RSM-OLM is locked to a line.
Both lines are available, active
line is green, protected line is
blinking green.
Set the line mode to “Auto”.
Green Orange Green Red
blinking
RSM-OLM is locked to the
active line. Protected line is not
available (red blinking). No
switching possible.
Note – If the protected line is
red blinking on both RSM-OLM
modules, the protected line is
not available in both directions.
If the protected line is red
blinking on only one RSM-
OLM, the transmit direction of
this RSM-OLM is not available.
Check the protected network
line and set the line mode to
“Auto”.
Table 76: LED Status of the RSM-OLM#1630
FSP 3000R7 Maintenance and Troubleshooting Manual - Product Release 16.2 - Document Issue A 421
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