Adva FSP 3000R7 - LOL (Loss of Lane Alignment)

Standing Conditions
LOL (Loss of Lane Alignment)
The corresponding SNMP name for this condition is “lossOfLane”.
AIDTYPE Default
Severity
Probable Cause Suggested Corrective Action
CH MN The signals in one
or more lanes of the
multi-line received
signal are not
correctly aligned (in
time) relative to the
signals within the
other lanes.
1 Check the physical cabling associated with the facilities
port and ensure that the correct type of cable is used, and
that the cable is intact and that it has not been damaged or
repaired. If the cable is of the incorrect type, is damaged or
appears to have been repaired (e.g. spliced), replace the
cable with a new, undamaged/unrepaired cable of the
correct type.
2 Progressing upstream from the receiver, verify that the
optical signal paths of each lane of the channel pass
through the same multi-channel module at a given point
along the path, and that each fiber jumper cable is of the
correct type, is undamaged and unrepaired. If the lanes are
split so that different lanes traverse different fiber jumpers
at any point, ensure that each of these fiber jumpers is of
the correct type and identical length, and that each is
undamaged and unrepaired. Replace any cables found to
violate these rules, and correct any signal flow routings
which send the lanes through different multi-channel
modules at a given point along the path.
3 Verify that each optical span along the path taken by the
multi-lane channel signal conforms to the engineered
specifications for that link, especially that each link
conforms to its specified limitations for Polarization Mode
Dispersion (PMD). Correct any links that violate the span
engineering specifications.
4 Verify that each optical dispersion compensation element
along the path taken by the multi-lane channel signal
conform to the engineered requirements and correct any
which do not.
5 Replace the plug or module supporting the facility, as
appropriate.
6 Replace the far-end plug or module which is the source of
the multi-lane channel signal, as appropriate.
Table 255: LOL (Standing Condition)
FSP 3000R7 Maintenance and Troubleshooting Manual - Product Release 16.2 - Document Issue A 877