Cisco ONS 15454 Troubleshooting Manual page 348

2.7.212 LOM
The Equipment Low Laser Optical Transceiver Temperature alarm applies to the TXP and MXP cards.
LO-LASERTEMP occurs when the internally measured transceiver temperature falls below the card
setting by35.6 degrees F or 2 degrees C. A laser temperature change affects the transmitted wavelength.
(Two degrees Celsius is equivalent to about 200 picometers in the wavelength.)
When the TXP or MXP card raises this alarm, the laser is automatically shut off. The
alarm on page 2-164
at the near end. To verify the card laser temperature level, double-click the card in node view and click
the Performance > Optics PM > Current Values tabs. Maximum, minimum, and average laser
temperatures are shown in the Current column entries in the Laser Temp rows.
For more information about provisioning MXP or TXP PPMs, refer to the "Provision Transponder and
Note
Muxponder Cards" chapter of the Cisco ONS 15454 DWDM Procedure Guide. For more information
about the cards themselves, refer to the Cisco ONS 15454 DWDM Reference Manual.
Clear the LO-LASERTEMP Alarm
Complete the
Step 1
card.
Step 2 If the alarm does not clear, complete the
for the reporting MXP or TXP card.
If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
Step 3
for more information or call Cisco TAC 1 800 553-2447.
2.7.212 LOM
The Optical Transport Unit (OTU) Loss of Multiframe is a VCAT member alarm. (VCAT member
circuits are independent circuits that are concatenated from different time slots into a higher-rate signal.)
The alarm applies to MXP_2.5G_10G, TXP_MR_10G, TXP_MR_2.5G, TXP_MR_10E, or
TXPP_MR_2.5G cards when the Multi Frame Alignment Signal (MFAS) overhead field is errored for
more than five frames and persists for more than 3 milliseconds.
Note For more information about MXP or TXP cards, refer to the Cisco ONS 15454 DWDM Reference
Manual.
Clear the LOM Alarm
Step 1 Complete the
DWDM trunk, refer to the Cisco ONS 15454 DWDM Troubleshooting Guide.
Cisco ONS 15454 Troubleshooting Guide, R8.5
2-154
is raised at the far-end node and the
"Reset a Traffic Card in CTC" procedure on page 2-270
Default Severity: Critical (CR), Service-Affecting (SA) for STSMON, STSTRM, TRUNK;
Major (MJ) for VT-TERM
SONET Logical Objects: STSMON, STSTRM, VT-TERM
DWDM Logical Object: TRUNK
"Clear the SD-L Condition" procedure on page
"DUP-IPADDR" alarm on page 2-79
"Physically Replace a Traffic Card" procedure on page 2-273
2-220. To clear this alarm against the
Chapter 2 Alarm Troubleshooting
"LOS (OCN)"
is raised
for the reporting MXP or TXP
November 2009