Cisco ONS 15454 - 2.7.233 LO-TXPOWER; Clear the LO-TXPOWER Alarm; 2.7.234 LPBKCRS

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.233 LO-TXPOWER
2.7.233 LO-TXPOWER
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Objects: EQPT, OCN
DWDM Logical Objects: 2R, ESCON, FC, GE, ISC, PPM
The Equipment Low Transmit Power alarm is an indicator for the TXP_MR_10G, TXP_MR_2.5G,
TXPP_MR_2.5G, TXP_MR_10E, MXP_2.5G_10G, MRC-12, MRC-4, and OC192-XFP card
transmitted optical signal power. LO-TXPOWER occurs when the measured optical power of the
transmitted signal falls under the threshold. The threshold value is user-provisionable.
Note For more information about provisioning MXP or TXP PPMs, refer to the “Provision Transponders and
Muxponders” 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-TXPOWER Alarm
Step 1 Display the TXP_MR_10G, TXP_MR_2.5G, TXPP_MR_2.5G, TXP_MR_10E, MXP_2.5G_10G, or
OC192-XFP card view.
Step 2 Click the Provisioning > Optics Thresholds > Current Values tabs.
Step 3 Increase the TX Power Low column value by 0.5 dBm.
Step 4 If the card transmit power setting cannot be increased without affecting the signal, complete the
“Physically Replace a Traffic Card” procedure on page 2-273.
Step 5 If no ports are shown bad and the alarm does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
2.7.234 LPBKCRS
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: STSMON, STSTRM
The Loopback Cross-Connect condition indicates that there is a software cross-connect loopback active
between the optical cards. A cross-connect loopback test occurs below line speed and does not affect
traffic.
For more information on loopbacks, see the “1.4 Troubleshooting Optical Circuit Paths With
Loopbacks” section on page 1-47.
Note Cross-connect loopbacks occur below line speed. They do not affect traffic.