Cisco ONS 15454 - 2.7.72 DATA-CRC; Clear the DATA-CRC Alarm; 2.7.73 DATAFLT; Clear the DATAFLT Alarm

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.72 DATA-CRC
2.7.72 DATA-CRC
Default Severity: Major (MJ), Service-Affecting (SA)
SONET Logical Objects: CE100T, ML100T, ML1000, MLFX
The data cyclic redundancy check (CRC) Bad Packet Count Exceeds Threshold alarm indicates that
Cisco proprietary ring-wrapping (RPR) has been triggered for an ML-Series card in high-level data link
(HDLC) mode, but no SONET or data-level alarm is raised along with the “RPRW” alarm on page 2-215
to indicate the failure.
In a typical scenario that triggers Cisco proprietary RPR protection, the errored node raises RPRW, and
SONET or data errors such as the “TPTFAIL (ML100T, ML1000, MLFX)” alarm on page 2-249. If,
however, a packet-over-SONET (POS) port is placed in down administrative state, the card will raise an
RPRW without raising any SONET B3 bit alarms or data alarms. The DATA-CRC alarm accompanies
this instance of RPRW to indicate the signal interruption.
Clear the DATA-CRC Alarm
Step 1 Determine whether the “RPRW” alarm on page 2-215, is raised on the ring. If so, clear it using the
appropriate trouble-clearing procedure in this chapter.
Step 2 If the DATA-CRC alarm does not clear, check whether the alarmed card POS port is in the Down
administrative state:
a. Double-click the ML-Series card to display the card view.
b. Click the Provisioning > POS Ports tabs.
c. View the port’s setting in the Admin State column. If it is Down, verify that both POS ports are
properly configured. Refer to the Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card
Software Feature and Configuration Guide for configuration information.
Step 3 If 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 in order to report a Service-Affecting (SA)
problem.
2.7.73 DATAFLT
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: NE
The Software Data Integrity Fault alarm occurs when the TCC2/TCC2P exceeds its flash memory
capacity.
Caution When the system reboots, the last configuration entered is not saved.
Clear the DATAFLT Alarm
Step 1 Complete the “Reset an Active TCC2/TCC2P Card and Activate the Standby Card” procedure on
page 2-270.