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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
Caution Always use the supplied electrostatic discharge wristband when working with a powered
ONS 15310-MA SDH.
Note When you replace a card with the identical type of card, you do not need to make any changes
to the database.
Step 4 If the alarm does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447) in order to report a Service-Affecting (SA) problem.
2.7.42 DATA-CRC
Default Severity: Major (MJ), Service-Affecting (SA)
SDH Logical Objects: CE100T, ML100T
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-100T-8 or CE-100T-8 card in
high-level data link (HDLC) mode, but no SDH or data-level alarm is raised along with RPRW, page 121,
to indicate the failure.
In a typical scenario that triggers Cisco proprietary RPR protection, the errored node raises RPRW, and
SDH or data errors such as TPTFAIL, page 139. If, however, a packet-over-SDH (POS) port is placed in
down administrative state, the card will raise an RPRW without raising any SDH B3 bit alarms or data
alarms. The DATA-CRC alarm accompanies this instance of RPRW to indicate the signal interruption.
Note This alarm is used only in the Cisco ONS 15310-MA SDH platform in this release.
Clear the DATA-CRC Alarm
Step 1 Determine whether the “RPRW” alarm on page 2-121, 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-100T-8 or CE-100T-8 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 15310-CL and Cisco ONS 15310-MA 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/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447) in order to report a Service-Affecting (SA) problem.
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